1
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Han J, Lee WH, Park J, Jin H, Cho YH, Yu S, Li L, Lee J, Woo G, Kim T, Kim YS. Lateral Electronic Junction of a Single Ultrathin Silicon Induced by Interfacial Dipole of Self-Assembled Monolayer. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024:e2403970. [PMID: 39248337 DOI: 10.1002/advs.202403970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Revised: 07/29/2024] [Indexed: 09/10/2024]
Abstract
Interface engineering is pivotal for enhancing the performance and stability of devices with layered structures, including solar cells, electronic devices, and electrochemical systems. Incorporating the interfacial dipole between the bulk layers effectively modulates the energy level difference at the interface and does not significantly influence adjacent layers overall. However, interfaces can drastically affect adjoining layers in ultrathin devices, which are essential for next-generation electronics with high integrity, excellent performance, and low power consumption. In particular, the interfacial effect is pronounced in ultrathin semiconductors, which have a weak electric field screening effect. Herein, the substantial interfacial impact on the ultrathin silicon is shown, the p- to n-type inversion of the semiconductor solely through the deposition of a self-assembled monolayer (SAM) without external bias. The effects of SAMs with different interfacial dipoles are investigated by using Hall measurement and surface analytic techniques, such as UPS, XPS, and KPFM. Furthermore, the lateral electronic junction of the ultrathin silicon is engineered by the regioselective deposition of SAMs with opposite dipoles, and the device exhibits rectification behavior. When the interfacial dipole of SAM is manipulated, the rectification ratio changes sensitively, and thus the fabricated diode shows potential to be developed as a sensing platform.
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Affiliation(s)
- Junghyup Han
- Department of Chemical and Biological Engineering, College of Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Won Hyung Lee
- Program in Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
- Samsung SDI Co. Ltd., 130 Samsung-ro, Yeongtong-gu, Suwon-si, Gyeonggi-Do, 16678, Republic of Korea
| | - Junwoo Park
- Department of Chemistry, Sogang University, 35 Baekbeom-ro, Mapo-gu, Seoul, 04107, Republic of Korea
| | - Huding Jin
- Department of Chemical and Biological Engineering, College of Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
- Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Yong Hyun Cho
- Program in Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Seungyeon Yu
- Department of Chemical and Biological Engineering, College of Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Lianghui Li
- Department of Chemical and Biological Engineering, College of Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Jaewon Lee
- Department of Chemical Engineering, University of California, Santa Barbara, CA, 93106, USA
| | - Gunhoo Woo
- SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University (SKKU), 2066 Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-Do, 16419, Republic of Korea
- Department of Nano Science and Technology, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-Do, 16419, Republic of Korea
| | - Taesung Kim
- SKKU Advanced Institute of Nanotechnology, Sungkyunkwan University (SKKU), 2066 Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-Do, 16419, Republic of Korea
- Department of Nano Science and Technology, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-Do, 16419, Republic of Korea
- School of Mechanical Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-Do, 16419, Republic of Korea
- Department of Semiconductor Convergence Engineering, Sungkyunkwan University, 2066 Seobu-ro, Jangan-gu, Suwon-si, Gyeonggi-Do, 16419, Republic of Korea
| | - Youn Sang Kim
- Department of Chemical and Biological Engineering, College of Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
- Program in Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
- Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul, 08826, Republic of Korea
- Advanced Institute of Convergence Technology, 145 Gwanggyo-ro, Yeongtong-gu, Suwon-si, Gyeonggi-Do, 16229, Republic of Korea
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2
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Alshanski I, Toraskar S, Shitrit A, Gordon-Levitan D, Jain P, Kikkeri R, Hurevich M, Yitzchaik S. Biocatalysis versus Molecular Recognition in Sialoside-Selective Neuraminidase Biosensing. ACS Chem Biol 2023; 18:605-614. [PMID: 36792550 PMCID: PMC10028605 DOI: 10.1021/acschembio.2c00913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
