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A new phosphorescent chemosensor bearing Zn-DPA sites for H2PO4-
- Authors
- Kim, Hye-bin; Liu, Yifan; Nam, Dayoung; Li, Yinan; Park, Sungnam; Yoon, Juyoung; Hyun, Myung Ho
- Issue Date
- Jul-2014
- Publisher
- ELSEVIER SCI LTD
- Keywords
- Phosphorescence chemosensor; Anion recognition; Dihydrogen phosphate sensing; Phosphate sensor; Iridium complex; Zinc complex
- Citation
- DYES AND PIGMENTS, v.106, pp.20 - 24
- Indexed
- SCIE
SCOPUS
- Journal Title
- DYES AND PIGMENTS
- Volume
- 106
- Start Page
- 20
- End Page
- 24
- ISSN
- 0143-7208
- Abstract
- 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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Related Researcher
- Park, Sung nam
- College of Science (Department of Chemistry)