二噻吩乙烯基四氮杂卟啉锌配合物的光致变色性质及红外无损读取性质研究

Diarylethene-based Photochromic Tetraazaporphyrizine:Photochromisim and Possibility of Nondestructive Reading in Mid-infrared

采用"一步法"合成了2,3,7,8,12,13,17,18-八-(2′,4′,5′-三甲基-3′-噻吩)四氮杂卟啉锌配合物,并通过谱学及元素分析对化合物进行了表征。电子吸收光谱及核磁信号的改变表明该化合物在365和730nm波长的光照射下发生了可逆的光致开、关环反应。通过红外吸收光谱表征了该光致变色二芳基乙烯衍生物在溶液中开、关环前后结构的变化,并采用理论化学计算方法研究了该化合物开、关环异构体的红外吸收振动特性。光致变色异构化过程可以通过红外吸收光谱的变化而识别。关环异构体在1705cm-1处出现的强吸收峰可以用于红外无损读取。

A photochromic 1,2-bisthienylethenes 2,3,7,8,12,13,17,18-octakis （2＇ ,4＇ ,5＇ -trimethyl-3＇ （BTEs） substituted tetraazaporph -thienyl）tetraazaporphyrizine zinc, yrinato （TAP） zinc complex, was synthesized by ＂one-pot＂ reaction, and was characterized by spectroscopic methods as well as the elemental analysis. The changes in the electronic absorption spectrum and IH NMR indicate that this BTE-TAP hybrid underwent reversible photocycliz- ation and cycloreversion by irradiation with 365 and 730 nm light in CHC13 solution, respectively. Comparisons between the experimental and computational IR spectra clarify the difference of the open- and closed-ring isomers, which indicate that it is possible to identify the tautomeric form of this diarylethene derivative using a highly selective infrared absorption band and the strong absorption at 1 705 cm-1 of the ring-closed isomer can be used in non-destructive readout by IR light.