Sialic acid recognition and hydrolysis are essential parts of cellular function and pathogen infectivity. Neuraminidases are enzymes that detach sialic acid from sialosides, and their inhibition is a prime target for viral infection treatment. The connectivity and type of sialic acid influence the recognition and hydrolysis activity of the many different neuraminidases. The common strategies to evaluate neuraminidase activity, recognition, and inhibition rely on extensive labeling and require a large amount of sialylated glycans. The above limitations make the effort of finding viral inhibitors extremely difficult. We used synthetic sialylated glycans and developed a label-free electrochemical method to show that sialoside structural features lead to selective neuraminidase biosensing. We compared Neu5Ac to Neu5Gc sialosides to evaluate the organism-dependent neuraminidase selectivity-sensitivity relationship. We demonstrated that the type of surface and the glycan monolayer density direct the response to either binding or enzymatic activity. We proved that while the hydrophobic glassy carbon surface increases the interaction with the enzyme hydrophobic interface, the negatively charged interface of the lipoic acid monolayer on gold repels the protein and enables biocatalysis. We showed that the sialoside monolayers can serve as tools to evaluate the inhibition of neuraminidases both by biocatalysis and molecular recognition.
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Affiliation(s)
- Israel Alshanski
- The Institute of Chemistry and Center of Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Suraj Toraskar
- Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pune 411008, India
| | - Ariel Shitrit
- The Institute of Chemistry and Center of Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Daniel Gordon-Levitan
- The Institute of Chemistry and Center of Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Prashant Jain
- Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pune 411008, India
| | - Raghavendra Kikkeri
- Indian Institute of Science Education and Research, Dr. Homi Bhabha Road, Pune 411008, India
| | - Mattan Hurevich
- The Institute of Chemistry and Center of Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
| | - Shlomo Yitzchaik
- The Institute of Chemistry and Center of Nanotechnology, The Hebrew University of Jerusalem, Jerusalem 91904, Israel
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Elistratova JG, Akhmadeev BS, Islamova LN, Fazleeva GM, Kalinin AA, Orekhov AS, Petrov KA, Sinyashin OG, Mustafina AR. Mixed bilayers of phosphatidylcholine with dialkylaminostyrylhetarene dyes for AChE-assisted fluorescent sensing of paraoxon. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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4
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Joshi PN, Mervinetsky E, Solomon O, Chen YJ, Yitzchaik S, Friedler A. Electrochemical biosensors based on peptide-kinase interactions at the kinase docking site. Biosens Bioelectron 2022; 207:114177. [PMID: 35305389 DOI: 10.1016/j.bios.2022.114177] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Revised: 03/06/2022] [Accepted: 03/07/2022] [Indexed: 01/17/2023]
Abstract
Kinases are important cancer biomarkers and are conventionally detected based on their catalytic activity. Kinases regulate cellular activities by phosphorylation of motif-specific multiple substrate proteins, resulting in a lack of selectivity of activity-based kinase biosensors. We present an alternative approach of sensing kinases based on the interactions of their allosteric docking sites with a specific partner protein. The new approach was demonstrated for the ERK2 kinase and its substrate ELK-1. A peptide derived from ELK-1 was bound to a gold electrode and ERK2 sensing was performed by electrochemical impedance spectroscopy. We performed a detailed analysis of the interaction between the ELK-1 peptide and the kinase on gold surfaces. Atomic force microscopy, variable angle spectroscopic ellipsometry, X-ray Photoelectron Spectroscopy, and polarization modulation IR reflection-absorption spectroscopy analysis of the gold surface revealed the adsorbed layer of the ERK2 on the peptide monolayer. The sensors showed a high level of target selectivity for ERK2 compared to the p38γ kinase and BSA. ERK2 was detected in its cellular concentration range, 0.5-2.0 μM, and the limit of detection was calculated to be 0.35 μM. Using the flexibility of peptide design, our method is generic for developing sensitive and substrate-specific biosensors and other disease-related enzymes based on their interactions.
