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

doi:10.1021/jz2012512

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 journal › Article › peer-review

28 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 language	English (US)
Pages (from-to)	2827-2831
Number of pages	5
Journal	Journal of Physical Chemistry Letters
Volume	2
Issue number	21
DOIs	https://doi.org/10.1021/jz2012512
State	Published - Nov 3 2011
Externally published	Yes

ASJC Scopus subject areas

General Materials Science
Physical and Theoretical Chemistry

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title = "Complete suppression of blinking and reduced photobleaching in single MEH-PPV chains in solution",

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.",

author = "Suguru Onda and Hiroyuki Kobayashi and Tatsuhiko Hatano and Shu Furumaki and Satoshi Habuchi and Martin Vacha",

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T1 - Complete suppression of blinking and reduced photobleaching in single MEH-PPV chains in solution

AU - Onda, Suguru

AU - Kobayashi, Hiroyuki

AU - Hatano, Tatsuhiko

AU - Furumaki, Shu

AU - Habuchi, Satoshi

AU - Vacha, Martin

PY - 2011/11/3

Y1 - 2011/11/3

N2 - 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.

AB - 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.

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U2 - 10.1021/jz2012512

DO - 10.1021/jz2012512

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AN - SCOPUS:80455174353

SN - 1948-7185

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SP - 2827

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JO - Journal of Physical Chemistry Letters

JF - Journal of Physical Chemistry Letters

IS - 21

ER -

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

Abstract

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