Abstract: Methods to form a polymer by ring-opening polymerization include reacting, a mixture comprising a monomer, an accelerator, an initiator, and a catalyst comprising a 1,1,1,3,3,3-hexafluoropropan-2-ol-2-yl group to form the polymer. Also disclosed are polymers including a residual amount of the catalyst in an amount greater than 0 weight percent.

Abstract: A process for the preparation of polyesters or polycarbonates including (i) the provision of cyclic esters or cyclic carbonates, (ii) polymerizing by ring-opening in the presence of a betaine based metal-free catalyst showing formula ?X—R1—Y+(R2)3 wherein X is S, O or Se, Y is N or P, R1 is linear or cyclic alkyl or aryl, and R2 is linear or cyclic alkyl. and under polymerizing conditions in the presence of an alcohol or amine based initiator.

Abstract: The invention relates to a organic field effect transistor device comprising: an organic semiconductor layer; a source electrode arranged in electronic contact with the said organic semiconductor; a drain electrode arranged in electronic contact with the said organic semiconductor; a gate electrode; an electrolyte layer arranged between said gate electrode and said organic semiconductor layer; wherein the organic semiconductor layer comprises a semiconducting polymeric material comprising one or more blocks of conjugated polymer combined with one or more blocks of copolymer; preferably an amphiphilic copolymer. Also a method of producing the device, and a polyanionic polymer is provided by the invention.

Abstract: Methods to form a polymer by ring-opening polymerization include reacting, a mixture comprising a monomer, an accelerator, an initiator, and a catalyst comprising a 1,1,1,3,3,3-hexafluoropropan-2-ol-2-yl group to form the polymer. Also disclosed are polymers including a residual amount of the catalyst in an amount greater than 0 weight percent.