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Affiliation(s)
- Pralhad Namdev Joshi
- Institute of Chemistry and the Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Safra Campus, Givat Ram, Jerusalem, 9190401, Israel
| | - Evgeniy Mervinetsky
- Institute of Chemistry and the Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Safra Campus, Givat Ram, Jerusalem, 9190401, Israel
| | - Ohad Solomon
- Institute of Chemistry and the Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Safra Campus, Givat Ram, Jerusalem, 9190401, Israel
| | - Yu-Ju Chen
- Institute of Chemistry, Academia Sinica, Taipei, Taiwan
| | - Shlomo Yitzchaik
- Institute of Chemistry and the Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Safra Campus, Givat Ram, Jerusalem, 9190401, Israel.
| | - Assaf Friedler
- Institute of Chemistry and the Center for Nanoscience and Nanotechnology, The Hebrew University of Jerusalem, Safra Campus, Givat Ram, Jerusalem, 9190401, Israel.
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Yoon SG, Park BJ, Jin H, Lee WH, Han J, Cho YH, Yook H, Han JW, Kim YS. Probing an Interfacial Ionic Pairing-Induced Molecular Dipole Effect in Ionovoltaic System. SMALL METHODS 2021; 5:e2100323. [PMID: 34927990 DOI: 10.1002/smtd.202100323] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 05/18/2021] [Indexed: 06/14/2023]
Abstract
A surficial molecular dipole effect depending on ion-molecular interactions has been crucial issues regarding to an interfacial potential, which can modulate solid electronic and electrochemical systems. Their properties near the interfacial region can be dictated by specific interactions between surface and adsorbates, but understandings of the corresponding details remain at interesting issues. Here, intuitive observations of an ionic pair formation-induced interfacial potential shifts are presented with an ionovoltaic system, and corresponding output signal variations are analyzed in terms of the surficial dipole changes on self-assembled monolayer. With aiding of photoelectron spectroscopies and density function theory simulation, the ionic pair formation-induced potential shifts are revealed to strongly rely on a paired molecular structure and a binding affinity of the paired ionic moieties. Chemical contributions to the binding event are interrogated in terms of polarizability in each ionic group and consistent with chaotropic/kosmotropic character of the ionic groups. Based on these findings, the ionovoltaic output changes are theoretically correlated with an adsorption isotherm reflecting the molecular dipole effect, thereby demonstrating as an efficient interfacial molecular probing method under electrolyte interfacing conditions.
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Affiliation(s)
- Sun Geun Yoon
- Program in Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Byoung Joon Park
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Huding Jin
- Program in Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Won Hyung Lee
- Program in Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Junghyup Han
- Program in Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Yong Hyun Cho
- Program in Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University, Gwanak-gu, Seoul, 08826, Republic of Korea
| | - Hyunwoo Yook
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Jeong Woo Han
- Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 37673, Republic of Korea
- School of Interdisciplinary Bioscience and Bioengineering, Pohang University of Science and Technology (POSTECH), Pohang, Gyeongbuk, 37673, Republic of Korea
| | - Youn Sang Kim
- Program in Nano Science and Technology, Graduate School of Convergence Science and Technology, Seoul National University, Gwanak-gu, Seoul, 08826, Republic of Korea
- School of Chemical & Biological Engineering and Institute of Chemical Processes, College of Engineering, Seoul National University, Gwanak-gu, Seoul, 08826, Republic of Korea
- Advanced Institutes of Convergence Technology, 145 Gwanggyo-ro, Yeongtong-gu, Suwon, 16229, Republic of Korea
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6
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Tetrameric jacalin as a receptor for field effect transistor biosensor to detect secretory IgA in human sweat. J Electroanal Chem (Lausanne) 2020. [DOI: 10.1016/j.jelechem.2020.114371] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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7
