Single-molecule aflatoxin B1 sensing via pyrrole-based molecular quantum dot
2022 IEEE 22nd International Conference on Nanotechnology (NANO), 2022•ieeexplore.ieee.org
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 …
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 …
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.
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