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Excited State Absorption in Dendrimers Incorporating Diphenylaminodiphenylpolyene Moieties Via Photo-Induced Electron Transfer

Published online by Cambridge University Press:  10 February 2011

W. Sonnenberg ,
A Hyfield ,
K Short ,
L. Spangler  and
C. Spangler
W. Sonnenberg
Affiliation:
Department of Chemistry and Biochemistry, Optical Technology Center, Montana State University, Bozeman, MT 59717, wendi@chemistry-montana-edu
A Hyfield
Affiliation:
Department of Chemistry and Biochemistry, Optical Technology Center, Montana State University, Bozeman, MT 59717, wendi@chemistry-montana-edu
K Short
Affiliation:
Department of Chemistry and Biochemistry, Optical Technology Center, Montana State University, Bozeman, MT 59717, wendi@chemistry-montana-edu
L. Spangler
Affiliation:
Department of Chemistry and Biochemistry, Optical Technology Center, Montana State University, Bozeman, MT 59717, wendi@chemistry-montana-edu
C. Spangler
Affiliation:
Department of Chemistry and Biochemistry, Optical Technology Center, Montana State University, Bozeman, MT 59717, wendi@chemistry-montana-edu
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Abstract

During the past decade there has been considerable progress in the design of new organic materials for optical power limiting (OPL) applications. Among the more promising of the new material approaches are reverse saturable absorbers (RSAs) which derive their optical limiting capability from the photogeneration of highly absorbing transient excited states. Most of the previous research in this field has focused on excited state absorption from singlet or triplet states whose cross-sections are greater than the original S0 – S1 transition- However, other transient states, such as polaronic radical ions or bipolaronic diions, formed by photo-induced electron transfer, are attractive alternatives. We have initiated studies to determine if these transient charge states can be photo-generated efficiently, and if their excited states absorption and lifetimes are acceptable for current optical power limiting requirements.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 597: Symposium PP – Thin Films for Optical Waveguide Devices & Materials … , 1999 , 363
Copyright
Copyright © Materials Research Society 2000

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