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Issue 61, 2013
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Colorimetric visualization of acid–base equilibria in non-polar solvent†

Atsuomi Shundo,‡a   Shinsuke Ishihara,b   Jan Labuta,a   Yosuke Onuma,a   Hideki Sakai,c   Masahiko Abe,c   Katsuhiko Ariga*ad  and  Jonathan P. Hill*ad  
Author affiliations

* Corresponding authors

a WPI-Centre for Materials Nanoarchitectonics, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki, Japan
E-mail: Ariga.Katsuhiko@nims.go.jp, Jonathan.Hill@nims.go.jp
Tel: +81-29-860 4399

b International Centre for Young Scientists, National Institute for Materials Science, Namiki 1-1, Tsukuba, Ibaraki, Japan

c Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda 278-8510, Japan

d JST-CREST, Namiki 1-1, Tsukuba, Japan

Abstract

Visualization of an acid–base equilibrium in a non-polar solvent (dichloromethane), which may be extended to other solvents, is reported. It is based on an oxoporphyrinogen as a multichromic indicator of prevailing acidity in solution and presents up to six distinct hues depending on degree of protonation, tautomeric state or presence of a basic guest.

Graphical abstract: Colorimetric visualization of acid–base equilibria in non-polar solvent

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Publication details

The article was received on 18 Apr 2013, accepted on 17 Jun 2013 and first published on 17 Jun 2013


Article type: Communication
DOI: 10.1039/C3CC42859A
Chem. Commun., 2013,49, 6870-6872

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    Colorimetric visualization of acid–base equilibria in non-polar solvent

    A. Shundo, S. Ishihara, J. Labuta, Y. Onuma, H. Sakai, M. Abe, K. Ariga and J. P. Hill, Chem. Commun., 2013, 49, 6870
    DOI: 10.1039/C3CC42859A

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