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Gao N, Pan J, Wang L, Cai Z, Chang G, Wu Y, He Y. Novel graphene electrochemical transistors incorporating zirconia inorganic molecular imprinted layer:Design, construction and application for highly sensitive and selective detection of acetaminophen. Anal Chim Acta 2023; 1269:341405. [PMID: 37290852 DOI: 10.1016/j.aca.2023.341405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/11/2023] [Accepted: 05/22/2023] [Indexed: 06/10/2023]
Abstract
Owing to their intrinsic amplifying effect together with chemical stability, graphene electrochemical transistor sensors (GECTs) are gaining momentum for sensing applications. However, the surface of GECTs for different detection substances must be modified with different recognition molecules, which was cumbersome and lack a universal method. Molecularly imprinted polymer (MIP) is a kind of polymer with specific recognition function for given molecules. Here, MIP and GECTs were combined to effectively solve the problem of weak selectivity of GECTs, and achieve the high sensitivity and selectivity of MIP-GECTs equipment in detecting acetaminophen (AP) in complex urine environment. A novel molecular imprinting sensor based on Au nanoparticles modified zirconia (ZrO2) inorganic molecular imprinting membrane on reduced graphene oxide (ZrO2-MIP-Au/rGO) was proposed. ZrO2-MIP-Au/rGO was synthesized by one-step electropolymerization using AP as template, ZrO2 precursor as the functional monomer. The -OH group on ZrO2 and the -OH/-CONH- group on AP were easily bonded by hydrogen bonding to form a MIP layer on the surface, which allows the sensor to have a large number of imprinted cavities for AP specific adsorption. As a proof of method, the GECTs based on ZrO2-MIP-Au/rGO functional gate electrode has the characteristics of wide linear range (0.1 nM-4 mM), low detection limit (0.1 nM) and high selectivity for AP detection. These achievements highlight the introduction of specific and selective MIP to GECTs with unique amplification function, which could effectively solve the problem of selectivity of GECTs in complex environments, suggesting the potential of MIP-GECTs in real-time diagnosis.
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Affiliation(s)
- Nan Gao
- Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, No.368 Youyi Avenue, Wuchang, Wuhan, 430062, China
| | - Junzi Pan
- Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, No.368 Youyi Avenue, Wuchang, Wuhan, 430062, China
| | - Lei Wang
- Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, No.368 Youyi Avenue, Wuchang, Wuhan, 430062, China
| | - Zhiwei Cai
- Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, No.368 Youyi Avenue, Wuchang, Wuhan, 430062, China
| | - Gang Chang
- Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, No.368 Youyi Avenue, Wuchang, Wuhan, 430062, China.
| | - Yuxiang Wu
- School of Physical Education, Jianghan University, Wuhan, 430056, China.
| | - Yunbin He
- Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Hubei Key Laboratory of Polymer Materials, School of Materials Science and Engineering, Hubei University, No.368 Youyi Avenue, Wuchang, Wuhan, 430062, China.
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2
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Zhang X, Pu Z, Su X, Li C, Zheng H, Li D. Flexible organic field-effect transistors-based biosensors: progress and perspectives. Anal Bioanal Chem 2023; 415:1607-1625. [PMID: 36719440 PMCID: PMC9888355 DOI: 10.1007/s00216-023-04553-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 01/10/2023] [Accepted: 01/17/2023] [Indexed: 02/01/2023]
Abstract
Organic field-effect transistors (OFETs) have been proposed beyond three decades while becoming a research hotspot again in recent years because of the fast development of flexible electronics. Many novel flexible OFETs-based devices have been reported in these years. Among these devices, flexible OFETs-based sensors made great strides because of the extraordinary sensing capability of FET. Most of these flexible OFETs-based sensors were designed for biological applications due to the advantages of flexibility, reduced complexity, and lightweight. This paper reviews the materials, fabrications, and applications of flexible OFETs-based biosensors. Besides, the challenges and opportunities of the flexible OFETs-based biosensors are also discussed.
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Affiliation(s)
- Xingguo Zhang
- State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, China
| | - Zhihua Pu
- State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, China.
| | - Xiao Su
- State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, China
| | - Chengcheng Li
- State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, China
| | - Hao Zheng
- State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, China
| | - Dachao Li
- State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin, China.
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3
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Song Y, Tang W, Han L, Liu Y, Shen C, Yin X, Ouyang B, Su Y, Guo X. Integration of nanomaterial sensing layers on printable organic field effect transistors for highly sensitive and stable biochemical signal conversion. NANOSCALE 2023; 15:5537-5559. [PMID: 36880412 DOI: 10.1039/d2nr05863d] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Organic field effect transistor (OFET) devices are one of the most popular candidates for the development of biochemical sensors due to their merits of being flexible and highly customizable for low-cost large-area manufacturing. This review describes the key points in constructing an extended-gate type OFET (EGOFET) biochemical sensor with high sensitivity and stability. The structure and working mechanism of OFET biochemical sensors are described firstly, emphasizing the importance of critical material and device engineering to higher biochemical sensing capabilities. Next, printable materials used to construct sensing electrodes (SEs) with high sensitivity and stability are presented with a focus on novel nanomaterials. Then, methods of obtaining printable OFET devices with steep subthreshold swing (SS) for high transconductance efficiency are introduced. Finally, approaches for the integration of OFETs and SEs to form portable biochemical sensor chips are introduced, followed by several demonstrations of sensory systems. This review will provide guidelines for optimizing the design and manufacturing of OFET biochemical sensors and accelerating the movement of OFET biochemical sensors from the laboratory to the marketplace.
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Affiliation(s)
- Yawen Song
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Wei Tang
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Lei Han
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Yan Liu
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Chaochao Shen
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Xiaokuan Yin
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Bang Ouyang
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Yuezeng Su
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
| | - Xiaojun Guo
- School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.
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4
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Ohshiro K, Sasaki Y, Minami T. An extended-gate-type organic transistor-based enzymatic sensor for dopamine detection in human urine. TALANTA OPEN 2023. [DOI: 10.1016/j.talo.2023.100190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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5
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Liu J, Dou C, Chen W, Yan H, Ma WZ, Meng D, You XQ, Chen YS, Zhou C, Zhuang P. Ultrasensitive graphene sensor for nitrate detection using triethylamine as a probe molecule. Microchem J 2022. [DOI: 10.1016/j.microc.2022.108043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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6
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Ibrahim H, Yin S, Moru S, Zhu Y, Castellano MJ, Dong L. In Planta Nitrate Sensor Using a Photosensitive Epoxy Bioresin. ACS APPLIED MATERIALS & INTERFACES 2022; 14:25949-25961. [PMID: 35638646 DOI: 10.1021/acsami.2c01988] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Nitrogen management through monitoring of crop nitrate status can improve agricultural productivity, profitability, and environmental performance. Current plant nitrate test methods require expensive instruments, time-intensive labor, and trained personnel. Frequent monitoring of in planta nitrate levels of the stalks in living plants can help to better understand the nitrogen cycle and the physiological responses to environmental variations. Although existing enzymatic electrochemical sensors provide high selectivity, they suffer from short shelf life, high cost, low-temperature storage requirement, and potential degradation over time. To overcome these issues, an artificial enzyme (vitamin B12 or VB12) and a two-dimensional material (graphene oxide or GO) are introduced into a conventional photoresist (SU8) to form a bioresin SU8-GO-VB12 that can be patterned with photolithography and laser-pyrolyzed into a carbon-based nanocomposite C-GO-VB12. The electrocatalytic activity of the cobalt factor in VB12, the surface enhancement properties of GO, and the porous feature of pyrolytic carbon are synergized through design to provide C-GO-VB12 with a superior ability to detect nitrate ions through redox reactions. In addition, laser writing-based selective pyrolysis allows applying thermal energy to target only SU8-GO-VB12 for selective pyrolysis of the bioresin into C-GO-VB12, thus reducing the total energy input and avoiding the thermal influence on the materials and structures in other areas of the substrate. The C-GO-VB12 nitrate sensor demonstrates a year-long shelf lifetime, high selectivity, and a wide dynamic range that enables a direct nitrate test for the extracted sap of maize stalk. For in situ monitoring of the nitrate level and dynamic changes in living maize plants, a microelectromechanical system-based needle sensor is formed with C-GO-VB12. The needle sensor allows direct insertion into the plant for in situ measurement of nitrate ions under different growth environments over time. The needle sensor represents a new method for monitoring in planta nitrate dynamics with no need for sample preparation, thus making a significant impact in plant sciences.
