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최동훈,김재홍,오광용,최석호,준웅기 한국물리학회 2004 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.45 No.2
We have developed a new multifunctional molecular glassy material, 2-(10-f6-[3-(diphenylhydrazonomethyl)- phenothiazin-10-yl]-hexylg-10H-phenothiazin-3-yl-methylene)-malononitrile, with the a unique charge transport phenomena and large photoactive property for photorefractive applications. The photorefractive sample with a mixture of 2-[10-(2-ethylhexyl)-10Hphenothiazin- 3-yl-methylene]-malononitrile(PM-1) and N'-[10-(1-(ethyl-heptyl)-10H-phenothiazin- 3-ylmethylene)-N,N-diphenyl- hydrazine(PH-1) showed a complementary grating behavior which could be explained by using the bipolar transport model. The transition from a bipolar transport phenomenon to a monopolar transport phenomenon was observed in the photorefractive composite bearing 2-(10-f6-[3-(diphenyl-hydrazonomethyl)-phenothiazin-10-yl]-hexylg-10Hphenothiazin- 3-yl-methylene)-malononitrile. We have developed a new multifunctional molecular glassy material, 2-(10-f6-[3-(diphenylhydrazonomethyl)-phenothiazin-10-yl]-hexylg-10H-phenothiazin-3-yl-methylene)-malononitrile,with the a unique charge transport phenomena and large photoactive property for photorefractiveapplications. The photorefractive sample with a mixture of 2-[10-(2-ethylhexyl)-10Hphenothiazin-3-yl-methylene]-malononitrile(PM-1) and N'-[10-(1-(ethyl-heptyl)-10H-phenothiazin-3-ylmethylene)-N,N-diphenyl- hydrazine(PH-1) showed a complementary grating behavior whichcould be explained by using the bipolar transport model. The transition from a bipolartransport phenomenon to a monopolar transport phenomenon was observed in the photorefractivecomposite bearing 2-(10-f6-[3-(diphenyl-hydrazonomethyl)-phenothiazin-10-yl]-hexylg-10Hphenothiazin-3-yl-methylene)-malononitrile.
Effect of Photopolymerization on the Rate of Photocrosslink in Chalcone-based Oligomeric Compounds
최동훈,오상준,반시영,오광용,Choe, Dong Hun,O, Sang Jun,Ban, Si Yeong,O, Gwang Yong Korean Chemical Society 2001 Bulletin of the Korean Chemical Society Vol.22 No.11
A new photochemically bifunctional epoxy and dimethacrylate compounds were synthesized for investigating the photosensitivity under UV irradiation. Photosensitivity of the synthesized chalcone-based compounds was investigated by using UV-visible absorption and Fourier transformed infrared (FT-IR) spectroscopies. The result of spectroscopic analysis substantiated that the two chalcone-based compounds have functions of both photocrosslinking and photopolymerization by UV exposure in the presence of photoinitiator. Two kinds of photochemical reactions proceeded competitively during UV exposure. Particularly, we studied the effect of photopolymerization on the rate of photocrosslink due to cycloaddition in the two oligomeric compounds.