Solvation dynamics in ethanol

Shyh Gang Su; John D. Simon

doi:10.1021/j100295a008

Solvation dynamics in ethanol

Shyh Gang Su, John D. Simon

Department of Chemistry

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

85 Citations (Scopus)

Abstract

Solvation dynamics in ethanol were studied by measuring the time-resolved Stokes shift of the emission from the twisted intramolecular charge-transfer state of bis(4-(methylamino)phenyl) sulfone (DMAPS). The time scale of the spectral relaxation, τ_S, was determined from 0 to -60°C. Near 0°C, τ_S is comparable to the longitudinal relaxation time of the solvent, τ_L, in agreement with predictions based on dielectric continuum models. However, with decreasing temperature, τ_S falls between τ_L and the Debye rotational relaxation time, τ_D. The deviations of the solvation times from that predicted by a continuum model for the solvent are discussed in terms of molecular details of the solvent which are not included in the simple continuum descriptions.

Original language	English
Pages (from-to)	2693-2696
Number of pages	4
Journal	Journal of Physical Chemistry
Volume	91
Issue number	11
DOIs	https://doi.org/10.1021/j100295a008
Publication status	Published - 1987 Jan 1

All Science Journal Classification (ASJC) codes

Engineering(all)
Physical and Theoretical Chemistry

Access to Document

10.1021/j100295a008

Cite this

@article{8a9cf68d110042fb8ee8200fd1c94746,

title = "Solvation dynamics in ethanol",

abstract = "Solvation dynamics in ethanol were studied by measuring the time-resolved Stokes shift of the emission from the twisted intramolecular charge-transfer state of bis(4-(methylamino)phenyl) sulfone (DMAPS). The time scale of the spectral relaxation, τS, was determined from 0 to -60°C. Near 0°C, τS is comparable to the longitudinal relaxation time of the solvent, τL, in agreement with predictions based on dielectric continuum models. However, with decreasing temperature, τS falls between τL and the Debye rotational relaxation time, τD. The deviations of the solvation times from that predicted by a continuum model for the solvent are discussed in terms of molecular details of the solvent which are not included in the simple continuum descriptions.",

author = "Su, {Shyh Gang} and Simon, {John D.}",

year = "1987",

month = jan,

day = "1",

doi = "10.1021/j100295a008",

language = "English",

volume = "91",

pages = "2693--2696",

journal = "Journal of Physical Chemistry",

issn = "0022-3654",

publisher = "American Chemical Society",

number = "11",

}

TY - JOUR

T1 - Solvation dynamics in ethanol

AU - Su, Shyh Gang

AU - Simon, John D.

PY - 1987/1/1

Y1 - 1987/1/1

N2 - Solvation dynamics in ethanol were studied by measuring the time-resolved Stokes shift of the emission from the twisted intramolecular charge-transfer state of bis(4-(methylamino)phenyl) sulfone (DMAPS). The time scale of the spectral relaxation, τS, was determined from 0 to -60°C. Near 0°C, τS is comparable to the longitudinal relaxation time of the solvent, τL, in agreement with predictions based on dielectric continuum models. However, with decreasing temperature, τS falls between τL and the Debye rotational relaxation time, τD. The deviations of the solvation times from that predicted by a continuum model for the solvent are discussed in terms of molecular details of the solvent which are not included in the simple continuum descriptions.

AB - Solvation dynamics in ethanol were studied by measuring the time-resolved Stokes shift of the emission from the twisted intramolecular charge-transfer state of bis(4-(methylamino)phenyl) sulfone (DMAPS). The time scale of the spectral relaxation, τS, was determined from 0 to -60°C. Near 0°C, τS is comparable to the longitudinal relaxation time of the solvent, τL, in agreement with predictions based on dielectric continuum models. However, with decreasing temperature, τS falls between τL and the Debye rotational relaxation time, τD. The deviations of the solvation times from that predicted by a continuum model for the solvent are discussed in terms of molecular details of the solvent which are not included in the simple continuum descriptions.

UR - http://www.scopus.com/inward/record.url?scp=1542382713&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=1542382713&partnerID=8YFLogxK

U2 - 10.1021/j100295a008

DO - 10.1021/j100295a008

M3 - Article

AN - SCOPUS:1542382713

SN - 0022-3654

VL - 91

SP - 2693

EP - 2696

JO - Journal of Physical Chemistry

JF - Journal of Physical Chemistry

IS - 11

ER -

Solvation dynamics in ethanol

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this