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Affiliation(s)
- Hussam Ibrahim
- Department of Electrical & Computer Engineering, Iowa State University, Ames, Iowa 50011, United States
- Microelectronics Research Center, Iowa State University, Ames, Iowa 50011, United States
| | - Shihao Yin
- Department of Electrical & Computer Engineering, Iowa State University, Ames, Iowa 50011, United States
- Microelectronics Research Center, Iowa State University, Ames, Iowa 50011, United States
| | - Satyanarayana Moru
- Department of Electrical & Computer Engineering, Iowa State University, Ames, Iowa 50011, United States
| | - Yunjiao Zhu
- Agronomy Department, Iowa State University, Ames, Iowa 50011, United States
| | | | - Liang Dong
- Department of Electrical & Computer Engineering, Iowa State University, Ames, Iowa 50011, United States
- Microelectronics Research Center, Iowa State University, Ames, Iowa 50011, United States
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7
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Point-of-use printed nitrate sensor with desalination units. Mikrochim Acta 2022; 189:221. [PMID: 35578126 DOI: 10.1007/s00604-022-05314-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 04/19/2022] [Indexed: 10/18/2022]
Abstract
Nitrate is an important marker of water quality that can be challenging to detect in seawater due to the presence of multiple chemical interferants and high background chloride. Here, we demonstrate a compact microfluidic device that incorporates electrochemical desalination to selectively remove the interfering chloride ions and improve the detection limit of the downstream potentiometric nitrate sensor. The microfluidic platform was fabricated by a low-cost cut-and-lamination approach, and the detection mechanism was based on potentiometric measurements at an Ag/AgCl electrode coated with a nitrate-selective membrane. The sensor system achieved a detection limit of 0.5 mM with a sensitivity of 11.3 mV/dec under continuous flow.
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8
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Fan Y, Wang X, Qian X, Dixit A, Herman B, Lei Y, McCutcheon J, Li B. Enhancing the Understanding of Soil Nitrogen Fate Using a 3D-Electrospray Sensor Roll Casted with a Thin-Layer Hydrogel. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2022; 56:4905-4914. [PMID: 35274533 DOI: 10.1021/acs.est.1c05661] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Accurate and continuous monitoring of soil nitrogen is critical for determining its fate and providing early warning for swift soil nutrient management. However, the accuracy of existing electrochemical sensors is hurdled by the immobility of targeted ions, ion adsorption to soil particles, and sensor reading noise and drifting over time. In this study, polyacrylamide hydrogel with a thickness of 0.45 μm was coated on the surface of solid-state ion-selective membrane (S-ISM) sensors to absorb water contained in soil and, consequently, enhance the accuracy (R2 > 0.98) and stability (drifting < 0.3 mV/h) of these sensors monitoring ammonium (NH4+) and nitrate (NO3-) ions in soil. An ion transport model was built to simulate the long-term NH4+ dynamic process (R2 > 0.7) by considering the soil adsorption process and soil complexity. Furthermore, a soil-based denoising data processing algorithm (S-DDPA) was developed based on the unique features of soil sensors including the nonlinear mass transfer and ion diffusion on the heterogeneous sensor-hydrogel-soil interface. The 14 day tests using real-world soil demonstrated the effectiveness of S-DDPA to eliminate false signals and retrieve the actual soil nitrogen information for accurate (error: <2 mg/L) and continuous monitoring.
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Affiliation(s)
- Yingzheng Fan
- Department of Civil and Environmental Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Xingyu Wang
- Department of Civil and Environmental Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Xin Qian
- Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Anand Dixit
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Brianna Herman
- Department of Civil and Environmental Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Yu Lei
- Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Jeffrey McCutcheon
- Department of Chemical and Biomolecular Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Baikun Li
- Department of Civil and Environmental Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
- Center for Environmental Science and Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
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9
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Veloz Martínez I, Ek JI, Ahn EC, Sustaita AO. Molecularly imprinted polymers via reversible addition-fragmentation chain-transfer synthesis in sensing and environmental applications. RSC Adv 2022; 12:9186-9201. [PMID: 35424874 PMCID: PMC8985154 DOI: 10.1039/d2ra00232a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Accepted: 02/23/2022] [Indexed: 12/14/2022] Open
Abstract
Molecularly imprinted polymers (MIP) have shown their potential as artificial and selective receptors for environmental monitoring. These materials can be tailor-made to achieve a specific binding event with a template through a chosen mechanism. They are capable of emulating the recognition capacity of biological receptors with superior stability and versatility of integration in sensing platforms. Commonly, these polymers are produced by traditional free radical bulk polymerization (FRP) which may not be the most suitable for enhancing the intended properties due to the poor imprinting performance. To improve the imprinting technique and the polymer capabilities, controlled/living radical polymerization (CRP) has been used to overcome the main drawbacks of FRP. Combining CRP techniques such as RAFT (reversible addition-fragmentation chain transfer) with MIP has achieved higher selectivity, sensitivity, and sorption capacity of these polymers when implemented as the transductor element in sensors. The present work focuses on RAFT-MIP design and synthesis strategies to enhance the binding affinities and their implementation in environmental contaminant sensing applications.
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Affiliation(s)
- Irvin Veloz Martínez
- School of Engineering and Science, Tecnologico de Monterrey Av. Eugenio Garza Sada 2501 Monterrey N.L. 64849 Mexico
| | - Jackeline Iturbe Ek
- School of Engineering and Science, Tecnologico de Monterrey Av. Eugenio Garza Sada 2501 Monterrey N.L. 64849 Mexico
| | - Ethan C Ahn
- Department of Electrical and Computer Engineering, The University of Texas at San Antonio San Antonio TX 78249 USA
| | - Alan O Sustaita
- School of Engineering and Science, Tecnologico de Monterrey Av. Eugenio Garza Sada 2501 Monterrey N.L. 64849 Mexico
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10
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Ohshiro K, Sasaki Y, Zhou Q, Lyu X, Yamanashi Y, Nakahara K, Nagaoka H, Minami T. Oxytocin detection at ppt level in human saliva by an extended-gate-type organic field-effect transistor. Analyst 2022; 147:1055-1059. [PMID: 35191913 DOI: 10.1039/d1an02188e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Herein, we report an extended-gate-type organic field-effect transistor (OFET) sensor for oxytocin. The fabricated OFET-based immunosensor has successfully detected oxytocin at a ppt level in human saliva with high recovery rates (96-102%). We believe our sensor would pave the way for the realization of portable sensors for healthcare monitoring.
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Affiliation(s)
- Kohei Ohshiro
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8505, Japan.
| | - Yui Sasaki
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8505, Japan.
| | - Qi Zhou
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8505, Japan.
| | - Xiaojun Lyu
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8505, Japan.
| | - Yusuke Yamanashi
- JNC Petrochemical Corp., 5-1, Goikaigan, Ichihara, Chiba, 290-8551, Japan
| | - Katsumasa Nakahara
- JNC Petrochemical Corp., 5-1, Goikaigan, Ichihara, Chiba, 290-8551, Japan
| | - Hirokazu Nagaoka
- JNC Petrochemical Corp., 5-1, Goikaigan, Ichihara, Chiba, 290-8551, Japan
| | - Tsuyoshi Minami
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo, 153-8505, Japan.
