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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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Song MK, Song YW, Sung T, Namgung SD, Yoon JH, Lee YS, Nam KT, Kwon JY. Synaptic transistors based on a tyrosine-rich peptide for neuromorphic computing. RSC Adv 2021; 11:39619-39624. [PMID: 35494131 PMCID: PMC9044548 DOI: 10.1039/d1ra06492d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Accepted: 11/29/2021] [Indexed: 12/12/2022] Open
Abstract
In this article, we propose an artificial synaptic device based on a proton-conducting peptide material. By using the redox-active property of tyrosine, the Tyr–Tyr–Ala–Cys–Ala–Tyr–Tyr peptide film was utilized as a gate insulator that shows synaptic plasticity owing to the formation of proton electric double layers. The ion gating effects on the transfer characteristics and temporal current responses are shown. Further, timing-dependent responses, including paired-pulse facilitation, synaptic potentiation, and transition from short-term plasticity to long-term plasticity, have been demonstrated for the electrical emulation of biological synapses in the human brain. Herein, we provide a novel material platform that is bio-inspired and biocompatible for use in brain-mimetic electronic devices. In this article, we propose an artificial synaptic device based on a proton-conducting peptide material.![]()
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Affiliation(s)
- Min-Kyu Song
- School of Integrated Technology, Yonsei University, Incheon 21983, Republic of Korea
| | - Young-Woong Song
- School of Integrated Technology, Yonsei University, Incheon 21983, Republic of Korea
| | - Taehoon Sung
- School of Integrated Technology, Yonsei University, Incheon 21983, Republic of Korea
| | - Seok Daniel Namgung
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
- Soft Foundry, Seoul National University, Seoul 08826, Republic of Korea
| | - Jeong Hyun Yoon
- School of Integrated Technology, Yonsei University, Incheon 21983, Republic of Korea
| | - Yoon-Sik Lee
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Ki Tae Nam
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
- Soft Foundry, Seoul National University, Seoul 08826, Republic of Korea
| | - Jang-Yeon Kwon
- School of Integrated Technology, Yonsei University, Incheon 21983, Republic of Korea
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Song MK, Namgung SD, Choi D, Kim H, Seo H, Ju M, Lee YH, Sung T, Lee YS, Nam KT, Kwon JY. Proton-enabled activation of peptide materials for biological bimodal memory. Nat Commun 2020; 11:5896. [PMID: 33214548 PMCID: PMC7677316 DOI: 10.1038/s41467-020-19750-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Accepted: 10/29/2020] [Indexed: 02/06/2023] Open
Abstract
The process of memory and learning in biological systems is multimodal, as several kinds of input signals cooperatively determine the weight of information transfer and storage. This study describes a peptide-based platform of materials and devices that can control the coupled conduction of protons and electrons and thus create distinct regions of synapse-like performance depending on the proton activity. We utilized tyrosine-rich peptide-based films and generalized our principles by demonstrating both memristor and synaptic devices. Interestingly, even memristive behavior can be controlled by both voltage and humidity inputs, learning and forgetting process in the device can be initiated and terminated by protons alone in peptide films. We believe that this work can help to understand the mechanism of biological memory and lay a foundation to realize a brain-like device based on ions and electrons. The structural programmability and functionality of peptide materials can be leverage for various next-generation devices such as non-volatile memories. The authors report a proton-coupled mechanism in tyrosine-rich peptides for realizing multimodal memory devices.
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Affiliation(s)
- Min-Kyu Song
- School of Integrated Technology, Yonsei University, Incheon, 21983, Republic of Korea
| | - Seok Daniel Namgung
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Daehwan Choi
- School of Integrated Technology, Yonsei University, Incheon, 21983, Republic of Korea
| | - Hyeohn Kim
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Hongmin Seo
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Misong Ju
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Yoon Ho Lee
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea
| | - Taehoon Sung
- School of Integrated Technology, Yonsei University, Incheon, 21983, Republic of Korea
| | - Yoon-Sik Lee
- School of Chemical and Biological Engineering, Nano Systems Institute, Seoul National University, Seoul, 08826, Republic of Korea
| | - Ki Tae Nam
- Department of Materials Science and Engineering, Seoul National University, Seoul, 08826, Republic of Korea.
| | - Jang-Yeon Kwon
- School of Integrated Technology, Yonsei University, Incheon, 21983, Republic of Korea.
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