1
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Saran R, Klein M, Sharma B, Loke JJ, Perrin QM, Miserez A. Proton conductivity of the protein-based velvet worm slime. iScience 2024; 27:110216. [PMID: 39055923 PMCID: PMC11269932 DOI: 10.1016/j.isci.2024.110216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Revised: 05/16/2024] [Accepted: 06/05/2024] [Indexed: 07/28/2024] Open
Abstract
The properties of complex bodily fluids are linked to their biological functions through natural selection. Velvet worms capture their prey by ensnaring them with a proteinaceous fluid (slime). We examined the electrical conductivity of slime and found that dry slime is an insulator. However, its conductivity can increase by up to 106 times in its hydrated state, which can be further increased by an order in magnitude under acidic hydration (pH ≈ 2.3). The transient current measured using ion-blocking electrodes showed a continuous decay for up to 7 h, revealing slime's nature as a proton conducting material. Slime undergoes a spontaneous fibrilization process producing high aspect ratio ≈ 105 fibers that exhibit an average conductivity ≈2.4 ± 1.1 mS cm-1. These findings enhance our understanding of slime as a natural biopolymer and provide molecular-level guidelines to rationally design biomaterials that may be employed as hygroscopic conductors.
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Affiliation(s)
- Rinku Saran
- Biological and Biomimetic Material Laboratory, Centre for Sustainable Materials, School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Maciej Klein
- Centre for Disruptive Photonic Technologies, The Photonic Institute, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Bhargy Sharma
- Biological and Biomimetic Material Laboratory, Centre for Sustainable Materials, School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Jun Jie Loke
- Biological and Biomimetic Material Laboratory, Centre for Sustainable Materials, School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Quentin Moana Perrin
- Biological and Biomimetic Material Laboratory, Centre for Sustainable Materials, School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
| | - Ali Miserez
- Biological and Biomimetic Material Laboratory, Centre for Sustainable Materials, School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore
- School of Biological Sciences, Nanyang Technological University, Singapore 637551, Singapore
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2
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Chettri A, Kaberov LI, Klosterhalfen N, Perera S, Jamshied M, Schacher FH, Dietzek-Ivanšić B. Poly(2-Oxazoline) Amphiphilicity Tunes the Excited-State Proton Transfer of Pyrenol-Based Polyphotoacids. Chemistry 2024; 30:e202401047. [PMID: 38699878 DOI: 10.1002/chem.202401047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2024] [Revised: 05/02/2024] [Accepted: 05/03/2024] [Indexed: 05/05/2024]
Abstract
The ability of light to change the properties of light-responsive polymers opens avenues for targeted release of cargo with a high degree of spatial and temporal control. Recently, we established photoacid polymers as light-switchable macromolecular amphiphiles. In these systems, light-induced excited-state proton transfer (ESPT) causes changes in amphilicity. However, as the intermolecular process itself critically depends on the local environment of the photoacid unit within the polymer, the overall amphiphilicity directly influences ESPT. Thus, understanding the impact of the local environment on the photophysics of photoacidic side chains is key to material design. In this contribution we address both thermodynamic and kinetic aspects of ESPT in oxazoline-based amphiphilic polymers with pyrenol-based photoacid side chains. We will compare the effect of polymer design, i. e. statistical and block arrangements, i. e. in poly[(2-ethyl-2-oxazoline)-co-(1-(6/8-hydroxyperene)sulphonylaziridine)] and poly(2-ethyl-2-oxazoline)-block-poly[(2-ethyl-2-oxazoline)-co-(2-(3-(6-hydroxypyrene)sulphonamide)propyl-2-oxazoline), on the intermolecular proton transfer reaction by combining steady-state and time-resolved absorption and emission spectroscopy. ESPT appears more prominent in the statistical copolymer compared to a block copolymer with overall similar pyrenol loading. We hypothesize that the difference is due to different local chain arrangements adopted by the polymers in the two cases.
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Affiliation(s)
- Avinash Chettri
- Institute of Physical Chemistry, Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
- Research Department Functional Interfaces, Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, 07745, Jena, Germany
| | - Leonid I Kaberov
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstraße 10, 07743, Jena, Germany
- Jena Center for Soft Matter, Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
| | - Niklas Klosterhalfen
- Institute of Physical Chemistry, Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
- Research Department Functional Interfaces, Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, 07745, Jena, Germany
| | - Sandunika Perera
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstraße 10, 07743, Jena, Germany
- Jena Center for Soft Matter, Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
| | - Mohammed Jamshied
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstraße 10, 07743, Jena, Germany
- Jena Center for Soft Matter, Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
| | - Felix H Schacher
- Institute of Organic Chemistry and Macromolecular Chemistry, Friedrich Schiller University Jena, Humboldtstraße 10, 07743, Jena, Germany
- Jena Center for Soft Matter, Friedrich Schiller University Jena, Philosophenweg 7, 07743, Jena, Germany
| | - Benjamin Dietzek-Ivanšić
- Institute of Physical Chemistry, Friedrich Schiller University Jena, Helmholtzweg 4, 07743, Jena, Germany
- Research Department Functional Interfaces, Leibniz Institute of Photonic Technology, Albert-Einstein-Straße 9, 07745, Jena, Germany
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3
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Li J, Wang C, Su J, Liu Z, Fan H, Wang C, Li Y, He Y, Chen N, Cao J, Chen X. Observing Proton-Electron Mixed Conductivity in Graphdiyne. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2400950. [PMID: 38581284 DOI: 10.1002/adma.202400950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 03/22/2024] [Indexed: 04/08/2024]
Abstract
Mixed conducting materials with both ionic and electronic conductivities have gained prominence in emerging applications. However, exploring material with on-demand ionic and electronic conductivities remains challenging, primarily due to the lack of correlating macroscopic conductivity with atom-scale structure. Here, the correlation of proton-electron conductivity and atom-scale structure in graphdiyne is explored. Precisely adjusting the conjugated diynes and oxygenic functional groups in graphdiyne yields a tunable proton-electron conductivity on the order of 103. In addition, a wet-chemistry lithography technique for uniform preparation of graphdiyne on flexible substrates is provided. Utilizing the proton-electron conductivity and mechanical tolerance of graphdiyne, bimodal flexible devices serving as capacitive switches and resistive sensors are created. As a proof-of-concept, a breath-machine interface for sentence-based communication and self-nursing tasks with an accuracy of 98% is designed. This work represents an important step toward understanding the atom-scale structure-conductivity relationship and extending the applications of mixed conducting materials to assistive technology.
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Affiliation(s)
- Jiaofu Li
- Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Cong Wang
- Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Jiangtao Su
- Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Zhihua Liu
- Institute of Materials Research and Engineering (IMRE), The Agency for Science, Technology and Research, Singapore, 138634, Singapore
| | - Hangming Fan
- Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Changxian Wang
- Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Yanzhen Li
- Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Yongli He
- Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Nuan Chen
- Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Jinwei Cao
- Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Xiaodong Chen
- Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
- Institute for Digital Molecular Analytics and Science (IDMxS), Nanyang Technological University, 59 Nanyang Drive, Singapore, 636921, Singapore
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4
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Ramanthrikkovil Variyam A, Stolov M, Feng J, Amdursky N. Solid-State Molecular Protonics Devices of Solid-Supported Biological Membranes Reveal the Mechanism of Long-Range Lateral Proton Transport. ACS NANO 2024; 18:5101-5112. [PMID: 38314693 PMCID: PMC10867892 DOI: 10.1021/acsnano.3c11990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 01/27/2024] [Accepted: 01/30/2024] [Indexed: 02/07/2024]
Abstract
Lateral proton transport (PT) on the surface of biological membranes is a fundamental biochemical process in the bioenergetics of living cells, but a lack of available experimental techniques has resulted in a limited understanding of its mechanism. Here, we present a molecular protonics experimental approach to investigate lateral PT across membranes by measuring long-range (70 μm) lateral proton conduction via a few layers of lipid bilayers in a solid-state-like environment, i.e., without having bulk water surrounding the membrane. This configuration enables us to focus on lateral proton conduction across the surface of the membrane while decoupling it from bulk water. Hence, by controlling the relative humidity of the environment, we can directly explore the role of water in the lateral PT process. We show that proton conduction is dependent on the number of water molecules and their structure and on membrane composition, where we explore the role of the headgroup, the tail saturation, the membrane phase, and membrane fluidity. The measured PT as a function of temperature shows an inverse temperature dependency, which we explain by the desorption and adsorption of water molecules into the solid membrane platform. We explain our findings by discussing the role of percolating hydrogen bonding within the membrane structure in a Grotthuss-like mechanism.
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Affiliation(s)
| | - Mikhail Stolov
- Wolfson
Department of Chemical Engineering, Technion
− Israel Institute of Technology, Haifa 3200003, Israel
| | - Jiajun Feng
- Schulich
Faculty of Chemistry, Technion −
Israel Institute of Technology, Haifa 3200003, Israel
| | - Nadav Amdursky
- Schulich
Faculty of Chemistry, Technion −
Israel Institute of Technology, Haifa 3200003, Israel
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5
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Orieshyna A, Puetzer JL, Amdursky N. Proton Transport Across Collagen Fibrils and Scaffolds: The Role of Hydroxyproline. Biomacromolecules 2023; 24:4653-4662. [PMID: 37656903 DOI: 10.1021/acs.biomac.3c00326] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/03/2023]
Abstract
Collagen is one of the most studied proteins due to its fundamental role in creating fibrillar structures and supporting tissues in our bodies. Accordingly, collagen is also one of the most used proteins for making tissue-engineered scaffolds for various types of tissues. To date, the high abundance of hydroxyproline (Hyp) within collagen is commonly ascribed to the structure and stability of collagen. Here, we hypothesize a new role for the presence of Hyp within collagen, which is to support proton transport (PT) across collagen fibrils. For this purpose, we explore here three different collagen-based hydrogels: the first is prepared by the self-assembly of natural collagen fibrils, and the second and third are based on covalently linking between collagen via either a self-coupling method or with an additional cross-linker. Following the formation of the hydrogel, we introduce here a two-step reaction, involving (1) attaching methanesulfonyl to the -OH group of Hyp, followed by (2) removing the methanesulfonyl, thus reverting Hyp to proline (Pro). We explore the PT efficiency at each step of the reaction using electrical measurements and show that adding the methanesulfonyl group vastly enhances PT, while reverting Hyp to Pro significantly reduces PT efficiency (compared with the initial point) with different efficiencies for the various collagen-based hydrogels. The role of Hyp in supporting the PT can assist in our understanding of the physiological roles of collagen. Furthermore, the capacity to modulate conductivity across collagen is very important to the use of collagen in regenerative medicine.
