NDLI: Rotational Relaxation of Linear π-Systems with Flexible Side Chains in Solution

Content Provider	Springer Nature Link
Author	Grummt, Ulrich W. Birckner, Eckhard Gade, Reinhold
Copyright Year	2006
Abstract	The classical hydrodynamic theory for Brownian rotational motion is applied to model compounds of conjugated polymers with alkoxy side chains of variable length. Theory predicts two rotational relaxation times for these types of molecules with the dipole transition moment parallel to the longest axis whereas experiments reveal only one. The rotational relaxation times and their relative amplitudes were calculated for a wide span of axial ratios of a general ellipsoid. In this way, the range in the axial ratios is obtained such that there is a chance to detect both rates experimentally. Rotational relaxation times of five particular molecules were measured in liquid n-butane. Theoretical calculations using ellipsoid parameters obtained from molecular dynamics calculations compare well with experimental results. Calculation of the rotational relaxation times from the autocorrelation function of the transition dipole moment vector requires significantly greater computational effort.
Starting Page	163
Ending Page	170
Page Count	8
File Format	PDF
ISSN	10530509
Journal	Journal of Fluorescence
Volume Number	17
Issue Number	2
e-ISSN	15734994
Language	English
Publisher	Kluwer Academic Publishers-Plenum Publishers
Publisher Date	2007-02-01
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Molecular dynamics Emission anisotropy Conjugated polymers Fluorescence Energy migration Analytical Chemistry Biochemistry Biotechnology Biophysics/Biomedical Physics Biomedicine general
Content Type	Text
Resource Type	Article
Subject	Sociology and Political Science Spectroscopy Law Biochemistry Clinical Biochemistry Clinical Psychology

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