PHOTOSTABILITY ENHANCEMENT STUDIES ON ZWITTERIONIC CHROMOPHORES FOR NONLINEAR OPTICS

被引：3
|
作者：
Raymond, S. G. [1 ]
Janssens, S. [1 ]
Do, My T. T. [1 ]
Williams, G. V. M. [1 ]
Denton, N. [1 ]
Anderson, J. [1 ]
Bhuiyan, M. D. H. [1 ]
机构：
[1] Ind Res Ltd, Lower Hutt 5040, New Zealand
来源：
ORGANIC PHOTONIC MATERIALS AND DEVICES XII | 2010年 / 7599卷
关键词：
nonlinear optical; chromophore; photostability; zwitterionic; OXYGEN; PHOTODEGRADATION; ANTIOXIDANT; MOLECULES; MOBILITY; STATE;
D O I：
10.1117/12.841269
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Optical and photostability measurements have been made on nonlinear optical films containing amorphous polycarbonate and an organic chromophore that has a high 2(nd) order nonlinear optical figure of merit. We show that the decrease in the photodegradation quantum efficiency with increasing optical intensity can be modelled in terms of oxygen depletion by oxygen-mediated chomophore photodegradation. The addition of a known singlet oxygen quencher, beta carotene, leads to a 1100% decrease in the photodegradation quantum efficiency.
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页数：7
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