Crystal engineering approach to design colorimetric indicator array to discriminate positional isomers of aromatic organic molecules

Darshak R. Trivedi, Yuzo Fujiki, Norifumi Fujita, Seiji Shinkai, Kazuki Sada

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

A 2D colorimetric indicator array to discriminate isomers of dihydroxynaphthalene has been designed by using a crystal engineering concept combined with solid-state co-grinding and charge-transfer complexation. The N⋯H-O supramolecular synthon between the pyridyl N atom of the probe and hydroxy group of the analyte has been observed in all reported single-crystal X-ray structures of resultant CT complexes. Solid-state co-grinding with aromatic solids easily provided the highly concentrated solvent-free conditions required to promote the formation of charge-transfer complexes with brighter color changes. Probe D (N,N′-bis-(4-pyridyl)pyromellitic diimide) showed an excellent ability to discriminate eight isomers of dihydroxynaphthalene with a wide variety of colors of the resultant CT complexes.

Original languageEnglish
Pages (from-to)254-261
Number of pages8
JournalChemistry - An Asian Journal
Volume4
Issue number2
DOIs
Publication statusPublished - Feb 2 2009

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Organic Chemistry

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