51
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Sultan A, Ahmad S, Anwer T, Mohammad F. Binary doped polypyrrole and polypyrrole/boron nitride nanocomposites: preparation, characterization and application in detection of liquefied petroleum gas leaks. RSC Adv 2015. [DOI: 10.1039/c5ra21173e] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
We report an electrical conductivity based rapid response liquefied petroleum gas (LPG) sensor using binary doped polypyrrole and polypyrrole/boron nitride (PPy/BN) nanocomposites as the conductive material.
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Affiliation(s)
- Adil Sultan
- Department of Applied Chemistry
- Faculty of Engineering and Technology
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Sharique Ahmad
- Department of Applied Chemistry
- Faculty of Engineering and Technology
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Tarique Anwer
- Department of Applied Chemistry
- Faculty of Engineering and Technology
- Aligarh Muslim University
- Aligarh-202002
- India
| | - Faiz Mohammad
- Department of Applied Chemistry
- Faculty of Engineering and Technology
- Aligarh Muslim University
- Aligarh-202002
- India
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52
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Warriner K, Reddy SM, Namvar A, Neethirajan S. Developments in nanoparticles for use in biosensors to assess food safety and quality. Trends Food Sci Technol 2014. [DOI: 10.1016/j.tifs.2014.07.008] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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53
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Abstract
The world is filled with widely varying chemical, physical, and biological stimuli. Over millennia, organisms have refined their senses to cope with these diverse stimuli, becoming virtuosos in differentiating closely related antigens, handling extremes in concentration, resetting the spent sensing mechanisms, and processing the multiple data streams being generated. Nature successfully deals with both repeating and new stimuli, demonstrating great adaptability when confronted with the latter. Interestingly, nature accomplishes these feats using a fairly simple toolbox. The sensors community continues to draw inspiration from nature's example: just look at the antibodies used as biosensor capture agents or the neural networks that process multivariate data streams. Indeed, many successful sensors have been built by simply mimicking natural systems. However, some of the most exciting breakthroughs occur when the community moves beyond mimicking nature and learns to use nature's tools in innovative ways.
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Affiliation(s)
- Shawn P Mulvaney
- Chemistry Division, U.S. Naval Research Laboratory , Washington, DC 20375, United States
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54
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Song HS, Jin HJ, Ahn SR, Kim D, Lee SH, Kim UK, Simons CT, Hong S, Park TH. Bioelectronic tongue using heterodimeric human taste receptor for the discrimination of sweeteners with human-like performance. ACS NANO 2014; 8:9781-9789. [PMID: 25126667 DOI: 10.1021/nn502926x] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The sense of taste helps humans to obtain information and form a picture of the world by recognizing chemicals in their environments. Over the past decade, large advances have been made in understanding the mechanisms of taste detection and mimicking its capability using artificial sensor devices. However, the detection capability of previous artificial taste sensors has been far inferior to that of animal tongues, in terms of its sensitivity and selectivity. Herein, we developed a bioelectronic tongue using heterodimeric human sweet taste receptors for the detection and discrimination of sweeteners with human-like performance, where single-walled carbon nanotube field-effect transistors were functionalized with nanovesicles containing human sweet taste receptors and used to detect the binding of sweeteners to the taste receptors. The receptors are heterodimeric G-protein-coupled receptors (GPCRs) composed of human taste receptor type 1 member 2 (hTAS1R2) and human taste receptor type 1 member 3 (hTAS1R3), which have multiple binding sites and allow a human tongue-like broad selectivity for the detection of sweeteners. This nanovesicle-based bioelectronic tongue can be a powerful tool for the detection of sweeteners as an alternative to labor-intensive and time-consuming cell-based assays and the sensory evaluation panels used in the food and beverage industry. Furthermore, this study also allows the artificial sensor to exam the functional activity of dimeric GPCRs.
