Rotational Dynamics of a Probe in Rubbery Polymers Characterized by Time-Resolved Fluorescence Anisotropy Measurement

Hung K. Nguyen; Asuka Konomi; Shin Sugimoto; Manabu Inutsuka; Daisuke Kawaguchi; Keiji Tanaka

doi:10.1002/macp.201700329

Rotational Dynamics of a Probe in Rubbery Polymers Characterized by Time-Resolved Fluorescence Anisotropy Measurement

Hung K. Nguyen, Asuka Konomi, Shin Sugimoto, Manabu Inutsuka, Daisuke Kawaguchi, Keiji Tanaka

Applied Fine Chemistry

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

2 Citations (Scopus)

Abstract

The rotational relaxation time (τ_rot) of a fluorescent molecule, coumarin 153 (C153), dispersed in different rubbery polymers is characterized by time-resolved fluorescence anisotropy measurement, and an attempt is made to quantitatively combine it with the segmental relaxation time (τ_seg) of the corresponding matrix polymer obtained by dielectric relaxation spectroscopy. This study here demonstrates that τ_seg extrapolated to higher temperatures using the Vogel–Fulcher–Tammann law can be superimposed on τ_rot, resulting in a single curve. This behavior is common for polymers with different glass transition temperatures such as polyisoprene and acrylonitrile/butadiene copolymer, implying that the rotational dynamics of C153 is a useful tool for the characterization of polymer dynamics.

Original language	English
Article number	1700329
Journal	Macromolecular Chemistry and Physics
Volume	219
Issue number	3
DOIs	https://doi.org/10.1002/macp.201700329
Publication status	Published - Feb 1 2018

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Physical and Theoretical Chemistry
Organic Chemistry
Polymers and Plastics
Materials Chemistry

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title = "Rotational Dynamics of a Probe in Rubbery Polymers Characterized by Time-Resolved Fluorescence Anisotropy Measurement",

abstract = "The rotational relaxation time (τrot) of a fluorescent molecule, coumarin 153 (C153), dispersed in different rubbery polymers is characterized by time-resolved fluorescence anisotropy measurement, and an attempt is made to quantitatively combine it with the segmental relaxation time (τseg) of the corresponding matrix polymer obtained by dielectric relaxation spectroscopy. This study here demonstrates that τseg extrapolated to higher temperatures using the Vogel–Fulcher–Tammann law can be superimposed on τrot, resulting in a single curve. This behavior is common for polymers with different glass transition temperatures such as polyisoprene and acrylonitrile/butadiene copolymer, implying that the rotational dynamics of C153 is a useful tool for the characterization of polymer dynamics.",

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AU - Nguyen, Hung K.

AU - Konomi, Asuka

AU - Sugimoto, Shin

AU - Inutsuka, Manabu

AU - Kawaguchi, Daisuke

AU - Tanaka, Keiji

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