RAFT Polymerization of S-Vinyl Sulfide Derivatives and Synthesis of Block Copolymers Having Two Distinct Optoelectronic Functionalities was written by Nakabayashi, Kazuhiro;Abiko, Yohei;Mori, Hideharu. And the article was included in Macromolecules (Washington, DC, United States) in 2013.Formula: C14H12S2 This article mentions the following:
Well-defined sulfur-containing polymers and block copolymers were synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization of S-vinyl sulfide derivatives, in which the thioether moiety is directly connected to the vinyl group. We initially investigated RAFT polymerization of four different S-vinyl sulfide derivatives, Ph vinyl sulfide (PVS), 4-chlorophenyl vinyl sulfide (CPVS), 2,4-dichlorophenyl vinyl sulfide (DCPVS), and 4-bromophenyl vinyl sulfide (BPVS). Three xanthate-type chain transfer agents (CTAs), a dithiocarbamate-type CTA, and a dithioester-type CTA were compared for these RAFT polymerizations Reasonable control of the polymerization of PVS was confirmed by an observed linear increase in the mol. weight with the conversion, feasibility to control mol. weight based on the ratio of monomer consumed to the amount of CTA used, chain end structure determined by 1H NMR, and chain extension experiment The RAFT polymerization of the bromo-substituted monomer (BPVS) also proceeded in the controlled fashion under the same conditions. Incorporation of optoelectronic groups, including anthracene, fluorene, diphenylamine, and phenothiazine on the bromophenyl pendant group of poly(BPVS) were accomplished by palladium-catalyzed postmodifications. We also investigated characteristic optoelectronic properties of modified polymers and block copolymers with two distinct electronic functionalities. In the experiment, the researchers used many compounds, for example, Benzyl benzodithioate (cas: 27249-90-7Formula: C14H12S2).
Benzyl benzodithioate (cas: 27249-90-7) belongs to esters. Esters are widespread in nature and are widely used in industry. In nature, fats are in general triesters derived from glycerol and fatty acids. Esters are responsible for the aroma of many fruits. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. This ability to participate in hydrogen bonding confers some water-solubility.Formula: C14H12S2
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics