Fluorescence dynamics of poly (N-vinylcarbazole) in fluid solution. Multivariate analysis of time-resolved fluorescence spectra

Hisashi Sakai*, Akira Itaya, Hiroshi Masuhara, Keiji Sasaki, Satoshi Kawata

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Time-resolved fluorescence spectra of poly(N-vinylcarbazole) in solution were analyzed by using a principal multicomponent spectral estimation method. It was clearly indicated that the spectra were composed of only three component fluorescence (monomer, partial overlap excimer, and sandwich excimer). Rise as well as decay curves of this component fluorscence were nonexponential and depended upon tacticity of the polymer. The partial overlap is formed not only by ultrafast trapping in the pre-existing site but also through dynamic processes such as energy migration. In tens of ns time range the excited monomer as well as the partial overlap excimer are produced via dissociation and re-activation of the sandwich excimer.

Original languageEnglish
Pages (from-to)283-289
Number of pages7
JournalChemical Physics Letters
Volume208
Issue number3-4
DOIs
StatePublished - 11 Jun 1993

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