Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/99054
Type: Artigo de periódico
Title: Theoretical Investigation Of Model Polymers For Eumelanins. Ii. Isolated Defects
Author: Galvao D.S.
Caldas M.J.
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.
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Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-0009883908&partnerID=40&md5=2c9599bfbab3b94a91787b39c9d1c7bd
Date Issue: 1990
Appears in Collections:Unicamp - Artigos e Outros Documentos

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