Kim Yuna, Malliaras George G, Ober Christopher K, Kim Eunkyoung
Department of Chemical and Biomolecular Engineering, Yonsei University 262 Seongsanno, Seodaemun-gu, Seoul 120-749, Korea.
J Nanosci Nanotechnol. 2010 Oct;10(10):6869-73. doi: 10.1166/jnn.2010.2948.
An organically modified TiO2 nanocomposite was explored for glucose detection. Bis-Butyl viologen (BBV) was mixed with TiO2 nanoparticles to generate highly dispersed nanocomposite solution, which provided organically modified nanocomposite film of TiO2 (BBV-TiO2). A transistor type sensor was fabricated using the BBV-TiO2 film and platinum gate electrode. The BBV-TiO2 nanocomposite sensor showed higher sensitivity to glucose sensing in low concentration region compared to that of TiO2 sensor. This result was ascribed to facilitated electron transport by the adsorbed viologen molecules on TiO2 nanoparticles, where viologen molecules act as an electron transfer mediator between enzyme and TiO2.
研究了一种有机改性的二氧化钛纳米复合材料用于葡萄糖检测。将双丁基紫精（BBV）与二氧化钛纳米颗粒混合，生成高度分散的纳米复合溶液，该溶液可形成有机改性的二氧化钛纳米复合膜（BBV-TiO₂）。使用BBV-TiO₂膜和铂栅电极制作了一种晶体管型传感器。与TiO₂传感器相比，BBV-TiO₂纳米复合传感器在低浓度区域对葡萄糖传感表现出更高的灵敏度。这一结果归因于吸附在TiO₂纳米颗粒上的紫精分子促进了电子传输，其中紫精分子充当酶与TiO₂之间的电子转移介质。
