The effect of pressure on the luminescence of poly[2-methoxy-5-(2 '-ethyl hexoxy)-p-phenylene vinylene] [MEH-PPV] in two copolymers of vinylchloride

Authors
Li, Y Yang, G Zhu, A Drickamer, HG
Citation
Y. Li et al., The effect of pressure on the luminescence of poly[2-methoxy-5-(2 '-ethyl hexoxy)-p-phenylene vinylene] [MEH-PPV] in two copolymers of vinylchloride, CHEM P LETT, 310(3-4), 1999, pp. 259-264
Citations number
15
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CHEMICAL PHYSICS LETTERS
ISSN journal
00092614 → ACNP
Volume
310
Issue
3-4
Year of publication
1999
Pages
259 - 264
Database
ISI
SICI code
0009-2614(19990903)310:3-4<259:TEOPOT>2.0.ZU;2-I
Abstract
The change of emission efficiency with pressure is presented for poly[2-met hoxy-5 -(2'-ethylhexoxy)-p-phenylene vinylene] (MEH-PPV) in dilute solution in poly(vinyl chloride) (PVC1), poly(vinyl acetate) (PVA) and two copolyme rs involving VCl. The drop in efficiency below 30 kbar in all media correla tes with the increase in time of transport of the electron from the excitin g to the emitting state. The increase in luminescent yield above 30 kbar fo r PVCl and the copolymers correlates with the increase in Forster energy tr ansfer (FET) efficiency. For PVA there is no increase in FET at higher pres sure and no increase in luminescent efficiency. (C) 1999 Elsevier Science B .V. All rights reserved.