Journal
JOURNAL OF PHYSICAL CHEMISTRY C
Volume 113, Issue 36, Pages 15838-15844Publisher
AMER CHEMICAL SOC
DOI: 10.1021/jp902904n
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Funding
- RFBR [08-03-91106-CRDF]
- CRDF [RUC1-2910-KA-07]
- Ministry of Science and Education of Russian Federation [REC-007]
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The ability of p-tert-butyl thiacalix[4]arenes tetrasubstituted at the lower rim by morpholide and pyrrolidide groups in cone, partial cone, and 1,3-alternate conformations to recognize cations of p- (Al3+, Pb2+) and d-(Fe3+, Co3+, Ni2+, Cu2+, Cd2+, Hg2+) elements has been studied by the picrate extraction method, dynamic light scattering (DLS), and atomic force microscopy (AFM). The hydrodynamic diameters of supramolecular associates, polydispersity index of host-guest systems, and molecular weight of nanoscale aggregates consisting of p-tert-butyl thiacalix[4]arenes and metal nitrates have been determined by the correlation spectroscopy method. It was shown that the investigated macrocycles are effective extractants for metal cations. All the investigated thiacalix[4]arenes are able to form dimers of about 1 nm with metal cations and nanoscale particles of 238 and 212 nm with Ni2+ and Pb2+ cations, respectively.
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