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Li YX, Yang M, Li PH, Chen SH, Li YY, Guo Z, Li SS, Jiang M, Lin CH, Huang XJ. Changing the Blood Test: Accurate Determination of Mercury(II) in One Microliter of Blood Using Oriented ZnO Nanobelt Array Film Solution-Gated Transistor Chips. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2019; 15:e1902433. [PMID: 31304682 DOI: 10.1002/smll.201902433] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 06/28/2019] [Indexed: 06/10/2023]
Abstract
The measurement of ultralow concentrations of heavy metal ions (HMIs) in blood is challenging. A new strategy for the determination of mercury ions (Hg2+ ) based on an oriented ZnO nanobelt (ZnO-NB) film solution-gated field-effect transistor (FET) chip is adopted. The FET chips are fabricated with ZnO-NB film channels with different orientations utilizing the Langmuir-Blodgett (L-B) assembly technique. The combined simulation and I-V behavior results show that the nanodevice with ZnO-NBs parallel to the channel has exceptional performance. The sensing capability of the oriented ZnO-NB film FET chips corresponds to an ultralow minimum detectable level (MDL) of 100 × 10-12 m in deionized water due to the change in the electrical double layer (EDL) arising from the synergism of the field-induced effect and the specific binding of Hg2+ to the thiol groups (-SH) on the film surface. Moreover, the prepared FET chips present excellent selectivity toward Hg2+ , excellent repeatability, and a rapid response time (less than 1 s) for various Hg2+ concentrations. The sensing performance corresponds to a low MDL of 10 × 10-9 m in real samples of a drop of blood.
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Affiliation(s)
- Yi-Xiang Li
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, P. R. China
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Meng Yang
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, P. R. China
| | - Pei-Hua Li
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, P. R. China
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Shi-Hua Chen
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, P. R. China
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Yong-Yu Li
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, P. R. China
- Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601, P. R. China
| | - Zheng Guo
- Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601, P. R. China
| | - Shan-Shan Li
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, P. R. China
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Min Jiang
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, P. R. China
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Chu-Hong Lin
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, P. R. China
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Xing-Jiu Huang
- Key Laboratory of Environmental Optics and Technology, and Institute of Intelligent Machines, Chinese Academy of Sciences, Hefei, 230031, P. R. China
- Department of Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
- Institutes of Physical Science and Information Technology, Anhui University, Hefei, 230601, P. R. China
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