Chapter 9. Diacetylene Single Crystals

  1. Deutsche Forschungsgemeinschaft (DFG)
  1. Markus Schwoerer1,
  2. Elmar Dormann2,
  3. Thomas Vogtmann1 and
  4. Andreas Feldner

Published Online: 21 DEC 2006

DOI: 10.1002/9783527609284.ch9

Macromolecular Systems: Microscopic Interactions and Macroscopic Properties: Final Report

Macromolecular Systems: Microscopic Interactions and Macroscopic Properties: Final Report

How to Cite

Schwoerer, M., Dormann, E., Vogtmann, T. and Feldner, A. (2000) Diacetylene Single Crystals, in Macromolecular Systems: Microscopic Interactions and Macroscopic Properties: Final Report (ed Deutsche Forschungsgemeinschaft (DFG)), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, Germany. doi: 10.1002/9783527609284.ch9

Author Information

  1. 1

    Experimentalphysik II, Universität Bayreuth, Universitätsstraße 30, 95447 Bayreuth, Germany

  2. 2

    Physikalisches Institut, Universität Karlsruhe, Engesserstr. 7, 67131 Karlsruhe, Germany

Publication History

  1. Published Online: 21 DEC 2006
  2. Published Print: 13 JUL 2000

ISBN Information

Print ISBN: 9783527277261

Online ISBN: 9783527609284

SEARCH

Keywords:

  • macromolecular systems;
  • diacetylene single crystals;
  • photopolymerization;
  • holography;
  • dielectricity;
  • pyroelectricity;
  • ferroelectricity;
  • non-linear optical properties

Summary

This chapter contains sections titled:

  • Introduction

  • Photopolymerization

    • Carbenes

    • Intermediate photoproducts

    • Electronic structure of dicarbenes

      • Electron spin resonance of quintet states (5DCn)

      • ENDOR of quintet states

      • ESR and ENDOR of triplet dicarbenes 3DCn

    • Flash photolysis and reaction dynamics of diradicals

  • Holography

    • Theory

    • Experimental setup

    • General characterization

    • Angular selectivity

    • Prepolymerized samples

    • Chain length, polymer profile, and grating profiles

    • Multrecording

    • Holography

  • Di-, pyro-, and ferroelectricity

    • Dielectric properties of diacetylenes

      • Correlation of polymer content and electric permittivity

      • Application to topospecifically modified diacetylenes

      • Additional applications

    • Pyroelectric diacetylenes

      • IPUDO

      • NP/4-MPU

      • DNP/MNP

      • Spurious piezo and pyroelectricity of diacetylenes

    • The ferroelectric diacetylene DNP

    • Summary

  • Non-linear optical properties

    • Aims of investigation

    • Experimental setup

    • Theoretical approaches

    • Sample preparation

    • Value and phase of the third order susceptibility χ(3)

    • Relaxation of the singlet exciton

    • The χ(3) tensor components

    • Signal saturation

    • Spectral dispersion, phase, and relaxation of χ(5)

    • Conclusion

  • References