TY  - JOUR
A1  - Bauer-Gogonea, Simona
A1  - Bauer, Siegfried
A1  - Wirges, Werner
A1  - Gerhard, Reimund
T1  - Dielectric investigation of photo-induced chromophore degradation in nonlinear optical side-chain polymer electrets
N2  - Organic materials with non-centrosymmetric chromophores are known to be susceptible to a number of photochemical processes, including reversible isomerization reactions as well as irreversible photo-oxidation or photo- reduction reactions. Reversible isomerization is the basis for a variety of applications, such as photo-induced poling, optical data storage and optical grating formation. The irreversible processes that involve the destruction of the chromophores have been found useful for the fabrication of optical waveguides, but they also limit the life times of polymeric photonic devices. In this paper, it is demonstrated that dielectric measurements allow for an in-depth investigation of non-reversible chromophore degradation processes in a typical side-chain polymer. The time- and temperature-dependent dielectric function of the polymer at 1 kHz enables us to follow the chromophore-degradation kinetics and to monitor the bleaching depth as a function of time at room and elevated temperatures
Y1  - 2004
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/15083
ER  -