Dihexylfluorene and N-butylcarbazole were copolymerized by solid-state oxidative coupling polymerization in the presence of anhydrous FeCl3 at room temperature. The solid-state films of the copolymers emitted blue light after heating at 150 degrees C in air for 24 h, no red-shifted emission was observed by fluorescence spectroscopy. (c) 2006 Cai Mao Zhan. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.