PH-induced interconversion between J-aggregates and H-aggregates of 5,10,15,20-Tetrakis(4-sulfonatophenyl)porphyrin in polyelectrolyte multilayer films

Yuya Egawa, Ryosuke Hayashida, Jun Ichi Anzai

研究成果: Article査読

81 被引用数 (Scopus)

抄録

We fabricated a layer-by-layer (LbL) film composed of 5,10,15,20- tetrakis(4-sulfonatophenyl)porphyrin (TPPS) and poly(allylamine) (PAA) and investigated its pH response by UV-visible spectrometry. When the (PAA/TPPS)5PAA film was immersed in a pH 1.5 solution, J-aggregate bands were observed at 484 and 691 nm. Above pH 3.0, the J-aggregates were completely dissociated and an H-aggregate band was observed at 405 nm. The interconversion between the J-aggregates and H-aggregates in the LbL film was repeatable and controllable by changing the pH of the solutions.

本文言語English
ページ(範囲)13146-13150
ページ数5
ジャーナルLangmuir
23
26
DOI
出版ステータスPublished - 2007 12 18

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 表面および界面
  • 分光学
  • 電気化学

フィンガープリント

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