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Affiliation(s)
- Hyun Seok Song
- School of Chemical and Biological Engineering, Bio-MAX Institute, ‡Department of Physics and Astronomy, and Institute of Applied Physics, and §Department of Biophysics and Chemical Biology, Seoul National University , Seoul, 151-747, Republic of Korea
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55
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Functionalized Amphipols: A Versatile Toolbox Suitable for Applications of Membrane Proteins in Synthetic Biology. J Membr Biol 2014; 247:815-26. [DOI: 10.1007/s00232-014-9663-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2014] [Accepted: 03/27/2014] [Indexed: 10/25/2022]
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56
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Bai Y, Xu Y, Wang J, Gao M, Wang J. Interface effect on the electropolymerized polypyrrole films with hollow micro/nanohorn arrays. ACS APPLIED MATERIALS & INTERFACES 2014; 6:4693-4704. [PMID: 24611811 DOI: 10.1021/am500513u] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Polypyrrole (PPy) films with hollow micro/nanohorn arrays were controllably synthesized in p-toluenesulfonate aqueous solutions by template-free electrochemical methods. The micelles which consist of pyrrole monomers and the surfactants provided the soft templates during the polymerization process. The polymerization potential and pH value of the solutions cooperatively influenced the shape of the micelles at the substrate/electrolyte interface and further controlled the morphologies of PPy films. PPy grew along the soft templates during the high potential periods of a pulse potentiostatic (PPS) method, while the pH value and the low potential were varied to modulate the shape of the soft templates. It has been shown to be most appropriate to fabricate hollow micro/nanohorn PPy films with the highest electrical conductivity (190 S cm(-1)) via PPS at pH ∼1.5. A diagram was also introduced in order to illustrate the polymerization potential and pH value dependence of nanohorn PPy morphologies. This work proposed a potential method to the in situ growth of conducting polymers with high conductivity and high specific surface area.
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Affiliation(s)
- Yang Bai
- Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center of Dielectric Research, Xi'an Jiaotong University , Xi'an 710049, Shaanxi, P.R. China
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57
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Park SJ, Song HS, Kwon OS, Chung JH, Lee SH, An JH, Ahn SR, Lee JE, Yoon H, Park TH, Jang J. Human dopamine receptor nanovesicles for gate-potential modulators in high-performance field-effect transistor biosensors. Sci Rep 2014; 4:4342. [PMID: 24614248 PMCID: PMC3949245 DOI: 10.1038/srep04342] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Accepted: 02/24/2014] [Indexed: 11/24/2022] Open
Abstract
The development of molecular detection that allows rapid responses with high sensitivity and selectivity remains challenging. Herein, we demonstrate the strategy of novel bio-nanotechnology to successfully fabricate high-performance dopamine (DA) biosensor using DA Receptor-containing uniform-particle-shaped Nanovesicles-immobilized Carboxylated poly(3,4-ethylenedioxythiophene) (CPEDOT) NTs (DRNCNs). DA molecules are commonly associated with serious diseases, such as Parkinson's and Alzheimer's diseases. For the first time, nanovesicles containing a human DA receptor D1 (hDRD1) were successfully constructed from HEK-293 cells, stably expressing hDRD1. The nanovesicles containing hDRD1 as gate-potential modulator on the conducting polymer (CP) nanomaterial transistors provided high-performance responses to DA molecule owing to their uniform, monodispersive morphologies and outstanding discrimination ability. Specifically, the DRNCNs were integrated into a liquid-ion gated field-effect transistor (FET) system via immobilization and attachment processes, leading to high sensitivity and excellent selectivity toward DA in liquid state. Unprecedentedly, the minimum detectable level (MDL) from the field-induced DA responses was as low as 10 pM in real- time, which is 10 times more sensitive than that of previously reported CP based-DA biosensors. Moreover, the FET-type DRNCN biosensor had a rapid response time (<1 s) and showed excellent selectivity in human serum.
