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A new schiff-base receptor L based on naphthalimide had been investigated as a selective and sensitive chemosensor for Al 3+ in CH 3 OH. Upon addition of Al 3+ , 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 -Al 3+ complex was formed with an association constant of 1.62×10 4 M −1 , and the limit of detection for Al 3+ was determined as 7.4 nM. In addition, the potential utility of L in sensing Al 3+ was also examined in real water samples. [ABSTRACT FROM AUTHOR]

A novel quinoline-based fluorescent chemosensor L was synthesized and characterized by 1 H NMR, 13 C NMR, HRMS and X-ray Crystallography. L showed a significant fluorescent enhancement (120-fold) and color change upon the addition of Zn 2+ attributed to the joint contribution of the PET and CHEF processes. The binding ratio of the L –Zn 2+ complex was 1:1 confirmed by the 1 HNMR, mass-spectral analysis and Job plot, and the detection limit for Zn 2+ was as low as 5.2 × 10 −7 M. L was successfully applied to the determination of Zn 2+ in real water samples. Moreover, the fluorescent signals of L were utilized to built an INHIBIT logic gate. [ABSTRACT FROM AUTHOR]

A new chemosensor L based on the naphthalimide moiety was synthesized and characterized. L exhibited the high selectivity and sensitivity for Al 3 + in CH 3 OH, along with colorimetric and fluorometric dual-signaling responses based on the joint contribution of the ICT and CHEF processes. A 1:1 stoichiometry for the L -Al 3 + complex was formed with an association constant of 7.6 × 10 4 M − 1 , and the limit of detection for Al 3 + was determined as 6.9 μM. In addition, L was successfully applied to the determination of Al 3 + in real water samples. [ABSTRACT FROM AUTHOR]