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Magnetic Materials

GMR Harddisk, courtesy IBM GermanyMagnetic phenomena are omnipresent in the modern world. The Nobel prize in Physics (2007) was awarded for studies of giant magnetoresistance to A. Fert and P. Grünberg; their discoveries were soon implemented in hard drives (see picture, courtesy of IBM Germany). Learn more about the current research into magnetic materials, basic or applied.

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Recent Articles

Syntheses, Crystal Structure and Magnetic Properties of an Unprecedented One-Dimensional Coordination Polymer Derived from an {(NiL)2Ln} Node and a Pyrazine Spacer (H2L=N,N′-Bis(salicylidene)-1,3-propanediamine, Ln=Gd, Tb and Dy)

Syntheses, Crystal Structure and Magnetic Properties of an Unprecedented One‐Dimensional Coordination Polymer Derived from an {(NiL)2Ln} Node and a Pyrazine Spacer (H2L=N,N′‐Bis(salicylidene)‐1,3‐propanediamine, Ln=Gd, Tb and Dy)

Rationally designed connectivity between bimetallic trinuclear nodes has been made from transoid-[(NiIIL)2LnIII]3+ tecton (Ln=Gd, Tb, Dy) and pyrazine spacer which form tailored 1D-zigzag coordination polymer. The Gd−Ni ferromagnetic coupling is confirmed. The Ni2Dy compound shows characteristic of SMMs or polymeric aggregates of SMMs under an applied dc field.

[Full Paper]
Soumavo Ghosh, Prithwish Mahapatra, Takuya Kanetomo, Michael G. B. Drew, Takayuki Ishida, Ashutosh Ghosh
ChemistrySelect, July 22, 2016, DOI: 10.1002/slct.201600637. Read article

Use of Nuclear Spin Noise Spectroscopy to Monitor Slow Magnetization Buildup at Millikelvin Temperatures

Use of Nuclear Spin Noise Spectroscopy to Monitor Slow Magnetization Buildup at Millikelvin Temperatures

Noisy recovery: At ultralow temperatures, longitudinal nuclear magnetic relaxation times become exceedingly long and spectral lines are very broad. Nuclear spin noise spectroscopy is used to monitor proton spin polarization recovery to thermal equilibrium of a mixture of glycerol, water, and copper oxide nanoparticles. Relaxation times determined in this way are essentially free from perturbations (see figure).

[Article]
Maria Theresia Pöschko, David Peat, John Owers-Bradley, Norbert Müller
ChemPhysChem, July 22, 2016, DOI: 10.1002/cphc.201600323. Read article

Magnetic Cobalt Ferrite Nanocrystals For an Energy Storage Concentration Cell

Magnetic Cobalt Ferrite Nanocrystals For an Energy Storage Concentration Cell

CoFe2O4 nanocrystals with controlled size and magnetic properties were synthesized. The energy storage performance of concentration cells is dictated by the magnetic characteristics of the cobalt ferrite nanocrystal carriers.

[Communication]
Qilin Dai, Ketan Patel, Greg Donatelli, Shenqiang Ren
Angew. Chem. Int. Ed., July 21, 2016, DOI: 10.1002/anie.201604790. Read article

Localized Excitation of Neural Activity via Rapid Magnetothermal Drug Release

Localized Excitation of Neural Activity via Rapid Magnetothermal Drug Release

Localized heating of magnetic nanoparticles by an alternating magnetic field can trigger the release of a chemical payload from their surfaces by breaking a thermally labile bond within ≈12 s, offering a tool for noninvasive chemical neuromodulation. As a demonstration, neurons expressing a cation channel TRPV1 (transient receptor potential vanilloid cation channel subfamily member 1) are actuated by the local release of allyl isothyocyanate, a TRPV1 agonist.

[Full Paper]
Gabriela Romero, Michael G. Christiansen, Ligia Stocche Barbosa, Francisco Garcia, Polina Anikeeva
Adv. Funct. Mater., July 20, 2016, DOI: 10.1002/adfm.201602189. Read article

Magnetic Suspension Array Technology: Controlled Synthesis and Screening in Microfluidic Networks

Magnetic Suspension Array Technology: Controlled Synthesis and Screening in Microfluidic Networks

A logic-controlled magnetic flow cytometric system is demonstrated for controlled synthesis of magnetic encoded microcarriers in multiphase flow networks. The system provides a first solution for the quality administration and screening of magnetic suspension arrays and addresses the universal need of process control in microfluidic networks.

[Full Paper]
Gungun Lin, Dmitriy D. Karnaushenko, Gilbert Santiago Cañón Bermúdez, Oliver G. Schmidt, Denys Makarov
Small, July 18, 2016, DOI: 10.1002/smll.201601166. Read article

Magnetic Mesoporous Nanocarriers for Drug Delivery with Improved Therapeutic Efficacy

Magnetic Mesoporous Nanocarriers for Drug Delivery with Improved Therapeutic Efficacy

A new versatile and simple procedure to grow magnetic mesoporous nanorods is proposed, that produces magnetic drug nanocarriers with excellent drug-loading and improved therapeutic efficacy. The nanostructures exhibit low toxicity but, when loaded with a carcinogenic drug, induce cell death as a combination of both mechanically and drug-induced death, making them excellent candidates for drug delivery.

