Rapid colorimetric sensing of cyanide anion in aqueous media with a spiropyran derivative containing a dinitrophenolate moiety

Y Shiraishi, M Itoh, T Hirai

Index: Shiraishi, Yasuhiro; Itoh, Masataka; Hirai, Takayuki Tetrahedron Letters, 2011 , vol. 52, # 13 p. 1515 - 1519

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Citation Number: 28

Abstract

A spiropyran derivative containing a dinitrophenolate moiety (2: 1′, 3′, 3′-trimethyl-6, 8- dinitro-spiro-[2H-1-benzopyran-2, 2′-indoline]) behaves as a receptor for selective detection of cyanide anion (CN−) in aqueous media. Compound 2, when dissolved in aqueous media, spontaneously produces the spirocycle-opened merocyanine (MC) form even in dark condition. The absorption band of the MC form decreases selectively upon ...