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Yitzchaik S, Gutierrez R, Cuniberti G, Yerushalmi R. Diversification of Device Platforms by Molecular Layers: Hybrid Sensing Platforms, Monolayer Doping, and Modeling. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:14103-14123. [PMID: 30253096 DOI: 10.1021/acs.langmuir.8b02369] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Inorganic materials such as semiconductors, oxides, and metals are ubiquitous in a wide range of device technologies owing to the outstanding robustness and mature processing technologies available for such materials. However, while the important contribution of inorganic materials to the advancement of device technologies has been well established for decades, organic-inorganic hybrid device systems, which merge molecular functionalities with inorganic platforms, represent a newer domain that is rapidly evolving at an increasing pace. Such devices benefit from the great versatility and flexibility of the organic building blocks merged with the robustness of the inorganic platforms. Given the overwhelming wealth of literature covering various approaches for modifying and using inorganic devices, this feature article selectively highlights some of the advances made in the context of the diversification of devices by surface chemistry. Particular attention is given to oxide-semiconductor systems and metallic surfaces modified with organic monolayers. The inorganic device components, such as semiconductors, metals, and oxides, are modified by organic monolayers, which may serve as either active, static, or sacrificial components. We portray research directions within the broader field of organic-inorganic hybrid device systems that can be viewed as specific examples of the potential of such hybrid device systems given their comprehensive capabilities of design and diversification. Monolayer doping techniques where sacrificial organic monolayers are introduced into semiconducting elements are reviewed as a specific case, together with associated requirements for nanosystems, devices, and sensors for controlling doping levels and doping profiles on the nanometric scale. Another series of examples of the flexibility provided by the marriage of organic functional monolayers and inorganic device components are represented by a new class of biosensors, where the organic layer functionality is exploited in a functioning device for sensing. Considerations for relying on oxide-terminated semiconductors rather than the pristine semiconductor material as a platform both for processing and sensing are discussed. Finally, we cover aspects related to the use of various theoretical and computational approaches to model organic-inorganic systems. The main objectives of the topics covered here are (i) to present the advances made in each respective domain and (ii) to provide a comprehensive view of the potential uses of organic monolayers and self-assembly processes in the rapidly evolving field of molecular-inorganic hybrid device platforms and processing methodologies. The directions highlighted here provide a perspective on a future, not yet fully realized, integrated approach where organic monolayers are combined with inorganic platforms in order to obtain versatile, robust, and flexible systems with enhanced capabilities.
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Affiliation(s)
- Shlomo Yitzchaik
- Institute of Chemistry and the Center for Nanoscience and Nanotechnology , The Hebrew University of Jerusalem , Edmond J. Safra Campus , Givat Ram Jerusalem , 91904 Israel
| | | | | | - Roie Yerushalmi
- Institute of Chemistry and the Center for Nanoscience and Nanotechnology , The Hebrew University of Jerusalem , Edmond J. Safra Campus , Givat Ram Jerusalem , 91904 Israel
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8
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Vashist SK, Lam E, Hrapovic S, Male KB, Luong JHT. Immobilization of Antibodies and Enzymes on 3-Aminopropyltriethoxysilane-Functionalized Bioanalytical Platforms for Biosensors and Diagnostics. Chem Rev 2014; 114:11083-130. [DOI: 10.1021/cr5000943] [Citation(s) in RCA: 212] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Sandeep Kumar Vashist
- HSG-IMIT - Institut für Mikro- und Informationstechnik, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
- Laboratory for MEMS Applications, Department of Microsystems Engineering - IMTEK, University of Freiburg, Georges-Koehler-Allee 103, 79110 Freiburg, Germany
| | - Edmond Lam
- National Research Council Canada, Montreal, Quebec H4P 2R2, Canada
| | | | - Keith B. Male
- National Research Council Canada, Montreal, Quebec H4P 2R2, Canada
| | - John H. T. Luong
- Innovative Chromatography Group, Irish Separation Science Cluster (ISSC), Department of Chemistry and Analytical, Biological Chemistry Research Facility (ABCRF), University College Cork, Cork, Ireland
