Cationic methacrylate polymers containing chiral amino acid moieties: controlled synthesis via RAFT polymerization was written by Kumar, Sonu;Roy, Saswati Ghosh;De, Priyadarsi. And the article was included in Polymer Chemistry in 2012.Safety of Benzyl benzodithioate This article mentions the following:
Two methacrylate containing amino acid based chiral monomers, Boc-L-alanine methacryloyloxyethyl ester (Boc-Ala-HEMA) and Boc-L-phenylalanine methacryloyloxyethyl ester (Boc-Phe-HEMA), were polymerized by the reversible addition-fragmentation chain transfer (RAFT) process to afford well-defined amino acid based polymers with controlled mol. weight, narrow mol. weight distribution, and precise chain end structure. Linear pseudo-first-order kinetics and number average mol. weight dependence on conversion were observed for the RAFT polymerizations Di-block copolymers were prepared by RAFT polymerization of Me methacrylate using poly(Boc-L-alanine methacryloyloxyethyl ester) or poly(Boc-L-phenylalanine methacryloyloxyethyl ester) as macro-chain transfer agents. Subsequent deprotection of the Boc group produced architectures with a primary amine moiety at the side chain, which showed pH responsiveness. The sp. rotations of both the chiral monomers and corresponding homo- and block copolymers were studied and alteration of sp. rotation due to transformation of monomer to polymer was noticed. In addition, the surface charge of various polymeric architectures was studied using dynamic light scattering (DLS) measurements. The self-assembly of block copolymer films was investigated by at. force microscopy (AFM). These pH-responsive cationic polymers can potentially be extended for the delivery of small interfering RNA. In the experiment, the researchers used many compounds, for example, Benzyl benzodithioate (cas: 27249-90-7Safety of Benzyl benzodithioate).
Benzyl benzodithioate (cas: 27249-90-7) belongs to esters. Volatile esters with characteristic odours are used in synthetic flavours, perfumes, and cosmetics. Certain volatile esters are used as solvents for lacquers, paints, and varnishes. 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.Safety of Benzyl benzodithioate
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics