Adsorption of human serum albumin onto polypyrrole powder and polypyrrole-silica nanocomposites

被引:25
作者
Azioune, A
Pech, K
Saoudi, B
Chehimi, MM
McCarthy, GP
Armes, SP
机构
[1] Univ Paris 07, Inst Topol & Dynam Syst, CNRS, UPRESA 7086, F-75005 Paris, France
[2] Univ Sussex, Sch Chem Phys & Environm Sci, Brighton BN1 9QJ, E Sussex, England
关键词
D O I
10.1016/S0379-6779(98)00982-5
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Adsorption of human serum albumin (HSA) onto polypyrrole powder and polypyrrole-silica nanocomposite is investigated at pH 7.4 and RT using UV spectroscopy. the nanocomposite is more effective than the powder in adsorbing HSA (147 and 63 mg/g, respectively). XPS was used to detect characteristic features of the adsorbed HSA and to construct adsorption isotherms. These latter were in fair agreement with those obtained via UV. Polypyrrole-silica is adsorptive towards HSA at pH 7.4 by contrast with the quasi-zero adsorption previously obtained with the DNA adsorbate (Saoudi et al, 3. Colloid Interface Sci. 1997).
引用
收藏
页码:1419 / 1420
页数:2
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