Evidence for dynamic heterogeneity near Tg from the time-resolved inhomogeneous broadening of optical line shapes

Ranko Richert

doi:10.1021/jp9713219

Evidence for dynamic heterogeneity near T_g from the time-resolved inhomogeneous broadening of optical line shapes

Ranko Richert

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

112 Scopus citations

Abstract

The temporal evolution of inhomogeneous spectra emitted by dye molecules in the course of their solvation within a supercooled liquid is analyzed, where the average emission energy ν(t) probes the dielectric relaxation. The observed increase in the optical line width, σ_inh(t), near the glass transition is compared to corresponding simulations under the conditions of spatially heterogeneous and homogeneous solvation dynamics. From this data on higher moments of the relaxing quantity, we conclude on the spatial variation of relaxation times.

Original language	English (US)
Pages (from-to)	6323-6326
Number of pages	4
Journal	Journal of Physical Chemistry B
Volume	101
Issue number	33
DOIs	https://doi.org/10.1021/jp9713219
State	Published - Aug 14 1997
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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10.1021/jp9713219

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title = "Evidence for dynamic heterogeneity near Tg from the time-resolved inhomogeneous broadening of optical line shapes",

abstract = "The temporal evolution of inhomogeneous spectra emitted by dye molecules in the course of their solvation within a supercooled liquid is analyzed, where the average emission energy ν(t) probes the dielectric relaxation. The observed increase in the optical line width, σinh(t), near the glass transition is compared to corresponding simulations under the conditions of spatially heterogeneous and homogeneous solvation dynamics. From this data on higher moments of the relaxing quantity, we conclude on the spatial variation of relaxation times.",

author = "Ranko Richert",

year = "1997",

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day = "14",

doi = "10.1021/jp9713219",

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T1 - Evidence for dynamic heterogeneity near Tg from the time-resolved inhomogeneous broadening of optical line shapes

AU - Richert, Ranko

PY - 1997/8/14

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N2 - The temporal evolution of inhomogeneous spectra emitted by dye molecules in the course of their solvation within a supercooled liquid is analyzed, where the average emission energy ν(t) probes the dielectric relaxation. The observed increase in the optical line width, σinh(t), near the glass transition is compared to corresponding simulations under the conditions of spatially heterogeneous and homogeneous solvation dynamics. From this data on higher moments of the relaxing quantity, we conclude on the spatial variation of relaxation times.

AB - The temporal evolution of inhomogeneous spectra emitted by dye molecules in the course of their solvation within a supercooled liquid is analyzed, where the average emission energy ν(t) probes the dielectric relaxation. The observed increase in the optical line width, σinh(t), near the glass transition is compared to corresponding simulations under the conditions of spatially heterogeneous and homogeneous solvation dynamics. From this data on higher moments of the relaxing quantity, we conclude on the spatial variation of relaxation times.

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JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

IS - 33

ER -

Evidence for dynamic heterogeneity near T_g from the time-resolved inhomogeneous broadening of optical line shapes

Abstract

ASJC Scopus subject areas

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