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Recognition of Different Metal Cations by a trans ‐4‐[4‐(Dimethylamino)styryl]‐1‐methylpyridinium Iodide@Tetramethylcucurbit[6]uril Probe
Author(s) -
Deng Xin Yu,
Chen Kai,
Chen MingDong,
Lü Li Bin,
Tao Zhu
Publication year - 2019
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201801398
Subject(s) - chemistry , iodide , pyridinium , lanthanide , alkaline earth metal , alkali metal , metal , inorganic chemistry , fluorescence , supramolecular chemistry , viologen , aqueous solution , qualitative inorganic analysis , quenching (fluorescence) , salt (chemistry) , crystallography , ion , medicinal chemistry , organic chemistry , crystal structure , physics , quantum mechanics
Based on the study of a known host–guest inclusion complex comprising cucurbit[6]uril (Q[6]) and a hemicyanine dye, trans ‐4‐[4‐(dimethylamino)styryl]‐1‐pyridinium iodide ( t ‐DSMI), a water‐soluble symmetric tetramethylcucurbit[6]uril (TMeQ[6]), was selected to construct a t ‐DSMI‐based probe to test the response to various metal cations in neutral water. The experimental results revealed that the probe responded to Cs + cations in alkali metal systems, Ba 2+ and Sr 2+ cations in alkaline earth metal systems, Eu 3+ , Tm 3+ and Yb 3+ cations in lanthanide systems, and Cr 3+ , Fe 3+ and Hg 2+ cations in systems containing transition and other metal cations, via obvious fluorescence quenching.