期刊
MICROCHEMICAL JOURNAL
卷 158, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.microc.2020.105166
关键词
Iridium complex; HCO3- and CO(3)(2-)recognition; High sensitivity; Test strip
资金
- National Natural Science Foundation of China [21861017, 41867053]
- key project of Natural Science Foundation of Jiangxi Province [20192ACBL20011]
A novel cyclometalated iridium(III) complex-based luminescent probe Ir-1 for HCO3- and CO32- detection has been synthesized and characterized. The probe displayed no fluorescence around 600 nm, while a more than 10-fold enhancement in fluorescence emission intensity was observed after the addition of HCO3- or CO32- owing to the carbonate or bicarbonate combination with the hydroxyl group on the probe Ir-1 to form a hydrogen bond. Such luminescent probe worked excellently in tetrahydrofuran with a quick response time (< 20 s) and the detection limits for CO32- and HCO3- were as low as 3.95 x 10(-8) mol L-1- and 1.51 x 10(-7) mol L-1 respectively. In addition, to facilitate the visual application process, a test strip coated with a fluorescent probe Ir-1 was prepared and this probe could also be used to detect HCO3- and Co-3(2-) in actual samples with high accuracy.
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