A poly(-olefin) copolymer obtained from the polymerization of at least one -olefin having from 2 to about 20 carbon atoms and at least one bulky olefin, the process comprising polymerizing the monomers in the presence of hydrogen and a catalytically effective amount of a catalyst comprising the product obtained by combining a metallocene procatalyst with a cocatalyst; lubricant compositions comprising such poly(-olefin) copolymer; and a method for improving the viscosity index of a lubricant composition using such poly(-olefin) copolymer.

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> Transition metal complexes in the controlled synthesis of polyolefins substituted with functional groups

> Method for producing phosphor having a high brightness

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