32."Phenylethynylstyrene-Cobalt Carbonyl Block Copolymer Composites," Liliana A. Mîinea, Laura B. Sessions, Kjell D. Ericson, David S. Glueck, Robert B. Grubbs, Macromolecules 2004, 37, 8967-8972.

Abstract Treatment of a diblock copolymer containing an alkyne-functional block (polystyrene-block-poly(4-(phenylethynyl)styrene)) with dicobalt octacarbonyl (Co₂(CO)₈) leads to selective incorporation of Co₂(CO)₆ groups in the alkyne block. Examination of these composites in bulk and thin films by transmission electron microscopy reveals the formation of ordered phase-separated morphologies typical of block copolymers. Heating the polymer-cobalt carbonyl adducts at moderate temperatures (110 °C) leads to loss of CO and formation of insoluble polymer cobalt composites. High-temperature thermolysis of these materials leads to formation of carbonaceous materials containing cobalt nanoparticles.