Interchain photoluminescence in poly(phenylene vinylene) derivatives
- 15 July 1996
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 54 (4), R2308-R2310
- https://doi.org/10.1103/physrevb.54.r2308
Abstract
We calculate that in cyano-substituted poly(phenylene vinylene), CN-PPV, and poly[2-methoxy, 5-(2′ -ethyl-hexyloxy)phenylene vinylene], MEH-PPV, the lowest-energy arrangement has the chains parallel, with the perpendicular distance between chains 3.4 Å in the former case, 4.1 Å in the latter. Although there is evidence that most of the excitations created by above-band-gap light are polaron pairs or excimers in both cases, only those in CN-PPV luminesce because the smaller interchain distance results in a much larger matrix element for emission.Keywords
This publication has 18 references indexed in Scilit:
- Charge separation and photovoltaic conversion in polymer composites with internal donor/acceptor heterojunctionsJournal of Applied Physics, 1995
- Interchain Excitations in Conjugated PolymersPhysical Review Letters, 1995
- Efficient photodiodes from interpenetrating polymer networksNature, 1995
- Subpicosecond Photoinduced Electron Transfer in Semiconducting Polymer - C60 CompositesMolecular Crystals and Liquid Crystals, 1994
- Photogeneration of Polaron Pairs in Poly (Phenylene Vinylene)Molecular Crystals and Liquid Crystals, 1994
- Spatially indirect excitons as primary photoexcitations in conjugated polymersPhysical Review Letters, 1994
- Assignment of the picosecond photoinduced absorption in phenylene vinylene polymersPhysical Review B, 1994
- The efficiency and time-dependence of luminescence from poly (p-phenylene vinylene) and derivativesChemical Physics Letters, 1993
- Light-emitting diodes based on conjugated polymersNature, 1990
- Conformational analysis. 130. MM2. A hydrocarbon force field utilizing V1 and V2 torsional termsJournal of the American Chemical Society, 1977