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Sarcina L, Macchia E, Tricase A, Scandurra C, Imbriano A, Torricelli F, Cioffi N, Torsi L, Bollella P. Enzyme based field effect transistor: State‐of‐the‐art and future perspectives. ELECTROCHEMICAL SCIENCE ADVANCES 2022. [DOI: 10.1002/elsa.202100216] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Affiliation(s)
- Lucia Sarcina
- Dipartimento di Chimica Università degli Studi di Bari “Aldo Moro” Bari Italy
| | - Eleonora Macchia
- Faculty of Science and Engineering Åbo Akademi University Turku Finland
| | - Angelo Tricase
- Dipartimento di Chimica Università degli Studi di Bari “Aldo Moro” Bari Italy
| | - Cecilia Scandurra
- Dipartimento di Chimica Università degli Studi di Bari “Aldo Moro” Bari Italy
| | - Anna Imbriano
- Dipartimento di Chimica Università degli Studi di Bari “Aldo Moro” Bari Italy
- Centre for Colloid and Surface Science ‐ Università degli Studi di Bari “Aldo Moro” Bari Italy
| | - Fabrizio Torricelli
- Dipartimento Ingegneria dell'Informazione Università degli Studi di Brescia Brescia Italy
| | - Nicola Cioffi
- Dipartimento di Chimica Università degli Studi di Bari “Aldo Moro” Bari Italy
- Centre for Colloid and Surface Science ‐ Università degli Studi di Bari “Aldo Moro” Bari Italy
| | - Luisa Torsi
- Dipartimento di Chimica Università degli Studi di Bari “Aldo Moro” Bari Italy
- Faculty of Science and Engineering Åbo Akademi University Turku Finland
- Centre for Colloid and Surface Science ‐ Università degli Studi di Bari “Aldo Moro” Bari Italy
| | - Paolo Bollella
- Dipartimento di Chimica Università degli Studi di Bari “Aldo Moro” Bari Italy
- Centre for Colloid and Surface Science ‐ Università degli Studi di Bari “Aldo Moro” Bari Italy
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12
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Bhavadharini B, Kavimughil M, Malini B, Vallath A, Prajapati HK, Sunil CK. Recent Advances in Biosensors for Detection of Chemical Contaminants in Food — a Review. FOOD ANAL METHOD 2022. [DOI: 10.1007/s12161-021-02213-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Abstract
The continuously rising interest in chemical sensors’ applications in environmental monitoring, for soil analysis in particular, is owed to the sufficient sensitivity and selectivity of these analytical devices, their low costs, their simple measurement setups, and the possibility to perform online and in-field analyses with them. In this review the recent advances in chemical sensors for soil analysis are summarized. The working principles of chemical sensors involved in soil analysis; their benefits and drawbacks; and select applications of both the single selective sensors and multisensor systems for assessments of main plant nutrition components, pollutants, and other important soil parameters (pH, moisture content, salinity, exhaled gases, etc.) of the past two decades with a focus on the last 5 years (from 2017 to 2021) are overviewed.
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Singh S, Anil AG, Kumar V, Kapoor D, Subramanian S, Singh J, Ramamurthy PC. Nitrates in the environment: A critical review of their distribution, sensing techniques, ecological effects and remediation. CHEMOSPHERE 2022; 287:131996. [PMID: 34455120 DOI: 10.1016/j.chemosphere.2021.131996] [Citation(s) in RCA: 44] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 08/13/2021] [Accepted: 08/22/2021] [Indexed: 06/13/2023]
Abstract
Nitrate pollution is eminent in almost all the developing nations as a result of increased natural activities apart from anthropogenic pollution. The release of nitrates in more than critical quantities into the water bodies causes accretion impacts on living creatures, environmental receptors, and human vigour by accumulation through the food chain. Nitrates have recently acquired researchers' huge attention and extend their roots in environmental contamination of surface and groundwater systems. The presence of nitrate in high concentrations in surface and groundwater triggers several health problems, for instance, methemoglobinemia, diabetes, eruption of infectious disorders, harmfully influence aquatic organisms. Sensing nitrate is an alternate option for monitoring the distribution of nitrate in different water bodies. Here we review electrochemical, spectroscopic, and electrical modes of nitrate sensing. It is concluded that, among the various sensors discussed in this review, FET sensors are the most desirable choice. Their sensitivity, ease of use and scope for miniaturisation are exceptional. Advanced functional materials need to be designed to satiate the growing need for environmental monitoring. Different sources of nitrate contamination in ground and surface water can be estimated using different techniques such as nitrate isotopic composition, co contaminants, water tracers, and other specialized techniques. This review intends to explore the research work on remediation of nitrate from wastewater and soil using different processes such as reverse osmosis, chemical denitrification, biological denitrification, ion exchange, electrodialysis, and adsorption. Denitrification proves as a promising alternative over previously reported techniques in terms of their nitrate removal because of its high cost-effectiveness.
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Affiliation(s)
- Simranjeet Singh
- Interdisciplinary Centre for Water Research (ICWaR), Indian Institute of Science, Bangalore, 56001, India
| | - Amith G Anil
- Department of Material Engineering, Indian Institute of Science, Bangalore, 56001, India
| | - Vijay Kumar
- Department of Chemistry, Central Ayurveda Research Institute, Jhansi, U.P. , India
| | - Dhriti Kapoor
- Department of Botany, Lovely Professional University, Jalandhar, Punjab, 144111, India
| | - S Subramanian
- Department of Material Engineering, Indian Institute of Science, Bangalore, 56001, India
| | - Joginder Singh
- Department of Microbiology, Lovely Professional University, Jalandhar, Punjab, 144111, India.
| | - Praveen C Ramamurthy
- Interdisciplinary Centre for Water Research (ICWaR), Indian Institute of Science, Bangalore, 56001, India.
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Affiliation(s)
- Liang Luo
- State Key Laboratory of Applied Organic Chemistry (SKLAOC) Lanzhou University Lanzhou P. R. China
| | - Zitong Liu
- State Key Laboratory of Applied Organic Chemistry (SKLAOC) Lanzhou University Lanzhou P. R. China
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17
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18
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Li L, Ma X, Xiao Y, Wang Y. Construction and Application of Graphene Oxide-Bovine Serum Albumin Modified Extended Gate Field Effect Transistor Chiral Sensor. SENSORS 2021; 21:s21113921. [PMID: 34200213 PMCID: PMC8201299 DOI: 10.3390/s21113921] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/01/2021] [Accepted: 06/04/2021] [Indexed: 01/16/2023]
Abstract
Chirality is an essential natural attribute of organisms. Chiral molecules exhibit differences in biochemical processes, pharmacodynamics, and toxicological properties, and their enantioselective recognition plays an important role in explaining life science processes and guiding drug design. Herein, we developed an ultra-sensitive enantiomer recognition platform based on an extended-gate metal-oxide semiconductor field-effect-transistor (Nafion–GO@BSA–EG-MOSFET) that achieved effective chiral resolution of ultra-sensitive Lysine (Lys) and α-Methylbenzylamine (α-Met) enantiodiscrimination at the femtomole level. Bovine serum albumin (BSA) was immobilized on the surface of graphene oxide (GO) through amide bond coupling to prepare the GO@BSA complex. GO@BSA was drop-cast on deposited Au surfaces with a Nafion solution to afford the extended-gate sensing unit. Effective recognition of chiral enantiomers of mandelic acid (MA), tartaric acid (TA), tryptophan (Trp), Lys and α-Met was realized. Moreover, the introduction of GO reduced non-specific adsorption, and the chiral resolution concentration of α-Met reached the level of picomole in a 5-fold diluted fetal bovine serum (FBS). Finally, the chiral recognition mechanism of the as-fabricated sensor was proposed.
