Tetrahedron

Squaraine-based colorimetric and fluorescent sensors for Cu 2+-specific detection and fluorescence imaging in living cells

W Wang, A Fu, J You, G Gao, J Lan, L Chen

Index: Wang, Weida; Fu, Afu; You, Jingsong; Gao, Ge; Lan, Jingbo; Chen, Lijuan Tetrahedron, 2010 , vol. 66, # 21 p. 3695 - 3701

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Citation Number: 48

Abstract

New squaraine-based chemosensors SQ1 and SQ2 functionalized with 2-picolyl units were first synthesized and used as highly selective and sensitive colorimetric and fluorometric dual-channel sensors for Cu2+-specific recognition in aqueous systems. Among a series of individual metal ions, only Cu2+ could result in dramatic color changes. We also evaluated their capability of biological applications and found that SQ2 could be successfully ...