Single-molecule Aflatoxin B1 Sensing via Pyrrole-based Molecular Quantum Dot

被引:4
作者
Mo, Fabrizio [1 ]
Spano, Chiara Elfi [1 ]
Ardesi, Yuri [1 ]
Roch, Massimo Ruo [1 ]
Piccinini, Gianluca [1 ]
Graziano, Mariagrazia [2 ]
机构
[1] Politecn Torino, Dept Elect & Telecommun, Turin, Italy
[2] Politecn Torino, Dept Appl Sci & Technol, Turin, Italy
来源
2022 IEEE 22ND INTERNATIONAL CONFERENCE ON NANOTECHNOLOGY (NANO) | 2022年
关键词
POLYPYRROLE;
D O I
10.1109/NANO54668.2022.9928694
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We investigate through ab-initio simulations the gold-8PyrroleDiThiol-gold (Au-8PyDT) molecular quantum dot as an amperometric single-molecule sensor for the aflatoxin B1 (AFB1) detection. We study the adsorption of AFB1 onto the Au-8PyDT and we analyze the transport characteristics for the most probable adsorption configuration. We find that a significant current modulation occurs, with around 80% of current decrease in presence of AFB1. Interestingly, the investigated sensor exhibits a voltage-dependent response, that we motivate through a transmission properties analysis. Our results, considering the synthesis simplicity of PolyPyrroles and their non-toxicity, motivate future research efforts in this direction.
引用
收藏
页码:153 / 156
页数:4
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