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Affiliation(s)
- Seon Joo Park
- 1] World Class University program of Chemical Convergence for Energy & Environment, School of Chemical and Biological Engineering, Seoul National University, 151-742, Korea [2]
| | - Hyun Seok Song
- 1] School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Korea [2] Harvard-MIT Division of Health Sciences and Technology, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts 02139, USA [3]
| | - Oh Seok Kwon
- 1] World Class University program of Chemical Convergence for Energy & Environment, School of Chemical and Biological Engineering, Seoul National University, 151-742, Korea [2] Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, USA
| | - Ji Hyun Chung
- School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Korea
| | - Seung Hwan Lee
- School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Korea
| | - Ji Hyun An
- World Class University program of Chemical Convergence for Energy & Environment, School of Chemical and Biological Engineering, Seoul National University, 151-742, Korea
| | - Sae Ryun Ahn
- School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Korea
| | - Ji Eun Lee
- Department of Polymer Engineering, Chonnam National University, Gwangju 500-757, Korea
| | - Hyeonseok Yoon
- Department of Polymer Engineering, Chonnam National University, Gwangju 500-757, Korea
| | - Tai Hyun Park
- 1] School of Chemical and Biological Engineering, Seoul National University, Seoul 151-742, Korea [2] Advanced Institutes of Convergence Technology, Suwon 443-270, Korea
| | - Jyongsik Jang
- World Class University program of Chemical Convergence for Energy & Environment, School of Chemical and Biological Engineering, Seoul National University, 151-742, Korea
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58
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Zhang W, Patel K, Schexnider A, Banu S, Radadia AD. Nanostructuring of biosensing electrodes with nanodiamonds for antibody immobilization. ACS NANO 2014; 8:1419-28. [PMID: 24397797 PMCID: PMC4004312 DOI: 10.1021/nn405240g] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
While chemical vapor deposition of diamond films is currently cost prohibitive for biosensor construction, in this paper, we show that sonication-assisted nanostructuring of biosensing electrodes with nanodiamonds (NDs) allows harnessing the hydrolytic stability of the diamond biofunctionalization chemistry for real-time continuous sensing, while improving the detector sensitivity and stability. We find that the higher surface coverages were important for improved bacterial capture and can be achieved through proper choice of solvent, ND concentration, and seeding time. A mixture of methanol and dimethyl sulfoxide provides the highest surface coverage (33.6 ± 3.4%) for the NDs with positive zeta-potential, compared to dilutions of dimethyl sulfoxide with acetone, ethanol, isopropyl alcohol, or water. Through impedance spectroscopy of ND-seeded interdigitated electrodes (IDEs), we found that the ND seeds serve as electrically conductive islands only a few nanometers apart. Also we show that the seeded NDs are amply hydrogenated to be decorated with antibodies using the UV-alkene chemistry, and higher bacterial captures can be obtained compared to our previously reported work with diamond films. When sensing bacteria from 10(6) cfu/mL E. coli O157:H7, the resistance to charge transfer at the IDEs decreased by ∼ 38.8%, which is nearly 1.5 times better than that reported previously using redox probes. Further in the case of 10(8) cfu/mL E. coli O157:H7, the charge transfer resistance changed by ∼ 46%, which is similar to the magnitude of improvement reported using magnetic nanoparticle-based sample enrichment prior to impedance detection. Thus ND seeding allows impedance biosensing in low conductivity solutions with competitive sensitivity.
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59
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Huang W, Besar K, LeCover R, Dulloor P, Sinha J, Martínez Hardigree JF, Pick C, Swavola J, Everett AD, Frechette J, Bevan M, Katz HE. Label-free brain injury biomarker detection based on highly sensitive large area organic thin film transistor with hybrid coupling layer. Chem Sci 2014. [DOI: 10.1039/c3sc52638k] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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60
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Park JW, Park SJ, Kwon OS, Lee C, Jang J. High-performance Hg2+ FET-type sensors based on reduced graphene oxide–polyfuran nanohybrids. Analyst 2014; 139:3852-5. [DOI: 10.1039/c4an00403e] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new type of field-effect transistor (FET) sensor, based on reduced graphene oxide (rGO)–polyfuran (PF) nanohybrids, was strategically developed.
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Affiliation(s)
- Jin Wook Park
- World Class University (WCU) Program of Chemical Convergence for Energy & Environment (C2E2)
- School of Chemical and Biological Engineering
- College of Engineering
- Seoul National University (SNU)
- Seoul, Korea
| | - Seon Joo Park
- World Class University (WCU) Program of Chemical Convergence for Energy & Environment (C2E2)
- School of Chemical and Biological Engineering
- College of Engineering
- Seoul National University (SNU)
- Seoul, Korea
| | - Oh Seok Kwon
- Department of Chemical and Environmental Engineering
- School of Engineering and Applied Science
- Yale University
- New Haven, USA
| | - Choonghyen Lee
- World Class University (WCU) Program of Chemical Convergence for Energy & Environment (C2E2)
- School of Chemical and Biological Engineering
- College of Engineering
- Seoul National University (SNU)
- Seoul, Korea
| | - Jyongsik Jang
- World Class University (WCU) Program of Chemical Convergence for Energy & Environment (C2E2)
- School of Chemical and Biological Engineering
- College of Engineering
- Seoul National University (SNU)
- Seoul, Korea
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61
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An JH, Park SJ, Kwon OS, Bae J, Jang J. High-performance flexible graphene aptasensor for mercury detection in mussels. ACS NANO 2013; 7:10563-71. [PMID: 24279823 DOI: 10.1021/nn402702w] [Citation(s) in RCA: 125] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
Mercury (Hg) is highly toxic but has been widely used for numerous domestic applications, including thermometers and batteries, for decades, which has led to fatal outcomes due to its accumulation in the human body. Although many types of mercury sensors have been developed to protect the users from Hg, few methodologies exist to analyze Hg(2+) ions in low concentrations in real world samples. Herein, we describe the fabrication and characterization of liquid-ion gated field-effect transistor (FET)-type flexible graphene aptasensor with high sensitivity and selectivity for Hg. The field-induced responses from the graphene aptasensor had excellent sensing performance, and Hg(2+) ions with very low concentration of 10 pM could be detected, which is 2-3 orders of magnitude more sensitive than previously reported mercury sensors using electrochemical systems. Moreover, the aptasensor showed a highly specific response to Hg(2+) ions in mixed solutions. The flexible graphene aptasensor showed a very rapid response, providing a signal in less than 1 s when the Hg(2+) ion concentration was altered. Specificity to Hg(2+) ions was demonstrated in real world samples (in this case samples derived from mussels). The aptasensor was fabricated by transferring chemical vapor deposition (CVD)-grown graphene onto a transparent flexible substrate, and the structure displayed excellent mechanical durability and flexiblility. This graphene-based aptasensor has potential for detecting Hg exposure in human and in the environment.
