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 |