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Sohn IY, Kim DJ, Jung JH, Yoon OJ, Nguyen Thanh T, Tran Quang T, Lee NE. pH sensing characteristics and biosensing application of solution-gated reduced graphene oxide field-effect transistors. Biosens Bioelectron 2013; 45:70-6. [DOI: 10.1016/j.bios.2013.01.051] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2012] [Revised: 09/28/2012] [Accepted: 01/23/2013] [Indexed: 12/16/2022]
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10
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Matmor M, Ashkenasy N. Modulating Semiconductor Surface Electronic Properties by Inorganic Peptide–Binders Sequence Design. J Am Chem Soc 2012. [DOI: 10.1021/ja3078494] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Maayan Matmor
- Department of Materials Engineering and the Ilze Katz
Institute for Nanoscale Science and Technology, Ben Gurion University of the Negev, Beer-Sheva, Israel
| | - Nurit Ashkenasy
- Department of Materials Engineering and the Ilze Katz
Institute for Nanoscale Science and Technology, Ben Gurion University of the Negev, Beer-Sheva, Israel
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11
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Credo GM, Su X, Wu K, Elibol OH, Liu DJ, Reddy B, Tsai TW, Dorvel BR, Daniels JS, Bashir R, Varma M. Label-free electrical detection of pyrophosphate generated from DNA polymerase reactions on field-effect devices. Analyst 2012; 137:1351-62. [PMID: 22262038 DOI: 10.1039/c2an15930a] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
We introduce a label-free approach for sensing polymerase reactions on deoxyribonucleic acid (DNA) using a chelator-modified silicon-on-insulator field-effect transistor (SOI-FET) that exhibits selective and reversible electrical response to pyrophosphate anions. The chemical modification of the sensor surface was designed to include rolling-circle amplification (RCA) DNA colonies for locally enhanced pyrophosphate (PPi) signal generation and sensors with immobilized chelators for capture and surface-sensitive detection of diffusible reaction by-products. While detecting arrays of enzymatic base incorporation reactions is typically accomplished using optical fluorescence or chemiluminescence techniques, our results suggest that it is possible to develop scalable and portable PPi-specific sensors and platforms for broad biomedical applications such as DNA sequencing and microbe detection using surface-sensitive electrical readout techniques.
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Affiliation(s)
- Grace M Credo
- Integrated Biosystems Lab, Intel Labs, Intel Corporation, 2200 Mission College Blvd., Santa Clara, CA 95054, USA.
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12
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Bavli D, Tkachev M, Piwonski H, Capua E, de Albuquerque I, Bensimon D, Haran G, Naaman R. Detection and quantification through a lipid membrane using the molecularly controlled semiconductor resistor. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2012; 28:1020-8. [PMID: 22126281 DOI: 10.1021/la203502b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
The detection of covalent and noncovalent binding events between molecules and biomembranes is a fundamental goal of contemporary biochemistry and analytical chemistry. Currently, such studies are performed routinely using fluorescence methods, surface-plasmon resonance spectroscopy, and electrochemical methods. However, there is still a need for novel sensitive miniaturizable detection methods where the sample does not have to be transferred to the sensor, but the sensor can be brought into contact with the sample studied. We present a novel approach for detection and quantification of processes occurring on the surface of a lipid bilayer membrane, by monitoring the current change through the n-type GaAs-based molecularly controlled semiconductor resistor (MOCSER), on which the membrane is adsorbed. Since GaAs is susceptible to etching in an aqueous environment, a protective thin film of methoxysilane was deposited on the device. The system was found to be sensitive enough to allow monitoring changes in pH and in the concentration of amino acids in aqueous solution on top of the membrane. When biotinylated lipids were incorporated into the membrane, it was possible to monitor the binding of streptavidin or avidin. The device modified with biotin-streptavidin complex was capable of detecting the binding of streptavidin antibodies to immobilized streptavidin with high sensitivity and selectivity. The response depends on the charge on the analyte. These results open the way to facile electrical detection of protein-membrane interactions.