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Affiliation(s)
- Le Li
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China;
| | - Xiaofei Ma
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China;
- Correspondence: (X.M.); (Y.W.)
| | - Yin Xiao
- School of Chemical Engineering and Technology, Tianjin Engineering Research Center of Functional Fine Chemicals, Tianjin University, Tianjin 300072, China;
| | - Yong Wang
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China;
- Correspondence: (X.M.); (Y.W.)
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19
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Thomas MS, Adrahtas DZ, Frisbie CD, Dorfman KD. Modeling of Quasi-Static Floating-Gate Transistor Biosensors. ACS Sens 2021; 6:1910-1917. [PMID: 33886283 DOI: 10.1021/acssensors.1c00261] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Floating-gate transistors (FGTs) are a promising class of electronic sensing architectures that separate the transduction elements from molecular sensing components, but the factors leading to optimum device design are unknown. We developed a model, generalizable to many different semiconductor/dielectric materials and channel dimensions, to predict the sensor response to changes in capacitance and/or charge at the sensing surface upon target binding or other changes in surface chemistry. The model predictions were compared to experimental data obtained using a floating-gate (extended gate) electrochemical transistor, a variant of the generic FGT architecture that facilitates low-voltage operation and rapid, simple fabrication using printing. Self-assembled monolayer (SAM) chemistry and quasi-statically measured resistor-loaded inverters were utilized to obtain experimentally either the capacitance signals (with alkylthiol SAMs) or charge signals (with acid-terminated SAMs) of the FGT. Experiments reveal that the model captures the inverter gain and charge signals over 3 orders of magnitude variation in the size of the sensing area and the capacitance signals over 2 orders of magnitude but deviates from experiments at lower capacitances of the sensing surface (<1 nF). To guide future device design, model predictions for a large range of sensing area capacitances and characteristic voltages are provided, enabling the calculation of the optimum sensing area size for maximum charge and capacitance sensitivity.
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Affiliation(s)
- Mathew S. Thomas
- Department of Chemical Engineering and Materials Science, University of Minnesota—Twin Cities, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, United States
| | - Demetra Z. Adrahtas
- Department of Chemical Engineering and Materials Science, University of Minnesota—Twin Cities, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, United States
| | - C. Daniel Frisbie
- Department of Chemical Engineering and Materials Science, University of Minnesota—Twin Cities, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, United States
| | - Kevin D. Dorfman
- Department of Chemical Engineering and Materials Science, University of Minnesota—Twin Cities, 421 Washington Avenue SE, Minneapolis, Minnesota 55455, United States
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20
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Lin LK, Tsai JT, Díaz-Amaya S, Oduncu MR, Zhang Y, Huang PY, Ostos C, Schmelzel JP, Mohammadrahimi R, Xu P, Ulloa Gomez AM, Shuvo SN, Raghunathan N, Zhang X, Wei A, Bahr D, Peroulis D, Stanciu LA. Antidelaminating, Thermally Stable, and Cost-Effective Flexible Kapton Platforms for Nitrate Sensors, Mercury Aptasensors, Protein Sensors, and p-Type Organic Thin-Film Transistors. ACS APPLIED MATERIALS & INTERFACES 2021; 13:11369-11384. [PMID: 33625223 DOI: 10.1021/acsami.0c18426] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The inkjet printing of metal electrodes on polymer films is a desirable manufacturing process due to its simplicity but is limited by the lack of thermal stability and serious delaminating flaws in various aqueous and organic solutions. Kapton, adopted worldwide due to its superior thermal durability, allows the high-temperature sintering of nanoparticle-based metal inks. By carefully selecting inks (Ag and Au) and Kapton substrates (Kapton HN films with a thickness of 135 μm and a thermal resistance of up to 400 °C) with optimal printing parameters and simplified post-treatments (sintering), outstanding film integrity, thermal stability, and antidelaminating features were obtained in both aqueous and organic solutions without any pretreatment strategy (surface modification). These films were applied in four novel devices: a solid-state ion-selective (IS) nitrate (NO3-) sensor, a single-stranded DNA (ssDNA)-based mercury (Hg2+) aptasensor, a low-cost protein printed circuit board (PCB) sensor, and a long-lasting organic thin-film transistor (OTFT). The IS NO3- sensor displayed a linear sensitivity range between 10-4.5 and 10-1 M (r2 = 0.9912), with a limit of detection of 2 ppm for NO3-. The Hg2+ sensor exhibited a linear correlation (r2 = 0.8806) between the change in the transfer resistance (RCT) and the increasing concentration of Hg2+. The protein PCB sensor provided a label-free method for protein detection. Finally, the OTFT demonstrated stable performance, with mobility values in the linear (μlin) and saturation (μsat) regimes of 0.0083 ± 0.0026 and 0.0237 ± 0.0079 cm2 V-1 S-1, respectively, and a threshold voltage (Vth) of -6.75 ± 3.89 V.
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Affiliation(s)
- Li-Kai Lin
- School of Materials Engineering, Neil Armstrong Hall of Engineering, Purdue University, 701 West Stadium Avenue, West Lafayette, Indiana 47907-2050, United States
- Birck Nanotechnology Center, Purdue University, 1205 W State Street, West Lafayette, Indiana 47907-2050, United States
| | - Jung-Ting Tsai
- School of Materials Engineering, Neil Armstrong Hall of Engineering, Purdue University, 701 West Stadium Avenue, West Lafayette, Indiana 47907-2050, United States
| | - Susana Díaz-Amaya
- School of Materials Engineering, Neil Armstrong Hall of Engineering, Purdue University, 701 West Stadium Avenue, West Lafayette, Indiana 47907-2050, United States
- Birck Nanotechnology Center, Purdue University, 1205 W State Street, West Lafayette, Indiana 47907-2050, United States
| | - Muhammed Ramazan Oduncu
- School of Materials Engineering, Neil Armstrong Hall of Engineering, Purdue University, 701 West Stadium Avenue, West Lafayette, Indiana 47907-2050, United States
- Birck Nanotechnology Center, Purdue University, 1205 W State Street, West Lafayette, Indiana 47907-2050, United States
| | - Yifan Zhang
- School of Materials Engineering, Neil Armstrong Hall of Engineering, Purdue University, 701 West Stadium Avenue, West Lafayette, Indiana 47907-2050, United States
| | - Peng-Yuan Huang
- School of Library and Information Studies, University of Wisconsin-Madison, Helen C. White Hall. 600 N. Park Street, Madison, Wisconsin 53706, United States
| | - Carlos Ostos
- CATALAD Research Group, Instituto de Química, Facultad de Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Calle 70 No. 52-21, Medellín 050010, Colombia
| | - Jacob P Schmelzel
- School of Electrical and Computer Engineering, Purdue University, Electrical Engineering Building, 465 Northwestern Ave., West Lafayette, Indiana 47907-2050, United States
| | - Raheleh Mohammadrahimi
- School of Materials Engineering, Neil Armstrong Hall of Engineering, Purdue University, 701 West Stadium Avenue, West Lafayette, Indiana 47907-2050, United States
| | - Pengyu Xu
- School of Materials Engineering, Neil Armstrong Hall of Engineering, Purdue University, 701 West Stadium Avenue, West Lafayette, Indiana 47907-2050, United States
| | - Ana Maria Ulloa Gomez
- School of Materials Engineering, Neil Armstrong Hall of Engineering, Purdue University, 701 West Stadium Avenue, West Lafayette, Indiana 47907-2050, United States
| | - Shoumya Nandy Shuvo
- School of Materials Engineering, Neil Armstrong Hall of Engineering, Purdue University, 701 West Stadium Avenue, West Lafayette, Indiana 47907-2050, United States
| | - Nithin Raghunathan
- Birck Nanotechnology Center, Purdue University, 1205 W State Street, West Lafayette, Indiana 47907-2050, United States
| | - Xinghang Zhang
- School of Materials Engineering, Neil Armstrong Hall of Engineering, Purdue University, 701 West Stadium Avenue, West Lafayette, Indiana 47907-2050, United States
| | - Alexander Wei
- School of Materials Engineering, Neil Armstrong Hall of Engineering, Purdue University, 701 West Stadium Avenue, West Lafayette, Indiana 47907-2050, United States
- Birck Nanotechnology Center, Purdue University, 1205 W State Street, West Lafayette, Indiana 47907-2050, United States
- Department of Chemistry, Purdue University, 560 Oval Drive, West Lafayette, Indiana 47907-2050, United States
| | - David Bahr
- School of Materials Engineering, Neil Armstrong Hall of Engineering, Purdue University, 701 West Stadium Avenue, West Lafayette, Indiana 47907-2050, United States
| | - Dimitrios Peroulis
- Birck Nanotechnology Center, Purdue University, 1205 W State Street, West Lafayette, Indiana 47907-2050, United States
