Direct Active Site at the Van der Waals Heterostructure Interface with Synthetic Drug Analogue N-Methylphenethylimine Ultrasensitivity,ACS Sensors

当前位置： X-MOL 学术 › ACS Sens. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Direct Active Site at the Van der Waals Heterostructure Interface with Synthetic Drug Analogue N-Methylphenethylimine Ultrasensitivity
ACS Sensors ( IF 8.2 ) Pub Date : 2023-02-16 , DOI: 10.1021/acssensors.2c02829
Zhen Zhu _{1,

2} , Huan Liu ₁ , Pengfei Ding _{1,

2} , Yanyan Fu _{1,

2} , Huimin Cao ₁ , Wei Xu _{1,

2} , Qingguo He _{1,

2} , Jiangong Cheng _{1,

2}

Affiliation

CNT/organic probe-based chemiresistive sensors suffer from the problem of low sensitivity and poor stability due to the unstable and unfavorable CNT/organic probe interface. A new designing strategy of a one-dimensional van der Waals heterostructure was developed for ultrasensitive vapor sensing. By modifying the perylene diimide molecule at the bay region with phenoxyl and further Boc-NH- phenoxy side chains, a highly stable 1D VDW heterostructure SWCNT-probe molecule system was formed with ultrasensitivity and specificity. Interfacial recognition sites consisting of SWCNT and the probe molecule are responsible for the synergistical and excellent sensing response to MPEA molecules, which was proved by Raman, XPS, and FTIR characterizations together with dynamic simulation. Based on such a sensitive and stable VDW heterostructure system, the measured detection limit reached as low as 3.6 ppt for the synthetic drug analogue N-methylphenethylimine (MPEA) in the vapor phase, and the sensor showed almost no performance degradation even after 10 days. Furthermore, a miniaturized detector was developed for real-time monitoring of drug vapor detection.

中文翻译：

范德瓦尔斯异质结构界面的直接活性位点与合成药物类似物 N-甲基苯乙亚胺超敏性

由于CNT/有机探针界面不稳定和不利，基于CNT/有机探针的化学电阻传感器存在灵敏度低和稳定性差的问题。为超灵敏蒸汽传感开发了一种新的一维范德瓦尔斯异质结构设计策略。通过用苯氧基和进一步的 Boc-NH-苯氧基侧链修饰 bay 区域的苝二酰亚胺分子，形成了具有超灵敏性和特异性的高度稳定的 1D VDW 异质结构 SWCNT 探针分子系统。由 SWCNT 和探针分子组成的界面识别位点负责对 MPEA 分子的协同和出色的传感响应，这已通过拉曼、XPS 和 FTIR 表征以及动态模拟证明。基于这样一个灵敏稳定的VDW异质结构系统，N-甲基苯乙基亚胺 (MPEA) 在气相中，即使在 10 天后，传感器的性能也几乎没有下降。此外，还开发了一种用于实时监测药物蒸气检测的微型检测器。

更新日期：2023-02-16

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11