[Full Paper]
Albert Serrà, Núria Gimeno, Elvira Gómez, Margarita Mora, Maria Lluïsa Sagristá, Elisa Vallés
Adv. Funct. Mater., July 18, 2016, DOI: 10.1002/adfm.201601473. Read article

Sharp Toroidal Resonances in Planar Terahertz Metasurfaces

Sharp Toroidal Resonances in Planar Terahertz Metasurfaces

A toroidal dipole in metasurfaces provides an alternate approach for the excitation of high-Q resonances. In contrast to conventional multipoles, toroidal dipole interaction strength depends on the time derivative of the surrounding electric field. A characteristic feature of a toroidal dipole is tightly confined loops of oscillating magnetic field that curl around the fictitious arrow of a toroidal dipole vector.

[Communication]
Manoj Gupta, Vassili Savinov, Ningning Xu, Longqing Cong, Govind Dayal, Shuang Wang, Weili Zhang, Nikolay I. Zheludev, Ranjan Singh
Adv. Mater., July 15, 2016, DOI: 10.1002/adma.201601611. Read article

Highly Flexible and Resilient Elastin Hybrid Cryogels with Shape Memory, Injectability, Conductivity, and Magnetic Responsive Properties

Highly Flexible and Resilient Elastin Hybrid Cryogels with Shape Memory, Injectability, Conductivity, and Magnetic Responsive Properties

A strategy utilizing elastin peptide macroporous cryogels to build highly flexible scaffolds to load carbon nanotubes, polypyrrole, and iron oxide magnetic nanoparticles, is presented. This combines high elasticity, flexibility, shape memory property, and injectable property together with conductivity and/or magnetic responsive property. The network can afford 97.5% compressive strain with an excellent conductivity of 50.1 ± 2.9 S cm−1 at 90% strain.

[Communication]
Yuqing Liu, Kaige Xu, Qiang Chang, Mohammad Ali Darabi, Bojie Lin, Wen Zhong, Malcolm Xing
Adv. Mater., July 15, 2016, DOI: 10.1002/adma.201601066. Read article

Impact of Fluorine Substituents on π-Conjugated Polymer Main-Chain Conformations, Packing, and Electronic Couplings

Impact of Fluorine Substituents on π‐Conjugated Polymer Main‐Chain Conformations, Packing, and Electronic Couplings

Taking the π-conjugated polymers PBDT[2X]T (X = H, F) as model systems, the effects of fluorine substitution on main-chain conformations, packing, and electronic couplings are examined. Our combination of molecular dynamics simulations and solid-state NMR shows that a higher propensity for backbone planarity in PBDT[2F]T leads to more pronounced, yet staggered, chain stacking, which generally leads to higher electronic couplings and binding energy between neighboring chains.

[Communication]
Khanh Do, Qasim Saleem, Mahesh Kumar Ravva, Federico Cruciani, Zhipeng Kan, Jannic Wolf, Michael Ryan Hansen, Pierre M. Beaujuge, Jean-Luc Brédas
Adv. Mater., July 14, 2016, DOI: 10.1002/adma.201601282. Read article

Cascade Synthesis of 2-Cyanoacrylamides through Deacetalization and/or Knoevenagel Condensation followed by Selective Monohydration of Acetals and Aldehydes over Solid Acid Ferrites

Cascade Synthesis of 2‐Cyanoacrylamides through Deacetalization and/or Knoevenagel Condensation followed by Selective Monohydration of Acetals and Aldehydes over Solid Acid Ferrites

Stepwise to cyanoacrylamides: Direct synthesis of 2-cyanoacrylamides starting from acetals and aldehydes is described. The reaction involves a cascade sequence of deacetalization and/or Knoevenagel condensation and monohydration over magnetically retrievable solid-acid catalyst with a broad substrate scope.

[Full Paper]
Sumit B. Kamble, Chandrashekhar V. Rode
ChemCatChem, July 13, 2016, DOI: 10.1002/cctc.201600426. Read article

Red Mud and Li-Ion Batteries: A Magnetic Connection

Red Mud and Li‐Ion Batteries: A Magnetic Connection

Magnetic mud: The oxide component extracted from red mud by simple magnetic separation shows an exceptional Li-ion battery performance when used as an anode material in half-cell and full-cell configuration. Additionally, long term durability is observed for 2000 cycles with the retention of 61 % capacity. This study shows a green and inexpensive approach for the construction of a highly durable anode for Li-ion power packs from earth-abundant materials.

[Full Paper]
Anil Suryawanshi, Vanchiappan Aravindan, Srinivasan Madhavi, Satishchandra Ogale
ChemSusChem, July 12, 2016, DOI: 10.1002/cssc.201600561. Read article

Mitochondria-Targeting Magnetic Composite Nanoparticles for Enhanced Phototherapy of Cancer

Mitochondria‐Targeting Magnetic Composite Nanoparticles for Enhanced Phototherapy of Cancer

Mitochondria-targeting magnetic composite nanoparticles combining photothermal therapy and photodynamic therapy are prepared. Localized heat and reactive oxygen species are simultaneously generated by the mitochondria-targeting nanoparticles under near infrared (NIR) laser irradiation. Guided by NIR fluorescence imaging and magnetic resonance imaging, photo therapy in a cancer model is conducted that reveals the outstanding therapeutic effect of the composite nanoparticles.

