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Solubility of dense CO2 in two biocompatible acrylate copolymers
Duarte,A. R. C.; Sousa,A. R. Sampaio de; Sousa,H. C. de; Gil,M. H.M.; Jespersen,H. T.; Duarte,C. M.M.Biocompatible polymers and copolymers are frequently being used as part of controlled delivery systems. These systems can be prepared using a "clean and environment friendly" technology like supercritical fluids. One great advantage of this process is that compressed carbon dioxide has excellent plasticizing properties and can swell most biocompatible polymeric matrixes, thus promoting drug impregnation process...
Macrocyclic and polymeric lanthanide chelates: from physico-chemical studies to...
Duarte, M. G.; Prata, M. I. M.; Gil, M. H. M.; Geraldes, C. F. G. C.The improvement of commonly used Gd3+-based MRI contrast agents requires the design of new chelates with optimised in vivo efficacy, pharmacokinetic properties and specificity. The molecular parameters determining the nuclear relaxivity of the cationic chelate [Gd(DO2A)]+, as well as of some copolymers of [Gd(DTPA)]2- with diamines, were obtained using spectroscopic techniques. In both cases, the resulting too ...
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