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Organic Electronics

Over the last 20 years, tremendous progress has been achieved in the design and fabrication of organic electronic devices. High performance LEDs, transistors, and memory devices—the materials science journals have it all! Follow the continuing progress and the latest breakthroughs in the field of organic electronics in our top-quality journals.

Daniele Braga, Gilles Horowitz
High-Performance Organic Field-Effect Transistors
Adv. Mater., DOI: 10.1002/adma.200802733

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Recent Articles

Microsecond Response in Organic Electrochemical Transistors: Exceeding the Ionic Speed Limit

Microsecond Response in Organic Electrochemical Transistors: Exceeding the Ionic Speed Limit

Organic electrochemical transistors (OECTs) are transistors that can have extrinsic transconductances as high as 400 S m−1, but they typically have response times on the order of 1 ms or longer. These response speeds are limited by ion transport. It is shown that OECTs can exceed the ionic response speed by a factor of 30 when operated in a high-speed bias regime.

[Communication]
Jacob T. Friedlein, Mary J. Donahue, Sean E. Shaheen, George G. Malliaras, Robert R. McLeod
Adv. Mater., July 26, 2016, DOI: 10.1002/adma.201602684. Read article

Toward High-Output Organic Vertical Field Effect Transistors: Key Design Parameters

Toward High‐Output Organic Vertical Field Effect Transistors: Key Design Parameters

The operation mechanism and performance of organic vertical field effect transistors (VFETs) have been investigated. Several key factors are identified such as source/drain electrode widths, source contact resistance, and bottom active layer thickness. With the key parameters, the proposed VFET shows greater performance than conventional organic field-effect transistors with lateral channel in terms of driving capability.

[Full Paper]
Hyukyun Kwon, Mincheol Kim, Hyunsu Cho, Hanul Moon, Jongjin Lee, Seunghyup Yoo
Adv. Funct. Mater., July 21, 2016, DOI: 10.1002/adfm.201601956. 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

Bio-Derived Polymers for Sustainable Lithium-Ion Batteries

Bio‐Derived Polymers for Sustainable Lithium‐Ion Batteries

A pendant polymer with bio-derived redox units is designed for lithium-ion battery cathodes. With a working voltage of ≈2.5 V versus Li/Li+, it can deliver a high capacity of 125 mAh g−1 at 14.4 mA g−1. Using a semi-synthetic approach for designing pendant redox-active polymers is an attractive strategy for the development of energy storage materials.

[Full Paper]
Tyler B. Schon, Andrew J. Tilley, Colin R. Bridges, Mark B. Miltenburg, Dwight S. Seferos
Adv. Funct. Mater., July 14, 2016, DOI: 10.1002/adfm.201602114. Read article

Molecular Transport Junctions Created By Self-Contacting Gapped Nanowires

Molecular Transport Junctions Created By Self‐Contacting Gapped Nanowires

Molecular transport junctions (MTJs) are important components in molecular electronic devices. However, the synthesis of MTJs remains a significant challenge, as the dimensions of the junction must be tailored for each experiment, based on the molecular lengths. A novel methodology is reported for forming MTJs, taking advantage of capillary and van der Waals forces.

[Communication]
Jong Kuk Lim, One-Sun Lee, Jae-Won Jang, Sarah Hurst Petrosko, George C. Schatz, Chad A. Mirkin
Small, July 01, 2016, DOI: 10.1002/smll.201601214. Read article

Synthesis of Alkynylated Benzo[a]naphtho[2,3-i]phenazine Derivatives

Synthesis of Alkynylated Benzo[a]naphtho[2,3-i]phenazine Derivatives

Acene from a condensation: Four different bent benzo[a]naphtho[2,3-i]phenazines are efficiently synthesized by condensation of aromatic diamines with 1,2-naphthalenedione. The resultant azaacenes are spectroscopically and crystallographically characterized. Optical properties are studied and compared with those of the isomeric linear azaacenes.

[Communication]
Sebastian Hahn, Philipp Biegger, Markus Bender, Frank Rominger, Uwe H. F. Bunz
Chem. Eur. J., December 11, 2015, DOI: 10.1002/chem.201503856. Read article.

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