[Full Paper]
Ranran Guo, Haibao Peng, Ye Tian, Shun Shen, Wuli Yang
Small, July 07, 2016, DOI: 10.1002/smll.201601094. Read article

A multi-functional biomaterial with NIR long persistent phosphorescence, photo-thermal response and magnetism

There are many reports on long persistent phosphors (LPPs) applied in bio-imaging. However, there are few reports on LPPs applied in photo-thermal therapy (PTT), and an integrated system with the multi-functions of diagnosis and therapy. In this work, we fabricate effective multi-functional phosphors Zn3Ga2SnO8: Cr3+, Nd3+, Gd3+ with NIR persistent phosphorescence, photo-thermal response and magnetism. Such featured materials can act as NIR optical bio-labels and Magnetic Resonance Imaging (MRI) contrast agent for tracking the early cancer cells, but also as photo-thermal therapeutic agent for killing the cancerization cell. The new multi-functional biomaterial is expected to open a new possibility of setting up an advanced imaging-guided therapy system featuring a high resolution for bio-imaging and low side effect for the photo-thermal ablation of tumors.

[Full Paper]
Yiling Wu, Yang Li, Xixi Qin, Jianrong Qiu
Chem. Asian J., July 07, 2016, DOI: 10.1002/asia.201600569. Read article

Coordination-Cluster-Based Molecular Magnetic Refrigerants

Coordination‐Cluster‐Based Molecular Magnetic Refrigerants

Getting together: Coordination cluster compounds serving as molecular magnetic refrigerants have been attracting great interest. This review mainly focus on depicting aspects of syntheses, structures, and magnetothermal properties of recent progress in developing coordination clusters as magnetic refrigerants on account of the magnetocaloric effect (MCE), including homo- and heterometallic clusters.

[Personal Account]
Shaowei Zhang, Peng Cheng
The Chemical Record, July 06, 2016, DOI: 10.1002/tcr.201600038. Read article

Azo Polymer Janus Particles Possessing Photodeformable and Magnetic-Field-Responsive Dual Functions

Azo Polymer Janus Particles Possessing Photodeformable and Magnetic‐Field‐Responsive Dual Functions

Proper response: A new strategy with a wide range of application possibilities was developed to fabricate Janus particles (JPs) composed of a methacrylate-based azo polymer, polystyrene, and Fe3O4 nanoparticles (NPs), which show dual responses to a magnetic field and polarized light. By exploiting the dual-responsive properties, JPs with designed shapes can be fabricated by exposing the JPs to linearly polarized light.

[Communication]
Xinran Zhou, Yi Du, Xiaogong Wang
Chem. Asian J., July 06, 2016, DOI: 10.1002/asia.201600796. Read article

Integrated Charge Transfer in Organic Ferroelectrics for Flexible Multisensing Materials

Integrated Charge Transfer in Organic Ferroelectrics for Flexible Multisensing Materials

The coupling between charge-transfer crystals and a ferroelectric polymer matrix enables external stimuli-controlled polarization, optoelectronic and magnetic field-sensing properties, as well as superior strain-dependent capacitance and resistance. The realization of enhanced couplings across these energy domains opens up the potential for multisensing applications.

[Full Paper]
Beibei Xu, Shenqiang Ren
Small, July 05, 2016, DOI: 10.1002/smll.201600980. Read article

Electrochemical and Surface Analysis Studies on the Carbon Dioxide Corrosion of X-65 Carbon Steel

Electrochemical and Surface Analysis Studies on the Carbon Dioxide Corrosion of X‐65 Carbon Steel

[Full Paper]
Muhammad Tanzirul Alam, Emilyn Wai Lyn Chan, Roland De Marco, Yanliang Huang, Stuart Bailey
Electroanalysis, July 04, 2016, DOI: 10.1002/elan.201600309. Read article

Biomimetic Immuno-Magnetosomes for High-Performance Enrichment of Circulating Tumor Cells

Biomimetic Immuno‐Magnetosomes for High‐Performance Enrichment of Circulating Tumor Cells

A novel biomimetic immuno-magnetosome (IMS) is developed by coating a leukocyte membrane (decorated with anti-epithelial cell adhesion molecule antibody) on magnetic nanocluster. In addition to the good stability and magnetic controllability, the IMS also exhibits satisfactory binding avidity to circulating tumor cells while stealth property to leukocytes. As a result, rare tumor cells can be effectively enriched with undetectable leukocyte background.

[Communication]
Ke Xiong, Wei Wei, Yongjie Jin, Shumin Wang, Dongxu Zhao, Shuang Wang, Xiaoyong Gao, Chenmeng Qiao, Hua Yue, Guanghui Ma, Hai-Yan Xie
Adv. Mater., July 04, 2016, DOI: 10.1002/adma.201601643. Read article

Demonstration of polycrystalline thin film coatings on glass for spin Seebeck energy harvesting

Demonstration of polycrystalline thin film coatings on glass for spin Seebeck energy harvesting

Thermoelectric conversion of heat via the spin Seebeck effect is demonstrated in iron oxide films deposited on glass. In particular, the power generation is shown to be comparable to epitaxially grown films indicating the potential for widespread application of such materials in future spin Seebeck based energy harvesters.