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Affiliation(s)
- Anna Orieshyna
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa 3200003, Israel
| | - Jennifer L Puetzer
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, Virginia 23220, United States
| | - Nadav Amdursky
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa 3200003, Israel
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6
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Yang Z, Sarkar AK, Amdursky N. Glycoproteins as a Platform for Making Proton-Conductive Free-Standing Biopolymers. Biomacromolecules 2023; 24:1111-1120. [PMID: 36787188 DOI: 10.1021/acs.biomac.2c01007] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
Biopolymers are an attractive environmentally friendly alternative to common synthetic polymers, whereas primarily proteins and polysaccharides are the biomacromolecules that are used for making the biopolymer. Due to the breadth of side chains of such biomacromolecules capable of participating in hydrogen bonding, proteins and polysaccharide biopolymers were also used for the making of proton-conductive biopolymers. Here, we introduce a new platform for combining the merits of both proteins and polysaccharides while using a glycosylated protein for making the biopolymer. We use mucin as our starting point, whereas being a waste of the food industry, it is a highly available and low-cost glycoprotein. We show how we can use different chemical strategies to target either the glycan part or specific amino acids for both crosslinking between the different glycoproteins, thus making a free-standing biopolymer, as well as for introducing superior proton conductivity properties to the formed biopolymer. The resultant proton-conductive soft biopolymer is an appealing candidate for any soft bioelectronic application.
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Affiliation(s)
- Ziyu Yang
- Schulich Faculty of Chemistry, Technion─Israel Institute of Technology, Haifa 3200003, Israel
| | - Amit Kumar Sarkar
- Schulich Faculty of Chemistry, Technion─Israel Institute of Technology, Haifa 3200003, Israel
| | - Nadav Amdursky
- Schulich Faculty of Chemistry, Technion─Israel Institute of Technology, Haifa 3200003, Israel
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7
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Atkinson JT, Chavez MS, Niman CM, El-Naggar MY. Living electronics: A catalogue of engineered living electronic components. Microb Biotechnol 2023; 16:507-533. [PMID: 36519191 PMCID: PMC9948233 DOI: 10.1111/1751-7915.14171] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2022] [Revised: 09/26/2022] [Accepted: 11/01/2022] [Indexed: 12/23/2022] Open
Abstract
Biology leverages a range of electrical phenomena to extract and store energy, control molecular reactions and enable multicellular communication. Microbes, in particular, have evolved genetically encoded machinery enabling them to utilize the abundant redox-active molecules and minerals available on Earth, which in turn drive global-scale biogeochemical cycles. Recently, the microbial machinery enabling these redox reactions have been leveraged for interfacing cells and biomolecules with electrical circuits for biotechnological applications. Synthetic biology is allowing for the use of these machinery as components of engineered living materials with tuneable electrical properties. Herein, we review the state of such living electronic components including wires, capacitors, transistors, diodes, optoelectronic components, spin filters, sensors, logic processors, bioactuators, information storage media and methods for assembling these components into living electronic circuits.
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Affiliation(s)
- Joshua T Atkinson
- Department of Physics and Astronomy, University of Southern California, Los Angeles, California, USA
| | - Marko S Chavez
- Department of Physics and Astronomy, University of Southern California, Los Angeles, California, USA
| | - Christina M Niman
- Department of Physics and Astronomy, University of Southern California, Los Angeles, California, USA
| | - Mohamed Y El-Naggar
- Department of Physics and Astronomy, University of Southern California, Los Angeles, California, USA.,Department of Biological Sciences, University of Southern California, Los Angeles, California, USA.,Department of Chemistry, University of Southern California, Los Angeles, California, USA
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8
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Yan X, Zhao Y, Cao G, Li X, Gao C, Liu L, Ahmed S, Altaf F, Tan H, Ma X, Xie Z, Zhang H. 2D Organic Materials: Status and Challenges. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023; 10:e2203889. [PMID: 36683257 PMCID: PMC9982583 DOI: 10.1002/advs.202203889] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 10/31/2022] [Indexed: 06/17/2023]
Abstract
In the past few decades, 2D layer materials have gradually become a central focus in materials science owing to their uniquely layered structural qualities and good optoelectronic properties. However, in the development of 2D materials, several disadvantages, such as limited types of materials and the inability to synthesize large-scale materials, severely confine their application. Therefore, further exploration of new materials and preparation methods is necessary to meet technological developmental needs. Organic molecular materials have the advantage of being customizable. Therefore, if organic molecular and 2D materials are combined, the resulting 2D organic materials would have excellent optical and electrical properties. In addition, through this combination, the free design and large-scale synthesis of 2D materials can be realized in principle. Furthermore, 2D organic materials exhibit excellent properties and unique functionalities along with great potential for developing sensors, biomedicine, and electronics. In this review, 2D organic materials are divided into five categories. The preparation methods and material properties of each class of materials are also described in detail. Notably, to comprehensively understand each material's advantages, the latest research applications for each material are presented in detail and summarized. Finally, the future development and application prospects of 2D organic materials are briefly discussed.
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Affiliation(s)
- Xiaobing Yan
- School of Life Sciences, Institute of Life Science and Green Development, Key Laboratory of Brain‐Like Neuromorphic Devices and Systems of Hebei ProvinceCollege of Electronic and Information EngineeringHebei UniversityBaoding071002China
| | - Ying Zhao
- School of Life Sciences, Institute of Life Science and Green Development, Key Laboratory of Brain‐Like Neuromorphic Devices and Systems of Hebei ProvinceCollege of Electronic and Information EngineeringHebei UniversityBaoding071002China
| | - Gang Cao
- School of Life Sciences, Institute of Life Science and Green Development, Key Laboratory of Brain‐Like Neuromorphic Devices and Systems of Hebei ProvinceCollege of Electronic and Information EngineeringHebei UniversityBaoding071002China
| | - Xiaoyu Li
- School of Life Sciences, Institute of Life Science and Green Development, Key Laboratory of Brain‐Like Neuromorphic Devices and Systems of Hebei ProvinceCollege of Electronic and Information EngineeringHebei UniversityBaoding071002China
| | - Chao Gao
- School of Life Sciences, Institute of Life Science and Green Development, Key Laboratory of Brain‐Like Neuromorphic Devices and Systems of Hebei ProvinceCollege of Electronic and Information EngineeringHebei UniversityBaoding071002China
| | - Luan Liu
- School of Life Sciences, Institute of Life Science and Green Development, Key Laboratory of Brain‐Like Neuromorphic Devices and Systems of Hebei ProvinceCollege of Electronic and Information EngineeringHebei UniversityBaoding071002China
| | - Shakeel Ahmed
- Collaborative Innovation Center for Optoelectronic Science and TechnologyInternational Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of EducationInstitute of Microscale OptoelectronicsCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen518060P. R. China
| | - Faizah Altaf
- Department of ChemistryWomen University Bagh Azad KashmirBagh Azad KashmirBagh12500Pakistan
- School of Materials Science and EngineeringGeorgia Institute of Technology North AvenueAtlantaGA30332USA
| | - Hui Tan
- Department of RespiratoryShenzhen Children's HospitalShenzhen518036P. R. China
| | - Xiaopeng Ma
- Department of RespiratoryShenzhen Children's HospitalShenzhen518036P. R. China
| | - Zhongjian Xie
- Institute of PediatricsShenzhen Children's HospitalShenzhenGuangdong518038P. R. China
- Shenzhen International Institute for Biomedical ResearchShenzhenGuangdong518116China
| | - Han Zhang
- Collaborative Innovation Center for Optoelectronic Science and TechnologyInternational Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of EducationInstitute of Microscale OptoelectronicsCollege of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen518060P. R. China
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9
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Jampasa S, Kreangkaiwal C, Kalcher K, Waiwinya W, Techawiwattanaboon T, Songumpai N, Sueyanyongsiri P, Pattanasombatsakul K, Techapornroong M, Benjamanukul S, Chailapakul O, Patarakul K, Chaiyo S. Resistance-Based Lateral Flow Immunosensor with a NFC-Enabled Smartphone for Rapid Diagnosis of Leptospirosis in Clinical Samples. Anal Chem 2022; 94:14583-14592. [PMID: 36219138 DOI: 10.1021/acs.analchem.2c02409] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Leptospirosis is one of the most life-threatening tropical diseases caused by pathogenic Leptospira. To date, a diagnostic device that offers rapid and sensitive detection of leptospires has been still in demand for proper treatment to reduce the mortality rate. Herein, we create a resistance-based lateral flow immunosensor diagnosis device (R-LFI) that integrates near-field communication (NFC) with a portable smartphone for leptospiral detection in clinical samples. A specific monoclonal antibody against the pathogen was coated on a nitrocellulose membrane (NCM) where the test line was collocated. Two electrodes with a sandwich-like configuration were installed employing a conductive double-sided adhesive tape and connected with a NFC smartphone-based detection system. A half-sandwich immunocomplex formation induced high proton conduction, resulting in a considerable decrement in resistive response. The performance of the R-LFI sensor was evaluated using recombinant LipL32 (rLipL32), Leptospira interrogans, and clinical samples. The R-LFI device exhibited linear responses toward rLipL32 protein in phosphate buffer and L. interrogans-spiked healthy human serum samples within the concentration ranging from 1 to 1000 ng mL-1 (limit of detection (LOD): 0.29 ng mL-1) and from 104 to 106 cell mL-1 (LOD: 4.89 × 103 cell mL-1), respectively. Our R-LFI sensor successfully detected L. interrogans-positive clinical samples as confirmed by polymerase chain reaction (PCR). This platform offers high specificity, selectivity, simplicity, miniscule sample volume, and no labeling element requirement. These desirable features make it particularly suitable for countries where medical facilities and resources are limited.
