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Synthesis and photoinduced birefringence of polymethacrylates with azo-substituted pyrazoline in the side chain

Synthesis and photoinduced birefringence of polymethacrylates with azo-substituted pyrazoline in the side chain

Authors :
Jin, Ming
Yang, Qing Xin
Lu, Ran
Pan, Ling Yun
Qi, Wen Yan
Zhao, Ying Ying
Source :
Materials Chemistry & Physics. Sep2003, Vol. 82 Issue 1, p246. 7p.
Publication Year :
2003

Abstract

Two azo-containing polymers with pyrazoline group (polymers II and III) have been synthesized and their reversible optical storage properties tested in comparison with electron donor and acceptor substituted azobenzene-containing polymer I. The growth and relaxation process of birefringence signals were fit with biexponential functions. It was found that polymer II, in which azo chromophores are connected with the main chain through pyrazoline groups, has fast storage rate and good storage stability. The storage efficiency indicated that the introduction of pyrazoline groups in the polymers II and III has a positive effect. The birefringence per mole of azo chromophore showed that polymers II and III have four times the value of polymer I. The relative stability of the photoinduced birefringence decreased with the increase of temperature. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
02540584
Volume :
82
Issue :
1
Database :
Academic Search Index
Journal :
Materials Chemistry & Physics
Publication Type :
Academic Journal
Accession number :
10426566
Full Text :
https://doi.org/10.1016/S0254-0584(03)00197-4