[Rapid Research Letter]
Andrew J. Caruana, Michael D. Cropper, Jake Zipfel, Zhaoxia Zhou, Geoff D. West, Kelly Morrison
Phys. Status Solidi RRL, June 30, 2016, DOI: 10.1002/pssr.201600128. Read article

Simple Engineering of Polymer–Nanoparticle Hybrid Nanocapsules

Simple Engineering of Polymer–Nanoparticle Hybrid Nanocapsules

Hybridosomes: Although water and THF are known as miscible solvents, their mixtures contain droplets that template the self-assembly of nanoparticles and polymers. This strategy was successfully applied to create hollow nanocapsules (∼100 nm) with a hybrid shell made of crosslinked polymers and nanoparticles. Magnetic nanocapsules proved to be efficient as in vivo MRI contrast agents for tumor imaging.

[Communication]
Flavien Sciortino, Gérald Casterou, Pierre-Antoine Eliat, Marie-Bérengère Troadec, Cédric Gaillard, Soizic Chevance, Myrtil L Kahn, Fabienne Gauffre
ChemNanoMat, June 30, 2016, DOI: 10.1002/cnma.201600155. Read article

Genetically Engineered Organization: Protein Template, Biological Recognition Sites, and Nanoparticles

Genetically Engineered Organization: Protein Template, Biological Recognition Sites, and Nanoparticles

Proteins from microorganisms can be used as a versatile basis to form 1D multifunctional materials. A genetically engineered version of mamK, the gene responsible for magnetosome organization in magnetotactic bacteria, is used to create a fluorescent scaffold to which different nanoparticles can be attached. The materials can be actuated by magnetic fields when magnetic nanoparticles are used.

[Full Paper]
Franziska Jehle, Carmen Valverde-Tercedor, Victoria Reichel, Maria A. Carillo, Mathieu Bennet, Erika Günther, Richard Wirth, Frank Mickoleit, Raz Zarivach, Dirk Schüler, Kerstin G. Blank, Damien Faivre
Adv. Mater. Interfaces, June 28, 2016, DOI: 10.1002/admi.201600285. Read article

Synergistic Combination of Multistage Magnetic Guidance and Optimized Ligand Density in Targeting a Nanoplatform for Enhanced Cancer Therapy

Synergistic Combination of Multistage Magnetic Guidance and Optimized Ligand Density in Targeting a Nanoplatform for Enhanced Cancer Therapy

Trastuzumab-targeted, doxorubicin-encapsulated magnetic nanocarriers (T-Dox-MNCs) synthesized using thiol-functionalized poly(methacrylic acid)-grafted poly(vinyl alcohol) copolymer (PVA/PMASH) and superparamagnetic nanoparticles can generate tunable bridging sites for precise Tra conjugation and controlled pH-sensitive drug release. With precise Tra density and multiple-stage magnetic targeting, localized accumulation and intratumoral distribution of therapeutic T-Dox-MNCs are improved, increasing the efficient efficacy of the cancer therapy.

[Full Paper]
Chih-Sheng Chiang, Yi-Shang Shen, Jun-Jen Liu, Woei-Cherng Shyu, San-Yuan Chen
Adv. Healthcare Mater., June 23, 2016, DOI: 10.1002/adhm.201600479. Read article

Pulsed-Electromagnetic-Field-Assisted Reduced Graphene Oxide Substrates for Multidifferentiation of Human Mesenchymal Stem Cells

Pulsed‐Electromagnetic‐Field‐Assisted Reduced Graphene Oxide Substrates for Multidifferentiation of Human Mesenchymal Stem Cells

Reduced graphene oxide (RGO) substrates and pulsed electromagnetic fields (PEMFs) are applied to human mesenchymal stem cells (hMSCs) and their efficacy for differentiation is evaluated. Not only the RGO and PEMFs but also the induced electric current synergistically enhance the multidifferentiation of hMSCs. Consequently, this system would be a turning point in tissue engineering and regenerative medicine.

[Full Paper]
Ki-Taek Lim, Hoon Seonwoo, Kyung Soon Choi, Hexiu Jin, Kyung-Je Jang, Jangho Kim, Jin-Woo Kim, Soo Young Kim, Pill-Hoon Choung, Jong Hoon Chung
Adv. Healthcare Mater., June 22, 2016, DOI: 10.1002/adhm.201600429. Read article

Anomalous Anisotropic Magnetoresistance of Antiferromagnetic Epitaxial Bimetallic Films: Mn2Au and Mn2Au/Fe Bilayers

Anomalous Anisotropic Magnetoresistance of Antiferromagnetic Epitaxial Bimetallic Films: Mn2Au and Mn2Au/Fe Bilayers

Mn2Au, a bimetallic antiferromagnet, is considered an interesting high Néel temperature candidate within the emerging field of antiferromagnetic spintronic devices. An anomalous anisotropic magnetoresistance effect is observed with four peaks, persisting to room-temperature for a field as low as 200 mT, demonstrating how Mn2Au spins can be viewed and controlled at room-temperature and offering a route to room-temperature antiferromagnetic spintronics.

