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제108회 대한화학회 학술발표회, 총회 및 기기전시회 Recent Progress of Organic Photorefractive Materials

2011년 8월 30일 13시 49분 53초
POLY3-1 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
금 14시 : 00분
고분자화학 - Material Chemistry for Organic Molecular Electronics
저자 및
김낙중, 지석환1
한양대학교 화학과, 한양대학교 자연과학연구소, Korea
1한양대학교 화학과, Korea
Photorefractive (PR) polymers are emerging as promising photonic materials for a variety of applications, such as holographic recording, optical data storage, telecommunications, information processing. For practical application, fast response time and long term phase stability are crucial. Here we attempted to improve these factors. We synthesized PSX-Hz, (poly[4-(diphenylhydrazonomethyl)-phenyl]-[3-(methoxy-dimethyl-silanyl)-propyl]-methyl-amine), as a photoconductive matrix. Photorefractive polymer composite was prepared by mixing PSX-Hz with nonlinear optical chromophore (P-TH-DC), plastisizer (BBP), and TNF. This composite showed maximum diffraction efficiency of 77% and response time of 140 ms at 60V/μm with laser intensity of 60mW/cm2. Also we synthesized a multifunctional molecule that possesses photoconductive and electro-optic properties in one molecule as a photorefractive organic glass. Diphenylhydrazone as a photoconductive moiety was covalently bound to the enamine derivative as an electro-optic chromophore via a flexible ester link. The sample prepared from a mixture of the 99 wt % of multifunctional molecule and 1 wt % of fullerene C60 showed good photorefractive properties. The100 μm thick film showed a maximum diffraction efficiency of 69% at a low applied field of 25 V/μm,