- School of Electrical and Computer Engineering, Purdue University, Electrical Engineering Building, 465 Northwestern Ave., West Lafayette, Indiana 47907-2050, United States
| | - Lia A Stanciu
- School of Materials Engineering, Neil Armstrong Hall of Engineering, Purdue University, 701 West Stadium Avenue, West Lafayette, Indiana 47907-2050, United States
- Birck Nanotechnology Center, Purdue University, 1205 W State Street, West Lafayette, Indiana 47907-2050, United States
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21
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Minami T. Design of Supramolecular Sensors and Their Applications to Optical Chips and Organic Devices. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200233] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Tsuyoshi Minami
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153-8505, Japan
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22
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Fan Y, Huang Y, Linthicum W, Liu F, Beringhs AO, Dang Y, Xu Z, Chang SY, Ling J, Huey BD, Suib SL, Ma AWK, Gao PX, Lu X, Lei Y, Shaw MT, Li B. Toward Long-Term Accurate and Continuous Monitoring of Nitrate in Wastewater Using Poly(tetrafluoroethylene) (PTFE)-Solid-State Ion-Selective Electrodes (S-ISEs). ACS Sens 2020; 5:3182-3193. [PMID: 32933249 DOI: 10.1021/acssensors.0c01422] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Long-term accurate and continuous monitoring of nitrate (NO3-) concentration in wastewater and groundwater is critical for determining treatment efficiency and tracking contaminant transport. Current nitrate monitoring technologies, including colorimetric, chromatographic, biometric, and electrochemical sensors, are not feasible for continuous monitoring. This study addressed this challenge by modifying NO3- solid-state ion-selective electrodes (S-ISEs) with poly(tetrafluoroethylene) (PTFE, (C2F4)n). The PTFE-loaded S-ISE membrane polymer matrix reduces water layer formation between the membrane and electrode/solid contact, while paradoxically, the even more hydrophobic PTFE-loaded S-ISE membrane prevents bacterial attachment despite the opposite approach of hydrophilic modifications in other antifouling sensor designs. Specifically, an optimal ratio of 5% PTFE in the S-ISE polymer matrix was determined by a series of characterization tests in real wastewater. Five percent of PTFE alleviated biofouling to the sensor surface by enhancing the negative charge (-4.5 to -45.8 mV) and lowering surface roughness (Ra: 0.56 ± 0.02 nm). It simultaneously mitigated water layer formation between the membrane and electrode by increasing hydrophobicity (contact angle: 104°) and membrane adhesion and thus minimized the reading (mV) drift in the baseline sensitivity ("data drifting"). Long-term accuracy and durability of 5% PTFE-loaded NO3- S-ISEs were well demonstrated in real wastewater over 20 days, an improvement over commercial sensor longevity.
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Affiliation(s)
- Yingzheng Fan
- Department of Civil & Environmental Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Yuankai Huang
- Department of Civil & Environmental Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Will Linthicum
- Department of Materials Science & Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Fangyuan Liu
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | | | - Yanliu Dang
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Zhiheng Xu
- Department of Civil & Environmental Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Shing-Yun Chang
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
- Department of Chemical and Biomedical Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Jing Ling
- Department of Civil & Environmental Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Bryan D. Huey
- Department of Materials Science & Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Steven L. Suib
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Anson W. K. Ma
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
- Department of Chemical and Biomedical Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Pu-Xian Gao
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Xiuling Lu
- School of Pharmacy, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Yu Lei
- Department of Chemical and Biomedical Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Montgomery T. Shaw
- Institute of Materials Science, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Baikun Li
- Department of Civil & Environmental Engineering, University of Connecticut, Storrs, Connecticut 06269, United States
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23
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Nagamine K, Nomura A, Ichimura Y, Izawa R, Sasaki S, Furusawa H, Matsui H, Tokito S. Printed Organic Transistor-based Biosensors for Non-invasive Sweat Analysis. ANAL SCI 2020; 36:291-302. [PMID: 31904007 DOI: 10.2116/analsci.19r007] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Accepted: 12/25/2019] [Indexed: 08/09/2023]
Abstract
This review describes recent advances in biosensors for non-invasive human healthcare applications, especially focusing on sweat analysis, along with approaches for fabricating these biosensors based on printed electronics technology. Human sweat contains various kinds of biomarkers. The relationship between a trace amount of sweat biomarkers partially partitioned from blood and diseases has been investigated by omic analysis. Recent progress in wearable or portable biosensors has enabled periodic or continuous monitoring of some sweat biomarkers while supporting the results of the omic analysis. In this review, we particularly focused on a transistor-based biosensor that is highly sensitive in quantitatively detecting the low level of sweat biomarkers. Furthermore, we showed a new approach of flexible hybrid electronics that has been applied to advanced sweat biosensors to realize fully integrated biosensing systems wirelessly connected to a networked IoT system. These technologies are based on uniquely advanced printing techniques that will facilitate mass fabrication of high-performance biosensors at low cost for future smart healthcare.
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Affiliation(s)
- Kuniaki Nagamine
- Research Center for Organic Electronics (REOL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan.
| | - Ayako Nomura
- Research Center for Organic Electronics (REOL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan
| | - Yusuke Ichimura
- Research Center for Organic Electronics (REOL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan
| | - Ryota Izawa
- Research Center for Organic Electronics (REOL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan
| | - Shiori Sasaki
- Research Center for Organic Electronics (REOL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan
| | - Hiroyuki Furusawa
- Research Center for Organic Electronics (REOL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan
| | - Hiroyuki Matsui
- Research Center for Organic Electronics (REOL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan
| | - Shizuo Tokito
- Research Center for Organic Electronics (REOL), Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata, 992-8510, Japan.
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24
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Kubota R, Sasaki Y, Minamiki T, Minami T. Chemical Sensing Platforms Based on Organic Thin-Film Transistors Functionalized with Artificial Receptors. ACS Sens 2019; 4:2571-2587. [PMID: 31475522 DOI: 10.1021/acssensors.9b01114] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Organic thin-film transistors (OTFTs) have attracted intense attention as promising electronic devices owing to their various applications such as rollable active-matrix displays, flexible nonvolatile memories, and radiofrequency identification (RFID) tags. To further broaden the scope of the application of OTFTs, we focus on the host-guest chemistry combined with the electronic devices. Extended-gate types of OTFTs functionalized with artificial receptors were fabricated to achieve chemical sensing of targets in complete aqueous media. Organic and inorganic ions (cations and anions), neutral molecules, and proteins, which are regarded as target analytes in the field of host-guest chemistry, were electrically detected by artificial receptors. Molecular recognition phenomena on the extended-gate electrode were evaluated by several analytical methods such as photoemission yield spectroscopy in the air, contact angle goniometry, and X-ray photoelectron spectroscopy. Interestingly, the electrical responses of the OTFTs were highly sensitive to the chemical structures of the guests. Thus, the OTFTs will facilitate the selective sensing of target analytes and the understanding of chemical conversions in biological and environmental systems. Furthermore, such cross-reactive responses observed in our studies will provide some important insights into next-generation sensing systems such as OTFT arrays. We strongly believe that our approach will enable the development of new intriguing sensor platforms in the field of host-guest chemistry, analytical chemistry, and organic electronics.