[Full Paper]
Han-Chun Wu, Mohamed Abid, Alan Kalitsov, Pavel Zarzhitsky, Mourad Abid, Zhi-Min Liao, Cormac Ó Coileáin, Hongjun Xu, Jing-Jing Wang, Huajun Liu, Oleg N. Mryasov, Ching-Ray Chang, Igor V. Shvets
Adv. Funct. Mater., June 22, 2016, DOI: 10.1002/adfm.201601348. Read article

Iron Oxide Nanoparticles Labeled with an Excited State Intramolecular Proton Transfer Dye

Excited State Intramolecular Proton Transfer (ESIPT) is a particular well known reaction that has been very little studied in magnetic environments. In this work, we report on the photophysical behavior of a known ESIPT dye of the benzothiazole class, when in solution with uncoated superparamagnetic iron oxide nanoparticles, and when grafted to silica-coated iron oxide nanoparticles. Uncoated iron oxide nanoparticles promoted the fluorescence quenching of the ESIPT dye, resulting from collisions during the lifetime of the excited state. The assembly of iron oxide nanoparticles with a shell of silica provided recovery of the ESIPT emission, due to the isolation promoted by the silica shell. The silica network gives protection against the fluorescence quenching of the dye, allowing the nanoparticles to act as a bimodal (optical and magnetic) imaging contrast agent with a large Stoke shift.

[Communication]
Elisa Magno Nunes Oliveira, Felipe Lange Coelho, Mara Lise Zanini, Ricardo Meurer Papaléo, Leandra Franciscato Campo
ChemPhysChem, June 21, 2016, DOI: 10.1002/cphc.201600472. Read article

Anion-Directed Entangling Coordination Networks: Luminescence Sensing and Magnetic Properties

Anion‐Directed Entangling Coordination Networks: Luminescence Sensing and Magnetic Properties

In a bind: Two anion-directed entangling coordination networks have been prepared, one of which shows potential for applications in chemical sensors for nitrobenzene and Fe3+ ions„ whereby strong antiferromagnetic interactions are also found between the CuII centers (see figure).

[Full Paper]
Cheng-Peng Li, Qi Chen, Yu-Hai Mu, Miao Du
ChemPlusChem, June 16, 2016, DOI: 10.1002/cplu.201600155. Read article

Graphene-Based Films with Integrated Strength and Toughness via a Novel Two-Step Method Combining Gel Casting and Surface Crosslinking

Graphene‐Based Films with Integrated Strength and Toughness via a Novel Two‐Step Method Combining Gel Casting and Surface Crosslinking

Mechanically robust graphene-based films were fabricated by a simple, environmentally friendly, and scalable two-step method combining gel casting and surface crosslinking.

[Full Paper]
Shibing Ye, Bin Chen, Dingding Hu, Changzhen Liu, Jiachun Feng
ChemNanoMat, June 15, 2016, DOI: 10.1002/cnma.201600127. Read article

Synthesis of Ferromagnetic Fe0.6Mn0.4O Nanoflowers as a New Class of Magnetic Theranostic Platform for In Vivo T1-T2 Dual-Mode Magnetic Resonance Imaging and Magnetic Hyperthermia Therapy

Synthesis of Ferromagnetic Fe0.6Mn0.4O Nanoflowers as a New Class of Magnetic Theranostic Platform for In Vivo T1‐T2 Dual‐Mode Magnetic Resonance Imaging and Magnetic Hyperthermia Therapy

Room-temperature ferromagnetic Fe0.6Mn0.4O nanoflowers synthesized by the facile one-pot high-temperature thermal decomposition method, have been successfully developed as an innovative theranostic agent with in vivo T1-T2 dual-mode magnetic resonance imaging for diagnostic applications and therapeutic interventions via magnetic hyperthermia. It provides a new optimization strategy of the composition and structure of magnetic nanoparticles for multimodality cancer diagnostics and therapy.

[Full Paper]
Xiao Li Liu, Cheng Teng Ng, Prashant Chandrasekharan, Hai Tao Yang, Ling Yun Zhao, Erwin Peng, Yun Bo Lv, Wen Xiao, Jie Fang, Jia Bao Yi, Huan Zhang, Kai-Hsiang Chuang, Boon Huat Bay, Jun Ding, Hai Ming Fan
Adv. Healthcare Mater., June 14, 2016, DOI: 10.1002/adhm.201600357. Read article

Magnetic Multivalent Trehalose Glycopolymer Nanoparticles for the Detection of Mycobacteria

Magnetic Multivalent Trehalose Glycopolymer Nanoparticles for the Detection of Mycobacteria

A multivalent trehalose-grafted poly(lactic acid) is synthesized and encapsulated with iron oxide magnetic nanoparticles. The magnetic micelles interact with Mycobacterium smegmatis to form orange clusters. Very little particle interaction is found on Staphylococcus epidermidis 35984 or Escherichia coli ORN 208. The presented new approach to the detection of mycobacteria does not require molecular biology reagents or sophisticated instruments.

