Bulletin of the Korean chemical society | |
Rhodamine B Hydrazide Revisited: Chemodosimetric Hg2+-selective Signaling Behavior in Aqueous Environments |
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Myung Gil Choi1  Suk-Kyu Chang1  Jae Hyun Noh1  Kyoung Nam Kim1  Sangdoo Ahn1  | |
关键词: Chemodosimeter; Hg2+-selectivity; Rhodamine; Fluorescence; | |
DOI : | |
学科分类:化学(综合) | |
来源: Korean Chemical Society | |
【 摘 要 】
The well-known Cu2+-selective chemodosimetric behavior of rhodamine B hydrazide was successfully switched to selectivity for Hg2+. The fluorescence signaling is remarkably selective toward Hg2+ ions compared to other common biologically and environmentally important metal ions, including Cu2+ ions. The detection limit was 0.2 レM in an acetate-buffered aqueous 10% methanol solution at pH 5. The OFF-ON type of signaling is due to the selective Hg2+-induced hydrolysis of the lactam ring of the hydrazide as has been reported for the standard Cu2+-signaling process of the same compound. A simple change in medium resulted in clear switching of selective signaling from Cu2+ to Hg2+, which extends the applicability of the easily accessible hydrazide derivative.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO201912010240896ZK.pdf | 379KB | download |