Tetrahedron Letters

Highly selective colorimetric fluorescence sensor for Cu 2+: cation-induced 'switching on'of fluorescence due to excited state internal charge transfer in the red/near- …

S Goswami, D Sen, NK Das, G Hazra

Index: Goswami, Shyamaprosad; Sen, Debabrata; Das, Nirmal Kumar; Hazra, Giridhari Tetrahedron Letters, 2010 , vol. 51, # 42 p. 5563 - 5566

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Citation Number: 43

Abstract

A 1, 8-naphthalimide-based colorimetric fluorescence perinone dye, receptor 1 is reported herein for the selective detection of Cu2+ over the other heavy and transition metal ions. Receptor 1 shows a strong colorimetric change from orange to purple and a dramatic enhancement of fluorescence intensity due to cation-induced excited state internal charge transfer during the sensing event, that is, a dual optical response that would facilitate ...