A vapor sensor array using multiple localized surface plasmon resonance bands in a single UV-vis spectrum
A vapor sensor array using multiple localized surface plasmon resonance bands in a single UV-vis spectrum
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DOI：
10.1016/j.talanta.2010.03.023
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发表时间：
2010-06-15
期刊：
影响因子：
6.1
通讯作者：
Lu, Chia-Jung
中科院分区：
文献类型：
--
作者：
Chen, Kuan-Jen;Lu, Chia-Jung
本研究报道了一种由三种表面修饰纳米粒子组成的传感器阵列，这些纳米粒子在紫外可见光谱的不同波长区域表现出局部表面等离子体共振（LSPR）消光。通过同时测量三种纳米材料的LSPR波段的系综，得到了在紫外可见光谱的不同区域的响应模式。金纳米粒子和金纳米壳经十硫醇修饰后，其LSPR波段的中心波长分别为427、534和772 nm。萘硫醇和2-巯基苯并噻唑产生化学选择性。每个LSPR波段吸光度的平均绝对差值作为每个传感器可逆的信号。该传感器阵列对9种具有不同官能团的挥发性有机化合物（VOCs）进行了检测，得到了可微分的响应模式群，对苯甲醚的检出限低至16 ppm。(C) 2010 Elsevier B V版权所有
This research reports a sensor array consisting of three types of surface-modified nanoparticles that exhibit localized surface plasmon resonance (LSPR) extinctions at different wavelength regions of a UV-vis spectrum By simultaneously measuring the ensemble of the LSPR bands of the three nanomaterials, response patterns were obtained at different regions of a UV-vis spectrum Three types of nanometals used in this study were Ag nanoparticles. Au nanoparticles and Au nano-shells The center wavelengths of their LSPR bands wet e 427, 534 and 772 nm respectively, after they were each modified with decanethiol. naphthalene thiol and 2-mercaptobenzothiazole to create chemical selectivity. The average absolute difference in the absorbance of each LSPR band was used as the signal for each sensor Reversible. rapid (similar to 8 s) and wide linear range responses were observed with this sensor array Nine volatile organic compounds (VOCs) with various functional groups were tested with this sensor array and differentiable groups of response patterns were obtained The detection limits were as low as 16 ppm for anisole. (C) 2010 Elsevier B V All rights reserved.