[Communication]
Xuan Chen, Bin Wu, Kalana W. Jayawardana, Nanjing Hao, H. Surangi N. Jayawardena, Robert Langer, Ana Jaklenec, Mingdi Yan
Adv. Healthcare Mater., June 10, 2016, DOI: 10.1002/adhm.201600071. Read article

Temporal Modulation of Stem Cell Activity Using Magnetoactive Hydrogels

Temporal Modulation of Stem Cell Activity Using Magnetoactive Hydrogels

A magnetoactive hydrogel cell culture system is developed and characterized whose mechanical properties can be temporally and reversibly tuned through magnetic fields. Mesenchymal stem cells cultured on this system exhibit changes in morphology, proangiogenic potential, and their osteogenic differentiation potential is dependent on their mechanical history.

[Full Paper]
Amr A. Abdeen, Junmin Lee, N. Ashwin Bharadwaj, Randy H. Ewoldt, Kristopher A. Kilian
Adv. Healthcare Mater., June 08, 2016, DOI: 10.1002/adhm.201600349. Read article

Magnetocaloric Effect of Two Isostructural Heterometallic Organic Frameworks Based on {MIIGdIII2} Clusters (MII=Mn, Ni)

Magnetocaloric Effect of Two Isostructural Heterometallic Organic Frameworks Based on {MIIGdIII2} Clusters (MII=Mn, Ni)

Cool chemistry: Two isostructural 3D heterometallic coordination polymers (HCPs) based on {MIIGdIII2} clusters were synthesized (see figure) that present high thermal stability. According to magnetic results, they represent rare examples of multidimensional HCP-based magnetic refrigerants.

[Full Paper]
Shaowei Zhang, Peng Cheng
ChemPlusChem, May 20, 2016, DOI: 10.1002/cplu.201600143. Read article

Interpretation of Spectroscopic Markers of Hydrogen Bonds

Interpretation of Spectroscopic Markers of Hydrogen Bonds

NMR chemical shielding can be caused simply by proximity to a hydrogen-bond acceptor, in absence of a proton donor.

[Article]
Steve Scheiner
ChemPhysChem, May 09, 2016, DOI: 10.1002/cphc.201600326. Read article

Fluorinated POSS-Star Polymers for 19F MRI

Fluorinated POSS‐Star Polymers for 19F MRI

Novel hybrid star polymers with a polyhedral oligomeric silsesquioxane core and eight partly fluorinated copolymer arms are synthesized through R-group approach by reversible addition–fragmentation chain transfer (RAFT) polymerization. The 19F magnetic resonance imaging (MRI) capability is preliminarily confirmed by a single and strong 19F resonance in 19F nuclear magnetic resonance (NMR), and the imaging intensity is also calculated for a spin-echo pulse sequence.

[Full Paper]
Kewei Wang, Hui Peng, Kristofer J. Thurecht, Andrew K. Whittaker
Macromol. Chem. Phys., May 06, 2016, DOI: 10.1002/macp.201600084. Read article

Expansion of a Discrete [3 × 3] Mn9 Metallogrid to a µ-Carboxylato-Bridged Polymeric {Mn11}n Assembly

Expansion of a Discrete [3 × 3] Mn9 Metallogrid to a µ-Carboxylato-Bridged Polymeric {Mn11}n Assembly

Discrete and polymeric metallogrid compounds based on the [3 × 3] nonamanganese(II) square grid motif and featuring additional manganese(II) ions linked to the grid core were isolated. DC magnetic data show the successful expansion of the grid-type architectures based on tritopic bis(hydrazone) ligands appended with terminal pyruvate groups.

[Full Paper]
Avinash Lakma, Sayed Muktar Hossain, Rabindra Nath Pradhan, Dinesh Topwal, Andrea Cornia, Akhilesh Kumar Singh
Eur. J. Inorg. Chem., April 27, 2016, DOI: 10.1002/ejic.201600153. Read article.

Tuning the Magnetoluminescence Behavior of Lanthanide Complexes Having Sphenocorona and Cubic Coordination Geometries

Tuning the Magnetoluminescence Behavior of Lanthanide Complexes Having Sphenocorona and Cubic Coordination Geometries

LnIII complexes (Ln = Dy, Ho, Tb) with distinctly different coordination geometries, namely, sphenocorona and cubic, are synthesized. The different coordination geometries around the LnIII centers significantly modulate the slow magnetic relaxation and photoluminescence behaviors of the complexes, as revealed from AC magnetic susceptibility and solid-state luminescence studies, respectively.

[Full Paper]
Soumyabrata Goswami, Soumava Biswas, Kapil Tomar, Sanjit Konar
Eur. J. Inorg. Chem., April 26, 2016, DOI: 10.1002/ejic.201600152. Read article.

Synthesis, Characterization, Magnetic Properties, and Topological Aspects of Isoskeletal Heterometallic Hexanuclear CoII4LnIII2 Coordination Clusters Possessing 2,3,4M6–1 Topology

Synthesis, Characterization, Magnetic Properties, and Topological Aspects of Isoskeletal Heterometallic Hexanuclear CoII4LnIII2 Coordination Clusters Possessing 2,3,4M6–1 Topology

The use of a diprotic Schiff base ligand (H2L1) with Co(NO3)2 6H2O and LnCl3 x(H2O) afforded a family of hexanuclear coordination clusters formulated as [CoII4LnIII23-OH)2(L1)4Cl2(NO3)2(MeOH)4] 3(Et2O) where Ln is Y(1), Gd (2), Dy (3), and Tb (4). The topology of these compounds is 2,3,4M61. Compound 3 shows single molecule magnet (SMM) behavior.

