NJC2016Yamato.pdf (595.04 kB)
Download fileA study of anion binding behaviour of 1,3-alternate thiacalix[4]arene-based receptors bearing urea moieties
journal contribution
posted on 2016-12-08, 13:46 authored by Shofiur Rahman, Hirotsugu Tomiyasu, Hiroto Kawazoe, Jiang-Lin Zhao, Hang Cong, Xin–Long Ni, Xi Zeng, Mark ElsegoodMark Elsegood, Thomas G. Warwick, Simon J. Teat, Carl Redshaw, P.E. Georghiou, Takehiko YamatoThree novel thiacalix[4]arene receptors 4a-c each with a 1,3-alternate conformation and possessing two urea moieties linking various phenyl groups substituted with either para electron-donating or -withdrawing groups have been synthesized. The binding properties of these receptors were investigated by means of 1H NMR spectroscopy and UV-vis absorption titration experiments using various anions. The structures and complexation energies were also studied by density functional theory (DFT) methods. The results suggested that receptor 4c, which possesses two p-(trifluoromethyl)phenyl ureido moieties, can complex most efficiently in the urea cavity and exhibits high selectivity towards F- and AcO- ions.
Funding
OTEC at Saga University and the International Cooperation Projects of Guizhou Province (No. 20137005). CR thanks the EPSRC for a travel grant.
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