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Affiliation(s)
- Ji Hyun An
- World Class University (WCU) Program of Chemical Convergence for Energy & Environment (C2E2), School of Chemical and Biological Engineering, Seoul National University , Seoul 151-742, Korea
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62
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Lee JS, Shin DH, Jun J, Jang J. Multidimensional polypyrrole/iron oxyhydroxide hybrid nanoparticles for chemical nerve gas agent sensing application. ACS NANO 2013; 7:10139-10147. [PMID: 24152036 DOI: 10.1021/nn404353w] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Multidimensional FeOOH nanoneedle-decorated hybrid polypyrrole nanoparticles (PFFs) were fabricated using dual-nozzle electrospray and heat stirring process. To decorate metal oxide nanoneedles on the polypyrrole (PPy) surface, metal oxide particle-decorated PPys (E_PPy) were fabricated as starting materials. The E_PPy particles were prepared by dual-nozzle electrospray because ferric ions (Fe(3+)) dispersed on the surface reacted with hydroxide (OH(-)) ions in the collector solution without aggregation of each particles. Multidimensional hybrid PFFs with maximized surface area were then formed by heat stirring reaction in the aqueous metal precursor contained solutions. The decoration morphology of the metal oxide nanoneedles could be controlled by precursor concentration in the aqueous solution. These multidimensional hybrid PPFs were applied to nerve gas agent (DMMP) chemical sensor at room temperature with excellent sensitivity. The minimum detectable level (MDL) of PFFs was as low as 0.1 ppb, which is higher than that for a chemical sensor based on hybrid materials. This is because the metal oxide nanoneedles increase surface area and affinity to DMMP vapor.
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Affiliation(s)
- Jun Seop Lee
- World Class University (WCU) Program of Chemical Convergence for Energy and Environment (C2E2), School of Chemical and Biological Engineering, College of Engineering, Seoul National University (SNU) , 599 Gwanangno, Gwanak-gu, Seoul, 151-742 Korea
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63
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Current Trends in Sensors Based on Conducting Polymer Nanomaterials. NANOMATERIALS 2013; 3:524-549. [PMID: 28348348 PMCID: PMC5304658 DOI: 10.3390/nano3030524] [Citation(s) in RCA: 131] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2013] [Revised: 08/15/2013] [Accepted: 08/16/2013] [Indexed: 12/03/2022]
Abstract
Conducting polymers represent an important class of functional organic materials for next-generation electronic and optical devices. Advances in nanotechnology allow for the fabrication of various conducting polymer nanomaterials through synthesis methods such as solid-phase template synthesis, molecular template synthesis, and template-free synthesis. Nanostructured conducting polymers featuring high surface area, small dimensions, and unique physical properties have been widely used to build various sensor devices. Many remarkable examples have been reported over the past decade. The enhanced sensitivity of conducting polymer nanomaterials toward various chemical/biological species and external stimuli has made them ideal candidates for incorporation into the design of sensors. However, the selectivity and stability still leave room for improvement.
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64
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Oh WK, Kwon OS, Jang J. Conducting Polymer Nanomaterials for Biomedical Applications: Cellular Interfacing and Biosensing. POLYM REV 2013. [DOI: 10.1080/15583724.2013.805771] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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