[Full Paper]
Kieran Griffiths, Ghenadie Novitchi, George E. Kostakis
Eur. J. Inorg. Chem., April 21, 2016, DOI: 10.1002/ejic.201600078. Read article.

Helical CuICuII3 Metallocavitands with Sulfur-Containing Schiff Base Ligands Exhibiting Ferromagnetic or Antiferromagnetic Interactions

Helical CuICuII3 Metallocavitands with Sulfur-Containing Schiff Base Ligands Exhibiting Ferromagnetic or Antiferromagnetic Interactions

Helical CuICuII3 metallocavitands were created by the one-pot reaction of D-penicillamine, salicylaldehydes, R3N, and CuII. Each metallocavitand is composed of three CuII square planes that form a cyclic wall capped with a CuI trigonal plane, accommodating an R3NH+ ion in its cavity. The magnetic behavior of the metallocavitands was altered by changing a substituent on the ligand.

[Communication]
Asako Igashira-Kamiyama, Masayuki Saito, Shuntaro Kodera, Takumi Konno
Eur. J. Inorg. Chem., April 19, 2016, DOI: 10.1002/ejic.201600290. Read article.

Two Six-Connected MOFs with Distinct Architecture: Synthesis, Structure, Adsorption, and Magnetic Properties

Two Six‐Connected MOFs with Distinct Architecture: Synthesis, Structure, Adsorption, and Magnetic Properties

Well connected: Two unusual six-connected metal–organic frameworks were constructed by assembling CoII ions, 5-(4-pyridyl)tetrazole and formate ions. With slight modulation of the coordination environment of the trinuclear cobalt cluster, the two complexes take on completely distinct structures (see figure). One of the complexes strongly interacts with CO2 and might potentially serve as an adsorption material.

[Full Paper]
Guo-Jian Ren, Song-De Han, Yan-Qing Liu, Tong-Liang Hu, Xian-He Bu
ChemPlusChem, April 01, 2016, DOI: 10.1002/cplu.201600092. Read article

Studies of a Large Odd-Numbered Odd-Electron Metal Ring: Inelastic Neutron Scattering and Muon Spin Relaxation Spectroscopy of Cr8Mn

Studies of a Large Odd-Numbered Odd-Electron Metal Ring: Inelastic Neutron Scattering and Muon Spin Relaxation Spectroscopy of Cr8Mn

Very odd indeed! A new molecular nanomagnet, Cr8Mn, is found to exhibit spin frustration. Inelastic neutron scattering and muon spin relaxation probe the low energy spin dynamics of this compound revealing a ground state that fluctuates in spin chirality.

[Full Paper]
Michael L. Baker, Tom Lancaster, Alessandro Chiesa, Giuseppe Amoretti, Peter J. Baker, Claire Barker, Stephen J. Blundell, Stefano Carretta, David Collison, Hans U. Güdel, Tatiana Guidi, Eric J. L. McInnes, Johannes S. Möller, Hannu Mutka, Jacques Ollivier, Francis L. Pratt, Paolo Santini, Floriana Tuna, Philip L. W. Tregenna-Piggott, Iñigo J. Vitorica-Yrezabal, Grigore A. Timco, Richard E. P. Winpenny
Chem. Eur. J., January 8, 2016, DOI: 10.1002/chem.201503431. Read article.

[U(bipy)4]: A Mistaken Case of U0?

[U(bipy)4]: A Mistaken Case of U0?

U bet your bipy: Lost to time but not forgotten, the first reported and isolable “U0” complex [U(bipy)4] has been synthesized and reinvestigated (see figure). Through a thorough investigation, definitive oxidation state assignments have been made. [U(bipy)4], along with its reduced product [Na(THF)6][U(bipy)4], are revealed to be highly reduced species with U-centers in mid-to-high oxidation states.

[Communication]
Skye Fortier, José Veleta, Amélie Pialat, Jennifer Le Roy, Kamran B. Ghiassi, Marilyn M. Olmstead, Alejandro Metta-Magaña, Muralee Murugesu, Dino Villagrán
Chem. Eur. J., January 7, 2016, DOI: 10.1002/chem.201504982. Read article.

Does the Sign of the Cu–Gd Magnetic Interaction Depend on the Number of Atoms in the Bridge?

Does the Sign of the Cu–Gd Magnetic Interaction Depend on the Number of Atoms in the Bridge?

Bridge over Cu–Gd: Observation of ferromagnetic Cu–Gd exchange interactions through one- and three-atom bridges and of antiferromagnetic Cu–Gd exchange interactions through two-atoms bridges is consistent with an active spin polarization mechanism in Cu–Gd complexes (see figure).

[Full Paper]
Jean-Pierre Costes, Carine Duhayon, Sonia Mallet-Ladeira, Sergiu Shova, Laure Vendier
Chem. Eur. J., January 7, 2016, DOI: 10.1002/chem.201504238. Read article.

