A FRET fluorescent chemosensor SPAQ for Zn based on a dyad bearing spiropyran and 8-aminoquinoline unit |
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| Authors: | Jian-Fa Zhu Albert WM Lee |
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| Institution: | Department of Chemistry, Hong Kong Baptist University, Kowloon Tong, Hong Kong SAR, China |
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| Abstract: | A novel FRET fluorescent sensor SPAQ containing 8-aminoquinoline (donor) and spiropyran derivative (acceptor) was designed and synthesized for detecting Zn2+. The probe successfully exhibited a fluorescence turn on and ratiometric response for Zn2+ in ethanol solution with high selectivity. Upon excitation at 370 nm, the modulation of the emission intensity of SPAQ at 645 and 470 nm was achieved in the presence of Zn2+ by fluorescent resonance energy transfer (FRET) and chelation-enhanced fluorescence (CHEF) effects. |
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