| 双二芳基乙烯配体构建的Ag (Ⅰ)配合物及多色光致变色性质 |
| Multi-colored Photochromism of Ag(Ⅰ) Complex Constructed by Two Diarylethene Ligands |
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| 摘要: 采用闭环态紫外最大吸收波长不同的2个二芳基乙烯： 1，2-双（2'-甲基-5'-（4″-苯腈）-3'-噻吩）全氟环戊烯（L1）和顺-1，2-二氰基-1，2-双（2'，4'，5'-三甲基-3'-噻吩）乙烯（L2）为配体，以Ag （Ⅰ）为金属离子、具有强配位能力的CF3COO-为阴离子，合成了一个新的双组分光致变色Ag （Ⅰ）配合物1。通过红外光谱、核磁共振氢谱及质谱对其进行结构表征。以直接混合的双配体体系（L1+L2）为对照，用UV-Vis光谱法研究了配合物1在四氢呋喃（THF）溶液和聚甲基丙烯酸甲酯（PMMA）薄膜中的多色态光致变色性质。结果表明，银离子配位没有抑制而是调节了2个配体的光致变色性质，经254、405 nm和大于550 nm波长光的不同组合照射，可选择性地使1中2个配体发生分步光异构化反应，成功实现了黄色、蓝色、红色和紫色4个色态的转变。 |
| 关键词: 光致变色 二芳基乙烯 配合物 双组分 多色 |
| 基金项目: 教育部留学回国人员启动基金、陕西省教育厅自然科学项目（No.12JK0614）和陕西省科技厅重点研发计划（No.2018PT-27，2018GY-125，2019NY-201）资助。 |
| Abstract: A new two-component photochromic Ag (Ⅰ) complex 1 was synthesized by employing two diarylethenes bearing separated absorption wavelengths as ligands, i.e. 1,2-bis(2'-methyl-5'-(4″-cyanopheny)-3'-thienyl) perfluorocyclopentene (L1) and cis-1,2-dicyano-1,2-bis(2', 4', 5'-trimethyl-3'-thienyl) ethylene (L2), Ag(Ⅰ) as metal ions as well as strong coordinating CF3COO- as anions. The complex was characterized structurally by IR, 1H NMR and MS. The multi-colored photochromism of complex 1 was investigated in thtrahydrofuran (THF) and polymethylmethacrylate (PMMA) films by UV-Vis spectra with the mixture of two ligands as control. The results show the coordination of silver ions doesn't inhibit the photochromism but regulates the photo-isomerizations of the two ligands. The four color transformations of yellow, blue, red and purple in complex 1 were realized successfully by the selective stepwise photo-isomerization of the distinct ligands upon irradiation with combination of different wavelengths lights (254 nm, 405 nm, > 550 nm). |
| Keywords: photochromism diarylethylene complex two-component multi-color |
| 投稿时间：2021-05-12 修订日期：2021-08-24 |
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| 余中,叶娜,陈昊,郭婷,韩晶.双二芳基乙烯配体构建的Ag (Ⅰ)配合物及多色光致变色性质[J].无机化学学报,2021,37(10):1727-1737. |
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