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Synthesis and photochromic reactivity of diarylethene trimers bridged by ethenyl and ethynyl unit |
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| Authors: | Hyunbong Choi Kyu Ho Song Dong-Soo Shin Jaejung Ko |
| Affiliation: | a Department of Chemistry, Korea University, Jochiwon, Chungnam 339-700, Republic of Korea b Department of Chemistry, Korea National University of Education, Chongwon, Chungbuk 363-791, Republic of Korea c Department of Chemistry, Changwon National University, Changwon, GN 641-773, Republic of Korea |
| Abstract: | Two diarylethene trimers bridged by ethenyl and ethynyl groups were synthesized and their photochromic behaviors were examined. Upon irradiation of the trimers 2 and 4 with UV light, one-three photoinduced cyclization reactions occur. Each isomer was isolated and analyzed by 1H NMR spectrum. The quantum yield of 2 and 4 is 0.52 and 0.311, respectively. |
| Keywords: | Photoswitch Macromolecule Trimer Diarylethene |
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