Blinking of single dye molecules in a polymer matrix is correlated with free volume in polymers

Kouta Suzuki; Satoshi Habuchi; Martin Vacha

doi:10.1016/j.cplett.2011.02.041

Blinking of single dye molecules in a polymer matrix is correlated with free volume in polymers

Kouta Suzuki, Satoshi Habuchi, Martin Vacha^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Blinking of single cyanine (DiI) molecules dispersed in poly(methyl acrylate) and in a series of poly(alkyl methacrylate) matrices is reported. The blinking dynamics is characterized by relaxation times obtained from the decay of autocorrelation function of individual DiI molecules. The mean relaxation times are independent of the polymer composition, molecular weight or the temperature. On the other hand, we observed a systematic increase of the fraction of molecules that show the blinking with increasing temperature difference T - T_g (T_g being the glass transition temperature). The results are discussed in terms of an increase of free volume around DiI molecules with increasing temperature.

Original language	English (US)
Pages (from-to)	157-160
Number of pages	4
Journal	Chemical Physics Letters
Volume	505
Issue number	4-6
DOIs	https://doi.org/10.1016/j.cplett.2011.02.041
State	Published - Mar 30 2011
Externally published	Yes

ASJC Scopus subject areas

General Physics and Astronomy
Physical and Theoretical Chemistry

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10.1016/j.cplett.2011.02.041

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title = "Blinking of single dye molecules in a polymer matrix is correlated with free volume in polymers",

abstract = "Blinking of single cyanine (DiI) molecules dispersed in poly(methyl acrylate) and in a series of poly(alkyl methacrylate) matrices is reported. The blinking dynamics is characterized by relaxation times obtained from the decay of autocorrelation function of individual DiI molecules. The mean relaxation times are independent of the polymer composition, molecular weight or the temperature. On the other hand, we observed a systematic increase of the fraction of molecules that show the blinking with increasing temperature difference T - Tg (Tg being the glass transition temperature). The results are discussed in terms of an increase of free volume around DiI molecules with increasing temperature.",

author = "Kouta Suzuki and Satoshi Habuchi and Martin Vacha",

year = "2011",

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doi = "10.1016/j.cplett.2011.02.041",

language = "English (US)",

volume = "505",

pages = "157--160",

journal = "Chemical Physics Letters",

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TY - JOUR

T1 - Blinking of single dye molecules in a polymer matrix is correlated with free volume in polymers

AU - Suzuki, Kouta

AU - Habuchi, Satoshi

AU - Vacha, Martin

PY - 2011/3/30

Y1 - 2011/3/30

N2 - Blinking of single cyanine (DiI) molecules dispersed in poly(methyl acrylate) and in a series of poly(alkyl methacrylate) matrices is reported. The blinking dynamics is characterized by relaxation times obtained from the decay of autocorrelation function of individual DiI molecules. The mean relaxation times are independent of the polymer composition, molecular weight or the temperature. On the other hand, we observed a systematic increase of the fraction of molecules that show the blinking with increasing temperature difference T - Tg (Tg being the glass transition temperature). The results are discussed in terms of an increase of free volume around DiI molecules with increasing temperature.

AB - Blinking of single cyanine (DiI) molecules dispersed in poly(methyl acrylate) and in a series of poly(alkyl methacrylate) matrices is reported. The blinking dynamics is characterized by relaxation times obtained from the decay of autocorrelation function of individual DiI molecules. The mean relaxation times are independent of the polymer composition, molecular weight or the temperature. On the other hand, we observed a systematic increase of the fraction of molecules that show the blinking with increasing temperature difference T - Tg (Tg being the glass transition temperature). The results are discussed in terms of an increase of free volume around DiI molecules with increasing temperature.

UR - http://www.scopus.com/inward/record.url?scp=79952818775&partnerID=8YFLogxK

U2 - 10.1016/j.cplett.2011.02.041

DO - 10.1016/j.cplett.2011.02.041

M3 - Article

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SN - 0009-2614

VL - 505

SP - 157

EP - 160

JO - Chemical Physics Letters

JF - Chemical Physics Letters

IS - 4-6

ER -

Blinking of single dye molecules in a polymer matrix is correlated with free volume in polymers

Abstract

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