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Abstract: An optically active, conjugated polymer bearing unsymmetric pendant carbazole chromophores was prepared via the Suzuki coupling of 9,9-dioctylfluorene-2,7-diboronic acid and a novel pyridine-containing compound. The polymer had a T g of 192°C and T d10 at 437°C under a nitrogen atmosphere and exhibited absorption bands at 320–400nm and displayed an additional absorption bands at 380–480nm after protonation with aq. HCl solution. The photoluminescence of the polymer shifted from 360–460nm to 460–560nm after protonation and the photoluminescence quantum yield of the polymer in THF solution was 0.88. The emission color of the polymer film changed from blue (439nm) to yellow (551nm) under an applied bias voltage of 2.5V. [Copyright &y& Elsevier]