(Thia)calix[4]arene–porphyrin conjugates: novel receptors for fullerene complexation with C<sub>70</sub>over C<sub>60</sub>selectivity
作者:Miroslav Dudič、Pavel Lhoták、Ivan Stibor、Hana Petříčková、Kamil Lang
DOI:10.1039/b307988k
日期:——
from two and/or four porphyrin units. These molecules form stable complexes with fullerenes in a toluene solution and exhibit selectivity towards C70. The observed fullerene–porphyrin contacts suggest cooperative behaviour of closely separated porphyrin units attracting C60 or C70. Measurements show efficient quenching of porphyrin fluorescence emission.
Polymeric calixarenes. Synthesis, polymerisation and Na+ complexation of a calix[4]arene methacrylate
作者:Stephen J. Harris、Geraldine Barrett、M. Anthony McKervey
DOI:10.1039/c39910001224
日期:——
A calix[4]arene methacrylate has been prepared from p-tert-butylcalix[4]arene and polymerised under free radical conditions: both monomer and polymer form stable complexes with sodium thiocyanate.
Novel chromogenic ligands for lithium and sodium based on calix[4]arene tetraesters
作者:Mary McCarrick、Bei Wu、Steven J. Harris、Dermot Diamond、Geraldine Barrett、M. Anthony McKervey
DOI:10.1039/c39920001287
日期:——
Two new chromogenic calix[4]arene tetraesters bearing nitrophenol residues display a striking cation-selective shift in absorbance maximum from the ultraviolet to the visible region in the presence of base upon addition of lithium ion or, to a lesser extent, sodium ion; the metal salt causes a change from colourless to yellow, the colour density being concentration dependent.