In this paper we report on the improvement of the photoluminescence (PL) pr
operties of poly(p-pheneylene vinylene)s (PPVs) by means of copolymerizatio
n. In this study poly(1-methoxy-4-ethylhexyloxy-2,5-phenylenevinylene) (MEH
-PPV) was copolymerized with other PPV series materials having side groups
with different steric requirements. We observed an improvement in the photo
luminescence properties of PPV-based materials when MEH-PPV was copolymeriz
ed with poly(1-methoxy-4-cyclohexylethyloxy-2,5-phenylenevinylene) (MCHE-PP
V). A 1:1 copolymer of MEH-PPV and MCHE-PPV exhibited an optimum PL intensi
ty in this series of copolymers. (C) 2001 Elsevier Science B.V. All rights
reserved.