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Morphology Dependence of the Optical Properties of Dalm Related Materials

Published online by Cambridge University Press:  10 February 2011

K. B. Wagner-Brown ,
K. F. Ferris ,
J. L. Kiel  and
R. A. Albanese
K. B. Wagner-Brown
Affiliation:
Conceptual MindWorks Inc., San Antonio,TX 78228
K. F. Ferris
Affiliation:
Pacific Northwest National Laboratory, Materials and Chemical Sciences Department, Richland, WA 99352
J. L. Kiel
Affiliation:
Air Force Research Laboratory, Human Effectiveness Directorate, Brooks AFB, San Antonio, TX 78235.
R. A. Albanese
Affiliation:
Air Force Research Laboratory, Human Effectiveness Directorate, Brooks AFB, San Antonio, TX 78235.
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Abstract

Diazoluminomelanin (DALM) is an electroluminescent polymer which has shown significant optical activity in response to perturbing fields. The current model for this process features optical excitation of a polymer backbone containing conducting conjugation, with subsequent energy transfer to a luminescent group. In this paper we have performed electronic structure calculations using the AM1 Hamiltonian with configuration interaction to estimate the electronic properties of two potential models for the DALM backbone. Contrary to the conventional picture of conjugation, the phenyl groups in the DALM backbone show significant twist angles (42° –55°) depending on substitutional group, resulting in localized electronic excitations.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 488: Symposium J – Electrical, Optical & Magnetic Properties of Organic IV , 1997 , 909
Copyright
Copyright © Materials Research Society 1998

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