Zou, Qi published the artcileNew photochromic chemosensors for Hg2+ and F–, SDS of cas: 219537-97-0, the publication is Tetrahedron (2011), 67(5), 915-921, database is CAplus.
Two new chemosensors (1a and 1b) based on photochromic dithienylcyclopentene were designed and synthesized, and their spectral behaviors toward various metal ions and anions were studied. Compounds show excellent optical properties and distinguish Hg2+ and F– in CH3CN. Job’s plot reveals that the presence of Hg2+ induces the formation of a 1:1 complex between 1a or 1b and Hg2+. From the spectral responses and 1H NMR anal., the deprotonation of the thioamide protons is proposed to explain the sensing mechanism for 1a and 1b toward F–. 1A and 1b exhibit ring-opening and ring-closing photoisomerization with UV-visible light irradiation Also, their photochromic properties can be modulated by Hg2+ and F– ions. Also, 1a and 1b in photostationary states become promising sensors for Hg2+ and F– with high selectivity.
Tetrahedron 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 C14H17BClNO2, SDS of cas: 219537-97-0.
Referemce:
https://en.wikipedia.org/wiki/Chloride,
Chlorides – an overview | ScienceDirect Topics