A schiff-base receptor based naphthalimide derivative: Highly selective and colorimetric fluorescent turn-on sensor for Al3+

A new schiff-base receptor L based on naphthalimide had been investigated as a selective and sensitive chemosensor for Al3+ in CH3OH. Upon addition of Al3+, L showed a 39-fold enhancement at 508 nm with colorimetric and fluorometric dual-signaling response which might be induced by the integration of ICT and CHEF. A 1:1 stoichiometry for the L-Al3+ complex was formed with an association constant of 1.62 x 10(4) M-1, and the limit of detection for Al3+ was determined as 7.4 nM. In addition, the potential utility of L in sensing Al3+ was also examined in real water samples. (C) 2017 Elsevier B.V. All rights reserved.