A Highly Selective and Sensitive Fluorescent Turn-Off Probe for Cu2+ Based on a Guanidine Derivative
AbstractA new highly selective and sensitive fluorescent probe for Cu2+, N-n-butyl-4-(1′-cyclooctene-1′,3′,6′-triazole)-1,8-naphthalimide (L), was synthesized and evaluated. The structure of compound L was characterized via IR, 1H-NMR, 13C-NMR and HRMS. The fluorescent probe was quenched by Cu2+ with a 1:1 binding ratio and behaved as a “turn-off” sensor. An efficient and sensitive spectrofluorometric method was developed for detecting and estimating trace levels of Cu2+ in EtOH/H2O. The ligand exhibited excitation and emission maxima at 447 and 518 nm, respectively. The equilibrium binding constant of the ligand with Cu2+ was 1.57 × 104 M−1, as calculated using the Stern View Full-Text
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Ye, F.; Chai, Q.; Liang, X.-M.; Li, M.-Q.; Wang, Z.-Q.; Fu, Y. A Highly Selective and Sensitive Fluorescent Turn-Off Probe for Cu2+ Based on a Guanidine Derivative. Molecules 2017, 22, 1741.
Ye F, Chai Q, Liang X-M, Li M-Q, Wang Z-Q, Fu Y. A Highly Selective and Sensitive Fluorescent Turn-Off Probe for Cu2+ Based on a Guanidine Derivative. Molecules. 2017; 22(10):1741.Chicago/Turabian Style
Ye, Fei; Chai, Qiong; Liang, Xiao-Min; Li, Ming-Qiang; Wang, Zhi-Qiang; Fu, Ying. 2017. "A Highly Selective and Sensitive Fluorescent Turn-Off Probe for Cu2+ Based on a Guanidine Derivative." Molecules 22, no. 10: 1741.
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