Preferential solvation studied by the fluorescence lifetime of acridine in water-alcohol mixtures

Osamu Ito, Eiko Ito, Yuko Yoshikawa, Akira Watanabe, Hiroshi Kokubun

研究成果: Article査読

14 被引用数 (Scopus)

抄録

Fluorescence lifetimes (τF) of acridine have been measured in water-alcohol solvent mixtures at room temperature. The τF of acridine in pure water (11.5 ± 0.1 ns) was drastically decreased upon the addition of small amounts of alcohol; i.e. τF = 1.2 ± 0.01 ns in 0.5 mole fraction of ethanol in water and τF = 0.4 ± 0.01 ns in pure ethanol. The extent of the decrease in τF becomes more evident in the following order: methanol < ethanol < propan-1-ol. This is the order of increasing hydrophobic interaction between alcohols and acridine, suggesting that alcohol molecules preferentially solvate acridine in water. Such an observation has been discussed in terms of the degree of preferential solvation.

本文言語English
ページ(範囲)227-230
ページ数4
ジャーナルJournal of the Chemical Society - Faraday Transactions
92
2
DOI
出版ステータスPublished - 1996 1 21

ASJC Scopus subject areas

  • 物理化学および理論化学

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