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Spectroscopy and Nonlinear Absorption of α, ω-dithienyi Polyenes

Published online by Cambridge University Press:  03 September 2012

L. V. Natarajan ,
Laura A. Sowards ,
C. W. Spangler ,
N. Tang ,
P. A. Fleitz ,
R. L. Sutherland  and
T. M. Cooper
L. V. Natarajan
Affiliation:
Science Applications International Corporation, 101 Woodman Drive, Dayton, OH 45431.
Laura A. Sowards
Affiliation:
Department of Chemistry, Wright State University, Dayton, OH 45433.
C. W. Spangler
Affiliation:
Department of Chemistry, Montana State University, MT 59717.
N. Tang
Affiliation:
Materials Directorate, Wright laboratory, WPAFB, OH 45433.
P. A. Fleitz
Affiliation:
Science Applications International Corporation, 101 Woodman Drive, Dayton, OH 45431.
R. L. Sutherland
Affiliation:
Science Applications International Corporation, 101 Woodman Drive, Dayton, OH 45431.
T. M. Cooper
Affiliation:
Materials Directorate, Wright laboratory, WPAFB, OH 45433.
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Abstract

The photophysics and nonlinear absorption behaviour of a series of α, ω-dithienyl polyenes were studied in chloroform and n-octane solutions. Steady state fluorescence, fluorescence lifetime and quantum yield measurements were made. The fluorescence quantum yields were significantly lower than those of the corresponding ax,o-diphenyl polyenes. Among the dithienyl polyenes, 3,3′-substituted polyenes exhibited stronger fluorescence than those of the 2,2′-substituted. Nonlinear optical absorption experiments showed evidence of two photon absorption.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 479: Symposium S – Materials for Optical Limiting II , 1997 , 135
Copyright
Copyright © Materials Research Society 1997

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