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Affiliation(s)
- Sakda Jampasa
- Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Bangkok10330, Thailand
| | - Chahya Kreangkaiwal
- Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok10330, Thailand
| | - Kurt Kalcher
- Institute of Chemistry, Analytical Chemistry, University of Graz, A-8010Graz, Austria
| | - Wassa Waiwinya
- Interdisciplinary Program, Medical Microbiology, Graduate School, Chulalongkorn University, Bangkok10330, Thailand
| | - Teerasit Techawiwattanaboon
- Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok10330, Thailand.,Chula Vaccine Research Center (Chula VRC), Center of Excellence in Vaccine Research and Development, Chulalongkorn University, Bangkok10330, Thailand
| | - Nopporn Songumpai
- Division of Infectious diseases, Department of Internal Medicine, Hatyai Hospital, Songkhla90110, Thailand
| | | | | | | | - Saovanee Benjamanukul
- Department of Internal Medicine, Banphaeo General Hospital, Samut Sakhon74120, Thailand
| | - Orawon Chailapakul
- Electrochemistry and Optical Spectroscopy Center of Excellence (EOSCE), Chulalongkorn University, Bangkok10330, Thailand
| | - Kanitha Patarakul
- Department of Microbiology, Faculty of Medicine, Chulalongkorn University, Bangkok10330, Thailand.,Chula Vaccine Research Center (Chula VRC), Center of Excellence in Vaccine Research and Development, Chulalongkorn University, Bangkok10330, Thailand
| | - Sudkate Chaiyo
- Institute of Biotechnology and Genetic Engineering, Chulalongkorn University, Bangkok10330, Thailand.,Electrochemistry and Optical Spectroscopy Center of Excellence (EOSCE), Chulalongkorn University, Bangkok10330, Thailand.,Center of Excellence for Food and Water Risk Analysis (FAWRA), Chulalongkorn University, Bangkok10330, Thailand
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10
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Nandi R, Amdursky N. The Dual Use of the Pyranine (HPTS) Fluorescent Probe: A Ground-State pH Indicator and an Excited-State Proton Transfer Probe. Acc Chem Res 2022; 55:2728-2739. [PMID: 36053265 PMCID: PMC9494743 DOI: 10.1021/acs.accounts.2c00458] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Indexed: 01/19/2023]
Abstract
Molecular fluorescent probes are an essential experimental tool in many fields, ranging from biology to chemistry and materials science, to study the localization and other environmental properties surrounding the fluorescent probe. Thousands of different molecular fluorescent probes can be grouped into different families according to their photophysical properties. This Account focuses on a unique class of fluorescent probes that distinguishes itself from all other probes. This class is termed photoacids, which are molecules exhibiting a change in their acid-base transition between the ground and excited states, resulting in a large change in their pKa values between these two states, which is thermodynamically described using the Förster cycle. While there are many different photoacids, we focus only on pyranine, which is the most used photoacid, with pKa values of ∼7.4 and ∼0.4 for its ground and excited states, respectively. Such a difference between the pKa values is the basis for the dual use of the pyranine fluorescent probe. Furthermore, the protonated and deprotonated states of pyranine absorb and emit at different wavelengths, making it easy to focus on a specific state. Pyranine has been used for decades as a fluorescent pH indicator for physiological pH values, which is based on its acid-base equilibrium in the ground state. While the unique excited-state proton transfer (ESPT) properties of photoacids have been explored for more than a half-century, it is only recently that photoacids and especially pyranine have been used as fluorescent probes for the local environment of the probe, especially the hydration layer surrounding it and related proton diffusion properties. Such use of photoacids is based on their capability for ESPT from the photoacid to a nearby proton acceptor, which is usually, but not necessarily, water. In this Account, we detail the photophysical properties of pyranine, distinguishing between the processes in the ground state and the ones in the excited state. We further review the different utilization of pyranine for probing different properties of the environment. Our main perspective is on the emerging use of the ESPT process for deciphering the hydration layer around the probe and other parameters related to proton diffusion taking place while the molecule is in the excited state, focusing primarily on bio-related materials. Special attention is given to how to perform the experiments and, most importantly, how to interpret their results. We also briefly discuss the breadth of possibilities in making pyranine derivatives and the use of pyranine for controlling dynamic reactions.
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Affiliation(s)
- Ramesh Nandi
- Schulich Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa 3200003, Israel
| | - Nadav Amdursky
- Schulich Faculty of Chemistry, Technion − Israel Institute of Technology, Haifa 3200003, Israel
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11
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Wang H, Nienhaus K, Shang L, Nienhaus GU. Highly luminescent positively charged quantum dots interacting with proteins and cells. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200350] [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]
Affiliation(s)
- Haixia Wang
- Institute of Applied Physics, Karlsruhe Institute of Technology (KIT) 76131 Karlsruhe Germany
| | - Karin Nienhaus
- Institute of Applied Physics, Karlsruhe Institute of Technology (KIT) 76131 Karlsruhe Germany
| | - Li Shang
- Institute of Applied Physics, Karlsruhe Institute of Technology (KIT) 76131 Karlsruhe Germany
| | - Gerd Ulrich Nienhaus
- Institute of Applied Physics, Karlsruhe Institute of Technology (KIT) 76131 Karlsruhe Germany
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT) 76344 Eggenstein‐Leopoldshafen Germany
- Institute of Biological and Chemical Systems, Karlsruhe Institute of Technology (KIT) 76344 Eggenstein‐Leopoldshafen Germany
- Department of Physics University of Illinois at Urbana‐Champaign Urbana IL 61801 USA
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12
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Lam NT, McCluskey JB, Glover DJ. Harnessing the Structural and Functional Diversity of Protein Filaments as Biomaterial Scaffolds. ACS APPLIED BIO MATERIALS 2022; 5:4668-4686. [PMID: 35766918 DOI: 10.1021/acsabm.2c00275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The natural ability of many proteins to polymerize into highly structured filaments has been harnessed as scaffolds to align functional molecules in a diverse range of biomaterials. Protein-engineering methodologies also enable the structural and physical properties of filaments to be tailored for specific biomaterial applications through genetic engineering or filaments built from the ground up using advances in the computational prediction of protein folding and assembly. Using these approaches, protein filament-based biomaterials have been engineered to accelerate enzymatic catalysis, provide routes for the biomineralization of inorganic materials, facilitate energy production and transfer, and provide support for mammalian cells for tissue engineering. In this review, we describe how the unique structural and functional diversity in natural and computationally designed protein filaments can be harnessed in biomaterials. In addition, we detail applications of these protein assemblies as material scaffolds with a particular emphasis on applications that exploit unique properties of specific filaments. Through the diversity of protein filaments, the biomaterial engineer's toolbox contains many modular protein filaments that will likely be incorporated as the main structural component of future biomaterials.
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Affiliation(s)
- Nga T Lam
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Joshua B McCluskey
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Dominic J Glover
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales 2052, Australia
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13
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Mostert AB. The importance of water content on the conductivity of biomaterials and bioelectronic devices. J Mater Chem B 2022; 10:7108-7121. [PMID: 35735112 DOI: 10.1039/d2tb00593j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Conductive biocompatible-, bioinspired- and biomaterials are increasing in importance, especially in bioelectronic applications where these materials are used in a variety of devices. Given the intended purpose of many of these devices is to interface with the human body, a pertinent issue is the effect of water from the environment on the electrical properties of the materials and devices. A researcher on biomaterials may currently not be aware, but the conductivity of these materials and device performances can be significantly altered with the presence of hydration in the environment. Examples will be given to highlight the problem that the conductivity of biomaterials can change by orders of magnitude depending on water content. Furthermore, case studies will be discussed in which control of the water content was key to understanding the underlying charge transport mechanism of conductive biomaterials. Examples of various devices and their response to hydration content will also be covered. Finally, this perspective will also mention the various methods of hydration control (including contrast studies) that can be used to perform careful work on conductive biomaterials and devices. Overall, water content should be considered an environmental variable as important as temperature to control for sound scientific investigation and to yield understanding of conductive biomaterials and bioelectronic devices.
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Affiliation(s)
- A Bernardus Mostert
- Department of Physics, Swansea University, Singleton Park, SA2, 8PP, Wales, UK.
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14
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Roy S, Zheng L, Silberbush O, Engel M, Atsmon-Raz Y, Miller Y, Migliore A, Beratan DN, Ashkenasy N. Mechanism of Side Chain-Controlled Proton Conductivity in Bioinspired Peptidic Nanostructures. J Phys Chem B 2021; 125:12741-12752. [PMID: 34780197 DOI: 10.1021/acs.jpcb.1c08857] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Bioinspired peptide assemblies are promising candidates for use as proton-conducting materials in electrochemical devices and other advanced technologies. Progress toward applications requires establishing foundational structure-function relationships for transport in these materials. This experimental-theoretical study sheds light on how the molecular structure and proton conduction are linked in three synthetic cyclic peptide nanotube assemblies that comprise the three canonical basic amino acids (lysine, arginine, and histidine). Experiments find an order of magnitude higher proton conductivity for lysine-containing peptide assemblies compared to histidine and arginine containing assemblies. The simulations indicate that, upon peptide assembly, the basic amino acid side chains are close enough to enable direct proton transfer. The proton transfer kinetics is determined in the simulations to be governed by the structure and flexibility of the side chains. Together, experiments and theory indicate that the proton mobility is the main determinant of proton conductivity, critical for the performance of peptide-based devices.
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Affiliation(s)
- Subhasish Roy
- Department of Materials Engineering, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel
| | - Lianjun Zheng
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States
| | - Ohad Silberbush
- Department of Materials Engineering, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel
| | - Maor Engel
- Department of Materials Engineering, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel
| | - Yoav Atsmon-Raz
- Department of Chemistry, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel
| | - Yifat Miller
- Department of Chemistry, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel.,Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel
| | - Agostino Migliore
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States.,Department of Chemical Sciences, University of Padova, Via Marzolo, 1, Padova 35131, Italy
| | - David N Beratan
- Department of Chemistry, Duke University, Durham, North Carolina 27708, United States.,Department of Physics, Duke University, Durham, North Carolina 27708, United States.,Department of Biochemistry, Duke University, Durham, North Carolina 27710, United States
| | - Nurit Ashkenasy
- Department of Materials Engineering, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel.,Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, P.O. Box 653, Beer-Sheva 84105, Israel
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15
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Burnstine‐Townley A, Mondal S, Agam Y, Nandi R, Amdursky N. Light‐Modulated Cationic and Anionic Transport across Protein Biopolymers**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202111024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Alex Burnstine‐Townley
- Schulich Faculty of Chemistry Technion—Israel Institute of Technology Haifa 3200003 Israel
| | - Somen Mondal
- Schulich Faculty of Chemistry Technion—Israel Institute of Technology Haifa 3200003 Israel
| | - Yuval Agam
- Schulich Faculty of Chemistry Technion—Israel Institute of Technology Haifa 3200003 Israel
| | - Ramesh Nandi
- Schulich Faculty of Chemistry Technion—Israel Institute of Technology Haifa 3200003 Israel
| | - Nadav Amdursky
- Schulich Faculty of Chemistry Technion—Israel Institute of Technology Haifa 3200003 Israel
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16
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Burnstine-Townley A, Mondal S, Agam Y, Nandi R, Amdursky N. Light-Modulated Cationic and Anionic Transport across Protein Biopolymers*. Angew Chem Int Ed Engl 2021; 60:24676-24685. [PMID: 34492153 DOI: 10.1002/anie.202111024] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Indexed: 12/13/2022]
Abstract
Light is a convenient source of energy and the heart of light-harvesting natural systems and devices. Here, we show light-modulation of both the chemical nature and ionic charge carrier concentration within a protein-based biopolymer that was covalently functionalized with photoacids or photobases. We explore the capability of the biopolymer-tethered photoacids and photobases to undergo excited-state proton transfer and capture, respectively. Electrical measurements show that both the photoacid- and photobase-functionalized biopolymers exhibit an impressive light-modulated increase in ionic conductivity. Whereas cationic protons are the charge carriers for the photoacid-functionalized biopolymer, water-derived anionic hydroxides are the suggested charge carriers for the photobase-functionalized biopolymer. Our work introduces a versatile toolbox to photomodulate both protons and hydroxides as charge carriers in polymers, which can be of interest for a variety of applications.
