TY  - JOUR
A1  - Gharagozloo-Hubmann, Kati
A1  - Kulikovska, Olga
A1  - Boerger, Volker
A1  - Menzel, Henning
A1  - Stumpe, Joachim
T1  - Surface relief gratings in azobenzene-containing polymers with linear and star-branched architectures : a comparison
N2  - The influence of molecular architecture on light-induced SRG formation was investigated. Polymers with different degree of branching were synthesized by ATRP and functionalized with azobenzene chromophores. The polymers differ only in their architecture - linear, 4-, 6-, or 12-arms stars. The photo-induced dichroism as well as the efficiency of SRG formation was similar for all polymers of this series. New consideration for the origin of the driving force was used to explain this behavior. The comparable SRG inscription rate in differently branched polymers can be rationalized by assuming that azobenzene acts as an internal molecular motor and can cause a non-turbulent motion on a scale smaller than that on which normal entanglement restriction forces act.
Y1  - 2009
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/31660
UR  - http://www3.interscience.wiley.com/journal/10003495/home
SN  - 1022-1352
ER  -