Bibliographic Details
| Title: |
Stoichiometry and equilibrium constant of the complex of PAMAM-NH2 G4 and 5-fluorouracil |
| Authors: |
Buczkowski, Adam buczkowski_adam@tlen.pl, Piekarski, Henryk, Palecz, Bartlomiej paleczb@uni.lodz.pl |
| Source: |
Journal of Molecular Liquids. Sep2012, Vol. 173, p8-12. 5p. |
| Subjects: |
Stoichiometry, Fluorouracil, Dendrimers, Oncology, Drugs, Equilibrium constant (Chemistry), Polyamidoamine dendrimers, Complex compounds |
| Abstract: |
Abstract: Polyamidoamine dendrimer (PAMAM-NH2 G4) complex with 5-fluorouracil, an oncological drug, was investigated by the technique of equilibrium dialysis at temperatures of 20°C and 45°C. The results obtained were worked out by means of the modified model of two sets of active sites proposed by Bobrovnik. Based on the analysis of the results obtained, it was calculated that at a temperature of 20°C the dendrimer molecule can bind about 12 molecules of the ligand with equilibrium constant K 1 ≅5600 and about 37 molecules with equilibrium constant K 2 ≅150. At a temperature of 45°C the number of the dendrimer binding sites is similar but the equilibrium constants of binding 5-fluorouracil with both sets of active sites are clearly lower (K 1 ≅1820, K 2 ≅70). The saturation of both the sets of active sites is of an exothermic character. [Copyright &y& Elsevier] |
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| Database: |
Engineering Source |
