期刊
JOURNAL OF PHYSICAL CHEMISTRY B
卷 119, 期 31, 页码 10052-10059出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcb.5b04115
关键词
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资金
- NSERC
- CRC
- CFI
- OIT
- National Natural Science Foundation of China [51172260, 51302294]
- Science and Technology Commission of Shanghai [11 nm0506600, 12ZR1452100]
Mesoporous spheres of Calciutri silicate hydrate (MS-CSH) have been prepared by an ulttasonie method. Following an earlier work in which we have revealed the interactions between ibuprofen (IBU) :and CSH carriers with different morphologies by X-ray absorption neat edge structures (XANES) analysis. In the present investigation, two new drug Molecules, alendronate sodium (ALN) and gentamicin Sulfate (GS), were incorporated into MS-CSH, and their drug loading capacities (DLCs) weremeasured using thermogravimetric analysis to establish the relatiOnshiP between drug-carrier interactions' and PLCs. The XANES spectra clearly indicate that acidic functional groups of the drug molecules linked to the active sites (Ca-OH and Si-OH groups) of MS-CSH on the surface by electrostatic interactions. In addition, it is found that the stoichioinetric ratio of Ca2+ ions of CSH carriers and the functional groups of drug molecules may significantly influence the DLCs.
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