Department of Chemistry and Interdisciplinary Program of Integrated Biotechnology, Sogang University, Seoul 121-742, Republic of Korea.
Chemphyschem. 2013 Jul 22;14(10):2232-6. doi: 10.1002/cphc.201300169. Epub 2013 May 14.
A new family of chitosan-cross-linked osmium polymer composites was prepared and its electrochemical properties were examined. The composites were prepared by quaternization of the poly(4-vinylpyridine) osmium bipyridyl polymer (PVP-Os) which was then cross-linked with chitosan, yielding PVP-Os/chitosan. Films made of the composites showed improved mass and electron transport owing to the porous and hydrophilic structure which is derived from the cross-links between the Os polymer and chitosan. The rate for glucose oxidation was enhanced four times when glucose oxidase (GOx) was immobilized on PVP-Os/chitosan compared immobilization on PVP-Os.
制备了一种新型壳聚糖交联锇聚合物复合材料，并对其电化学性能进行了研究。该复合材料是通过聚(4-乙烯基吡啶)双吡啶锇聚合物(PVP-Os)的季铵化反应，然后与壳聚糖交联得到的，得到 PVP-Os/壳聚糖。由于 Os 聚合物与壳聚糖之间的交联形成了多孔和亲水结构，因此由复合材料制成的薄膜在质量和电子传递方面得到了改善。与固定在 PVP-Os 上相比，将葡萄糖氧化酶(GOx)固定在 PVP-Os/壳聚糖上时，葡萄糖氧化速率提高了四倍。
