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Title: Poly(p-phenylene vinylene) in light-emitting diodes: Nature of the lowest singlet and triplet excited states and effects of derivatization

Abstract

Poly(p-phenylene vinylene), PPV, has attracted a tremendous interest in the past few years, especially in the field of optic and electro-optic devices such as light-emitting diodes (LED`s). Here we focus our attention on three issues of prime importance when studying PPV (or its oligomers) as an emitting layer. The first topic deals with the modelling of the nature of the lowest singlet excited state (from which fluorescence originates) and of the lowest triplet excited states (also reached by the system following recombination of the charge carriers). In a second part, we analyze the way the optical transitions are affected by derivatization; we modulate the locations of the frontier levels by fixing {pi}-donor (methoxy) and {pi}-acceptor (cyano) substituents along the conjugated backbone. Finally, we investigate the metallization of the cyano-PPVs, by aluminum or alkali metals.

Authors:
; ;  [1]
  1. Universite de Mons-Hainaut, Mons (Belgium)
Publication Date:
OSTI Identifier:
126979
Report Number(s):
CONF-950402-
TRN: 95:006086-1064
Resource Type:
Conference
Resource Relation:
Conference: 209. American Chemical Society (ACS) national meeting, Anaheim, CA (United States), 2-6 Apr 1995; Other Information: PBD: 1995; Related Information: Is Part Of 209th ACS national meeting; PB: 2088 p.
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 66 PHYSICS; ORGANIC POLYMERS; EXCITED STATES; FLUORESCENCE; ALKALI METALS; CHARGE CARRIERS; LIGHT EMITTING DIODES

Citation Formats

Cornil, J, Beljonne, D, and Bredas, J L. Poly(p-phenylene vinylene) in light-emitting diodes: Nature of the lowest singlet and triplet excited states and effects of derivatization. United States: N. p., 1995. Web.
Cornil, J, Beljonne, D, & Bredas, J L. Poly(p-phenylene vinylene) in light-emitting diodes: Nature of the lowest singlet and triplet excited states and effects of derivatization. United States.
Cornil, J, Beljonne, D, and Bredas, J L. 1995. "Poly(p-phenylene vinylene) in light-emitting diodes: Nature of the lowest singlet and triplet excited states and effects of derivatization". United States.
@article{osti_126979,
title = {Poly(p-phenylene vinylene) in light-emitting diodes: Nature of the lowest singlet and triplet excited states and effects of derivatization},
author = {Cornil, J and Beljonne, D and Bredas, J L},
abstractNote = {Poly(p-phenylene vinylene), PPV, has attracted a tremendous interest in the past few years, especially in the field of optic and electro-optic devices such as light-emitting diodes (LED`s). Here we focus our attention on three issues of prime importance when studying PPV (or its oligomers) as an emitting layer. The first topic deals with the modelling of the nature of the lowest singlet excited state (from which fluorescence originates) and of the lowest triplet excited states (also reached by the system following recombination of the charge carriers). In a second part, we analyze the way the optical transitions are affected by derivatization; we modulate the locations of the frontier levels by fixing {pi}-donor (methoxy) and {pi}-acceptor (cyano) substituents along the conjugated backbone. Finally, we investigate the metallization of the cyano-PPVs, by aluminum or alkali metals.},
doi = {},
url = {https://www.osti.gov/biblio/126979}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Dec 01 00:00:00 EST 1995},
month = {Fri Dec 01 00:00:00 EST 1995}
}

Conference:
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