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Theoretical Investigation Of Model Polymers For Eumelanins. Ii. Isolated Defects
Authors
Caldas M.J.
Galvao D.S.
Publication date
26 November 2015
Publisher
Abstract
We investigate here defects in initially ordered polymers of 5,6-indolequinone, in one or other redox form. The defects studied include aggregation of the carboxyl radical into one skeleton monomer, the aggregation of a host monomer in a lateral misplaced position, and faults in the polymerization sequencing. Our study is carried out, as in the first paper I, through Hückel π-electron theory, and results are compared to the perfect structures in I. Our results indicate that the end-type defect suggested as an electron capture center in I is not deactivated by these other structural defects, and that new capture centers might be introduced that could also be responsible for the acceptor behavior of melanins. © 1990 American Institute of Physics.9342848285
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Last time updated on 10/04/2020