Dielectric relaxation in copolymethacrylates containing side-chain nonlinear optical chromophores

Polymer ◽  
2007 ◽  
Vol 48 (2) ◽  
pp. 556-563 ◽  
Author(s):  
Natalia A. Nikonorova ◽  
Alexander V. Yakimansky ◽  
Nikolai N. Smirnov ◽  
Vladislav V. Kudryavtsev ◽  
Ricardo Diaz-Calleja ◽  
...  
Keyword(s):  
Dielectric Relaxation ◽  
Nonlinear Optical ◽  
Side Chain ◽  
Nonlinear Optical Chromophores ◽  
Optical Chromophores

Local forms of molecular mobility in copolymethacrylates containing side-chain nonlinear optical chromophores

2008 ◽  
Vol 46 (14) ◽  
pp. 1488-1496 ◽  
Author(s):  
Natalia A. Nikonorova ◽  
Nikolai N. Smirnov ◽  
Ricardo Diaz-Calleja ◽  
Alexander V. Yakimansky
Keyword(s):  
Molecular Mobility ◽  
Nonlinear Optical ◽  
Side Chain ◽  
Nonlinear Optical Chromophores ◽  
Optical Chromophores

Synthesis and Characterization of Star Polypeptide Nonlinear Optical Materials

1994 ◽  
Vol 351 ◽  
Author(s):  
Thomas M. Cooper ◽  
Weijie Su ◽  
Zbigniew Tokarski ◽  
W. Wade Adams
Keyword(s):  
Metal Ion ◽  
Nonlinear Optical ◽  
Side Chain ◽  
Tetraphenyl Porphyrin ◽  
N Terminus ◽  
Porphyrin Core ◽  
Nonlinear Optical Chromophores ◽  
Optical Chromophores ◽  
Selection Of

ABSTRACTTo develop novel polypeptide-based thin films, a series of star polypeptides modified with nonlinear optical chromophores has been synthesized. Using amino-substituted tetraphenyl porphyrin as an initiator, the N-carboxy anhydride of γ-benzyl L-glutamic acid was polymerized onto the porphyrin at a monomer to initiator ratio 20:1. The resulting four-branch star was modified with a selection of dyes. Dyes that modified both the N-terminus and benzyl side chain were used. We demonstrated feasibility of insertion of a metal ion into the polypeptide porphyrin core. The polypeptide series was characterized by UV/VIS, FTIR, and CD. The UV/VIS data suggested ease of modification of both the N-terminus and side chains. The FTLR and CD data show the resulting polypeptides were ∝-helical. The results demonstrate the feasibility of modifying the optical properties of a porphyrin by three approaches: insertion of metal, attachment of dye to N-terminus or modification of γ-benzyl L-glutamate side chain.

A Synthetic Approach for the Incorporation of Highly Efficient, Thermally Stable Second Order Nonlinear Optical Chromophores Into Side-Chain Polymers

1993 ◽  
Vol 328 ◽  
Author(s):  
Kevin J. Drost ◽  
Alex K-Y. Jen ◽  
V. Pushkara Rao ◽  
R. M. Mininni
Keyword(s):  
Nonlinear Optical ◽  
Second Order ◽  
Side Chain ◽  
Synthetic Approach ◽  
Synthetic Method ◽  
Side Chains ◽  
Thermally Stable ◽  
Highly Efficient ◽  
Nonlinear Optical Chromophores ◽  
Optical Chromophores

ABSTRACTA new synthetic method is developed to incorporate efficient nonlinear optical chromophores containing thiophene conjugating units and tricyanovinyl acceptors into side-chain polymers. This approach emphasizes the incorporation of the tricyanovinyl groups into the pendant side chains after the desired polymer is formed.

Synthesis and electro-optic activities of new side-chain polycarbonates containing nonlinear optical chromophores and isolation groups

RSC Advances ◽  
2014 ◽  
Vol 4 (9) ◽  
pp. 4395-4402 ◽  
Author(s):  
Guowei Deng ◽  
Heyan Huang ◽  
Chengcheng Peng ◽  
Airui Zhang ◽  
Maolin Zhang ◽  
...  
Keyword(s):  
Nonlinear Optical ◽  
Side Chain ◽  
Electro Optic ◽  
Nonlinear Optical Chromophores ◽  
Optical Chromophores

Evidence Of Photo-Oxidation In Photobleaching Process Of Nonlinear Optical Polymer

1995 ◽  
Vol 413 ◽  
Author(s):  
M. H. Lee ◽  
H. J. Lee ◽  
S. G. Han ◽  
H. -Y. Kim ◽  
Y. H. Won
Keyword(s):  
Nonlinear Optical ◽  
Side Chain ◽  
Conformational Transformation ◽  
Photo Degradation ◽  
Photo Oxidation ◽  
Optical Polymer ◽  
Nonlinear Optical Polymers ◽  
Nonlinear Optical Chromophores ◽  
Optical Chromophores ◽  
Nonlinear Optical Polymer

ABSTRACTThe photobleaching mechanism of nonlinear optical polymers has been investigated; the PMMA based polymers with nonlinear optical chromophores, 4-dimethylamino-4'-nitro-stilbene (DANS), 4-dimethylamino-4'-hexylsulfone-stilbene (DASS), and 4'-(2-hexyloxyethyl) ethyl amino-4-nitro azobenzene (DR-16). The photobleaching was carried out using near-UV lines. FTIR spectra and UV-VIS absorption spectra were obtained after each photobleaching. Refractive indices were measured in the photobleaching processes. The results suggest that the photobleaching mechanism of two PMMA based side-chain polymers with DANS and DASS chromophores results from the photo-oxidation and that of the PMMA based host-guest polymer with DR-16 chromophore results from the combination of the photo-degradation and the trans-cis conformational transformation.

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