Synthesis and properties of 1-(2-methyl-3-benzothiophene)-2-[2-methyl-5-(3-fluoro-4-chloro)phenyl-3-thienyl]perfluorocyclopentene was written by Liao, Guanming;Zheng, Chunhong;Pu, Shouzhi. And the article was included in Advanced Materials Research (Durnten-Zurich, Switzerland) in 2015.Category: benzothiophene This article mentions the following:
An asym. photochromic diarylethene 1-(2-methyl-3-benzothiophene)-2-[2-methyl-5-(3-fluoro-4-chlorophenyl)-3-thienyl]perfluorocyclopentene (I) was synthesized and its photochromic, fluorescent properties were investigated in detail. This compound exhibited remarkable photochromism, upon irradiation with 297 nm UV light, the colorless solution of I turned to violet red with a new visible absorption band centered at 538 nm (ε = 1.17 Χ 104 L mol-1 cm-1) attributable to the closed-ring isomer. The kinetic experiments showed that the cyclization and cycloreversion processes were zeroth and first order reaction, resp. Moreover, diarylethene I also exhibited obviously fluorescence switches along with the photochromism. The emission intensity of diarylethene I in a photostationary state was quenched to ca. 27% in hexane. In the experiment, the researchers used many compounds, for example, 3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9Category: benzothiophene).
3-Bromo-2-methylbenzo[b]thiophene (cas: 10243-15-9) belongs to benzothiophene derivatives. Functionalized benzothiophenes are important constructs found in molecules with wide ranging biological activity and in organic materials. Due to its aromaticity, thiophenes do not exhibit the same properties as conventional thioethers.Category: benzothiophene
Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem