Issue 3, 2012

Development of a borondipyrromethene-based Zn2+fluorescent probe: solvent effects on modulation sensing ability

Abstract

A borondipyrromethene-based Zn2+ fluorescent probe BODPAQ was designed and synthesized. The chelators in BODPAQ, 2,2′-dipicolylamine (DPA) and 8-aminoquinoline (AQ), coordinate to Zn2+ in a synergic manner. As a result, BODPAQ displays high Zn2+ selectivity with a dramatic enhanced emission accompanied by a notable hypsochromic shift due to the binary inhibition effect of PET and ICT mechanisms, enabling the detection of Zn2+ by both ratiometric and normal turn-on fluorescence methods in acetonitrile. Interestingly, the sensitivity of BODPAQ towards Zn2+ changes upon varying the compositions of buffer solutions. In 3-morpholinopropanesulfonic acid (MOPS) buffer aqueous solution (50% CH3CN), BODPAQ displays the highest sensitivity for Zn2+, while in citrate–phosphate buffer, BODPAQ shows no response to Zn2+.

Graphical abstract: Development of a borondipyrromethene-based Zn2+ fluorescent probe: solvent effects on modulation sensing ability

Supplementary files

Article information

Article type
Paper
Submitted
29 Apr 2011
Accepted
03 Oct 2011
First published
17 Nov 2011

Dalton Trans., 2012,41, 831-838

Development of a borondipyrromethene-based Zn2+ fluorescent probe: solvent effects on modulation sensing ability

C. Zhao, Y. Zhang, P. Feng and J. Cao, Dalton Trans., 2012, 41, 831 DOI: 10.1039/C1DT10797F

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