Abstract
A new ratiometric fluorescent probe for fluoride ions was developed which complexed fluoride by a tridentate receptor of boronic acid and imidazolium. In the current study, a tridentate receptor 1 with one ortho boronic acid and two imidazolium groups was designed. The boron center can co-operate with imidazolium to bind F-. The formation of B-F complex stabilizes the interaction between fluoride and imidazolium which induces a ratiometric fluorescence response. With the addition of F-, a strongly increased fluorescent emission centered at 370 nm appears at the expense of the fluorescent emission centered at 445 nm.
Original language | English |
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Pages (from-to) | 2755-2758 |
Number of pages | 4 |
Journal | Tetrahedron Letters |
Volume | 54 |
Issue number | 22 |
DOIs | |
State | Published - 29 May 2013 |
Bibliographical note
Funding Information:This work was supported by the Converging Research Center Program through the Ministry of Education, Science and Technology ( 2012K001512 ). This work was also supported by the Ewha Global Top 5 Grant 2011 of the Ewha Womans University . Z.X. thanks the Dalian Institute of Chemical Physics, Chinese Academy of Sciences for financial support of this work.
Keywords
- Boronic acid
- Fluorescent probe
- Fluoride sensing
- Imidazolium
- Ratiometric sensor