二芳烯类光致变色化合物的合成及其性质(英文)  

Synthesis and Photochromism of Diarylethenes in PMMA Amorphous Film and in Solution

作　　者：朱圣生[1] 蒲守智[1] 饶毅[2] 刘刚[1] 

机构地区：[1]江西科技师范学院有机功能分子重点实验室,江西南昌330013 [2]江西中医学院研究生院,江西南昌330006

出　　处：《材料科学与工程学报》2007年第6期922-927,共6页Journal of Materials Science and Engineering

基　　金：National Natural Science Foundation of China(20564001);the Natural Science Foundation of Jiangxi,China(0620012);the Science Funds of theEducation Office of Jiangxi,China([2005]279).

摘　　要：本论文合成了三种新的二芳基乙烯类光致变色化合物1-(2,5二甲基噻吩-3-基),2-[2-甲基-5-(4-甲氧苯基噻吩)-3-基]全氟环戊烯(1a),1-(2,5二甲基噻吩-3-基),2-[2-甲基-5-(4-乙氧苯基噻吩)-3-基]全氟环戊烯(2a),1-(2,5二甲基噻吩-3-基),2-[2-甲基-5-(4-氯苯基噻吩)-3-基]全氟环戊烯(3a),并且研究了它们的光电特性。实验结果表明这些二芳烯化合物在溶液和PMMA膜片中均具有良好的光致变色性能。在313nm紫外灯的照射下,这些二芳烯化合物的溶液和PMMA膜片均由无色变为蓝色,在适当波长可见光照射下,它们均从有色态返回到无色态。在不同的溶液和PMMA膜片中,这些化合物在它们各自的激发波长的照射下均显示出较强的荧光。在313nm紫外灯的照射下,二芳烯由开环态变为闭环态,荧光强度逐渐降低。Three new photochromic diarylethenes, 1-（ 2, 5-dimethyhhien-3-yl）, 2-[ 2-methyl-5-（4-methoxyphenylthien） -3-yl ] perfluorecyclopentene （ 1 a ）, 1 - （ 2,5 - dimethylthien- 3 - yl ）, 2 - [ 2 - methyl- 5 - （ 4- ethoxyphenylthien ） - 3 - yl ] perfluorocyclopentene （ 2 a ） and 1 - （ 2, 5-dimethyhhien-3-yl）, 2- [ 2-methyl-5-（4-chlorophenylthien）-3-yl ] perfluorocyclopentene （ 3a）, were synthesized and their photochemical properties were investigated in detail. The results indicate that these diarylethenes showed good photochromic behavior both in solution and in poly（methyl methacrylate） （PMMA） amorphous film.Under irradiation with 313 nm light, the colc/dess of the hexane solution and the PMMA film turned colored and under the visible light irradiation （λ〉 510 nm） the colored hexane solution and the colored PMMA film can return to colorless. All of them exhibited good fluorescence in different solution and in PMMA film excited by their respective excitation wavelength, and their fluorescence intensity decreased along with the photochromism from open-ring form to closed-ring form under irradiation with 313 nm UV light.

关 键 词：二芳烯 光致变色 荧光 

分 类 号：TB34[一般工业技术—材料科学与工程]