化学
咖啡酸
检出限
表面等离子共振
支柱
纳米颗粒
分子
电化学气体传感器
电化学
可见光谱
线性范围
纳米技术
核化学
组合化学
化学工程
电极
光电子学
色谱法
有机化学
物理化学
材料科学
工程类
结构工程
抗氧化剂
作者
Wang Jin,Lin Zhou,Jiali Bei,Qiyuan Zhao,Xue Li,Jiaqi He,Yan Cai,Tingting Chen,Yukou Du,Yong Yao
出处
期刊:Talanta
[Elsevier]
日期:2022-06-01
卷期号:243: 123322-123322
被引量:18
标识
DOI:10.1016/j.talanta.2022.123322
摘要
Pillar [5]arene, a new water-soluble carboxylatopillar [5]arene ammonium salts (WP5), has been employed as the host for complexation of guest molecules. Herein, a visible light driven WP5 functionalized gold nanoparticles (Au@WP5) was fabricated for ultrasensitive photelectrochemical (PEC) detection of caffeic acid (CA). The ultraviolet-visible spectrum characteristics, PEC response results of samples in caffeic acid solution confirm the localized surface plasmon resonance effect of Au NPs and the host-guest interaction between WP5 and CA are responsible for the enhanced PEC sensing performance. Under optimal conditions, the sensitive PEC sensor constructed with Au@WP5 exhibited the concentration linear range from 0.025 μM to 370 μM and a detection limit of 0.01 μM (S/N = 3). Importantly, the good anti-interference ability, stability and reproducibility of the proposed PEC sensor providing the promising detection application of pillar [5]arene functionalized photoactive materials in food and drinks.
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