High luminescence from a substituted polythiophene in a solvent with low solubility

Authors
Theander, M Svensson, M Ruseckas, A Zigmantas, D Sundstrom, V Andersson, MR Inganas, O
Citation
M. Theander et al., High luminescence from a substituted polythiophene in a solvent with low solubility, CHEM P LETT, 337(4-6), 2001, pp. 277-283
Citations number
25
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CHEMICAL PHYSICS LETTERS
ISSN journal
00092614 → ACNP
Volume
337
Issue
4-6
Year of publication
2001
Pages
277 - 283
Database
ISI
SICI code
0009-2614(20010406)337:4-6<277:HLFASP>2.0.ZU;2-K
Abstract
Steady-state and rime-resolved photoluminescence (PL) is used to probe diff erent states of order in highly regular poly(3-(2'-methoxy-5'-octylphenyl)t hiophene) (POMeOPT). In a good solvent (chloroform) the polymer has a PL yi eld of 0.33 and in a solvent with low solubility (mixture of chloroform and toluene) a new phase appears with higher PL yield (0.50). The new phase is attributed to micro-crystals formed by the regular part of the polymer whi ch have low solubility in toluene. The crystallites have highly structured and redshifted electronic transitions compared with chains which are dissol ved. (C) 2001 Published by Elsevier Science B.V.