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Self-assembled fractal hybrid dendrites from water-soluble anionic (thia)calix[4] arenes and Ag |
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| Authors: | Luidmila S. Yakimova Leysan H. Gilmanova Vladimir G. Evtugyn Yuri N. Osin Ivan I. Stoikov |
| Affiliation: | 1.A. M. Butlerov Chemical Institute,Kazan Federal University,Kazan,Russian Federation;2.Organic Chemistry Department, Faculty of Science,RUDN University,Moscow,Russian Federation;3.Interdisciplinary Centre for Analytical Microscopy,Kazan Federal University,Kazan,Russian Federation |
| Abstract: | Novel water-soluble anionic p-tert-butylthiacalix[4]arene with propanesulfonate fragments has been synthesized. Alkylation of the lower rim of thiacalix[4]arene in the presence of NaH/THF led to cone conformation instead of the expected 1,3-alternate conformer due to metal template effect. The presence of supramolecular associates at the critical micelle concentration of 1.65 · 10?5 M were investigated in aqueous solutions by a combination of different techniques (DLS and conductivity). It was observed that the macrocyclic platform decreases the CMC by tenfold as compared with non-macrocycle analogs. A simple approach for the design of stable monodisperse Ag-based nanoaggregates (near 95 nm) containing ionic Ag and organic ligand–thiacalix[4]arene sulfo derivative in water has been developed. Self-assembled fractal hybrid nanodendrites consisting of water-soluble anionic (thia)calix[4]arenes and Ag+ have been obtained in a single step under mild conditions. Graphical abstract ? |
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