Research on photochromic materials with synthesis and properties of 1-(2-methyl-3-benzothiophene)-2-[2-methyl-5-(3-cyanophenyl)-3-thienyl]perfluorocyclopentene was written by Liao, Guanming;Zheng, Chunhong;Pu, Shouzhi. And the article was included in Applied Mechanics and Materials in 2014.Application of 10243-15-9 This article mentions the following:
An asym. photochromic diarylethene, 1-(2-Methyl-3-benzothiophene)-2-[2-methyl-5-(3-cyanophenyl)-3-thienyl]perfluorocyclopentene (I) was synthesized and its photochromic and fluorescent properties in hexane solution as well as PMMA films were investigated in detail. Exptl. results showed that compound I exhibited remarkable photochromism. Upon irradiation with 297 nm UV light, the colorless solution of compound I turned to violet with a new visible absorption band centered at 535 nm (ε = 1.08 x 104 L mol-1 cm-1) attributable to the closed-ring isomer II. The emission intensity of diarylethene I in a photostationary state was quenched to calculated 32% in hexane and 43% in PMMA film. In the experiment, the researchers used many compounds, for example, 3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9Application of 10243-15-9).
3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9) belongs to benzothiophene derivatives. Benzothiophenes are valuable heterocycles that are widely used in medicines, agrochemicals, and materials science. It is found within the chemical structures of pharmaceutical drugs such as zileuton, raloxifene, and sertaconazole, and also BTCP.Application of 10243-15-9
Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem