An Inclusion Complex of Squaraine/β-CD for Selective Cyanide Determination

doi:10.7517/j.issn.1674-0475.2005.06.401

Imaging Science and Photochemistry ›› 2005, Vol. 23 ›› Issue (6): 401-406.DOI: 10.7517/j.issn.1674-0475.2005.06.401

An Inclusion Complex of Squaraine/β-CD for Selective Cyanide Determination

LI Chao, WANG Wei-bo, WANG Xue-song, ZHANG Bao-wen, CAO Yi

Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100101, P. R. China

Received:2005-05-16 Revised:2005-05-30 Online:2005-11-23 Published:2005-11-23

Abstract

Abstract: Upon encapsulation in β-cyclodextrines(CDs),the solubility of the squaraine(SQ) in water was significantly altered.The "two arms" of the SQ were embedded in the cavities of two separate β-CDs,and the central four-member ring was left outside the cavities.The intense and sharp absorption of squaraines in the near IR and their highly selective decoloration induced by cyanide makes them suitable to serve as cyanide sensors.The inclusion ability of β-CD makes water-insoluble SQ applicable as molecular sensors of cyanide in water directly without chemical modification.

Key words: squaraine SQ, inclusion complex of β-CDs, cyanide

CLC Number:

LI Chao, WANG Wei-bo, WANG Xue-song, ZHANG Bao-wen, CAO Yi. An Inclusion Complex of Squaraine/β-CD for Selective Cyanide Determination[J]. Imaging Science and Photochemistry, 2005, 23(6): 401-406.

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An Inclusion Complex of Squaraine/β-CD for Selective Cyanide Determination

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