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Affiliation(s)
- Alex Burnstine-Townley
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa, 3200003, Israel
| | - Somen Mondal
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa, 3200003, Israel
| | - Yuval Agam
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa, 3200003, Israel
| | - Ramesh Nandi
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa, 3200003, Israel
| | - Nadav Amdursky
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa, 3200003, Israel
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17
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Martinez-Gonzalez JA, Cavaye H, McGettrick JD, Meredith P, Motovilov KA, Mostert AB. Interfacial water morphology in hydrated melanin. SOFT MATTER 2021; 17:7940-7952. [PMID: 34378618 DOI: 10.1039/d1sm00777g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The importance of electrically functional biomaterials is increasing as researchers explore ways to utilise them in novel sensing capacities. It has been recognised that for many of these materials the state of hydration is a key parameter that can heavily affect the conductivity, particularly those that rely upon ionic or proton transport as a key mechanism. However, thus far little attention has been paid to the nature of the water morphology in the hydrated state and the concomitant ionic conductivity. Presented here is an inelastic neutron scattering (INS) experiment on hydrated eumelanin, a model bioelectronic material, in order to investigate its 'water morphology'. We develop a rigorous new methodology for performing hydration dependent INS experiments. We also model the eumelanin dry spectra with a minimalist approach whereas for higher hydration levels we are able to obtain difference spectra to extract out the water scattering signal. A key result is that the physi-sorbed water structure within eumelanin is dominated by interfacial water with the number of water layers between 3-5, and no bulk water. We also detect for the first time, the potential signatures for proton cations, most likely the Zundel ion, within a biopolymer/water system. These new signatures may be general for soft proton ionomer systems, if the systems are comprised of only interfacial water within their structure. The nature of the water morphology opens up new questions about the potential ionic charge transport mechanisms within hydrated bioelectronics materials.
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Affiliation(s)
- J A Martinez-Gonzalez
- ISIS Neutron and Muon Source, Rutherford Appleton Laboratory, Science and Technology Facilities Council, Didcot, OX11 0QX, UK
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18
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Nandi R, Agam Y, Amdursky N. A Protein-Based Free-Standing Proton-Conducting Transparent Elastomer for Large-Scale Sensing Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2101208. [PMID: 34219263 DOI: 10.1002/adma.202101208] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 05/20/2021] [Indexed: 05/26/2023]
Abstract
A most important endeavor in modern materials' research is the current shift toward green environmental and sustainable materials. Natural resources are one of the attractive building blocks for making environmentally friendly materials. In most cases, however, the performance of nature-derived materials is inferior to the performance of carefully designed synthetic materials. This is especially true for conductive polymers, which is the topic here. Inspired by the natural role of proteins in mediating protons, their utilization in the creation of a free-standing transparent polymer with a highly elastic nature and proton conductivity comparable to that of synthetic polymers, is demonstrated. Importantly, the polymerization process relies on natural protein crosslinkers and is spontaneous and energy-efficient. The protein used, bovine serum albumin, is one of the most affordable proteins, resulting in the ability to create large-scale materials at a low cost. Due to the inherent biodegradability and biocompatibility of the elastomer, it is promising for biomedical applications. Here, its immediate utilization as a solid-state interface for sensing of electrophysiological signals, is shown.
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Affiliation(s)
- Ramesh Nandi
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa, 3200003, Israel
| | - Yuval Agam
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa, 3200003, Israel
| | - Nadav Amdursky
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa, 3200003, Israel
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19
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Mondal S, Ghorai N, Bhunia S, Ghosh HN, Amdursky N. Long-range light-modulated charge transport across the molecular heterostructure doped protein biopolymers. Chem Sci 2021; 12:8731-8739. [PMID: 34257872 PMCID: PMC8246076 DOI: 10.1039/d1sc00487e] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 05/17/2021] [Indexed: 01/12/2023] Open
Abstract
Biological electron transfer (ET) across proteins is ubiquitous, such as the notable photosynthesis example, where light-induced charge separation takes place within the reaction center, followed by sequential ET via intramolecular cofactors within the protein. Far from biology, carbon dots (C-Dots) with their unique optoelectronic properties can be considered as game-changers for next-generation advanced technologies. Here, we use C-Dots for making heterostructure (HS) configurations by conjugating them to a natural ET mediator, the hemin molecule, thus making an electron donor-acceptor system. We show by transient absorption and emission spectroscopy that the rapid intramolecular charge separation happens following light excitation, which can be ascribed to an ultrafast electron and hole transfer (HT) from the C-Dot donor to the hemin acceptor. Upon integrating the HS into a protein matrix, we show that this HT within the HS configuration is 3.3 times faster compared to the same process in solution, indicating the active role of the protein in supporting the rapid light-induced long-range intermolecular charge separation. We further use impedance, electrochemical, and transient photocurrent measurements to show that the light-induced transient charge separation results in an enhanced ET and HT efficiency across the protein biopolymer. The charge conduction across our protein biopolymers, reaching nearly 0.01 S cm-1, along with the simplicity and low-cost of their formation promotes their use in a variety of optoelectronic devices, such as artificial photosynthesis, photo-responsive protonic-electronic transistors, and photodetectors.
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Affiliation(s)
- Somen Mondal
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology Haifa 3200003 Israel
- Institute of Chemical Technology, Mumbai, Marathwada Campus Jalna Maharashtra 431 203 India
| | - Nandan Ghorai
- Institute of Nano Science and Technology Mohali Punjab 160064 India
| | - Soumyadip Bhunia
- Indian Institute of Science Education and Research (IISER) Kolkata Mohanpur West Bengal 741246 India
| | - Hirendra N Ghosh
- Institute of Nano Science and Technology Mohali Punjab 160064 India
| | - Nadav Amdursky
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology Haifa 3200003 Israel
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20
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Jia M, Kim J, Nguyen T, Duong T, Rolandi M. Natural biopolymers as proton conductors in bioelectronics. Biopolymers 2021; 112:e23433. [PMID: 34022064 DOI: 10.1002/bip.23433] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 05/01/2021] [Accepted: 05/03/2021] [Indexed: 12/19/2022]
Abstract
Bioelectronic devices sense or deliver information at the interface between living systems and electronics by converting biological signals into electronic signals and vice-versa. Biological signals are typically carried by ions and small molecules. As such, ion conducting materials are ideal candidates in bioelectronics for an optimal interface. Among these materials, ion conducting polymers that are able to uptake water are particularly interesting because, in addition to ionic conductivity, their mechanical properties can closely match the ones of living tissue. In this review, we focus on a specific subset of ion-conducting polymers: proton (H+ ) conductors that are naturally derived. We first provide a brief introduction of the proton conduction mechanism, and then outline the chemical structure and properties of representative proton-conducting natural biopolymers: polysaccharides (chitosan and glycosaminoglycans), peptides and proteins, and melanin. We then highlight examples of using these biopolymers in bioelectronic devices. We conclude with current challenges and future prospects for broader use of natural biopolymers as proton conductors in bioelectronics and potential translational applications.
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Affiliation(s)
- Manping Jia
- Department of Electrical and Computer Engineering, University of California Santa Cruz, Santa Cruz, California, USA
| | - Jinhwan Kim
- Department of Electrical and Computer Engineering, University of California Santa Cruz, Santa Cruz, California, USA
| | - Tiffany Nguyen
- Department of Electrical and Computer Engineering, University of California Santa Cruz, Santa Cruz, California, USA.,Department of Biomedical Engineering, California State University Long Beach, Long Beach, California, USA
| | - Thi Duong
- Department of Electrical and Computer Engineering, University of California Santa Cruz, Santa Cruz, California, USA.,Department of Mechanical and Aerospace Engineering, The Henry Samueli School of Engineering, University of California, Irvine, California, USA
| | - Marco Rolandi
- Department of Electrical and Computer Engineering, University of California Santa Cruz, Santa Cruz, California, USA
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21
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Xu C, Kandel N, Qiao X, Khan MI, Pratakshya P, Tolouei NE, Chen B, Gorodetsky AA. Long-Range Proton Transport in Films from a Reflectin-Derived Polypeptide. ACS APPLIED MATERIALS & INTERFACES 2021; 13:20938-20946. [PMID: 33938723 DOI: 10.1021/acsami.0c18929] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Protein- and peptide-based proton conductors have been extensively studied because of their important roles in biological processes and established potential for bioelectronic device applications. However, despite much progress, the demonstration of long-range proton transport for such materials has remained relatively rare. Herein, we fabricate, electrically interrogate, and physically characterize films from a reflectin-derived polypeptide. The electrical measurements indicate that device-integrated films exhibit proton conductivities with values of ∼0.4 mS/cm and sustain proton transport over distances of ∼1 mm. The accompanying physical characterization indicates that the polypeptide possesses characteristics analogous to those of the parent protein class and furnishes insight into the relationship between the polypeptide's electrical functionality and structure in the solid state. When considered together, our findings hold significance for the continued development and engineering of not only reflectin-based materials but also other bioinspired proton conductors.
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Affiliation(s)
- Chengyi Xu
- Department of Materials Science and Engineering, University of California, Irvine, Irvine, California 92697, United States
| | - Nabin Kandel
- Department of Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - Xin Qiao
- Department of Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - Md Imran Khan
- Department of Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - Preeta Pratakshya
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
| | - Nadia E Tolouei
- Department of Chemical and Biomolecular Engineering, University of California, Irvine, Irvine, California 92697, United States
| | - Bo Chen
- Department of Physics, University of Central Florida, Orlando, Florida 32816, United States
| | - Alon A Gorodetsky
- Department of Materials Science and Engineering, University of California, Irvine, Irvine, California 92697, United States
- Department of Chemistry, University of California, Irvine, Irvine, California 92697, United States
- Department of Chemical and Biomolecular Engineering, University of California, Irvine, Irvine, California 92697, United States
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22
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Sun X, Liu S, Wu Q, Zhang S, Tian H, Bai X, Li Z, Lu Y, Liu S. ‘Proton escalator’ PEI and phosphotungstic acid containing nanofiber membrane with remarkable proton conductivity. Inorg Chem Front 2021. [DOI: 10.1039/d1qi00026h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Polyethyleneimine (PEI) and phosphotungstic acid (HPW) build an efficient proton transmission path. The segmental movement of flexible PEI speeds up the migration of protons, which acts as a ‘proton-escalator’.
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Affiliation(s)
- Xiuwei Sun
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education
- College of Chemistry
- Northeast Normal University
- Changchun
- P. R. China
| | - Shumei Liu
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education
- College of Chemistry
- Northeast Normal University
- Changchun
- P. R. China
| | - Qingyin Wu
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- PR China
| | - Shan Zhang
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education
- College of Chemistry
- Northeast Normal University
- Changchun
- P. R. China
| | - Hongrui Tian
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education
- College of Chemistry
- Northeast Normal University
- Changchun
- P. R. China
| | - Xue Bai
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education
- College of Chemistry
- Northeast Normal University
- Changchun
- P. R. China
| | - Zhuo Li
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education
- College of Chemistry
- Northeast Normal University
- Changchun
- P. R. China
| | - Ying Lu
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education
- College of Chemistry
- Northeast Normal University
- Changchun
- P. R. China
| | - Shuxia Liu
- Key Laboratory of Polyoxometalate and Reticular Material Chemistry of Ministry of Education
- College of Chemistry
- Northeast Normal University
- Changchun
- P. R. China
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23
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The porphyrin ring rather than the metal ion dictates long-range electron transport across proteins suggesting coherence-assisted mechanism. Proc Natl Acad Sci U S A 2020; 117:32260-32266. [PMID: 33288696 DOI: 10.1073/pnas.2008741117] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The fundamental biological process of electron transfer (ET) takes place across proteins with common ET pathways of several nanometers. Recent discoveries push this limit and show long-range extracellular ET over several micrometers. Here, we aim in deciphering how protein-bound intramolecular cofactors can facilitate such long-range ET. In contrast to natural systems, our protein-based platform enables us to modulate important factors associated with ET in a facile manner, such as the type of the cofactor and its quantity within the protein. We choose here the biologically relevant protoporphyrin molecule as the electron mediator. Unlike natural systems having only Fe-containing protoporphyrins, i.e., heme, as electron mediators, we use here porphyrins with different metal centers, or lacking a metal center. We show that the metal redox center has no role in ET and that ET is mediated solely by the conjugated backbone of the molecule. We further discuss several ET mechanisms, accounting to our observations with possible contribution of coherent processes. Our findings contribute to our understanding of the participation of heme molecules in long-range biological ET.
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24
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Mondal S, Agam Y, Amdursky N. Enhanced Proton Conductivity across Protein Biopolymers Mediated by Doped Carbon Nanoparticles. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2005526. [PMID: 33108059 DOI: 10.1002/smll.202005526] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Indexed: 06/11/2023]
Abstract
Carbon nanoparticles, known as carbon-dots (C-Dots), are famous for their optoelectronic properties. Here it is shown that C-Dots can also mediate protons, where protein biopolymers are used as the protonic transport matrix. Energy transfer measurements indicate that different doped C-Dots bind to the protein biopolymer in different efficiencies. Electrical impedance measurements reveal enhanced conductance across the protein biopolymer upon C-Dots integration, dependent on the doping type. The enhanced conductivity is attributed to protonic conduction due to the large observed kinetic isotope effect, resulting in one of the highest measured proton conductivity across protein biopolymers. Transistor measurements show that the various doped C-Dots-protein biopolymer exhibit different increase in charge carrier density and in carrier mobility, suggesting different modes of proton transport. The ability of C-Dots to support protonic conduction opens a field of carbon-based protonic nanoparticles and due to the formation simplicity of C-Dots they can be integrated in a variety of protonic devices.
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Affiliation(s)
- Somen Mondal
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa, 3200003, Israel
| | - Yuval Agam
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa, 3200003, Israel
| | - Nadav Amdursky
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology, Haifa, 3200003, Israel
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25
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Qian X, Chen L, Yin L, Liu Z, Pei S, Li F, Hou G, Chen S, Song L, Thebo KH, Cheng HM, Ren W. CdPS
3
nanosheets-based membrane with high proton conductivity enabled by Cd vacancies. Science 2020; 370:596-600. [DOI: 10.1126/science.abb9704] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Accepted: 09/10/2020] [Indexed: 12/28/2022]
Affiliation(s)
- Xitang Qian
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
- School of Materials Science and Engineering, University of Science and Technology of China, 72 Wenhua Road, Shenyang 110016, China
| | - Long Chen
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
| | - Lichang Yin
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
| | - Zhibo Liu
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
| | - Songfeng Pei
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
| | - Fan Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guangjin Hou
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China
| | - Shuangming Chen
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
| | - Li Song
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
| | - Khalid Hussain Thebo
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
| | - Hui-Ming Cheng
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
- School of Materials Science and Engineering, University of Science and Technology of China, 72 Wenhua Road, Shenyang 110016, China
- Tsinghua-Berkeley Shenzhen Institute (TBSI), Tsinghua University, 1001 Xueyuan Road, Shenzhen 518055, China
| | - Wencai Ren
- Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
- School of Materials Science and Engineering, University of Science and Technology of China, 72 Wenhua Road, Shenyang 110016, China
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26
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Magaz A, Li X, Gough JE, Blaker JJ. Graphene oxide and electroactive reduced graphene oxide-based composite fibrous scaffolds for engineering excitable nerve tissue. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 119:111632. [PMID: 33321671 DOI: 10.1016/j.msec.2020.111632] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 10/02/2020] [Accepted: 10/13/2020] [Indexed: 02/06/2023]
Abstract
This study systematically investigates the role of graphene oxide (GO) and reduced GO (rGO)/silk-based composite micro/nano-fibrous scaffolds in regulating neuronal cell behavior in vitro, given the limited comparative studies on the effects of graphene family materials on nerve regeneration. Fibrous scaffolds can mimic the architecture of the native extracellular matrix and are potential candidates for tissue engineering peripheral nerves. Silk/GO micro/nano-fibrous scaffolds were electrospun with GO loadings 1 to 10 wt.%, and optionally post-reduced in situ to explore a family of electrically conductive non-woven silk/rGO scaffolds. Conductivities up to 4 × 10-5 S cm-1 were recorded in the dry state, which increased up to 3 × 10-4 S cm-1 after hydration. Neuronoma NG108-15 cells adhered and were viable on all substrates. Enhanced metabolic activity and proliferation were observed on the GO-containing scaffolds, and these cell responses were further promoted for electroactive silk/rGO. Neurite extensions up to 100 μm were achieved by day 5, with maximum outgrowth up to ~250 μm on some of the conductive substrates. These electroactive composite fibrous scaffolds exhibit potential to enhance the neuronal cell response and could be versatile supportive substrates for neural tissue engineering applications.
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Affiliation(s)
- Adrián Magaz
- Department of Materials and Henry Royce Institute, The University of Manchester, Manchester M13 9PL, United Kingdom; Institute of Materials Research and Engineering (IMRE), Agency for Science Technology and Research (A*STAR), 138634, Singapore
| | - Xu Li
- Institute of Materials Research and Engineering (IMRE), Agency for Science Technology and Research (A*STAR), 138634, Singapore; Department of Chemistry, National University of Singapore, 117543 Singapore, Singapore.
| | - Julie E Gough
- Department of Materials and Henry Royce Institute, The University of Manchester, Manchester M13 9PL, United Kingdom
| | - Jonny J Blaker
- Department of Materials and Henry Royce Institute, The University of Manchester, Manchester M13 9PL, United Kingdom; Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, Oslo 0317, Norway.
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27
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Liu Q, Li Z, Wang D, Li Z, Peng X, Liu C, Zheng P. Metal Organic Frameworks Modified Proton Exchange Membranes for Fuel Cells. Front Chem 2020; 8:694. [PMID: 32850683 PMCID: PMC7432281 DOI: 10.3389/fchem.2020.00694] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 07/06/2020] [Indexed: 01/04/2023] Open
Abstract
Proton exchange membrane fuel cells (PEMFCs) have received considerable interest due to their low operating temperature and high energy conversion rate. However, their practical implement suffers from significant performance challenge. In particular, proton exchange membrane (PEM) as the core component of PEMFCs, have shown a strong correlation between its properties (e.g., proton conductivity, dimensional stability) and the performance of fuel cells. Metal-organic frameworks (MOFs) as porous inorganic-organic hybrid materials have attracted extensive attention in gas storage, gas separation and reaction catalysis. Recently, the MOFs-modified PEMs have shown outstanding performance, which have great merit in commercial application. This manuscript presents an overview of the recent progress in the modification of PEMs with MOFs, with a special focus on the modification mechanism of MOFs on the properties of composite membranes. The characteristics of different types of MOFs in modified application were summarized.
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Affiliation(s)
- Quanyi Liu
- College of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Guanghan, China
| | - Zekun Li
- College of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Guanghan, China
| | - Donghui Wang
- College of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Guanghan, China
| | - Zhifa Li
- College of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Guanghan, China
| | - Xiaoliang Peng
- College of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Guanghan, China
| | - Chuanbang Liu
- College of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Guanghan, China
| | - Penglun Zheng
- College of Civil Aviation Safety Engineering, Civil Aviation Flight University of China, Guanghan, China
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28
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Magaz A, Ashton MD, Hathout RM, Li X, Hardy JG, Blaker JJ. Electroresponsive Silk-Based Biohybrid Composites for Electrochemically Controlled Growth Factor Delivery. Pharmaceutics 2020; 12:E742. [PMID: 32784563 PMCID: PMC7463593 DOI: 10.3390/pharmaceutics12080742] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 07/28/2020] [Accepted: 08/01/2020] [Indexed: 12/21/2022] Open
Abstract
Stimuli-responsive materials are very attractive candidates for on-demand drug delivery applications. Precise control over therapeutic agents in a local area is particularly enticing to regulate the biological repair process and promote tissue regeneration. Macromolecular therapeutics are difficult to embed for delivery, and achieving controlled release over long-term periods, which is required for tissue repair and regeneration, is challenging. Biohybrid composites incorporating natural biopolymers and electroconductive/active moieties are emerging as functional materials to be used as coatings, implants or scaffolds in regenerative medicine. Here, we report the development of electroresponsive biohybrid composites based on Bombyx mori silkworm fibroin and reduced graphene oxide that are electrostatically loaded with a high-molecular-weight therapeutic (i.e., 26 kDa nerve growth factor-β (NGF-β)). NGF-β-loaded composite films were shown to control the release of the drug over a 10-day period in a pulsatile fashion upon the on/off application of an electrical stimulus. The results shown here pave the way for personalized and biologically responsive scaffolds, coatings and implantable devices to be used in neural tissue engineering applications, and could be translated to other electrically sensitive tissues as well.
