Research on photochromic materials with synthesis and application of 1-(2-methyl-3-benzothienyl)-2-[2-methyl-(5-ethynyl)trimethylsilane-3-thienyl]perfluorocyclopentene was written by Ma, Lele;Xu, Hongyan;Liu, Gang. And the article was included in Advanced Materials Research (Durnten-Zurich, Switzerland) in 2014.Name: 3-Bromo-2-methylbenzo[b]thiophene This article mentions the following:
A new unsym. photochromic diarylethene compound, (3-benzothienyl)((5-ethynyl)trimethylsilane-3-thienyl)perfluorocyclopentene I was synthesized, and its optoelectronic properties, such as photochromism and the fluorescence spectra of diarylethene I in hexane solution was investigated. The results showed that this compound exhibited reversible photochromism in solution to yield a cyclopentabenzothienobenzothiophene closed-ring isomer II with a UV/visible absorption at 538 nm. Its fluorescence intensity decreased along with the photochromism from open-ring isomers to closed-ring isomers upon irradiation with 297 nm UV light. In the experiment, the researchers used many compounds, for example, 3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9Name: 3-Bromo-2-methylbenzo[b]thiophene).
3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9) belongs to benzothiophene derivatives. Benzothiophene scaffolds are of great importance due to its increased presence in bioactive molecules. It has been used as a raw material for the synthesis of biologically active structures and is found in pharmaceuticals such as leukotriene synthesis inhibitors and antifungals, as well as in many natural products.Name: 3-Bromo-2-methylbenzo[b]thiophene
Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem