Quinoline based fluorescence sensor (1) was synthesized and characterized with mass spectra (MS), ((1))H nuclear magnetic resonance (((1))H NMR) spectrometer, elemental analyses, and infrared (IR) spectra. Following fluorescence experiments demonstrate 1 can coordinate with copper ions, and lead to fluorescence completely quenched. The 1-copper complex was used as a "turn-on" fluorescence biosensor to convenient and highly effective detect nitric oxide (NO) over other radicals in solution and PCL-based thin film. The finding would enable the quinoline based fluorescence probe to be an "off-on" convenient NO fluorescence probe.
Keywords: Copper complex; Fluorescence probe; Nitric oxide; Quinoline.
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