Oleylamine-Functionalized Graphene Oxide in Wearable Flexible Organic Field-Effect Transistors for Ultrasensitive NH3 Detection.

IF 8.2 1区化学 Q1 CHEMISTRY, ANALYTICAL

ACS Sensors Pub Date : 2025-05-20 DOI:10.1021/acssensors.5c00563

Fushuang Pang,Shanshan Cheng,Hui Yang,Wenping Hu

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引用次数: 0

Abstract

Organic field-effect transistors (OFETs) have demonstrated significant potential in wearable exhaled gas sensing due to their excellent mechanical flexibility, multiparameter measurement capabilities, and signal amplification advantages. However, combining excellent sensing performance with good mechanical robustness remains a key challenge that must be addressed in practical applications. In this study, we developed a flexible gas sensor by incorporating the elastomer styrene-ethylene-butylene-styrene to enhance the strain stability of the semiconductor layer. Additionally, the gas-sensing material oleylamine-functionalized graphene oxide was used to significantly improve the device's response to NH3. The flexible sensor exhibits excellent sensing performance with outstanding selectivity for NH3 in exhaled breath, demonstrating a high sensitivity of 67% ppm-1 and a low theoretical limit of detection of 9.19 ppb. Moreover, it can be comfortably attached to human skin and retains high strain stability, maintaining excellent sensing performance even after tensile deformation. Therefore, with its robust detection capabilities and comfortable wearable features, this OFET-based gas sensor holds great promise for the auxiliary diagnosis of early-stage kidney diseases.

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用于超灵敏NH3检测的可穿戴柔性有机场效应晶体管中的油胺功能化氧化石墨烯。

有机场效应晶体管（ofet）由于其优异的机械灵活性、多参数测量能力和信号放大优势，在可穿戴式呼出气体传感中显示出巨大的潜力。然而，将优异的传感性能与良好的机械鲁棒性相结合仍然是实际应用中必须解决的关键挑战。在这项研究中，我们开发了一种柔性气体传感器，通过结合弹性体苯乙烯-乙烯-丁烯-苯乙烯来提高半导体层的应变稳定性。此外，采用了气敏材料聚胺功能化氧化石墨烯，显著提高了器件对NH3的响应。柔性传感器具有优异的传感性能，对呼出气体中NH3具有出色的选择性，具有67% ppm-1的高灵敏度和9.19 ppb的低理论检测限。此外，它可以舒适地附着在人体皮肤上，并保持高应变稳定性，即使在拉伸变形后也能保持优异的传感性能。因此，由于其强大的检测能力和舒适的可穿戴特性，这种基于ofet的气体传感器在早期肾脏疾病的辅助诊断方面具有很大的前景。

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来源期刊

ACS Sensors Chemical Engineering-Bioengineering

CiteScore

14.50

自引率

3.40%

发文量

372

期刊介绍： ACS Sensors is a peer-reviewed research journal that focuses on the dissemination of new and original knowledge in the field of sensor science, particularly those that selectively sense chemical or biological species or processes. The journal covers a broad range of topics, including but not limited to biosensors, chemical sensors, gas sensors, intracellular sensors, single molecule sensors, cell chips, and microfluidic devices. It aims to publish articles that address conceptual advances in sensing technology applicable to various types of analytes or application papers that report on the use of existing sensing concepts in new ways or for new analytes.