Anomaly in rotational diffusion of photophysical probe near volume phase transition of copoly(acrylamide-acrylic acid) gels: Steady state and time-resolved fluorescence study

Masahiko Annaka, Hiroyuki Takagi, Takayuki Nakahira

研究成果: Contribution to journalArticle査読

2 被引用数 (Scopus)

抄録

Changes in the microenvironment of pyrene-labeled copoly(acrylamide-acrylic acid) gels are investigated by means of fluorescence spectroscopy. An anomaly in the microscopic motion of a pyrenyl probe was observed in the vicinity of the phase transition: the average lifetime of monomer emission approached zero, and the rotational diffusion constant of pyrenyl probe became infinite. Density fluctuation and the nonequilibrium situation near the phase transition are considered to cause the rapid microscopic fluctuation of the network and solvent molecule.

本文言語英語
ページ(範囲)L1439-L1442
ジャーナルJapanese Journal of Applied Physics, Part 2: Letters
38
12 A
DOI
出版ステータス出版済み - 1999
外部発表はい

All Science Journal Classification (ASJC) codes

  • 工学(全般)
  • 物理学および天文学(その他)
  • 物理学および天文学(全般)

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