Complete suppression of blinking and reduced photobleaching in single MEH-PPV chains in solution

Suguru Onda, Hiroyuki Kobayashi, Tatsuhiko Hatano, Shu Furumaki, Satoshi Habuchi, Martin Vacha*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

We report photophysical properties of individual chains of the conjugated polymer MEH-PPV in a concentrated solution of polystyrene. MEH-PPV chains diffusing freely in the solution show no fluorescence blinking and reduced photobleaching. Adsorption of the chains onto a substrate in the solution leads to 34% decrease in fluorescence intensity (quantum efficiency), five-fold increase in the rate of photobleaching and appearance of blinking. The blinking is often a two-state process caused by a reversible interaction with a single quencher. The interaction causes quenching of a substantial length of the extended MEH-PPV chain.

Original languageEnglish (US)
Pages (from-to)2827-2831
Number of pages5
JournalJournal of Physical Chemistry Letters
Volume2
Issue number21
DOIs
StatePublished - Nov 3 2011
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)

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