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Affiliation(s)
- Riku Kubota
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153−8505, Japan
| | - Yui Sasaki
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153−8505, Japan
| | - Tsukuru Minamiki
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153−8505, Japan
| | - Tsuyoshi Minami
- Institute of Industrial Science, The University of Tokyo, 4-6-1 Komaba, Meguro-ku, Tokyo 153−8505, Japan
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25
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Wang N, Yang A, Fu Y, Li Y, Yan F. Functionalized Organic Thin Film Transistors for Biosensing. Acc Chem Res 2019; 52:277-287. [PMID: 30620566 DOI: 10.1021/acs.accounts.8b00448] [Citation(s) in RCA: 124] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The rise of organic bioelectronics efficiently bridges the gap between semiconductor devices and biological systems, leading to flexible, lightweight, and low-cost organic bioelectronic devices suitable for health or body signal monitoring. The introduction of organic semiconductors in the devices can soften the boundaries between microelectronic systems and dynamically active cells and tissues. Therefore, organic bioelectronics has attracted much attention recently due to the unique properties and promising applications. Organic thin film transistors (OTFTs), owing to their inherent capability of amplifying received signals, have emerged as one of the state-of-the-art biosensing platforms. The advantages of organic semiconductors in terms of synthetic freedom, low temperature solution processing, biocompatibility, and mechanical flexibility render OTFTs ideal transducers for wearable electronics, e-skin, and implantable devices. How to realize highly sensitive, selective, rapid, and efficient signal capture and extraction of biological recognition events is the major challenge in the design of biosensors. OTFTs are prone to converting the presence or change of target analytes into specific electrical signals even in complex biological systems. More importantly, OTFT sensors can be conveniently functionalized with chemical or biological modifications and exhibit substantially improved device sensitivity and selectivity as well as other analytical figure of merits, including calibration range, linearity, and accuracy. However, the stability and reproducibility of the organic devices need to be further improved. In this Account, we first introduce the unique features of OTFTs for bioelectronic applications. Two typical OTFT configurations, including organic electrochemical transistor (OECT) and electrolyte gated organic field effect transistor (EGOFET), are highlighted in their sensing applications mainly due to the operation of the devices in electrolytes and the combination of ionic and electronic charge transports in the devices. These devices are potentiometric transducers with low working voltages (<1 V) and high sensitivity, and are thus suitable for wearable applications with low power consumption. Second, the functionalization strategies on channel materials, electrolytes, and gate electrodes based on various modification methods and sensing mechanisms are discussed in sequence. In an OECT- or EGOFET-based biosensor, the device performance is particularly sensitive to the physical properties of the two interfaces, including channel/electrolyte and gate/electrolyte interfaces. Any change in the potential drop or capacitance of either interface can influence the channel current substantially. Therefore, the functionalization of the interfaces is critical to the sensing performance. In particular, when an electrochemically active material is modified on the interfaces, the reaction of the analyte catalyzed by the modified material can influence the interface potential and lead to a channel current response much stronger than that of a conventional electrochemical measurement. So the biosensors are much more sensitive than typical analytical methods due to the signal amplification of the transistors. Third, the processing techniques including screen printing and inkjet printing and the possibility for mass production are discussed. The applications of organic transistors in wearable electronics and healthcare monitoring systems, especially the fabric OECT-based biosensors for noninvasive detection, are presented. It is expected that the versatile organic transistors will enable various compact, flexible and disposable biosensors compatible with wearable electronics.
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Affiliation(s)
- Naixiang Wang
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong
| | - Anneng Yang
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong
| | - Ying Fu
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong
| | - Yuanzhe Li
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong
| | - Feng Yan
- Department of Applied Physics, The Hong Kong Polytechnic University, Hong Kong
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26
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Ilea A, Andrei V, Feurdean CN, Băbțan AM, Petrescu NB, Câmpian RS, Boșca AB, Ciui B, Tertiș M, Săndulescu R, Cristea C. Saliva, a Magic Biofluid Available for Multilevel Assessment and a Mirror of General Health-A Systematic Review. BIOSENSORS-BASEL 2019; 9:bios9010027. [PMID: 30769890 PMCID: PMC6468816 DOI: 10.3390/bios9010027] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 02/01/2019] [Accepted: 02/09/2019] [Indexed: 02/07/2023]
Abstract
Background: Saliva has been recently proposed as an alternative to classic biofluid analyses due to both availability and reliability regarding the evaluation of various biomarkers. Biosensors have been designed for the assessment of a wide spectrum of compounds, aiding in the screening, diagnosis, and monitoring of pathologies and treatment efficiency. This literature review aims to present the development in the biosensors research and their utility using salivary assessment. Methods: a comprehensive literature search has been conducted in the PubMed database, using the keywords “saliva” and “sensor”. A two-step paper selection algorithm was devised and applied. Results: The 49 papers selected for the present review focused on assessing the salivary biomarkers used in general diseases, oral pathologies, and pharmacology. The biosensors proved to be reliable tools for measuring the salivary levels of biochemical metabolic compounds such as glucose, proteinases and proteins, heavy metals and various chemical compounds, microorganisms, oncology markers, drugs, and neurotransmitters. Conclusions: Saliva is a biofluid with a significant clinical applicability for the evaluation and monitoring of a patient’s general health. Biosensors designed for assessing a wide range of salivary biomarkers are emerging as promising diagnostic or screening tools for improving the patients’ quality of life.
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Affiliation(s)
- Aranka Ilea
- Iuliu Haţieganu" University of Medicine and Pharmacy Cluj-Napoca, Department of Oral Rehabilitation, Oral Health and Dental Office Management, Faculty of Dentistry, 400012 Cluj-Napoca, Romania.
| | - Vlad Andrei
- DMD, Rezident doctor in Periodontology, Clinical County Hospital, 540136 Târgu Mureș, Romania.
| | - Claudia Nicoleta Feurdean
- Iuliu Haţieganu" University of Medicine and Pharmacy Cluj-Napoca, Department of Oral Rehabilitation, Oral Health and Dental Office Management, Faculty of Dentistry, 400012 Cluj-Napoca, Romania.
| | - Anida-Maria Băbțan
- Iuliu Haţieganu" University of Medicine and Pharmacy Cluj-Napoca, Department of Oral Rehabilitation, Oral Health and Dental Office Management, Faculty of Dentistry, 400012 Cluj-Napoca, Romania.
| | - Nausica Bianca Petrescu
- Iuliu Haţieganu" University of Medicine and Pharmacy Cluj-Napoca, Department of Oral Rehabilitation, Oral Health and Dental Office Management, Faculty of Dentistry, 400012 Cluj-Napoca, Romania.
| | - Radu Septimiu Câmpian
- Iuliu Haţieganu" University of Medicine and Pharmacy Cluj-Napoca, Department of Oral Rehabilitation, Oral Health and Dental Office Management, Faculty of Dentistry, 400012 Cluj-Napoca, Romania.
| | - Adina Bianca Boșca
- Iuliu Haţieganu" University of Medicine and Pharmacy Cluj-Napoca, Department of Histology, Faculty of Medicine, 400349 Cluj, Romania.
| | - Bianca Ciui
- Iuliu Haţieganu" University of Medicine and Pharmacy Cluj-Napoca, Department of Analytical Chemistry, Faculty of Pharmacy, 400349 Cluj, Romania.
| | - Mihaela Tertiș
- Iuliu Haţieganu" University of Medicine and Pharmacy Cluj-Napoca, Department of Analytical Chemistry, Faculty of Pharmacy, 400349 Cluj, Romania.
| | - Robert Săndulescu
- Iuliu Haţieganu" University of Medicine and Pharmacy Cluj-Napoca, Department of Analytical Chemistry, Faculty of Pharmacy, 400349 Cluj, Romania.
| | - Cecilia Cristea
- Iuliu Haţieganu" University of Medicine and Pharmacy Cluj-Napoca, Department of Analytical Chemistry, Faculty of Pharmacy, 400349 Cluj, Romania.
