Synthesis and properties of a novel unsymmetrical diarylethene with a benzothiophene and a thiazole group was written by Jia, Hongjing;Pu, Shouzhi;Fan, Congbin. And the article was included in Advanced Materials Research (Durnten-Zurich, Switzerland) in 2013.COA of Formula: C9H7BrS This article mentions the following:
A new unsym. photochromic diarylethene , which is named 1-(2-methyl-benzothiophene)-2-(2,4-dimethyl-5-thiazoly)perfluorocyclopentene, was synthesized. In the meantime, its photochromic, kinetics and fluorescence properties were investigated in detail. The result indicated that this diarylethene had good thermal stability and exhibited reversible photochromism, changing the color from colorless to orange in hexane solution upon appropriate irradiation with 297 nm UV light, resp. The kinetic experiments illustrated that the cyclization/cycloreversion process of this compound was determined to be the zeroth/first reaction. The fluorescence intensity of diarylethene decreased dramatically along with the photochromism from open-ring isomer to closed-ring isomer upon irradiation with UV light in hexane solution In addition, the results demonstrated that the unsym. diarylethene compound, which we have synthesized, had attractive properties for potential application in optical storage. In the experiment, the researchers used many compounds, for example, 3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9COA of Formula: C9H7BrS).
3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9) belongs to benzothiophene derivatives. Benzothiophene is used as starting material for the synthesis of bioactive molecules. The core structure is a part of various pharmaceutical substances and natural products. It is also used in the manufacturing of dyes such as thioindigo.COA of Formula: C9H7BrS
Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem