A new phosphorescent chemosensor bearing Zn-DPA sites for H2PO4
- 주제(키워드) Phosphorescence chemosensor , Anion recognition , Dihydrogen phosphate sensing , Phosphate sensor , Iridium complex , Zinc complex
- 등재 SCIE, SCOPUS
- 발행기관 ELSEVIER SCI LTD
- 발행년도 2014
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000091342
- 본문언어 영어
- Published As http://dx.doi.org/10.1016/j.dyepig.2014.02.015
초록/요약
A phosphorescence chemosensor bearing an iridium (III) complex as a communicating source and two Zn-DPA units acting as a preorganized binding site for H2PO4- is presented. The phosphorescent chemosensor displayed a selective phosphorescence enhancement with H2PO4- in aqueous solution and at neutral pH. On the other hand, F-, Cl-, Br-, I-, NO3-, CH3COO-, and ClO4- did not induce significant changes in phosphorescence. Furthermore, the phosphorescent chemosensor shows selectivity for H2PO4- over the related phosphate species, such as ATP and pyrophosphate. In addition, there was a distinct lifetime change only for H2PO4-. The association constant was calculated to be 9.68 x 10(4) M-1 for H2PO4-. (C) 2014 Elsevier Ltd. All rights reserved.
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