Yu Y, Cimeno A, Lan Y C, Rybczynski J, Wang D Z, Paudel T, Ren Z F, Wagner D J, Qiu M Q, Chiles T C, Cai D
Institute of Nanoscience and Nanotechnology, Huazhong Normal University, Wuhan 430079, P.R. China.
Micro Nano Lett. 2009 Mar 1;4(1):27-33. doi: 10.1049/mnl:20080054.
Patterned carbon nanotubes arrays (PCNTA) with reduced density and length were developed with polystyrene sphere masked catalyst dots followed by plasma enhanced chemical vapor deposition method. The nanotubes were then uniformly coated with electropolymerized polypyrrole (PPy). The coating thickness was conformally adjustable. Gold nanoparticles (AuNP) together with glucose oxidase (Gox) were doped into the PPy film on the nanotubes to develop a high performance PCNTA glucose sensor. The sensitivity of the sensor was improved by the co-existence of Gox and AuNP on the carbon nanotube. Moreover, in contrast to previous reported PCNTA glucose sensors, the design herein utilized the entire surface of nanotubes as active sensing areas in order to maximize the Faradic currents. This research outlines a practical avenue to fabricate high performance PCNTA sensor chips with multiple molecules and functional nano-architectures.
采用聚苯乙烯球掩膜催化剂点，通过等离子体增强化学气相沉积法制备了密度和长度降低的图案化碳纳米管阵列（PCNTA）。然后，用聚吡咯（PPy）对纳米管进行均匀涂覆。涂层厚度可保形调节。将金纳米颗粒（AuNP）与葡萄糖氧化酶（Gox）一起掺杂到纳米管上的PPy薄膜中，以开发一种高性能的PCNTA葡萄糖传感器。碳纳米管上Gox和AuNP的共存提高了传感器的灵敏度。此外，与先前报道的PCNTA葡萄糖传感器相比，本文的设计将纳米管的整个表面用作活性传感区域，以最大化法拉第电流。本研究概述了一条制造具有多种分子和功能纳米结构的高性能PCNTA传感器芯片的实用途径。
