Absorption spectra of radical ions of polymers having carbazolyl chromophores

Hiroshi Masuhara*, Kazuhito Yamamoto, Naoto Tamai, Kazushige Inoue, Noboru Mataga

*Corresponding author for this work

Research output: Contribution to journalArticle

35 Scopus citations


The fluorescent states of poly(N-vinylcarbazole) with different degrees of polymerization, poly[2-(N-carbazolyl)ethyl vinyl ether], and polyurethanes having a 1,2-trans-dicarbazolylcyclobutane group were quenched in DMF by an electron donor or acceptor. Absorption spectra of the polymer ions produced were measured by using a N2 gas laser photolysis system. The poly(N-vinylcarbazole) cation showed a spectrum which could be reproduced by a superposition of the bands of the sandwich dimer cation, the second dimer cation with a partial overlap between two carbazolyl groups, and the third dimer cation with another geometry. On the other hand, other polymers gave almost the same spectrum as that of the third dimer cation. The spectrum of polymer anions was identical with that of the reference monomer anion. These results indicate that the produced charge in the polymer is not delocalized over chromophores but trapped in some sites.

Original languageEnglish
Pages (from-to)3971-3974
Number of pages4
JournalJournal of physical chemistry
Issue number18
StatePublished - 1 Jan 1984

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