Microviscosity in polyacrylamide gels with pendant triphenyl-methane leuco derivatives: picosecond time-resolved fluorescence study

Naoto Tamai*, Masazumi Ishikawa, Noboru Kitamura, Hiroshi Masuhara

*Corresponding author for this work

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

Picosecond fluorescence dynamics of triphenylmethane dyes bonded to polyacrylamide gels before and after swelling was studied by a single-photon timing technique. Microviscosity in the gels after swelling was estimated to be 10-11 cP by examining the viscosity dependence of fluorescence dynamics of malachite green in various alcohols. The results were interpreted in terms of structured stiff water in a microcavity of the gels.

Original languageEnglish
Pages (from-to)398-403
Number of pages6
JournalChemical Physics Letters
Volume184
Issue number5-6
DOIs
StatePublished - 4 Oct 1991

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