Spectroscopic and Computational Investigation of Low-Spin MnIII Bis(scorpionate) Complexes

Spectroscopic and Computational Investigation of Low-Spin MnIII Bis(scorpionate) Complexes

Homoleptic MnIII complexes of the scorpionate Tp and Tp* ligands are rare examples of low-spin MnIII species. The electronic structures of these species were compared using MCD spectroscopy and CASSCF/NEVPT2 computations. Complementary computations for the related [{Ph(MeIm)3B}2MnIII]+ species, which features an NHC ligand, explain variations in zero-field splitting for these complexes.

[Full Paper]
Hannah E. Colmer, Charles G. Margarit, Jeremy M. Smith, Timothy A. Jackson, Joshua Telser
Eur. J. Inorg. Chem., December 23, 2015, DOI: 10.1002/ejic.201501250. Read article.

Homoleptic Two-Coordinate Silylamido Complexes of Chromium(I), Manganese(I), and Cobalt(I)

Homoleptic Two-Coordinate Silylamido Complexes of Chromium(I), Manganese(I), and Cobalt(I)

Amido magnetism: The amido N(SiMe3)2 ligand is shown to stabilise two-coordinate metal(I) complexes for Cr and Co, in a manner similar to that previously reported for the Fe analogue (see figure). In the case of Mn, a dimer with an unsupported Mn-Mn bond was isolated. Quantum chemical calculation provided an electronic and magnetic description of the Cr–Co series.

[Full Paper]
C. Gunnar Werncke, Elizaveta Suturina, Philip C. Bunting, Laure Vendier, Jeffrey R. Long, Mihail Atanasov, Frank Neese, Sylviane Sabo-Etienne, Sébastien Bontemps
Chem. Eur. J., December 18, 2015, DOI: 10.1002/chem.201503980. Read article.

Installation of a Rigid EDTA-Like Motif into a Protein α-Helix for Paramagnetic NMR Spectroscopy with Cobalt(II) Ions

Installation of a Rigid EDTA-Like Motif into a Protein α-Helix for Paramagnetic NMR Spectroscopy with Cobalt(II) Ions

Do not bend: Coupling two copies of an iminodiacetic acid–cysteine hybrid ligand to a pair of cysteine residues positioned in an i, i+4 arrangement within a protein α-helix (see figure) leads to generation of an EDTA-like metal ion-binding motif. Rigid binding of a CoII ion by this motif produces pseudo-contact shifts suitable for paramagnetic NMR structural studies.

[Communication]
James D. Swarbrick, Phuc Ung, Matthew L. Dennis, Michael D. Lee, Sandeep Chhabra, Bim Graham
Chem. Eur. J., December 17, 2015, DOI: 10.1002/chem.201503139. Read article.

Site-Resolved Two-Step Relaxation Process in an Asymmetric Dy2 Single-Molecule Magnet

Site-Resolved Two-Step Relaxation Process in an Asymmetric Dy2 Single-Molecule Magnet

One-to-one correspondence: Employing a new hydrazone ligand resulted in the self-assembly of an asymmetric Dy2 single-molecule magnet (SMM) displaying well-separated two-step relaxation with the anisotropic centers in fine-tuned local environments where the correspondence between the metal sites and the relaxation processes was evidenced (QTM=quantum tunneling of magnetization).

[Full Paper]
Li Zhang , Julie Jung, Peng Zhang, Mei Guo, Lang Zhao, Jinkui Tang, Boris Le Guennic
Chem. Eur. J., December 16, 2015, DOI: 10.1002/chem.201503422. Read article.

Liquid Nickel Salts: Synthesis, Crystal Structure Determination and Electrochemical Synthesis of Nickel Nanoparticles

Liquid Nickel Salts: Synthesis, Crystal Structure Determination and Electrochemical Synthesis of Nickel Nanoparticles

Liquid bunch: Several new liquid nickel (II) salts were synthesized, characterized by XRD and tested for the electroreduction of nickel. Nickel nanoparticles were formed at 100 % selectivity, as was characterized by TEM and SQUID measurements. A mechanism for the electrochemical synthesis of nanoparticles is proposed.

[Full Paper]
Jeroen Sniekers, Ken Verguts, Neil R. Brooks, Stijn Schaltin, Thanh Hai Phan, Thi Mien Trung Huynh, Luc Van Meervelt, Steven De Feyter, Jin Won Seo, Jan Fransaer, Koen Binnemans
Chem. Eur. J., December 8, 2015, DOI: 10.1002/chem.201504123. Read article.

An Experimental and Theoretical Investigation on Pentacoordinated Cobalt(III) Complexes with an Intermediate S=1 Spin State: How Halide Ligands Affect their Magnetic Anisotropy

An Experimental and Theoretical Investigation on Pentacoordinated Cobalt(III) Complexes with an Intermediate S=1 Spin State: How Halide Ligands Affect their Magnetic Anisotropy

Complex magnetism: The factors that control the magnitude and symmetry of the magnetic anisotropy are investigated for a unique series of halide CoIII complexes (see figure), which possess a rare intermediate S=1 spin ground state and remarkably large axial zero-field splitting.

[Full Paper]
Deborah Brazzolotto, Marcello Gennari, Shengying Yu, Jacques Pécaut, Mathieu Rouzières, Rodolphe Clérac, Maylis Orio, Carole Duboc
Chem. Eur. J., November 26, 2015, DOI: 10.1002/chem.201502997. Read article.

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