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Stability of core/shell quantum dots-role of pH and small organic ligands
Domingos, R. F.; Franco, C.; Pinheiro, J. P.The improvement of knowledge about the toxicity and even processability, and stability of quantum dots (QD) requires the understanding of the relationship between the QD binding head group, surface structure, and interligand interaction. The scanned stripping chronopotentiometry and absence of gradients and Nernstian equilibrium stripping techniques were used to determine the concentration of Cd dissolved from ...
Metal speciation dynamics in colloidal ligand dispersions. Part 3: Lability fea...
Pinheiro, J. P.; Domingos, R. F.; Minor, M.; Van Leeuwen, H. P.A lability criterion is developed for dynamic metal binding by colloidal ligands with convective diffusion as the dominant mode of mass transport. Scanned stripping chronopotentiometric measurements of Pb(II) and Cd(II) binding by carboxylated latex core-shell particles were in good agreement with the predicted values. The dynamic features of metal ion binding by these particles illustrate that the conventional...
Trace metal speciation using thin layer techniques and stripping chronopotentio...
Domingos, R. F.Tese dout., Química, Universidade do Algarve, 2006 ; Foi desenvolvido um critério de labilidade para a interacção de metais vestigiários com dispersões coloidais, e foi testado com sucesso para a especiação dinâmica de metais vestigiários usando a cronopotenciometria de redissolução anódica com variação do potencial de deposição (SSCP). A habilidade da SSCP para determinar o coeficiente de difusão de complexos...
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