Redox driven swelling of layer-by-layer enzyme-polyelectrolyte multilayers

被引：41
|
作者：
Forzani, ES
Pérez, MA
Teijelo, ML
Calvo, EJ
机构：
[1] Fac Ciencias Exactas & Nat Buenos Aires, INQUIMAE, Dept Quim Inorgan Anal & Quim Fis, RA-1428 Buenos Aires, DF, Argentina
[2] Univ Nacl Cordoba, Fac Ciencias Quim, Dept Fisicoquim, INFIQC, RA-5000 Cordoba, Argentina
来源：
LANGMUIR | 2002年 / 18卷 / 25期
关键词：
D O I：
10.1021/la0264419
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Ellipsometric parameters of layer-by-layer self-assembled osmium complex-derivatized poly(allylamine) and glucose oxidase multilayers, (PAH-Os)(n)(GOX)(n), were measured at different wavelengths during oxidation-reduction cycles. Data were analyzed using an isotropic single layer model for the enzyme films. The changes in film thickness and refractive index during cyclic voltammetry and potential square wave experiments arise from redox modulation causing film swelling due to the exchange of anions and solvent with the bathing electrolyte. These changes correlate well with the fraction of oxidized PAH-Os(III) in the film.
引用
收藏
页码：9867 / 9873
页数：7
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