Novel Turn-On Fluorescent Sensors with Mega Stokes Shifts for Dual Detection of Al3+ and Zn2+

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• 作者：Kanokthorn Boonkitpatarakul ; Junfeng Wang ; Nakorn Niamnont ; Bin Liu ; Lucas Mcdonald ; Yi Pang ; Mongkol Sukwattanasinitt
• 刊名：ACS Sensor
• 出版年：2016
• 出版时间：February 26, 2016
• 年：2016
• 卷：1
• 期：2
• 页码：144-150
• 全文大小：622K
• ISSN：2379-3694

文摘

A series of bishydrazide compounds have been developed for selective turn-on detection of Al³⁺ cation, based on metal chelation-enhanced fluorescence (CHEF) effects that inhibit the nonradiative PET and ESIPT processes. In aqueous solution, Al³⁺ selectively induces strong fluorescence of these compounds with large Stokes shifts up to ∼133 nm and emission colors varying from blue to orange. In the solid phase, both Al³⁺ and Zn²⁺ give apparent fluorescence which is simultaneously detected based on chromatographic separation.