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

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)...

Full description

Saved in:
Bibliographic Details
Published in:Chemical physics letters 1993-06, Vol.208 (3), p.283-289
Main Authors: Sakai, Hisashi, Itaya, Akira, Masuhara, Hiroshi, Sasaki, Keiji, Kawata, Satoshi
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
Solution and gel properties
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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
ISSN:0009-2614
1873-4448
DOI:10.1016/0009-2614(93)89076-T