期刊
ORGANIC & BIOMOLECULAR CHEMISTRY
卷 12, 期 14, 页码 2302-2309出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ob42200c
关键词
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资金
- Department of Science and Technology (DST), Government of India [SR/FT/CS-97/2010(G)]
- DST
Two new tripodal receptors (1-2) have been synthesized and characterized by various spectroscopic techniques. The nano-aggregates of 1 and 2 (N1 and N2) have been prepared by a re-precipitation method in aqueous medium and have shown different photo-physical properties. Nano-aggregates of 1 (N1) can selectively recognize Hg2+ in aqueous medium in the presence of other metal ions with enhancement in fluorescent intensity. The response was linearly proportional to the concentration of Hg2+ in the range 0-10 mu M with a detection limit of 2.4 nM. The mechanism of selective binding of Hg2+ by N1 has also been supported by theoretical studies. To the best of our knowledge, this work represents the first report on substituted thiourea based nano-aggregates for nano-molar detection of mercury in aqueous medium.
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