Summary: Reversible addition fragmentation chain transfer (RAFT) polymerization of pentafluorophenyl methacrylate (PFMA) was carried out in the presence of cumyldithiobenzoate and 4‐cyano‐4‐((thiobenzoyl)sulfanyl)pentanoic acid, respectively. These chain transfer agents with 2,2′‐azoisobutyronitrile (AIBN) as initiator yielded the active ester polymer poly(PFMA) with $\overline M _{\rm n}$ up to 17 000 g · mol−1 and low polydispersity index ($\overline M _{\rm w} /\overline M _{\rm n}$ < 1.2). Kinetic analysis using 19F NMR spectroscopy and gel permeation chromatography (GPC) measurements showed controlled polymerization behavior for both chain transfer agents. Successful preparation of linear diblock copolymers consisting of an active ester block and methyl methacrylate, N‐acryloylmorpholine, or N,N‐diethylacrylamide, respectively, could be demonstrated. These polymers could easily react with amines in a polymer analogous reaction to form multifunctional polymers.
magnified image
Deck the walls: The principles of coordination chemistry and multidentate ligand design have been used to functionalize the surface of highly inert MoS2 nanoparticles. In this approach the tetradentate nitrilotriacetic acid ligand was coupled either to a fluorescent ligand (for detection) or to a reactive polymer, which serves as an anchor to the sulfide and oxide surfaces of inorganic fullerene/MoS2 and TiO2 nanorods, respectively (see picture).
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.