New silica-gel-bound polyazacycloalkanes and characterization of their copper(II) complexes using electron spin resonance spectroscopy

Comparison of the binding behavior of several histidine-containing proteins with immobilized copper(II) complexes of 1,4,7-triazacyclononane and 1,4-bis(1,4,7-triazacyclononan-1-yl)butane

“…1:1 have been previously reported for Cu 2+ -loaded to IDA-functionalized agarose supports, the Cu 2+ loadings of ca. 70% observed in this study are consistent with other data [15][16][17] described for various support materials incorporating immobilized ligands comprising either solely N-donors or alternatively N-donors combined with ether O-donors. This dependence of metal-ion uptake with these immobilized systems has been attributed to differential steric effects associated with the three-dimensional network of the polymer support [16,17].…”

Coordination Chemistry in the Solid: Study of the Incorporation of CuII into Cyclam-Containing Hybrid Materials

“…[17] The calibration was done with Cu II -cyclam complexes diluted to different concentrations (0.2 ± 1 mmol g À1 ) into silica. [17] The calibration was done with Cu II -cyclam complexes diluted to different concentrations (0.2 ± 1 mmol g À1 ) into silica.…”

Synthesis of Macropolycyclic Ligands Based on Tetraazacycloalkanes

“…Moreover, polyazacycloalkanes cycles [38] [46] have shown the influence of the cavity size on the selectivity for coordination of alkselectively complex metal ions in solution [12] [13] [14] [15] [16] [17] or in the solid state [18] [19] [20] [21] , exhibit host-guest interac-ali, alkaline earth, and ammonium ions when such systems are used as selective receptors. Thus, they are an important tions [22] and DNA cleavage properties [23] [24] [25] , and find application in medicine as contrast-enhancing agents in class of molecules in coordination and host-guest chemistry, with the coordination properties depending upon the design magnetic resonance imaging (MRI) [22] [26] [27] .…”