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27
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Surya SG, Raval HN, Ahmad R, Sonar P, Salama KN, Rao V. Organic field effect transistors (OFETs) in environmental sensing and health monitoring: A review. Trends Analyt Chem 2019. [DOI: 10.1016/j.trac.2018.11.027] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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28
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MINAMIKI T, TOKITO S, MINAMI T. Fabrication of a Flexible Biosensor Based on an Organic Field-effect Transistor for Lactate Detection. ANAL SCI 2019; 35:103-106. [DOI: 10.2116/analsci.18sdn02] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Tsukuru MINAMIKI
- Institute of Industrial Science, The University of Tokyo
- Biomedical Research Institute, National Institute of Advanced Industrial Science and Technology (AIST)
| | - Shizuo TOKITO
- Research Center for Organic Electronics (ROEL), Yamagata University
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29
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Li H, Shi W, Song J, Jang HJ, Dailey J, Yu J, Katz HE. Chemical and Biomolecule Sensing with Organic Field-Effect Transistors. Chem Rev 2018; 119:3-35. [DOI: 10.1021/acs.chemrev.8b00016] [Citation(s) in RCA: 223] [Impact Index Per Article: 37.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Hui Li
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Wei Shi
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054, People’s Republic of China
| | - Jian Song
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Hyun-June Jang
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Jennifer Dailey
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Junsheng Yu
- State Key Laboratory of Electronic Thin Films and Integrated Devices, School of Optoelectronic Information, University of Electronic Science and Technology of China, Chengdu 610054, People’s Republic of China
| | - Howard E. Katz
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
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30
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MINAMI T, MINAMIKI T, SASAKI Y. Development of Enzymatic Sensors Based on Extended-gate-type Organic Field-effect Transistors. ELECTROCHEMISTRY 2018. [DOI: 10.5796/electrochemistry.18-6-e2672] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Affiliation(s)
| | | | - Yui SASAKI
- Institute of Industrial Science, The University of Tokyo
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31
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Mano T, Nagamine K, Ichimura Y, Shiwaku R, Furusawa H, Matsui H, Kumaki D, Tokito S. Printed Organic Transistor‐Based Enzyme Sensor for Continuous Glucose Monitoring in Wearable Healthcare Applications. ChemElectroChem 2018. [DOI: 10.1002/celc.201801129] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Taisei Mano
- Research Center for Organic Electronics (ROEL) Yamagata University 4-3-16, Jonan, Yonezawa Yamagata 992-8510 Japan
| | - Kuniaki Nagamine
- Research Center for Organic Electronics (ROEL) Yamagata University 4-3-16, Jonan, Yonezawa Yamagata 992-8510 Japan
| | - Yusuke Ichimura
- Research Center for Organic Electronics (ROEL) Yamagata University 4-3-16, Jonan, Yonezawa Yamagata 992-8510 Japan
| | - Rei Shiwaku
- Research Center for Organic Electronics (ROEL) Yamagata University 4-3-16, Jonan, Yonezawa Yamagata 992-8510 Japan
| | - Hiroyuki Furusawa
- Graduate School of Science and Engineering Yamagata University 4-3-16, Jonan, Yonezawa Yamagata 992-8510 Japan
| | - Hiroyuki Matsui
- Research Center for Organic Electronics (ROEL) Yamagata University 4-3-16, Jonan, Yonezawa Yamagata 992-8510 Japan
| | - Daisuke Kumaki
- Research Center for Organic Electronics (ROEL) Yamagata University 4-3-16, Jonan, Yonezawa Yamagata 992-8510 Japan
| | - Shizuo Tokito
- Research Center for Organic Electronics (ROEL) Yamagata University 4-3-16, Jonan, Yonezawa Yamagata 992-8510 Japan
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32
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Ji X, Zhou P, Zhong L, Xu A, Tsang ACO, Chan PKL. Smart Surgical Catheter for C-Reactive Protein Sensing Based on an Imperceptible Organic Transistor. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2018; 5:1701053. [PMID: 29938182 PMCID: PMC6010781 DOI: 10.1002/advs.201701053] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 03/29/2018] [Indexed: 05/25/2023]
Abstract
Organic field-effect transistors (OFETs)-based sensors have a great potential to be integrated with the next generation smart surgical tools for monitoring different real-time signals during surgery. However, allowing ultraflexible OFETs to have compatibility with standard medical sterilization procedures remains challenging. A novel capsule-like OFET structure is demonstrated by utilizing the fluoropolymer CYTOP to serve both encapsulation and peeling-off enhancement purposes. By adapting a thermally stable organic semiconductor, 2,10-diphenylbis[1]benzothieno[2,3-d;2',3'-d']naphtho[2,3-b;6,7-b']dithiophene (DPh-BBTNDT), these devices show excellent stability in their electrical performance after sterilizing under boiling water and 100 °C-saturated steam for 30 min. The ultrathin thickness (630 nm) enables the device to have superb mechanical flexibility with smallest bending radius down to 1.5 µm, which is essential for application on the highly tortuous medical catheter inside the human body. By immobilizing anti-human C-reactive protein (CRP) (an inflammation biomarker) monoclonal antibody on an extended gate of the OFET, a sensitivity for detecting CRP antigen down to 1 µg mL-1 can be achieved. An ecofriendly water floatation method realized by employing the wettability difference between CYTOP and polyacrylonitrile (PAN) can be used to transfer the device on a ventricular catheter, which successfully distinguishes an inflammatory patient from a healthy one.
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Affiliation(s)
- Xudong Ji
- Department of Mechanical EngineeringThe University of Hong KongHong Kong
| | - Pengcheng Zhou
- State Key Laboratory of Pharmaceutical BiotechnologyThe University of Hong KongHong Kong
- Department of MedicineThe University of Hong KongHong Kong
| | - Ling Zhong
- State Key Laboratory of Pharmaceutical BiotechnologyThe University of Hong KongHong Kong
- Department of MedicineThe University of Hong KongHong Kong
| | - Aimin Xu
- State Key Laboratory of Pharmaceutical BiotechnologyThe University of Hong KongHong Kong
- Department of MedicineThe University of Hong KongHong Kong
- China Department of Pharmacology and PharmacyThe University of Hong KongHong Kong
| | | | - Paddy K. L. Chan
- Department of Mechanical EngineeringThe University of Hong KongHong Kong
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33
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Wu X, Zhou J, Huang J. Integration of Biomaterials into Sensors Based on Organic Thin-Film Transistors. Macromol Rapid Commun 2018; 39:e1800084. [DOI: 10.1002/marc.201800084] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 04/09/2018] [Indexed: 12/22/2022]
Affiliation(s)
- Xiaohan Wu
- Interdisciplinary Materials Research Center; School of Materials Science and Engineering; Tongji University; Shanghai 201804 P. R. China
| | - Jiachen Zhou
- Interdisciplinary Materials Research Center; School of Materials Science and Engineering; Tongji University; Shanghai 201804 P. R. China
| | - Jia Huang
- Interdisciplinary Materials Research Center; School of Materials Science and Engineering; Tongji University; Shanghai 201804 P. R. China
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34
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Jang HJ, Lee T, Song J, Russell L, Li H, Dailey J, Searson PC, Katz HE. Electronic Cortisol Detection Using an Antibody-Embedded Polymer Coupled to a Field-Effect Transistor. ACS APPLIED MATERIALS & INTERFACES 2018; 10:16233-16237. [PMID: 29701946 PMCID: PMC6026499 DOI: 10.1021/acsami.7b18855] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2023]
Abstract
A field-effect transistor-based cortisol sensor was demonstrated in physiological conditions. An antibody-embedded polymer on the remote gate was proposed to overcome the Debye length issue (λD). The sensing membrane was made by linking poly(styrene- co-methacrylic acid) (PSMA) with anticortisol before coating the modified polymer on the remote gate. The embedded receptor in the polymer showed sensitivity from 10 fg/mL to 10 ng/mL for cortisol and a limit of detection (LOD) of 1 pg/mL in 1× PBS where λD is 0.2 nm. A LOD of 1 ng/mL was shown in lightly buffered artificial sweat. Finally, a sandwich ELISA confirmed the antibody binding activity of antibody-embedded PSMA.
