Tetrahedron letters

Azobenzene coupled chromogenic receptors for the selective detection of copper (II) and its application as a chemosensor kit

SJ Lee, SS Lee, IY Jeong, JY Lee, JH Jung

Index: Lee, Soo Jin; Lee, Shim Sung; Jeong, Il Yun; Lee, Jin Yong; Jung, Jong Hwa Tetrahedron Letters, 2007 , vol. 48, # 3 p. 393 - 396

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Citation Number: 35

Abstract

Azobenzene-based receptors 1–4 as colorimetric sensing materials were synthesized and their sensing properties were examined. In solution, the proposed sensing materials give rise to a large cation-induced hypochromic shift for Cu2+ resulting in a change from red to pale-yellow, whereas no significant color change was observed upon addition of other selected metal ions. The use of the silica gel plate modified with immobilization of receptor ...