A series of novel Ni(II) and Pd(II) complexes bearing chiral bis(β-ketoamino) ligand were synthesized characterized. The exhibited high activities for norbornene homopolymerization with only B(C 6 F 5 ) 3 as cocatalyst, complex even up to 1.38 ×10 g polymer /mol Ni ·h. All the had good thermal stability. Most importantly, also displayed 10 metal ·h toward copolymerization 5-norbornene-2-yl acet...

Ethylene-norbornene copolymers were synthesized with a homogeneous catalyst system based on bis(imino) pyridine iron with the addition of diethyl zinc (DEZ) as alkyd transfer agent to promote immortal copolymerization. The addition of DEZ did not influence the catalytic activity in copolymerization with 7.5 mmol of norbornene (NB), but in the reactions with 70 mmol, the comonomer promoted an in...

Photolithography at 157 nm requires development of new photoresists that are highly transparent at this wavelength. Transparent fluoropolymer platforms have been identified which also possess other materials properties required for chemically amplified imaging and aqueous development. Polymers of tetrafluoroethylene (TFE), a fluoroalcohol-substituted norbornene and an acid-labile acrylate ester...

Abstract The paper describes the synthesis of novel strained hydrocarbons based on a diene norbornene series, namely 5-methylene-2-norbornene, using catalytic cyclopropanation with diazomethane. study demonstrated possibility selective solely along endocyclic double bond. physicochemical properties were investigated systematically. These shown to have an advantageous combination high density, l...

A very small amount of a palladium benzylic complex as initiator brings about the vinylic addition polymerization reluctant 5-vinyl-2-norbornene.

Various poly(macromonomer)s containing sugars have been prepared by ROMP of norbornene macromonomers substituted with ROMP block copolymers containing acetal-protected sugars as the side chain, which upon removal of the protecting group affords a novel amphiphilic architecture.

Half-sandwich iridium complexes bearing hydroxyindanimine ligands were synthesized and employed as catalysts for the ROMP and vinyl-type polymerization of norbornene in the presence of methylaluminoxane (MAO).

A computational investigation has been carried out to elucidate the origin of the exclusive exo-selectivity in the Pd-catalyzed cyanoesterification of strained cyclic olefins, norbornene and norbornadiene. A hybrid density functional was selected for the level of theory with a triple-ζ quality basis set, which was proposed in an earlier study to provide an experimentally sound ground state elec...

Poly(ethylene glycol) (PEG)/polydimethylsiloxane (PDMS) hydrogels were synthesized by cross-linking norbornene end-functionalized polymers with a tetrafunctional thiol using thiol−norbornene chemistry. The swelling capacity and mechanical properties, including the Young’s modulus (E) and fracture toughness (Gc), of the hydrogels were characterized and quantified as a function of the volume frac...