A novel histidine-functionalized 1,8-naphthalimide-based fluorescent chemosensor for the selective and sensitive detection of Hg2+ in water
| Autor: | Xiao-Peng Chen, Tai-Bao Wei, Hong Yao, You-Ming Zhang, Jun-Xia Su, Kai-Peng Zhong, Qi Lin |
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| Rok vydání: | 2017 |
| Předmět: |
inorganic chemicals
Detection limit Aqueous solution 010405 organic chemistry Stereochemistry Chemistry Metal ions in aqueous solution High selectivity General Chemistry 010402 general chemistry 01 natural sciences Combinatorial chemistry Fluorescence Catalysis 0104 chemical sciences Materials Chemistry Moiety Binding site Histidine |
| Zdroj: | New Journal of Chemistry. 41:3303-3307 |
| ISSN: | 1369-9261 1144-0546 |
| DOI: | 10.1039/c6nj03930h |
| Popis: | Hg2+ is one of the the most threatening heavy metal ions; thus, finding a quick and easy way to detect it is very important. In this study, we designed and synthesized a simple Hg2+ chemosensor Z, which bears carboxyl and imidazolyl moieties as the hydrophilic group site and Hg2+ binding site, whereas the naphthalimide moiety acts as the signal group. Interestingly, the sensor Z could dissolve in water and show high selectivity and sensitivity for Hg2+ in aqueous solution. Other coexistent competitive metal ions (Fe3+, Ag+, Ca2+, Cu2+, Co2+, Ni2+, Cd2+, Pb2+, Zn2+, Cr3+, and Mg2+) had no interference in the process of detecting Hg2+. The detection limit of sensor Z towards Hg2+ was 1.785 × 10−7 M, which indicated its high detection sensitivity. Moreover, the immediate response of Z to Hg2+ provides a real-time detection method for Hg2+ in aqueous solution. In addition, sensor Z can undergo cyclic utilization. |
| Databáze: | OpenAIRE |
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