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Affiliation(s)
- Danny Bavli
- Department of Chemical Physics, Weizmann Institute of Science, Rehovot, 76100, Israel
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13
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Camacho-Alanis F, Castaneda H, Zangari G, Swami NS. Electrochemical impedance study of GaAs surface charge modulation through the deprotonation of carboxylic acid monolayers. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:11273-11277. [PMID: 21859118 DOI: 10.1021/la2013107] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Modifications to the space charge region of p+ and p-GaAs due to surface charge modulation by the pH-induced deprotonation of bound carboxylic acid terminal monolayers were studied by electrochemical impedance spectroscopy and correlated to flat-band potential measurements from Mott-Schottky plots. We infer that the negative surface dipole formed on GaAs due to monolayer deprotonation causes an enhancement of the downward interfacial band bending. The space charge layer modifications were correlated to intermolecular electrostatic interactions and semiconductor depletion characteristics.
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Vaknin O, Khamaisi B, Mizrahi M, Ashkenasy N. Controlling Field-Effect Transistor Biosensor Electrical Characteristics Using Immunosorbent Assay. ELECTROANAL 2011. [DOI: 10.1002/elan.201100250] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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15
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Yildirim O, Yilmaz MD, Reinhoudt DN, Blank DHA, Rijnders G, Huskens J. Electrochemical stability of self-assembled alkylphosphate monolayers on conducting metal oxides. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:9890-9894. [PMID: 21744865 DOI: 10.1021/la200925v] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Alkylphosphate self-assembled monolayers (SAMs) were prepared on Nb-doped SrTiO(3) (Nb-STO) conducting metal oxide substrates. Unlike thiols on gold, the alkylphosphate SAMs on Nb-STO exhibited an electrochemical stability over a wide voltage range from -2 to 2 V. Cyclic voltammetry showed that the SAM modification inhibited the electrochemical activity of the underlying conducting substrate with an efficiency dependent on the chain length. Impedance spectroscopy showed that SAM-modified Nb-STO substrates have a significantly higher resistance than bare substrates.
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Affiliation(s)
- Oktay Yildirim
- Inorganic Materials Science, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands
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Liu DJ, Credo GM, Su X, Wu K, Lim HC, Elibol OH, Bashir R, Varma M. Surface immobilizable chelator for label-free electrical detection of pyrophosphate. Chem Commun (Camb) 2011; 47:8310-2. [PMID: 21687892 PMCID: PMC3361515 DOI: 10.1039/c1cc12073e] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A new pyrophosphate (PPi) chelator was designed for surface-sensitive electrical detection of biomolecular reactions. This article describes the synthesis of the PPi-selective receptor, its surface immobilization and application to label-free electrical detection on a silicon-based field-effect transistor (FET) sensor.
