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Detailed description Surface Enhanced Vibrational Spectroscopy (SEVS) has reached maturity as an analytical technique, but until now there has been no single work that describes the theory and experiments of SEVS. This book combines the two important techniques of surface-enhanced Raman scattering (SERS) and surface-enhanced infrared (SEIR) into one text that serves as the definitive resource on SEVS. * Discusses both the theory and the applications of SEVS and provides an up-to-date study of the state of the art * Offers interpretations of SEVS spectra for practicing analysts * Discusses interpretation of SEVS spectra, which can often be very different to the non-enhanced spectrum - aids the practicing analyst
From the contents Preface.
1. Theory of Molecular Vibrations. The Origin of Infrared and Raman Spectra.
1.1 Electronic, Vibrational, Rotational and Translational Energy.
1.2 Separation of Nuclear and Electronic Motions.
1.3 Vibrations in Polyatomic Molecules.
1.4 Equilibrium Properties. Dipole Moment and Polarizability.
1.5 Fundamental Vibrational Transitions in the Infrared and Raman Regions.
1.6 Symmetry of Normal Modes and Vibrational States.
1.7 Selection Rules.
1.8 The Example of ab initio Computation of the Raman and Infrared Spectra.
1.9 Vibrational Intensities.
1.10 Definition of Cross-Section.
1.11 The Units of Energy and Force Constants.
2. The Interaction of Light with Nanoscopic Metal Particles and Molecules on Smooth Reflecting Surfaces.
2.1 Electric Permittivity and Refractive Index.
2.2 Propagation of Electromagnetic Waves and the Optical Properties of Materials.
2.3 Scattering and Absorption by Nanoscopic Particles.
2.4 Reflection-Absorption Infrared Spectroscopy on Smooth Metal Surfaces.
3. Surface-Enhanced Raman Scattering (SERS).
3.1 Electromagnetic Enhancement Mechanism.
4. Chemical Effects and the SERS Spectrum.
4.1 Physical and Chemical Adsorption.
4.2 SERS/SERRS of Physically Adsorbed Molecules.
4.3 SERS of Chemically Adsorbed Molecules without Electronic Resonance Excitation.
4.4 SERS of Chemically Adsorbed Molecules with Charge Transfer Excitation.
4.5 Metal-Molecule or Molecule-Metal Charge Transfer.
4.6 SERRS from a Surface Complex.
5. Is SERS Molecule Specific?
6. SERS/SERRS, the Analytical Tool.
6.1 Average SERS on Metal Colloids. Preparation and Properties.
6.2 Metal Colloids. The Background SERS.
6.3 Metal Colloids. Maximizing the Average SERS in Solution.
6.4 Average SERS on Metal Island Films.
6.5 Average SERS on Rough Electrodes.
6.6 Ultrasensitive SERS Analysis and Single Molecule Detection.
6.7 Uniqueness of Ultrasensitive Chemical Analysis. The Moving Target.