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

Published online by Cambridge University Press:  10 February 2011

M. H. Lee ,
H. J. Lee ,
S. G. Han ,
H. -Y. Kim  and
Y. H. Won
M. H. Lee
Affiliation:
Photonic Switching Section, ETRI, P.O.Box 106, Yusong, Taejon, 305-600, Republic of Korea
H. J. Lee
Affiliation:
Photonic Switching Section, ETRI, P.O.Box 106, Yusong, Taejon, 305-600, Republic of Korea
S. G. Han
Affiliation:
Photonic Switching Section, ETRI, P.O.Box 106, Yusong, Taejon, 305-600, Republic of Korea
H. -Y. Kim
Affiliation:
Photonic Switching Section, ETRI, P.O.Box 106, Yusong, Taejon, 305-600, Republic of Korea
Y. H. Won
Affiliation:
Photonic Switching Section, ETRI, P.O.Box 106, Yusong, Taejon, 305-600, Republic of Korea
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Abstract

The 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.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 413: Symposium W – Electrical, Optical, and Magnetic Properties of Organic Solid State Materials III , 1995 , 287
Copyright
Copyright © Materials Research Society 1996

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References

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