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Xu L, Pan Y, Wang X, Xu Z, Tian H, Liu Y, Bu X, Jing H, Wang T, Liu Y, Liu M. Reconfigurable Touch Panel Based on a Conductive Thixotropic Supramolecular Hydrogel. ACS APPLIED MATERIALS & INTERFACES 2023; 15:4458-4468. [PMID: 36629334 DOI: 10.1021/acsami.2c18471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Touch panels based on ionic conductive hydrogels perform excellent flexibility and biocompatibility, becoming promising candidates for the next-generation human-machine interface. However, these ionic hydrogels are usually composed of cross-linked polymeric networks that are difficult to be recycled or reconfigured, resulting in environmental issues. Herein, we designed a lithium ion-triggered gelation strategy to provide a conductive molecular hydrogel with thixotropy, which can be mechanically recycled or reconfigured at room temperature. In this hydrogel, lithium ions function as ionic bridges to construct supramolecular nanoassemblies and charge carriers to impart ionic conductivity. With polymer additives, the mechanical accommodability of the hydrogel was improved to meet the requirements of the daily use of touch panels. When this molecular hydrogel was fabricated into a surface capacitive touch panel, real-time sensing and reliable touch locating abilities were achieved. Remarkably, this touch panel can be reconfigured into 1D, 2D, and 3D device structures by a simple stirring-remolding method under ambient conditions. This work brings new insight into enriching the functionalities of hydrogel-based ionotronics with a supramolecular approach.
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Affiliation(s)
- Lin Xu
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong250100, China
- Suzhou Research Institute of Shandong University, Suzhou, Jiangsu215123, China
| | - Ying Pan
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong250100, China
| | - Xuanqi Wang
- School of Software, Shandong University, Jinan, Shandong250101, China
| | - Zhijun Xu
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong250100, China
| | - Huasheng Tian
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong250100, China
- Suzhou Research Institute of Shandong University, Suzhou, Jiangsu215123, China
| | - Yue Liu
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong250100, China
- Suzhou Research Institute of Shandong University, Suzhou, Jiangsu215123, China
| | - Xiaodan Bu
- School of Chemistry and Life Science, Changchun University of Technology, Changchun, Jilin130012, China
| | - Houchao Jing
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong250100, China
- Suzhou Research Institute of Shandong University, Suzhou, Jiangsu215123, China
| | - Tianyu Wang
- Beijing Key Laboratory for Science and Application of Functional Molecular and Crystalline Materials, Department of Chemistry, University of Science and Technology Beijing, Beijing100083, China
| | - Yaqing Liu
- Key Laboratory of Colloid and Interface Chemistry of the Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, Shandong250100, China
- Suzhou Research Institute of Shandong University, Suzhou, Jiangsu215123, China
| | - Minghua Liu
- CAS Key Laboratory of Colloid Interface and Chemical Thermodynamics, Institute of Chemistry, Chinese Academy of Sciences, No. 2 ZhongGuanCun BeiYiJie, Beijing100190, China
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Ishiuchi SI, Sasaki Y, Lisy JM, Fujii M. Ion-peptide interactions between alkali metal ions and a termini-protected dipeptide: modeling a portion of the selectivity filter in K + channels. Phys Chem Chem Phys 2019; 21:561-571. [PMID: 30351321 DOI: 10.1039/c8cp05839c] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Potassium channels have the unique ability to allow the selective passage of potassium ions at near diffusion-free rates while inhibiting the passage of more abundant sodium ions. Local interactions between chemical functional groups and the ions are responsible for both selectivity and transport. As an initial step in characterizing these interactions, the structures of Na+ and K+ complexed to the Ac-Tyr-NHMe peptide have been determined from infrared laser spectroscopy and supporting ab initio calculations. Ac-Tyr-NHMe, a termini-protected peptide sequence, replicates the GYG portion of one of the four peptide chains comprising the selectivity filter of a K+ channel. This peptide contains two carbonyl groups, among the eight C[double bond, length as m-dash]O groups forming the S1 binding site of the selectivity filter. Three conformations have been identified for both ions by laser IR-IR double resonance methods. Two conformations have the ion bound to the two C[double bond, length as m-dash]O groups. The third conformation has, in addition, a cation-π interaction with the aromatic ring of tyrosine, i.e. tridentate binding. The relative contributions of the three conformers are approximately the same for K+Ac-Tyr-NHMe, while the tridentate conformer is preferred for Na+Ac-Tyr-NHMe. These differences will be discussed in the context of ion mobility and selectivity.
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Affiliation(s)
- Shun-Ichi Ishiuchi
- Laboratory for Chemistry and Life Science, Tokyo Institute of Technology, Yokohama 226-8503, Japan.
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Bell MR, Cruzeiro VWD, Cismesia AP, Tesler LF, Roitberg AE, Polfer NC. Probing the Structures of Solvent-Complexed Ions Formed in Electrospray Ionization Using Cryogenic Infrared Photodissociation Spectroscopy. J Phys Chem A 2018; 122:7427-7436. [DOI: 10.1021/acs.jpca.8b05896] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Matthew R. Bell
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200, United States
| | - Vinícius Wilian D. Cruzeiro
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200, United States
| | - Adam P. Cismesia
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200, United States
| | - Larry F. Tesler
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200, United States
| | - Adrian E. Roitberg
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200, United States
| | - Nicolas C. Polfer
- Department of Chemistry, University of Florida, P.O. Box 117200, Gainesville, Florida 32611-7200, United States
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Klyne J, Bouchet A, Ishiuchi SI, Fujii M, Schneider M, Baldauf C, Dopfer O. Probing chirality recognition of protonated glutamic acid dimers by gas-phase vibrational spectroscopy and first-principles simulations. Phys Chem Chem Phys 2018; 20:28452-28464. [DOI: 10.1039/c8cp05855e] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We characterize stereospecific aspects of homochiral and heterochiral dimers of glutamic acid by infrared spectroscopy and first-principles molecular dynamics simulations.
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Affiliation(s)
- Johanna Klyne
- Institut für Optik und Atomare Physik
- Technische Universität Berlin
- 10623 Berlin
- Germany
| | - Aude Bouchet
- Laboratory for Chemistry and Life Science
- Institute of Innovation Research
- Tokyo Institute of Technology
- Yokohama
- Japan
| | - Shun-ichi Ishiuchi
- Laboratory for Chemistry and Life Science
- Institute of Innovation Research
- Tokyo Institute of Technology
- Yokohama
- Japan
| | - Masaaki Fujii
- Laboratory for Chemistry and Life Science
- Institute of Innovation Research
- Tokyo Institute of Technology
- Yokohama
- Japan
| | | | - Carsten Baldauf
- Fritz-Haber-Institut der MPG
- 14195 Berlin
- Germany
- Wilhelm-Ostwald-Institut für Physikalische und Theoretische Chemie
- Universität Leipzig
| | - Otto Dopfer
- Institut für Optik und Atomare Physik
- Technische Universität Berlin
- 10623 Berlin
- Germany
- Tokyo Tech World Research Hub Initiative (WRHI)
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