Share Email Print
cover

Proceedings Paper

Unification of azo-polymer systems by photo-induced molecular movement
Author(s): Zouheir Sekkat; Andre Knoesen; Wolfgang Knoll; Robert D. Miller
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We review our recent research in the field of photochromic polymeric structures for optical data storage and nonlinear optics. We unify some of the sub-themes of azopolymer structures in the light of photo-induced movement of azobenzene molecules. In particular, we discuss photo-induced effects in supramolecular assemblies containing azobenzene molecules (e.g. Langmuir-Blodgett-Kuhn structures and ultrathin silane layers). Reorientation of azobenzenes in these structures will be compared to that observed in spin-cast films. Photoisomerization and photo-induced orientation of azobenzene molecules is also studied at the molecular level by means of azosilane molecules chemisorbed on Silicon Oxide substrates. We establish a correlation between polymer architecture and sub-glass transition temperature (Tg) light-induced molecular movement in high Tg nonlinear optical azo-polyimide polymers. We show that the isomerization reaction itself depends on the polymer molecular structure, and we present evidence of light-induced molecular movement 325 °C below Tg of a rigid NLO azopolyimide polymer containing no flexible connector or tether.

Paper Details

Date Published: 29 July 1997
PDF: 25 pages
Proc. SPIE 10290, Sol-Gel and Polymer Photonic Devices: A Critical Review, 102900H (29 July 1997); doi: 10.1117/12.279824
Show Author Affiliations
Zouheir Sekkat, Univ. of California/Davis and Max-Planck-Institut fuer Polymerforschung (Japan)
Andre Knoesen, Univ. of California/Davis (United States)
Wolfgang Knoll, Max-Planck-Institut fuer Polymerforschung (FRG) and RIKEN--The Institute of Physical and C (Germany)
Robert D. Miller, IBM Almaden Research Ctr. (United States)


Published in SPIE Proceedings Vol. 10290:
Sol-Gel and Polymer Photonic Devices: A Critical Review
Mark P. Andrews; S. Iraj Najafi, Editor(s)

© SPIE. Terms of Use
Back to Top