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Affiliation(s)
- David J. Liu
- Integrated Biosystems Lab, Intel Labs, Intel Corporation, 2200 Mission College Blvd., Santa Clara, CA 95054, USA; Fax: 408-765-2393; Tel: 408-653-9341
| | - Grace M. Credo
- Integrated Biosystems Lab, Intel Labs, Intel Corporation, 2200 Mission College Blvd., Santa Clara, CA 95054, USA; Fax: 408-765-2393; Tel: 408-653-9341
| | - Xing Su
- Integrated Biosystems Lab, Intel Labs, Intel Corporation, 2200 Mission College Blvd., Santa Clara, CA 95054, USA; Fax: 408-765-2393; Tel: 408-653-9341
| | - Kai Wu
- Integrated Biosystems Lab, Intel Labs, Intel Corporation, 2200 Mission College Blvd., Santa Clara, CA 95054, USA; Fax: 408-765-2393; Tel: 408-653-9341
| | - Hsiao C. Lim
- Integrated Biosystems Lab, Intel Labs, Intel Corporation, 2200 Mission College Blvd., Santa Clara, CA 95054, USA; Fax: 408-765-2393; Tel: 408-653-9341
| | - Oguz H. Elibol
- Integrated Biosystems Lab, Intel Labs, Intel Corporation, 2200 Mission College Blvd., Santa Clara, CA 95054, USA; Fax: 408-765-2393; Tel: 408-653-9341
- Birck Nanotechnology Center, Purdue University, West Lafayette, IN 47907, USA
| | - Rashid Bashir
- Departments of Electrical and Computer Engineering and Bioengineering, Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL 61801, USA
| | - Madoo Varma
- Integrated Biosystems Lab, Intel Labs, Intel Corporation, 2200 Mission College Blvd., Santa Clara, CA 95054, USA; Fax: 408-765-2393; Tel: 408-653-9341
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17
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Makowski MS, Ivanisevic A. Molecular analysis of blood with micro-/nanoscale field-effect-transistor biosensors. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2011; 7:1863-75. [PMID: 21638783 PMCID: PMC3876889 DOI: 10.1002/smll.201100211] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/28/2011] [Indexed: 05/17/2023]
Abstract
Rapid and accurate molecular blood analysis is essential for disease diagnosis and management. Field-effect transistor (FET) biosensors are a type of device that promise to advance blood point-of-care testing by offering desirable characteristics such as portability, high sensitivity, brief detection time, low manufacturing cost, multiplexing, and label-free detection. By controlling device parameters, desired FET biosensor performance is obtained. This review focuses on the effects of sensing environment, micro-/nanoscale device structure, operation mode, and surface functionalization on device performance and long-term stability.
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Affiliation(s)
- Matthew S. Makowski
- Weldon School of Biomedical Engineering Purdue University 206 S. Martin Jischke Drive West Lafayette, IN 47907, USA
- Department of Material Science and Engineering North Carolina State University Joint Department of Biomedical Engineering NCSU/UNC-CH 911 Partner's Way Raleigh, NC 27695, USA
| | - Albena Ivanisevic
- Weldon School of Biomedical Engineering Purdue University 206 S. Martin Jischke Drive West Lafayette, IN 47907, USA
- Department of Material Science and Engineering North Carolina State University Joint Department of Biomedical Engineering NCSU/UNC-CH 911 Partner's Way Raleigh, NC 27695, USA
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18
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Affiliation(s)
- Katsuhiko Ariga
- a World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), and JST, CREST , 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Keita Sakakibara
- a World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), and JST, CREST , 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Gary J. Richards
- a World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), and JST, CREST , 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
| | - Jonathan P. Hill
- a World Premier International (WPI) Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), and JST, CREST , 1-1 Namiki, Tsukuba, Ibaraki, 305-0044, Japan
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19
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Capua E, Natan A, Kronik L, Naaman R. The molecularly controlled semiconductor resistor: how does it work? ACS APPLIED MATERIALS & INTERFACES 2009; 1:2679-83. [PMID: 20356142 DOI: 10.1021/am9005622] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
We examine the current response of molecularly controlled semiconductor devices to the presence of weakly interacting analytes. We evaluate the response of two types of devices, a silicon oxide coated silicon device and a GaAs/AlGaAs device, both coated with aliphatic chains and exposed to the same set of analytes. By comparing the device electrical response with contact potential difference and surface photovoltage measurements, we show that there are two mechanisms that may affect the underlying substrate, namely, formation of layers with a net dipolar moment and molecular interaction with surface states. We find that whereas the Si device response is mostly correlated to the analyte dipole, the GaAs device response is mostly correlated to interactions with surface states. Existence of a silicon oxide layer, whether native on the Si or deliberately grown on the GaAs, eliminates analyte interaction with the surface states.
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Affiliation(s)
- Eyal Capua
- Department of Chemical Physics, Weizmann Institute of Science, Rehovoth 76100, Israel
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