標題: Gold Nanostructures on Flexible Substrates as Electrochemical Dopamine Sensors
作者: Hsu, Ming-Sheng
Chen, Yu-Liang
Lee, Chi-Young
Chiu, Hsin-Tien
應用化學系
電機工程學系
Department of Applied Chemistry
Department of Electrical and Computer Engineering
關鍵字: gold;nanocoral;nanoslice;nanowire;electrodeposition;dopamine;sensor
公開日期: 1-十月-2012
摘要: In this study, we fabricated Au nanowires (NWs), nanoslices (NSs), and nanocorals (NCs) on flexible polyethylene terephthalate (PET) substrates via direct current electrochemical depositions. Without any surface modification, the Au nanostructures were used as the electrodes for dopamine (DA) sensing. Among them, the Au NW electrode performed exceptionally well. The determined linear range for DA detection was 0.2- 600 mu M (N = 3) and the sensitivity was 178 nA/mu M cm(2), while the detection limit was 26 nM (S/N = 3). After 10 repeated measurements, 95% of the original anodic current values were maintained for the nanostructured electrodes. Sequential additions of citric acid (CA, 1 mM), uric acid (UA, saturated), and ascorbic acid (AA, 1 mu M) did not interfere the amperometric response from the addition of DA (0.1 mu M).
URI: http://dx.doi.org/10.1021/am301452b
http://hdl.handle.net/11536/20435
ISSN: 1944-8244
DOI: 10.1021/am301452b
期刊: ACS APPLIED MATERIALS & INTERFACES
Volume: 4
Issue: 10
起始頁: 5570
結束頁: 5575
顯示於類別:期刊論文


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