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Oleg Mirzov

Systemarkitekt

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Polydispersity of the photoluminescence quantum yield in single conjugated polymer chains

Författare

  • Oleg Mirzov
  • Ivan Scheblykin

Summary, in English

The conjugated polymer poly(2-methoxy-5-(2'-ethylhexyloxy)-1,4-pheiiylene vinylene) (MEH-PPV) was studied by a single-molecule imaging technique. A comparison of statistical distributions of fluorescence intensity with molecular weight distributions revealed that the distribution of the photoluminescence quantum yield of the single polymer chains under study is significantly asymmetric, with a polydispersity greater than or similar to 2. The result implies that there are molecules whose quantum yield is a few times higher than the ensemble quantum yield. This conclusion Suggests a possibility of a great improvement of the photoluminescence quantum yield of MEH-PPV, which is known to be several times less than 1. (c) 2005 Elsevier B.V.. All rights reserved.

Avdelning/ar

  • Kemisk fysik

Publiceringsår

2005

Språk

Engelska

Sidor

217-222

Publikation/Tidskrift/Serie

Chemical Physics

Volym

318

Issue

3

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Atom and Molecular Physics and Optics

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0301-0104