Puzzling Catalysis: A variated set of cationic or neutral square-planar rhodium complexes bearing a N-heterocyclic carbene and π-acceptor ligands have been synthesized. Divergent catalytic outcomes for phenylacetylene-methanol transformations resulted in function on each particular combination ligands, including alkyne hydroalkoxylation, dimerization polymerization reactions.

The cationic nickel(II) complexes [(η-C3H5)Ni(SbPh3)2][B(3,5-(CF3)2C6H3)4] (2) and [(η3C3H5)Ni(SbPh3)2][Al(OC(CF3)3)4] (3) were prepared and their polymerization activities in aqueous systems were compared with [(η-C3H5)Ni(η-BHT)][B(3,5-(CF3)2C6H3)4] (1) (BHT ) 3,5-di-tert-butyl-4-hydroxytoluene). Cispolybutadiene is formed in nonaqueous solution polymerization. The presence of water decreases ...

Renewable natural and synthetic basic substances can be used to produce biodegradable polymers. Several methods of the polymerization terpene limonene have been evaluated. The evaluated are radical polymerization, cationic thiol-ene polymerization. free-radical with azobisisobutyronitrile (AIBN) as an initiator was carried out. out using AlCl3 a catalyst. copolymerization mercaptoethanol, 2-mer...

N-Methylpyridinium esters derivatives of 2-methylbenzothiazole hemicyanine dyes photoinitiators/photosensitizers derived from N-propyl-3-[N-2-methylbenzothiazolo]-4-pyridyno phenylacetic acid ester diiodide and N-propyl-3-[N-2-me]thylbenzothiazolo]-4-pyridino diphenylacetic acid ester diiodide were synthesized and proposed as new photoinitiators of polymerization of 2-ethyl-(2-hydroxymethyl)-1,...

A short but up-to-date review on the role of dyes in the photoinitiation processes of polymerization reactions is presented. Radical and cationic reactions are largely encountered in the radiation curing and the imaging areas for use in traditional coating applications as well as in high tech sectors such as nanofabrication, computer-to-plate processing, laser direct imaging, manufacture of opt...

Previous investigations on solid state polymerization are reviewed, and a few examples of new experimental results are added. Radiation-induced polymerizations of methyl methacrylate in the supercooled liquid phase, and of cyclohexene oxide in the plastic crystalline phase, have been examined. Polymerizations of acrylamide and N-vinylcarbazole were investigated on a solid surface with initiatio...

We evaluate the physical properties that allow for eÆcient volume holographic recording utilizing photoinitiated (cationic-ring-opening) polymerization. We primarily identify monomer di usive transport that contributes to grating development even after exposure at high intensities, yielding high recording sensitivity. The Physical Properties of Volume Holographic Recording utilizing Photoinitia...

Living cationic polymerization is known for a good control over chain growth yielding polymers with well-defined molar mass distributions and low dispersities. However, the practical challenges involved in synthesis of poly(vinyl ether)s limited suitable post-polymerization modifications (PPM) via chemoselective click reactions. Herein successful controlled vinyl ethers bearing pendant CC doub...