Yuan, Jingjing published the artcileSubstituent position effect on photochromic properties of aldehyde-functionalized dithienylethenes, SDS of cas: 219537-97-0, the publication is Molecular Crystals and Liquid Crystals (2020), 712(1), 24-30, database is CAplus.
Three sym. dithienylethenes bearing two electron-withdrawing aldehyde groups have been synthesized. And their structures were confirmed by 1H NMR, 13C NMR and HRMS (ESI). Investigation on photochromic properties indicated that they had good photochromic behavior with excellent fatigue resistance upon irradiation with UV or visible light. And it was found that the aldehyde substituent position had a significant effect on their photochromic properties. The DFT calculations further validated those exptl. results for their photochromic behavior. Furthermore, they may be used as versatile building blocks to construct novel photochromic materials.
Molecular Crystals and Liquid Crystals published new progress about 219537-97-0. 219537-97-0 belongs to chlorides-buliding-blocks, auxiliary class Fused/Partially Saturated Cycles,Cyclopentenes, name is 5-Chloro-3-[2-(5-chloro-2-methylthien-3-yl)cyclopent-1-en-1-yl]-2-methylthiophene, and the molecular formula is C37H30ClIrOP2, SDS of cas: 219537-97-0.
Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics