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Matrix Order Influence on the Non‐Linear Optical Properties of Dispersed Chromophore‐Azopolymer Systems
Author(s) -
Alicante Raquel,
Cases Rafael,
Villacampa Belén,
Blasco Eva
Publication year - 2012
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.201100649
Subject(s) - photoisomerization , chromophore , poling , materials science , matrix (chemical analysis) , molecule , photochemistry , azobenzene , polymer chemistry , optoelectronics , chemistry , polymer , organic chemistry , composite material , isomerization , dielectric , ferroelectricity , catalysis
Azopolymers with moderate non‐linear optical (NLO) response are used as host matrices for a highly efficient molecule. The second harmonic intensity generated at room temperature by these binary systems increases noticeably by adding an irradiation step (406 nm) to the corona poling process. The free volume increase due to “trans‐cis” photoisomerization of the side‐chain azo moieties allows to align the NLO chromophores and causes, at least partially, this enhancement. In order to investigate the role of guest–host interactions on the NLO response, different matrix arrangements have been induced and different d 33 / d .