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Metal-Organic Framework Assembled on Oriented Nanofiber Arrays for Field-Effect Transistor and Gas Sensor-Based Applications
| Content Provider | MDPI |
|---|---|
| Author | Mu, Jinlong Zhong, Xing Dai, Wei Pei, Xin Sun, Jian Zhang, Junyuan Luo, Wenjun Zhou, Wei |
| Copyright Year | 2022 |
| Description | Metal–organic framework (MOF) films are essential for numerous sensor and device applications. However, metal-organic framework materials have poor machinability due to their predominant powder-like nature, and their presence as the active layer in a device can seriously affect the performance and utility of the device. Herein, active layers of field-effect transistor (FETs) devices and chemiresistor gas sensors with high performance were constructed by loading $Cu_{3}(HITP)_{2}$ (HITP = 2,3,6,7,10,11-hexaiminotriphenylene) in situ-axial anchoring on oriented nanofiber arrays prepared via electrospinning. The strong interaction between polar groups on the polymer chains and metal ions promotes the nucleation of $Cu_{3}(HITP)_{2}$, steric hindrance makes particles of $Cu_{3}(HITP)_{2}$ with uniform size, morphology, and good crystallinity during nucleation by liquid phase epitaxial growth (LPE). Influences of differently-oriented $Cu_{3}(HITP)_{2}$ NFAs-based FETs on the electrical properties were studied, optimally oriented $Cu_{3}(HITP)_{2}$ NFAs-based FETs showed good mobility of 5.09 $cm^{2}$/V·s and on/off ratio of 9.6 × $10^{3}$. Moreover, excellent gas sensing response characteristics were exhibited in sensing volatile organic compounds (VOCs). Chemiresistor gas sensors with high response value, faster response and recovery are widely suited for VOCs. It brings new inspirations for the design and utilization of electrically conductive MOFs as an active layer for FETs and sensor units for chemiresistor gas sensors. |
| Starting Page | 2131 |
| e-ISSN | 14203049 |
| DOI | 10.3390/molecules27072131 |
| Journal | Molecules |
| Issue Number | 7 |
| Volume Number | 27 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-03-25 |
| Access Restriction | Open |
| Subject Keyword | Molecules Inorganic Chemistry Metal–organic Frameworks Liquid Epitaxial Growth Oriented Nanofiber Arrays Field-effect Transistor Gas Sensor |
| Content Type | Text |
| Resource Type | Article |
