Steady-state and time-resolved photoluminescence have been used to investigate the photophysical properties of the poly (para-phenylene vinylene) copolymer Super Yellow. Analysis of the steady-state photoluminescence at different temperatures enabled an estimate of the average conjugation length in spin-coated solid thin films to be made. Analysis of time-resolved photoluminescence measurements revealed matching exponential behaviour characteristic of exciton energy transfer at early times from high energy copolymer subunits to low energy subunits. The photoluminescence quantum yield was measured and it was proposed that its relatively high value was directly related to this intramolecular process. (C) 2010 Elsevier B.V. All rights reserved.