Dunethy laminonitrostilbene 발색단을 포함한 비선형광학 고분자의 광화학 반응 연구

최시혁; 송기국

Polymer(Korea), Vol.23, No.1, 158-162, January, 1999

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Dunethy laminonitrostilbene 발색단을 포함한 비선형광학 고분자의 광화학 반응 연구

Photochemical Reactions of Nonlinear Optical Polymers with a Dimethylaminonitrostilbene Chromophore

최시혁, 송기국

초록

비선혀광학 발색단인 4,4`-dimethylaminonitrostilbene의 광화학 반응 mechanism을 UV/Vix, FTIR, NMR spectroscopy 등의 분광학 방법을 이용하여 조사하였다. 선택적으로 발색단에서만 일어나는 광화학 반응에 의하여 stilbene의 aliphatic C=C 이중결합이 끊어지고 oxidation에 의하여 aldehyde group이 형성된 후 þ-nitrobenzaldehyde가 생성되었으며, 사슬에 남았는 끊어진 이중결합 부분에서는 oxidation에 의하여 생성된 라디칼들이 다른 사슬의 이중결합과 반응함으로써 가교 구조를 형성하였다.

The photochemical reaction mechanism of 4,4''-dimethylaminonitrostilbene which is a nonlinear optical chromophore was investigated using UV/Vis, FTIR, and NMR spectroscopic methods. By photo-selective reactions, p-nitrobenzaldehyde was formed through an oxidation reaction after the aliphatic C=C doble bond, radicals due to oxidation reactions reacted with other double bonds to form crosslinked chain structures.

Keywords:nonlinear optic;photochemical reaction;stilbene;spectroscopy

[References]

Tripathy S, Cavicchi E, Kumar J, Kumar R, Chemtech, Oct., 620 (1989)
Marden S, Sohn J, Stucky G, ACS Symp. Ser.(455) (1991)
Williams DJ, ACS Symp. Ser.(233) (1983)
Khanarian G, Proc. SPIE, 1227 (1990)
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Teng CC, Appl. Phys. Lett., 60, 1538 (1992)
Man H, Yoon H, Adv. Mater., 4, 159 (1992)
Ham SK, Choi SH, Lee BH, Song KG, Polym.(Korea), 21(2), 201 (1997)
Rochford KB, Zanoni R, Gong Q, Stegemann GI, Appl. Phys. Lett., 55, 1161 (1989)
Tomme E, Daele P, Baets R, Mohlmann G, J. Appl. Phys., 69, 6273 (1991)
Shi Y, Steier W, Yu L, Chen M, Dalton L, Appl. Phys. Lett., 58, 1131 (1991)
Imamura S, Yoshimura R, Izawa T, Electron. Lett., 27, 1342 (1991)

[Referenced By]

[1] Tripathy S, Cavicchi E, Kumar J, Kumar R, Chemtech, Oct., 620 (1989)

[2] Marden S, Sohn J, Stucky G, ACS Symp. Ser.(455) (1991)

[3] Williams DJ, ACS Symp. Ser.(233) (1983)

[4] Khanarian G, Proc. SPIE, 1227 (1990)

[5] Prasad P, Williams D, "Introduction to NLO Effects in Molecules & Polymers," John Wiley & Sons, NY (1991)

[6] Leslie T, Demartino R, Choe E, Khanarian G, Haas D, Yoon H, Mol. Cryst. Liq. Cryst., 153, 451 (1987)

[7] Teng CC, Appl. Phys. Lett., 60, 1538 (1992)

[8] Man H, Yoon H, Adv. Mater., 4, 159 (1992)

[9] Ham SK, Choi SH, Lee BH, Song KG, Polym.(Korea), 21(2), 201 (1997)

[10] Rochford KB, Zanoni R, Gong Q, Stegemann GI, Appl. Phys. Lett., 55, 1161 (1989)

[11] Tomme E, Daele P, Baets R, Mohlmann G, J. Appl. Phys., 69, 6273 (1991)

[12] Shi Y, Steier W, Yu L, Chen M, Dalton L, Appl. Phys. Lett., 58, 1131 (1991)

[13] Imamura S, Yoshimura R, Izawa T, Electron. Lett., 27, 1342 (1991)