Rotational diffusion of Coumarin 102 in trifluoroethanol: The case for solvent attachment

R. S. Moog; D. L. Bankert; M. Maroncelli

doi:10.1021/j100110a006

Rotational diffusion of Coumarin 102 in trifluoroethanol: The case for solvent attachment

R. S. Moog, D. L. Bankert, M. Maroncelli

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

62 Scopus citations

Abstract

The rotational dynamics of Coumarin 102 (C102) in pure decalin and pure trifluoroethanol (TFE), and of a 1:1 C102:TFE complex in decalin, are examined using time-resolved fluorescence anisotropy measurements. The rotation of C102 in decalin is well-described by the Debye-Stokes-Einstein hydrodynamic model with slip boundary conditions as is the 1:1 complex. The reduced rotation time, τ_r/η, of C102 in pure TFE is significantly larger than its value in pure decalin but is indistinguishable from that of the complex in decalin. These results suggest that the rotation of C102 in TFE can be interpreted as the rotation of a 1:1 C102:TFE complex following the hydrodynamic model with slip boundary conditions.

Original language	English (US)
Pages (from-to)	1496-1501
Number of pages	6
Journal	Journal of physical chemistry
Volume	97
Issue number	8
DOIs	https://doi.org/10.1021/j100110a006
State	Published - 1993

All Science Journal Classification (ASJC) codes

General Engineering
Physical and Theoretical Chemistry

Access to Document

10.1021/j100110a006

Cite this

@article{d0e6cc87f62d4d059ca806361288fc3c,

title = "Rotational diffusion of Coumarin 102 in trifluoroethanol: The case for solvent attachment",

abstract = "The rotational dynamics of Coumarin 102 (C102) in pure decalin and pure trifluoroethanol (TFE), and of a 1:1 C102:TFE complex in decalin, are examined using time-resolved fluorescence anisotropy measurements. The rotation of C102 in decalin is well-described by the Debye-Stokes-Einstein hydrodynamic model with slip boundary conditions as is the 1:1 complex. The reduced rotation time, τr/η, of C102 in pure TFE is significantly larger than its value in pure decalin but is indistinguishable from that of the complex in decalin. These results suggest that the rotation of C102 in TFE can be interpreted as the rotation of a 1:1 C102:TFE complex following the hydrodynamic model with slip boundary conditions.",

author = "Moog, {R. S.} and Bankert, {D. L.} and M. Maroncelli",

year = "1993",

doi = "10.1021/j100110a006",

language = "English (US)",

volume = "97",

pages = "1496--1501",

journal = "Journal of physical chemistry",

issn = "0022-3654",

publisher = "American Chemical Society",

number = "8",

}

TY - JOUR

T1 - Rotational diffusion of Coumarin 102 in trifluoroethanol

T2 - The case for solvent attachment

AU - Moog, R. S.

AU - Bankert, D. L.

AU - Maroncelli, M.

PY - 1993

Y1 - 1993

N2 - The rotational dynamics of Coumarin 102 (C102) in pure decalin and pure trifluoroethanol (TFE), and of a 1:1 C102:TFE complex in decalin, are examined using time-resolved fluorescence anisotropy measurements. The rotation of C102 in decalin is well-described by the Debye-Stokes-Einstein hydrodynamic model with slip boundary conditions as is the 1:1 complex. The reduced rotation time, τr/η, of C102 in pure TFE is significantly larger than its value in pure decalin but is indistinguishable from that of the complex in decalin. These results suggest that the rotation of C102 in TFE can be interpreted as the rotation of a 1:1 C102:TFE complex following the hydrodynamic model with slip boundary conditions.

AB - The rotational dynamics of Coumarin 102 (C102) in pure decalin and pure trifluoroethanol (TFE), and of a 1:1 C102:TFE complex in decalin, are examined using time-resolved fluorescence anisotropy measurements. The rotation of C102 in decalin is well-described by the Debye-Stokes-Einstein hydrodynamic model with slip boundary conditions as is the 1:1 complex. The reduced rotation time, τr/η, of C102 in pure TFE is significantly larger than its value in pure decalin but is indistinguishable from that of the complex in decalin. These results suggest that the rotation of C102 in TFE can be interpreted as the rotation of a 1:1 C102:TFE complex following the hydrodynamic model with slip boundary conditions.

UR - http://www.scopus.com/inward/record.url?scp=0001050132&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0001050132&partnerID=8YFLogxK

U2 - 10.1021/j100110a006

DO - 10.1021/j100110a006

M3 - Article

AN - SCOPUS:0001050132

SN - 0022-3654

VL - 97

SP - 1496

EP - 1501

JO - Journal of physical chemistry

JF - Journal of physical chemistry

IS - 8

ER -

Rotational diffusion of Coumarin 102 in trifluoroethanol: The case for solvent attachment

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this