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Affiliation(s)
- Hyun-June Jang
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218-2608, United States
| | - Taein Lee
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218-2608, United States
| | - Jian Song
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218-2608, United States
| | - Luisa Russell
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218-2608, United States
| | - Hui Li
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218-2608, United States
| | - Jennifer Dailey
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218-2608, United States
| | - Peter C. Searson
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218-2608, United States
| | - Howard E. Katz
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218-2608, United States
- Corresponding Author: (H.E.K.)
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35
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Ahmad R, Mahmoudi T, Ahn MS, Hahn YB. Recent advances in nanowires-based field-effect transistors for biological sensor applications. Biosens Bioelectron 2018; 100:312-325. [PMID: 28942344 PMCID: PMC7126762 DOI: 10.1016/j.bios.2017.09.024] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Revised: 09/08/2017] [Accepted: 09/14/2017] [Indexed: 12/29/2022]
Abstract
Nanowires (NWs)-based field-effect transistors (FETs) have attracted considerable interest to develop innovative biosensors using NWs of different materials (i.e. semiconductors, polymers, etc.). NWs-based FETs provide significant advantages over the other bulk or non-NWs nanomaterials-based FETs. As the building blocks for FET-based biosensors, one-dimensional NWs offer excellent surface-to-volume ratio and are more suitable and sensitive for sensing applications. During the past decade, FET-based biosensors are smartly designed and used due to their great specificity, sensitivity, and high selectivity. Additionally, they have the advantage of low weight, low cost of mass production, small size and compatible with commercial planar processes for large-scale circuitry. In this respect, we summarize the recent advances of NWs-based FET biosensors for different biomolecule detection i.e. glucose, cholesterol, uric acid, urea, hormone, proteins, nucleotide, biomarkers, etc. A comparative sensing performance, present challenges, and future prospects of NWs-based FET biosensors are discussed in detail.
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Affiliation(s)
- Rafiq Ahmad
- School of Semiconductor and Chemical Engineering, Nanomaterials Processing Research Center, Chonbuk National University, 567 Baekjedaero, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Republic of Korea.
| | - Tahmineh Mahmoudi
- School of Semiconductor and Chemical Engineering, Nanomaterials Processing Research Center, Chonbuk National University, 567 Baekjedaero, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Republic of Korea
| | - Min-Sang Ahn
- School of Semiconductor and Chemical Engineering, Nanomaterials Processing Research Center, Chonbuk National University, 567 Baekjedaero, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Republic of Korea
| | - Yoon-Bong Hahn
- School of Semiconductor and Chemical Engineering, Nanomaterials Processing Research Center, Chonbuk National University, 567 Baekjedaero, Deokjin-gu, Jeonju-si, Jeollabuk-do 54896, Republic of Korea.
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36
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Song J, Dailey J, Li H, Jang HJ, Zhang P, Wang JTH, Everett AD, Katz HE. Extended Solution Gate OFET-based Biosensor for Label-free Glial Fibrillary Acidic Protein Detection with Polyethylene Glycol-Containing Bioreceptor Layer. ADVANCED FUNCTIONAL MATERIALS 2017; 27:1606506. [PMID: 29606930 PMCID: PMC5873605 DOI: 10.1002/adfm.201606506] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
A novel organic field effect transistor (OFET) -based biosensor is described for label-free glial fibrillary acidic protein (GFAP) detection. We report the first use of an extended solution gate structure where the sensing area and the organic semiconductor are separated, and a reference electrode is not needed. Different molecular weight polyethylene glycols (PEGs) are mixed into the bio-receptor layer to help extend the Debye screening length. The drain current change was significantly increased with the help of higher molecular weight PEGs, as they are known to reduce the dielectric constant. We also investigated the sensing performance under different gate voltage (Vg). The sensitivity increased after we decreased Vg from -5 V to -2 V, because the lower Vg is much closer to the OFET threshold voltage and the influence of attached negatively charged proteins become more apparent. Finally, the selectivity experiments toward different interferents were performed. The stability and selectivity are promising for clinical applications.
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Affiliation(s)
- Jian Song
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Jennifer Dailey
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Hui Li
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Hyun-June Jang
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Pengfei Zhang
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States; Department of Biomedical Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Jeff Tza-Huei Wang
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States; Department of Biomedical Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Allen D Everett
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States; Johns Hopkins Medical Institutes, Children's Center, 1800 Orleans Street, Baltimore, Maryland 21287, United States
| | - Howard E Katz
- Department of Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
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37
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Ahmad R, Bhat KS, Ahn MS, Hahn YB. Fabrication of a robust and highly sensitive nitrate biosensor based on directly grown zinc oxide nanorods on a silver electrode. NEW J CHEM 2017. [DOI: 10.1039/c7nj02526b] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This article reports the fabrication of a robust and highly sensitive nitrate biosensor based on directly-grown ZnO NRs on an electrode surface.
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Affiliation(s)
- Rafiq Ahmad
- School of Semiconductor and Chemical Engineering
- Nanomaterials Processing
- Research Center
- Chonbuk National University
- Jeonju-si
| | - Kiesar Sideeq Bhat
- School of Semiconductor and Chemical Engineering
- Nanomaterials Processing
- Research Center
- Chonbuk National University
- Jeonju-si
| | - Min-Sang Ahn
- School of Semiconductor and Chemical Engineering
- Nanomaterials Processing
- Research Center
- Chonbuk National University
- Jeonju-si
| | - Yoon-Bong Hahn
- School of Semiconductor and Chemical Engineering
- Nanomaterials Processing
- Research Center
- Chonbuk National University
- Jeonju-si
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38
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Powell JA, Venkatakrishnan K, Tan B. Hybridized enhancement of the SERS detection of chemical and bio-marker molecules through Au nanosphere ornamentation of hybrid amorphous/crystalline Si nanoweb nanostructure biochip devices. J Mater Chem B 2016; 4:5713-5728. [DOI: 10.1039/c6tb01301e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
We report the fabrication of hybrid Si SERS nanobiosensor biochip devices.
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Affiliation(s)
- Jeffery Alexander Powell
- Ultrashort Laser Nanomanufacturing Research Facility
- Department of Mechanical and Industrial Engineering
- Ryerson University
- Toronto
- Canada, M5B 2K3
| | - Krishnan Venkatakrishnan
- Ultrashort Laser Nanomanufacturing Research Facility
- Department of Mechanical and Industrial Engineering
- Ryerson University
- Toronto
- Canada, M5B 2K3
| | - Bo Tan
- Nano-imaging Lab
- Department of Aerospace Engineering
- Ryerson University
- Toronto
- Canada, M5B 2K3
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39
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MINAMI T. Exploratory Research of Chemical Sensors Based on Organic Transistors with Self-Assembled Monolayer-Functionalized Electrodes. KOBUNSHI RONBUNSHU 2016. [DOI: 10.1295/koron.2016-0027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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