Normal photochromism of spiropyran in montmorillonite interlayer

Naoki Saso, Takashi Yamamoto, Yasushi Umemura, Yasuaki Einaga

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Spiropyran-montmorillonite hybrid materials have been fabricated by the Langmuir-Blodgett (LB) and an intercalation method. The LB method using clay minerals could be applied to fabricate hybrid ultrathin films consisting of a non-amphiphilic spiropyran. It is confirmed that hybrid LB films possess the layered structure and exhibit "normal photochromism" without any changes in the layered structure. In case of the intercalation method, hybrid compounds also possess the layered structure. Interestingly, intercalation hybrid compounds exhibit "reverse photochromism". It is suggested that a different process in formation of the layered structure influences the observed photochromism.

Original languageEnglish
Pages (from-to)309-315
Number of pages7
JournalColloids and Surfaces A: Physicochemical and Engineering Aspects
Volume317
Issue number1-3
DOIs
Publication statusPublished - 2008 Mar 20

Fingerprint

Photochromism
Bentonite
photochromism
montmorillonite
Intercalation
Clay minerals
intercalation
interlayers
Ultrathin films
Langmuir Blodgett films
Hybrid materials
Langmuir-Blodgett films
clays
minerals
spiropyran

Keywords

  • Clay mineral
  • Intercalation method
  • Langmuir-Blodgett method
  • Photochromism
  • Spiropyran

ASJC Scopus subject areas

  • Colloid and Surface Chemistry
  • Physical and Theoretical Chemistry

Cite this

Normal photochromism of spiropyran in montmorillonite interlayer. / Saso, Naoki; Yamamoto, Takashi; Umemura, Yasushi; Einaga, Yasuaki.

In: Colloids and Surfaces A: Physicochemical and Engineering Aspects, Vol. 317, No. 1-3, 20.03.2008, p. 309-315.

Research output: Contribution to journalArticle

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