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Affiliation(s)
- Adrián Magaz
- Department of Materials and Henry Royce Institute, The University of Manchester, Manchester M13 9PL, UK;
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), Singapore 138634, Singapore
| | - Mark D. Ashton
- Department of Chemistry, Lancaster University, Lancaster LA1 4YB, UK;
| | - Rania M. Hathout
- Department of Pharmaceutics and Industrial Pharmacy, Faculty of Pharmacy, Ain Shams University, Cairo 11566, Egypt;
| | - Xu Li
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), Singapore 138634, Singapore
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - John G. Hardy
- Department of Chemistry, Lancaster University, Lancaster LA1 4YB, UK;
- Materials Science Institute, Lancaster University, Lancaster LA1 4YB, UK
| | - Jonny J. Blaker
- Department of Materials and Henry Royce Institute, The University of Manchester, Manchester M13 9PL, UK;
- Department of Biomaterials, Institute of Clinical Dentistry, University of Oslo, 0317 Oslo, Norway
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29
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Ma C, Dong J, Viviani M, Tulini I, Pontillo N, Maity S, Zhou Y, Roos WH, Liu K, Herrmann A, Portale G. De novo rational design of a freestanding, supercharged polypeptide, proton-conducting membrane. SCIENCE ADVANCES 2020; 6:eabc0810. [PMID: 32832651 PMCID: PMC7439445 DOI: 10.1126/sciadv.abc0810] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Accepted: 06/04/2020] [Indexed: 05/31/2023]
Abstract
Proton translocation enables important processes in nature and man-made technologies. However, controlling proton conduction and fabrication of devices exploiting biomaterials remains a challenge. Even more difficult is the design of protein-based bulk materials without any functional starting scaffold for further optimization. Here, we show the rational design of proton-conducting, protein materials exceeding reported proteinaceous systems. The carboxylic acid-rich structures were evolved step by step by exploring various sequences from intrinsically disordered coils over supercharged nanobarrels to hierarchically spider β sheet containing protein-supercharged polypeptide chimeras. The latter material is characterized by interconnected β sheet nanodomains decorated on their surface by carboxylic acid groups, forming self-supportive membranes and allowing for proton conduction in the hydrated state. The membranes showed an extraordinary proton conductivity of 18.5 ± 5 mS/cm at RH = 90%, one magnitude higher than other protein devices. This design paradigm offers great potential for bioprotonic device fabrication interfacing artificial and biological systems.
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Affiliation(s)
- Chao Ma
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun, China
- Polymer Chemistry and Bioengineering, Zernike Institute for Advanced Materials, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Jingjin Dong
- Macromolecular Chemistry and New Polymeric Materials, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG, The Netherlands
| | - Marco Viviani
- Macromolecular Chemistry and New Polymeric Materials, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG, The Netherlands
| | - Isotta Tulini
- Macromolecular Chemistry and New Polymeric Materials, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG, The Netherlands
| | - Nicola Pontillo
- Polymer Chemistry and Bioengineering, Zernike Institute for Advanced Materials, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Sourav Maity
- Molecular Biophysics, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Yu Zhou
- Polymer Chemistry and Bioengineering, Zernike Institute for Advanced Materials, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Wouter H. Roos
- Molecular Biophysics, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
| | - Kai Liu
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 130022 Changchun, China
- Department of Chemistry, Tsinghua University, 100084 Beijing, China
| | - Andreas Herrmann
- Polymer Chemistry and Bioengineering, Zernike Institute for Advanced Materials, Nijenborgh 4, 9747 AG Groningen, The Netherlands
- DWI–Leibniz Institute for Interactive Materials, Forckenbeckstr. 50, 52056 Aachen, Germany
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, 52074 Aachen, Germany
| | - Giuseppe Portale
- Macromolecular Chemistry and New Polymeric Materials, Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG, The Netherlands
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30
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Mondal S, Agam Y, Nandi R, Amdursky N. Exploring long-range proton conduction, the conduction mechanism and inner hydration state of protein biopolymers. Chem Sci 2020; 11:3547-3556. [PMID: 34109027 PMCID: PMC8152808 DOI: 10.1039/c9sc04392f] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 06/04/2020] [Accepted: 03/06/2020] [Indexed: 12/14/2022] Open
Abstract
Proteins are the main proton mediators in various biological proton circuits. Using proteins for the formation of long-range proton conductors is offering a bioinspired approach for proton conductive polymers. One of the main challenges in the field of proton conductors is to explore the local environment within the polymers, along with deciphering the conduction mechanism. Here, we show that the protonic conductivity across a protein-based biopolymer can be hindered using straightforward chemical modifications, targeting carboxylate- or amine-terminated residues of the protein, as well as exploring the effect of surface hydrophobicity on proton conduction. We further use the natural tryptophan residue as a local fluorescent probe for the inner local hydration state of the protein surface and its tendency to form hydrogen bonds with nearby water molecules, along with the dynamicity of the process. Our electrical and spectroscopic measurements of the different chemically-modified protein materials as well as the material at different water-aprotic solvent mixtures result in our fundamental understanding of the proton mediators within the material and gaining important insights on the proton conduction mechanism. Our biopolymer can be used as an attractive platform for the study of bio-related protonic circuits as well as a proton conducting biopolymer for various applications, such as protonic transistors, ionic transducers and fuel cells.
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Affiliation(s)
- Somen Mondal
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology Haifa 3200003 Israel
| | - Yuval Agam
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology Haifa 3200003 Israel
| | - Ramesh Nandi
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology Haifa 3200003 Israel
| | - Nadav Amdursky
- Schulich Faculty of Chemistry, Technion - Israel Institute of Technology Haifa 3200003 Israel
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31
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Silberbush O, Engel M, Sivron I, Roy S, Ashkenasy N. Self-Assembled Peptide Nanotube Films with High Proton Conductivity. J Phys Chem B 2019; 123:9882-9888. [DOI: 10.1021/acs.jpcb.9b07555] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Ohad Silberbush
- Department of Materials Engineering and Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, P.O.B. 653, Beer-Sheva 84105, Israel
| | - Maor Engel
- Department of Materials Engineering and Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, P.O.B. 653, Beer-Sheva 84105, Israel
| | - Ido Sivron
- Department of Materials Engineering and Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, P.O.B. 653, Beer-Sheva 84105, Israel
| | - Subhasish Roy
- Department of Materials Engineering and Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, P.O.B. 653, Beer-Sheva 84105, Israel
| | - Nurit Ashkenasy
- Department of Materials Engineering and Ilse Katz Institute for Nanoscale Science and Technology, Ben-Gurion University of the Negev, P.O.B. 653, Beer-Sheva 84105, Israel
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32
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Geometric and Electronic Structure Contributions to O-O Cleavage and the Resultant Intermediate Generated in Heme-Copper Oxidases. J Am Chem Soc 2019; 141:10068-10081. [PMID: 31146528 DOI: 10.1021/jacs.9b04271] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
This study investigates the mechanism of O-O bond cleavage in heme-copper oxidase (HCO) enzymes, combining experimental and computational insights from enzyme intermediates and synthetic models. It is determined that HCOs undergo a proton-initiated O-O cleavage mechanism where a single water molecule in the active site enables proton transfer (PT) from the cross-linked tyrosine to a peroxo ligand bridging the heme FeIII and CuII, and multiple H-bonding interactions lower the tyrosine p Ka. Due to sterics within the active site, the proton must either transfer initially to the O(Fe) (a high-energy intermediate), or from another residue over a ∼10 Å distance to reach the O(Cu) atom directly. While the distance between the H+ donor (Tyr) and acceptor (O(Cu)) results in a barrier to PT, this separation is critical for the low barrier to O-O cleavage as it enhances backbonding from Fe into the O22- σ* orbital. Thus, PT from Tyr precedes O-O elongation and is rate-limiting, consistent with available kinetic data. The electron transfers from tyrosinate after the barrier via a superexchange pathway provided by the cross-link, generating intermediate PM. PM is evaluated using available experimental data. The geometric structure contains an FeIV═O that is H-bonded to the CuII-OH. The electronic structure is a singlet, where the FeIV and CuII are antiferromagnetically coupled through the H-bond between the oxo(Fe) and hydroxo(Cu) ligands, while the CuII and Tyr• are ferromagnetically coupled due their delocalization into orthogonal magnetic orbitals on the cross-linked His residue. These findings provide critical insights into the mechanism of efficient O2 reduction in HCOs, and the nature of the PM intermediate that couples this reaction to proton pumping.
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33
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Selberg J, Jia M, Rolandi M. Proton conductivity of glycosaminoglycans. PLoS One 2019; 14:e0202713. [PMID: 30849116 PMCID: PMC6407855 DOI: 10.1371/journal.pone.0202713] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2018] [Accepted: 02/15/2019] [Indexed: 12/24/2022] Open
Abstract
Proton conductivity is important in many natural phenomena including oxidative phosphorylation in mitochondria and archaea, uncoupling membrane potentials by the antibiotic Gramicidin, and proton actuated bioluminescence in dinoflagellate. In all of these phenomena, the conduction of protons occurs along chains of hydrogen bonds between water and hydrophilic residues. These chains of hydrogen bonds are also present in many hydrated biopolymers and macromolecule including collagen, keratin, chitosan, and various proteins such as reflectin. All of these materials are also proton conductors. Recently, our group has discovered that the jelly found in the Ampullae of Lorenzini- shark’s electro-sensing organs- is the highest naturally occurring proton conducting substance. The jelly has a complex composition, but we proposed that the conductivity is due to the glycosaminoglycan keratan sulfate (KS). Here we measure the proton conductivity of hydrated keratan sulfate purified from Bovine Cornea. PdHx contacts at 0.50 ± 0.11 mS cm -1, which is consistent to that of Ampullae of Lorenzini jelly at 2 ± 1 mS cm -1. Proton conductivity, albeit with lower values, is also shared by other glycosaminoglycans with similar chemical structures including dermatan sulfate, chondroitin sulfate A, heparan sulfate, and hyaluronic acid. This observation supports the relationship between proton conductivity and the chemical structure of biopolymers.
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Affiliation(s)
- John Selberg
- Department of Electrical Engineering, University of California, Santa Cruz, CA, United States of America
| | - Manping Jia
- Department of Electrical Engineering, University of California, Santa Cruz, CA, United States of America
| | - Marco Rolandi
- Department of Electrical Engineering, University of California, Santa Cruz, CA, United States of America
- * E-mail:
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34
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Carter NA, Grove TZ. Functional protein materials: beyond elastomeric and structural proteins. Polym Chem 2019. [DOI: 10.1039/c9py00337a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In the past two decades researchers have shown great interest in mimicking biological structures and their complex structure–property relationships. Herein we highlight examples of hydrogels and bioelectronic materials that illustrate the rational design of material properties and function.
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Affiliation(s)
- Nathan A. Carter
- Department of Mechanical Engineering
- University of Minnesota
- Minneapolis
- USA
| | - Tijana Z. Grove
- Department of Chemistry
- Virginia Tech
- Blacksburg
- USA
- Zarkovic Grove Consulting
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35
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Motovilov KA, Grinenko V, Savinov M, Gagkaeva ZV, Kadyrov LS, Pronin AA, Bedran ZV, Zhukova ES, Mostert AB, Gorshunov BP. Redox chemistry in the pigment eumelanin as a function of temperature using broadband dielectric spectroscopy. RSC Adv 2019; 9:3857-3867. [PMID: 35518099 PMCID: PMC9060503 DOI: 10.1039/c8ra09093a] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 01/22/2019] [Indexed: 12/12/2022] Open
Abstract
We demonstrate on synthetic eumelanin that biomolecular conductivity models should account for temperature and hydration effects coherently.
