2 results about "Carbanion" patented technology

The present application relates to a Michael Addition curable composition, coating composition containing the same and coated article made therefrom. In particular, the Michael Addition curable composition comprises at least one reactive donor capable of providing two or more nucleophilic carbanions; at least one reactive acceptor comprising two or more carbon-carbon double bonds; and at least one catalyst for catalyzing a Michael Addition crosslinking reaction between the at least one reactive donor and the at least one reactive acceptor, wherein the at least one reactive donor comprises at least one branched polyester comprising at least one polyester backbone and at least one —C(O)—CH2—C(O)-moiety; wherein the at least one polyester backbone is derived from an alcohol component comprising at least one alcohol having at least three hydroxyl groups; and wherein the at least one branched polyester has a —C(O)—CH2—C(O)-moiety equivalent of no more than 700 g / mol.

This article describes metal complexes and their preparation and use. In some forms, metal complexes contain C NHC ^C^C NHC (NHC=N-heterocyclic carbene) clamp ligands with a through-bonded donor-acceptor configuration. The donor (e.g., an amide group) is coordinated to a metal ion, while the acceptor (e.g., 2,4,6-triphenyl-1,3,5-triazine and its derivatives) is incorporated into the clamp ligand and located at the para position of the carbanion. In some forms, the incorporation of the acceptor (e.g., 2,4,6-triphenyl-1,3,5-triazine and its derivatives) can be applied to clamp ligands N^C^N and / or C^C^N, wherein in the metal complex, C... NHC ^C^C NHC ligand donor C NHC It can be replaced with a neutral N- donor and / or a carbanion. The design of the metal complexes disclosed herein can lead to improved photophysical properties, such as a shortened emission lifetime and / or an increased radiative decay rate constant, thereby improving their device performance in OLED devices.