Synthesis and properties of photoconductive and photorefractive organic polymeric materials = 광전도성 및 광굴절성 유기고분자재료의 합성과 그 성질에 관한 연구

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Xerographic photoconductivity of 3,5-dinitrobenzoates of poly[1-(pmethoxyphenyl)penta-1,3-diyn-5-ol], poly [1 -(2-methoxyphenyl)penta- 1,3- di yn -5 - ol] and poly[1-(p N,N-dimethylaminophenyl)penta-1,3-diyn-5-ol] [DN-1,2-PMDO, DN-1,4-PMDO and DN-1,4-PDDO] is dependent on the electron donating side chains. From the transient photoconductivity signal on a sub-nanosecond time scale, a plausible mechanism for the charge carrier generation and charge transporting properties of these polymers is proposed. Condensation of photoconducting dialdehydes and nonlinear optical diamine derivatives gave new polyazomethines, Cbzl-Azo, Tpa-Azo and Dpa-Azo which have a good solubility in organic solvents. The polymer having carbazole, arylamine moieties and azo type nonlinear optical chromophore in the polymer backbone showed high photoconductivity and nonlinear optical property. The photorefractive composites fabricated by blending NLO chromophores such as {4-[2-(4-nitrophenyl)-vinyl]-phenyl}-diphenylamine (NVPDA), 3-(4-{bis-[4-(2-ethylhexyloxy)-phenyl]-amino}-phenyl)-2-isocyano-acrylonitrile (PAIA) and bis-[4-(2-ethyl-hexyloxy)-phenyl]-{4-[2-(4-nitrophenyl)-vinyl]-phenyl}-amine (PNPA) with photoconducting crosslinkable matrix, bis-(4-ethynylphenyl)-(4-octyloxyphenyl)-amine (BEOPEA), showed high photorefractive property and many problems faced in typical organic photorefractive systems such as time-consuming chemical synthesis, difficulty in rational design, intrinsic instability and phase separation could be avoided.
Advisors
Shim, Sang-Chul심상철
Description
한국과학기술원 : 화학과,
Publisher
한국과학기술원
Issue Date
2002
Identifier
174676/325007 / 000995186
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 화학과, 2002.2, [ ix, 118 p. ]

Keywords

NLO; polymer; photorefractive; photoconductivity; crosslinking; 가교; 비선형광학; 고분자; 광굴절성; 광전도성

URI
http://hdl.handle.net/10203/31585
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=174676&flag=dissertation
Appears in Collection
CH-Theses_Ph.D.(박사논문)
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