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Affiliation(s)
| | - V. Grinenko
- Institute for Solid State and Materials Physics
- TU Dresden
- Dresden
- Germany
- Institute for Metallic Materials
| | - M. Savinov
- Institute of Physics AS CR
- Praha 8
- Czech Republic
| | | | | | - A. A. Pronin
- Prokhorov General Physics Institute of the Russian Academy of Sciences
- Moscow
- Russia
| | - Z. V. Bedran
- Moscow Institute of Physics and Technology
- Russia
| | - E. S. Zhukova
- Moscow Institute of Physics and Technology
- Russia
- Prokhorov General Physics Institute of the Russian Academy of Sciences
- Moscow
- Russia
| | | | - B. P. Gorshunov
- Moscow Institute of Physics and Technology
- Russia
- Prokhorov General Physics Institute of the Russian Academy of Sciences
- Moscow
- Russia
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36
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Amdursky N, Głowacki ED, Meredith P. Macroscale Biomolecular Electronics and Ionics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1802221. [PMID: 30334284 DOI: 10.1002/adma.201802221] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Revised: 06/25/2018] [Indexed: 05/18/2023]
Abstract
The conduction of ions and electrons over multiple length scales is central to the processes that drive the biological world. The multidisciplinary attempts to elucidate the physics and chemistry of electron, proton, and ion transfer in biological charge transfer have focused primarily on the nano- and microscales. However, recently significant progress has been made on biomolecular materials that can support ion and electron currents over millimeters if not centimeters. Likewise, similar transport phenomena in organic semiconductors and ionics have led to new innovations in a wide variety of applications from energy generation and storage to displays and bioelectronics. Here, the underlying principles of conduction on the macroscale in biomolecular materials are discussed, highlighting recent examples, and particularly the establishment of accurate structure-property relationships to guide rationale material and device design. The technological viability of biomolecular electronics and ionics is also discussed.
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Affiliation(s)
- Nadav Amdursky
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology, Haifa, 3200003, Israel
| | - Eric Daniel Głowacki
- Laboratory of Organic Electronics, Department of Science and Technology, Linköping University, Bredgatan 33, SE-60174, Norrköping, Sweden
- Wallenberg Centre for Molecular Medicine, Linköping University, 58183, Linköping, Sweden
| | - Paul Meredith
- Department of Physics, Swansea University, Singleton Park, Swansea, SA2 8PP, Wales, UK
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37
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Jia W, Wu P. Fast Proton Conduction in Denatured Bovine Serum Albumin-Coated Nafion Membranes. ACS APPLIED MATERIALS & INTERFACES 2018; 10:39768-39776. [PMID: 30387596 DOI: 10.1021/acsami.8b14587] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Bovine serum albumin (BSA) is a globular soluble protein, which has been extensively used in biochemical engineering. BSA materials possess abundant hydrophilic charged amino acids, H-bonded networks, and various secondary structures, which has great potential in facilitating proton transfer. Herein, BSA-N117 (BSA-Nafion 117) membranes are conveniently and eco-friendly prepared by utilizing the adsorption and denaturation of BSA on the Nafion 117 surface. The morphology and secondary structures of the BSA layer are studied with field-emission scanning electron microscopy, atomic force microscopy, and Fourier transform infrared spectroscopy. BSA-N117 membranes show highly increased proton conductivity under various conditions, which could be attributed to the improved wettability, water uptake, and the denaturation of BSA. The in-plane proton conductivity of BSA-N117-5 reaches 0.3 and 0.06 S cm-1 under 80 °C-95% RH and 100 °C-40% RH, respectively. The denaturation of BSA leads to the unfolding of α-helix structures and the formation of β-sheet structures. β-Sheet structures are more beneficial to proton conduction since β-sheet structures have stronger interactions with water molecules and protons could transport more directly in the parallel H-bonded network. Moreover, the denatured BSA modification layer could effectively help BSA-N117 membranes to possess higher selectivity and overcome the "trade-off" effect between proton conductivity and methanol resistance. The methanol permeability of BSA-N117 membranes is 1 order of magnitude lower than that of Nafion 117.
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Affiliation(s)
- Wei Jia
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science , Fudan University , Shanghai 200433 , P. R. China
| | - Peiyi Wu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science , Fudan University , Shanghai 200433 , P. R. China
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38
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Khalily MA, Usta H, Ozdemir M, Bakan G, Dikecoglu FB, Edwards-Gayle C, Hutchinson JA, Hamley IW, Dana A, Guler MO. The design and fabrication of supramolecular semiconductor nanowires formed by benzothienobenzothiophene (BTBT)-conjugated peptides. NANOSCALE 2018; 10:9987-9995. [PMID: 29774920 DOI: 10.1039/c8nr01604f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
π-Conjugated small molecules based on a [1]benzothieno[3,2-b]benzothiophene (BTBT) unit are of great research interest in the development of solution-processable semiconducting materials owing to their excellent charge-transport characteristics. However, the BTBT π-core has yet to be demonstrated in the form of electro-active one-dimensional (1D) nanowires that are self-assembled in aqueous media for potential use in bioelectronics and tissue engineering. Here we report the design, synthesis, and self-assembly of benzothienobenzothiophene (BTBT)-peptide conjugates, the BTBT-peptide (BTBT-C3-COHN-Ahx-VVAGKK-Am) and the C8-BTBT-peptide (C8-BTBT-C3-COHN-Ahx-VVAGKK-Am), as β-sheet forming amphiphilic molecules, which self-assemble into highly uniform nanofibers in water with diameters of 11-13(±1) nm and micron-size lengths. Spectroscopic characterization studies demonstrate the J-type π-π interactions among the BTBT molecules within the hydrophobic core of the self-assembled nanofibers yielding an electrical conductivity as high as 6.0 × 10-6 S cm-1. The BTBT π-core is demonstrated, for the first time, in the formation of self-assembled peptide 1D nanostructures in aqueous media for potential use in tissue engineering, bioelectronics and (opto)electronics. The conductivity achieved here is one of the highest reported to date in a non-doped state.
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Affiliation(s)
- Mohammad Aref Khalily
- Institute of Materials Science and Nanotechnology and National Nanotechnology Research Center (UNAM), Bilkent University, Ankara, 06800, Turkey
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Carter NA, Grove TZ. Protein Self-Assemblies That Can Generate, Hold, and Discharge Electric Potential in Response to Changes in Relative Humidity. J Am Chem Soc 2018; 140:7144-7151. [DOI: 10.1021/jacs.8b02663] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Nathan A. Carter
- Department of Chemistry, Macromolecules Innovations Institute, and The Virginia Tech Center for Sustainable Nanotechnology, Virginia Tech 900 West Campus Drive, Blacksburg, Virginia 24061, United States
| | - Tijana Z. Grove
- Department of Chemistry, Macromolecules Innovations Institute, and The Virginia Tech Center for Sustainable Nanotechnology, Virginia Tech 900 West Campus Drive, Blacksburg, Virginia 24061, United States
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Mostert AB, Rienecker SB, Noble C, Hanson GR, Meredith P. The photoreactive free radical in eumelanin. SCIENCE ADVANCES 2018; 4:eaaq1293. [PMID: 29600273 PMCID: PMC5873843 DOI: 10.1126/sciadv.aaq1293] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 02/13/2018] [Indexed: 05/12/2023]
Abstract
Melanin is the primary photoprotecting pigment in humans as well as being implicated in the development of deadly melanoma. The material also conducts electricity and has thus become a bioelectronic model for proton-to-electron transduction. Central to these phenomena are its spin properties-notably two linked species derived from carbon-centered and semiquinone radicals. Using a novel in situ photoinduced electron paramagnetic resonance technique with simultaneous electrical measurements, we have elucidated for the first time the distinct photoreactivity of the two different radical species. We find that the production of the semiquinone is light- and water-driven, explaining the electrical properties and revealing biologically relevant photoreactivity.
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Affiliation(s)
- Albertus B. Mostert
- Department of Chemistry, Swansea University, Singleton Park, Swansea, Wales SA2 8PP, UK
| | - Shermiyah B. Rienecker
- Centre for Advanced Imaging, University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
- School of Chemistry and Molecular Biosciences, University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
| | - Christopher Noble
- Centre for Advanced Imaging, University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
| | - Graeme R. Hanson
- Centre for Advanced Imaging, University of Queensland, St Lucia, Brisbane, Queensland 4072, Australia
| | - Paul Meredith
- Department of Physics, Swansea University, Singleton Park, Swansea, Wales SA2 8PP, UK
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Amit M, Roy S, Deng Y, Josberger E, Rolandi M, Ashkenasy N. Measuring Proton Currents of Bioinspired Materials with Metallic Contacts. ACS APPLIED MATERIALS & INTERFACES 2018; 10:1933-1938. [PMID: 29265803 DOI: 10.1021/acsami.7b16640] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Charge transfer at the interface between the active layer and the contact is essential in any device. Transfer of electronic charges across the contact/active layer interface with metal contacts is well-understood. To this end, noble metals, such as gold or platinum, are widely used. With these contacts, ionic currents (especially protonic) are often neglected because ions and protons do not transfer across the interface between the contact and the active layer. Palladium hydride contacts have emerged as good contacts to measure proton currents because of a reversible redox reaction at the interface and subsequent absorption/desorption of H into palladium, translating the proton flow reaching the interface into an electron flow at the outer circuit. Here, we demonstrate that gold and palladium contacts also collect proton currents, especially under high relative humidity conditions because of electrochemical reactions at the interface. A marked kinetic isotope effect, which is a signature of proton currents, is observed with gold and palladium contacts, indicating both bulk and contact processes involving proton transfer. These phenomena are attributed to electrochemical processes involving water splitting at the interface. In addition to promoting charge transfer at the interface, these interfacial electrochemical processes inject charge carriers into the active layer and hence can also modulate the bulk resistivity of the materials, as was found for the studied peptide fibril films. We conclude that proton currents may not be neglected a priori when performing electronic measurements on biological and bioinspired materials with gold and palladium contacts under high humidity conditions.
