Unconventional Photoactive Solids

1. Front Matter

   Pages i-ix

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2. Fractals in Disordered Media

   1. Fractal Image Encoding

      • M. F. Barnsley, J. H. Elton, A. D. Sloan, H. Strickland

      Pages 1-10

   2. Transport and Reactions in Disordered Media

      • Raoul Kopelman

      Pages 11-19

   3. Fractal-Like Exciton Kinetics in Porous Glasses, Membranes and Powders

      • J. Prasad, S. Parus, R. Kopelman

      Pages 21-28

   4. Reaction Kinetics on Fractal and Euclidean Structures with Energetic Disorder: Random Walk Simulations

      • L. W. Anacker, R. Kopelman

      Pages 29-40

3. Spectral Hole-Burning

   1. Dynamical Hole-Burning Requirements for Frequency Domain Optical Storage

      • W. E. Moerner

      Pages 41-51

   2. Zero-Phonon Lines, Photoburning of Spectral Holes, Information Storage, Photon Echo, in Solid Systems

      • Karl K. Rebane

      Pages 53-56

   3. Evolution of Spectral Holes on Logarithmic Time Scales

      • J. Friedrich, D. Haarer

      Pages 57-61

4. Exciton Transport: Experiment and Theory

   1. Exciton Transport in Naphthalene-Doped Poly (Methylmethyl-Acrylate): Spatial and Energetic Disorder

      • E. Irene Newhouse, Raoul Kopelman

      Pages 63-81

   2. Excitation Transport Kinetics in Vapor-Deposited Naphthalene

      • Laurel A. Harmon, Raoul Kopelman

      Pages 83-103

   3. Response of an Insulating Material to Photoexcitation

      • David W. Brown, Bruce J. West, Katja Lindenberg

      Pages 105-113

   4. Excitron Transport in Mixed Crystals: Quantum Percolation

      • L. Root, J. L. Skinner

      Pages 115-116

5. Electron Transfer in Disordered Media

   1. On Electron Transfer Reactions in Disordered Media

      • E. Canel

      Pages 117-131

   2. Time-Resolved Dielectric Loss as a Probe of Interfacial Electron Transfer Dynamics

      • M. R. V. Sahyun

      Pages 133-143

6. Energy Transfer in Organic Solids

   1. Charge Transfer in Polypyrrole and Electrochromism of Prussian Blue

      • Ephraim Buhks

      Pages 145-152

   2. Energy Transfer in Doped Polymer Films

      • D. M. Hanson, Y. Lin, M. C. Nelson

      Pages 153-163

   3. Vibrational Dynamics of Hydrogen Bonded Solids: Phonons and Optical Damage

      • Thomas J. Kosic, Jeffrey R. Hill, Dana D. Dlott

      Pages 165-169

7. Silica Glasses

   1. An Integrated Fractal Analysis of Silica: Electronic Energy Transfer, Small-Angle X-ray-Scattering and Adsorption

      • D. Rojanski-Pines, D. Huppert, H. B. Bale, X. Dacai, P. W. Schmidt, D. Farin et al.

      Pages 171-178

   2. Structural Changes and Oscillations during the Sol-Gel Transition in Silica Gel Glass as Probed by Pyrene Excimerization

      • Vered R. Kaufman, David Avnir

      Pages 179-183

   3. Organic Molecule, 1,4-Dihydroxy-9, 10-Anthraquinone, Doped Amorphous Silica Prepared by Sol-Gel Method and its Structures Studied by Photochemical Hole Burning

      • Toshiro Tani, Akio Makishima, Akira Itani, Uichi Itoh

      Pages 185-192

The papers in this volume were presented at the Second International Conference on Unconventional Photoactive Solids held at the R&D Center of BP America September 9-12, 1985. It was part of an on-going series of conferences with the main aim of stressing the Interrelationship of solid state physics and solid state chemistry. The choice of topics covered a broad range of light-Induced solid state phenomena with particular emphasis on novel materials and/or novel phenomena. Organic solids, in particular, were emphasized as they are a natural meeting point of solid state physics and chemistry. A general trend In solid state physics Is to more complex materials (e.g. nonequilibrium glassy films, complicated unit cells, extended molecular building blocks, etc.). This trend necessitates the closer interaction between physicists and chemists. This conference reflects this trend quite dramatically. It is a new grouping together of a mix of materials, people and experimental approaches. A typical new theme pulling together this new mix can be seen in Part I. Fractals in Disordered Media. A variety of disordered media give rise to unusual temporal patterns of diffusion and reactions. The more familiar spatial patterns of self-similarity are discussed in the first article by M.F. Barnsley. Another topic pulling together a diverse group of scientists is covered in Part II. Spectral Hole-Burning. A number of leaders in this field are represented In these three papers.

• crystal
• glass
• ion transport
• polymer
• polymers
• semiconductors
• spectroscopy

• Research Center Warrensville, BP Research International, Cleveland, USA

  Harvey Scher

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