Park, K. H. Song, S. Kwak, M. G. Yeon, K. M. Lee, C. J. Kim, N. 2024-01-21T17:34:09Z 2024-01-21T17:34:09Z 2022-01-11 1998-01 1058-725X https://pubs.kist.re.kr/handle/201004/143300 Second-order nonlinear optical polyimides were successfully synthesized by Mitsunobu reaction of polyhydroxyimides with hydroxylated benzoxazole chromophores. These resultant fluorinated polyimides were fairly soluble in pyridine, cyclohexanone, and therefore could be easily spin casted for electro-optic thin films. The polyimides had glass transition temperatures of 175 similar to 195 degrees C, and the electro-optic coefficients were in the range of 8.5 similar to 12.3 pm/V at 1.3 mu m and showed long-term temporal stability English GORDON BREACH PUBLISHING, TAYLOR & FRANCIS GROUP Electro-optic Fluorinated Polyimides with Benzoxazole-based Chromophores Article 10.1080/10587259808044458 1 MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.316, pp.53 - 56 MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS 316 53 56 scie scopus 000207082900013 2-s2.0-0032056894 Crystallography Crystallography Article nonlinear optical polyimides Mitsunobu reaction benzoxazole chromophores electro-optic coefficients