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Affiliation(s)
| | | | - Yingxin Deng
- Department of Materials Science and Engineering, University of Washington , Seattle, Washington 98195, United States
| | - Erik Josberger
- Department of Materials Science and Engineering, University of Washington , Seattle, Washington 98195, United States
| | - Marco Rolandi
- Department of Materials Science and Engineering, University of Washington , Seattle, Washington 98195, United States
- Department of Electrical Engineering, University of California , Santa Cruz, California 95064, United States
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Guo Y, Jiang Z, Ying W, Chen L, Liu Y, Wang X, Jiang ZJ, Chen B, Peng X. A DNA-Threaded ZIF-8 Membrane with High Proton Conductivity and Low Methanol Permeability. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:1705155. [PMID: 29193330 DOI: 10.1002/adma.201705155] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Indexed: 06/07/2023]
Abstract
Natural biomolecules have potential as proton-conducting materials, in which the hydrogen-bond networks can facilitate proton transportation. Herein, a biomolecule/metal-organic framework (MOF) approach to develop hybrid proton-conductive membranes is reported. Single-strand DNA molecules are introduced into DNA@ZIF-8 membranes through a solid-confined conversion process. The DNA-threaded ZIF-8 membrane exhibits high proton conductivity of 3.40 × 10-4 S cm-1 at 25 °C and the highest one ever reported of 0.17 S cm-1 at 75 °C, under 97% relatively humidity, attributed to the formed hydrogen-bond networks between the DNA molecules and the water molecules inside the cavities of the ZIF-8, but very low methanol permeability of 1.25 × 10-8 cm2 s-1 due to the small pore entrance of the DNA@ZIF-8 membranes. The selectivity of the DNA@ZIF-8 membrane is thus significantly higher than that of developed proton-exchange membranes for fuel cells. After assembling the DNA@ZIF-8 hybrid membrane into direct methanol fuel cells, it exhibits a power density of 9.87 mW cm-2 . This is the first MOF-based proton-conductivity membrane used for direct methanol fuel cells, providing bright promise for such hybrid membranes in this application.
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Affiliation(s)
- Yi Guo
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Zhongqing Jiang
- Department of Materials and Chemical Engineering, Ningbo University of Technology, Ningbo, 315211, Zhejiang, China
| | - Wen Ying
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Liping Chen
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Yazhi Liu
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Xiaobin Wang
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
| | - Zhong-Jie Jiang
- Guangzhou Key Laboratory for Surface Chemistry of Energy Materials, New Energy Research Institute, College of Environment and Energy, South China University of Technology, Guangzhou, 510006, China
| | - Banglin Chen
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
- Department of Chemistry, University of Texas at San Antonio, One UTSA Circle, San Antonio, TX, 78249-0698, USA
| | - Xinsheng Peng
- State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou, 310027, China
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Amdursky N, Wang X, Meredith P, Riley DJ, Payne DJ, Bradley DDC, Stevens MM. Electron Hopping Across Hemin-Doped Serum Albumin Mats on Centimeter-Length Scales. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2017; 29:1700810. [PMID: 28561988 PMCID: PMC5788260 DOI: 10.1002/adma.201700810] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Revised: 03/30/2017] [Indexed: 05/22/2023]
Abstract
Exploring long-range electron transport across protein assemblies is a central interest in both the fundamental research of biological processes and the emerging field of bioelectronics. This work examines the use of serum-albumin-based freestanding mats as macroscopic electron mediators in bioelectronic devices. In particular, this study focuses on how doping the protein mat with hemin improves charge-transport. It is demonstrated that doping can increase conductivity 40-fold via electron hopping between adjacent hemin molecules, resulting in the highest measured conductance for a protein-based material yet reported, and transport over centimeter length scales. The use of distance-dependent AC impedance and DC current-voltage measurements allows the contribution from electron hopping between adjacent hemin molecules to be isolated. Because the hemin-doped serum albumin mats have both biocompatibility and fabrication simplicity, they should be applicable to a range of bioelectronic devices of varying sizes, configurations, and applications.
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Affiliation(s)
- Nadav Amdursky
- Department of MaterialsDepartment of Bioengineering and Institute of Biomedical EngineeringImperial College LondonLondonSW7 2AZUK
- Schulich Faculty of ChemistryTechnion – Israel Institute of TechnologyHaifa3200003Israel
| | - Xuhua Wang
- Department of Physics and Centre for Plastic ElectronicsImperial College LondonLondonSW7 2AZUK
| | - Paul Meredith
- Department of PhysicsSwansea UniversitySingleton ParkSwanseaSA2 8PPWalesUK
| | - D. Jason Riley
- Department of MaterialsImperial College LondonLondonSW7 2AZUK
| | - David J. Payne
- Department of MaterialsImperial College LondonLondonSW7 2AZUK
| | - Donal D. C. Bradley
- Department of Physics and Centre for Plastic ElectronicsImperial College LondonLondonSW7 2AZUK
- Departments of Engineering Science & Physics Mathematical, Physical and Life Sciences DivisionUniversity of OxfordOxfordOX1 3PDUK
| | - Molly M. Stevens
- Department of MaterialsDepartment of Bioengineering and Institute of Biomedical EngineeringImperial College LondonLondonSW7 2AZUK
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Nagarkar SS, Horike S, Itakura T, Le Ouay B, Demessence A, Tsujimoto M, Kitagawa S. Enhanced and Optically Switchable Proton Conductivity in a Melting Coordination Polymer Crystal. Angew Chem Int Ed Engl 2017; 56:4976-4981. [DOI: 10.1002/anie.201700962] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Indexed: 01/06/2023]
Affiliation(s)
- Sanjog S. Nagarkar
- Institute for Integrated Cell-Material Sciences (iCeMS); Kyoto University, Yoshida, Sakyo-ku; Kyoto 606-8501 Japan
| | - Satoshi Horike
- Institute for Integrated Cell-Material Sciences (iCeMS); Kyoto University, Yoshida, Sakyo-ku; Kyoto 606-8501 Japan
| | - Tomoya Itakura
- DENSO Corporation; 1-1, Showa-cho Kariya Aichi 448-8661 Japan
| | - Benjamin Le Ouay
- Department of Synthetic Chemistry and Biological Chemistry; Graduate School of Engineering; Kyoto University, Katsura, Nishikyo-ku; Kyoto 615-8510 Japan
| | - Aude Demessence
- Institut de Recherches sur la Catalyse et l'Environnement de Lyon (IRCELYON), UMR CNRS 5256; Université Claude Bernard Lyon 1; Villeurbanne France
| | - Masahiko Tsujimoto
- Institute for Integrated Cell-Material Sciences (iCeMS); Kyoto University, Yoshida, Sakyo-ku; Kyoto 606-8501 Japan
| | - Susumu Kitagawa
- Institute for Integrated Cell-Material Sciences (iCeMS); Kyoto University, Yoshida, Sakyo-ku; Kyoto 606-8501 Japan
- Department of Synthetic Chemistry and Biological Chemistry; Graduate School of Engineering; Kyoto University, Katsura, Nishikyo-ku; Kyoto 615-8510 Japan
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Nagarkar SS, Horike S, Itakura T, Le Ouay B, Demessence A, Tsujimoto M, Kitagawa S. Enhanced and Optically Switchable Proton Conductivity in a Melting Coordination Polymer Crystal. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700962] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Sanjog S. Nagarkar
- Institute for Integrated Cell-Material Sciences (iCeMS); Kyoto University, Yoshida, Sakyo-ku; Kyoto 606-8501 Japan
| | - Satoshi Horike
- Institute for Integrated Cell-Material Sciences (iCeMS); Kyoto University, Yoshida, Sakyo-ku; Kyoto 606-8501 Japan
| | - Tomoya Itakura
- DENSO Corporation; 1-1, Showa-cho Kariya Aichi 448-8661 Japan
| | - Benjamin Le Ouay
- Department of Synthetic Chemistry and Biological Chemistry; Graduate School of Engineering; Kyoto University, Katsura, Nishikyo-ku; Kyoto 615-8510 Japan
| | - Aude Demessence
- Institut de Recherches sur la Catalyse et l'Environnement de Lyon (IRCELYON), UMR CNRS 5256; Université Claude Bernard Lyon 1; Villeurbanne France
| | - Masahiko Tsujimoto
- Institute for Integrated Cell-Material Sciences (iCeMS); Kyoto University, Yoshida, Sakyo-ku; Kyoto 606-8501 Japan
| | - Susumu Kitagawa
- Institute for Integrated Cell-Material Sciences (iCeMS); Kyoto University, Yoshida, Sakyo-ku; Kyoto 606-8501 Japan
- Department of Synthetic Chemistry and Biological Chemistry; Graduate School of Engineering; Kyoto University, Katsura, Nishikyo-ku; Kyoto 615-8510 Japan
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Josberger EE, Hassanzadeh P, Deng Y, Sohn J, Rego MJ, Amemiya CT, Rolandi M. Proton conductivity in ampullae of Lorenzini jelly. SCIENCE ADVANCES 2016; 2:e1600112. [PMID: 27386543 PMCID: PMC4928922 DOI: 10.1126/sciadv.1600112] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2016] [Accepted: 04/11/2016] [Indexed: 05/20/2023]
Abstract
In 1678, Stefano Lorenzini first described a network of organs of unknown function in the torpedo ray-the ampullae of Lorenzini (AoL). An individual ampulla consists of a pore on the skin that is open to the environment, a canal containing a jelly and leading to an alveolus with a series of electrosensing cells. The role of the AoL remained a mystery for almost 300 years until research demonstrated that skates, sharks, and rays detect very weak electric fields produced by a potential prey. The AoL jelly likely contributes to this electrosensing function, yet the exact details of this contribution remain unclear. We measure the proton conductivity of the AoL jelly extracted from skates and sharks. The room-temperature proton conductivity of the AoL jelly is very high at 2 ± 1 mS/cm. This conductivity is only 40-fold lower than the current state-of-the-art proton-conducting polymer Nafion, and it is the highest reported for a biological material so far. We suggest that keratan sulfate, identified previously in the AoL jelly and confirmed here, may contribute to the high proton conductivity of the AoL jelly with its sulfate groups-acid groups and proton donors. We hope that the observed high proton conductivity of the AoL jelly may contribute to future studies of the AoL function.
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Affiliation(s)
- Erik E. Josberger
- Department of Electrical Engineering, University of Washington, Seattle, WA 98195, USA
- Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA
| | - Pegah Hassanzadeh
- Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA
- Department of Electrical Engineering, University of California, Santa Cruz, Santa Cruz, CA 95064, USA
| | - Yingxin Deng
- Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA
| | - Joel Sohn
- Department of Electrical Engineering, University of California, Santa Cruz, Santa Cruz, CA 95064, USA
- Department of Molecular and Cellular Biology, Harvard University, Cambridge, MA 02138, USA
| | | | - Chris T. Amemiya
- Benaroya Research Institute, Seattle, WA 98101, USA
- Department of Biology, University of Washington, Seattle, WA 98195, USA
| | - Marco Rolandi
- Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA
- Department of Electrical Engineering, University of California, Santa Cruz, Santa Cruz, CA 95064, USA
- Corresponding author.
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