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Abstract
Efforts to design devices emulating complex cognitive abilities and response processes of biological systems have long been a coveted goal. Recent advancements in flexible electronics, mirroring human tissue's mechanical properties, hold significant promise. Artificial neuron devices, hinging on flexible artificial synapses, bioinspired sensors, and actuators, are meticulously engineered to mimic the biological systems. However, this field is in its infancy, requiring substantial groundwork to achieve autonomous systems with intelligent feedback, adaptability, and tangible problem-solving capabilities. This review provides a comprehensive overview of recent advancements in artificial neuron devices. It starts with fundamental principles of artificial synaptic devices and explores artificial sensory systems, integrating artificial synapses and bioinspired sensors to replicate all five human senses. A systematic presentation of artificial nervous systems follows, designed to emulate fundamental human nervous system functions. The review also discusses potential applications and outlines existing challenges, offering insights into future prospects. We aim for this review to illuminate the burgeoning field of artificial neuron devices, inspiring further innovation in this captivating area of research.
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Affiliation(s)
- Ke 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
| | - 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
| | - 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
| | - 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
| | - 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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2
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Precise synthesis of α,ω-chain-end-functionalized poly(dimethylsiloxane) with bromoaryl groups for incorporation in naphthalene-diimide-based N-type semiconducting polymers. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124934] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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3
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(Trifluorosilyl)methyl 2-methylacrylate: Synthesis, experimental and theoretical studies. J Organomet Chem 2022. [DOI: 10.1016/j.jorganchem.2021.122210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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4
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Au-Duong AN, Hsu YC, Malintoi M, Ubaidillah AN, Li YT, Lai JY, Chiu YC. Highly transparent, stretchable, and self‐healing polymers crosslinked by dynamic zinc(II)-poly(amic acid) bonds. Polym J 2021. [DOI: 10.1038/s41428-021-00579-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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5
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Hsu LC, Isono T, Lin YC, Kobayashi S, Chiang YC, Jiang DH, Hung CC, Ercan E, Yang WC, Hsieh HC, Tajima K, Satoh T, Chen WC. Stretchable OFET Memories: Tuning the Morphology and the Charge-Trapping Ability of Conjugated Block Copolymers through Soft Segment Branching. ACS APPLIED MATERIALS & INTERFACES 2021; 13:2932-2943. [PMID: 33423476 DOI: 10.1021/acsami.0c18820] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The mechanical properties and structural design flexibility of charge-trapping polymer electrets have led to their widespread use in organic field-effect transistor (OFET) memories. For example, in the electrets of polyfluorene-based conjugated/insulating block copolymers (BCPs), the confined fiberlike polyfluorene nanostructures in the insulating polymer matrix act as effective hole-trapping sites, leading to controllable memory performance through the design of BCPs. However, few studies have reported intrinsically stretchable charge-trapping materials and their memory device applications, and a practical method to correlate the thin-film morphology of BCP electrets with their charge-trapping ability has not yet been developed. In this study, a series of new conjugated/insulating BCPs, poly(9,9-di-n-hexyl-2,7-fluorene)-block-poly(δ-decanolactone)s (PF-b-PDLx, x = 1-3), as stretchable hole-trapping materials are reported. The linear and branched PDL blocks with comparable molecular weights were used to investigate the effect of polymer architecture on morphology and device performance. Moreover, the coverage area of the polyfluorene nanofibers on the BCP films was extracted from atomic force microscopy images, which can be correlated with the trapping density of the polymer electrets. The branched PDL segments not only improve stretchability but also tailor crystallinity and phase separation of the BCPs, thus increasing their charge-trapping ability. The OFET memory device with PF-b-PDL3 as the electret layer exhibited the largest memory window (102 V) and could retain its performance at up to 100% strain. This research highlights the importance of the BCP design for developing stretchable charge-trapping materials.
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Affiliation(s)
- Li-Che Hsu
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Takuya Isono
- Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Yan-Cheng Lin
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Saburo Kobayashi
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Yun-Chi Chiang
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Dai-Hua Jiang
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Chih-Chien Hung
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan
| | - Ender Ercan
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan
| | - Wei-Chen Yang
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Hui-Ching Hsieh
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Kenji Tajima
- Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Toshifumi Satoh
- Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Wen-Chang Chen
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan
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6
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Janegová K, Sysel P, Kulhánková H, Perfilov VA, Bernauer M, Fíla V. Poly(imide‐siloxane) films with controlled thickness. J Appl Polym Sci 2020. [DOI: 10.1002/app.49893] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
| | - Petr Sysel
- Department of Polymers, Faculty of Chemical Technology University of Chemistry and Technology Prague Czech Republic
| | - Hana Kulhánková
- Department of Polymers, Faculty of Chemical Technology University of Chemistry and Technology Prague Czech Republic
| | - Viacheslav A. Perfilov
- Department of Inorganic Technology, Faculty of Chemical Technology University of Chemistry and Technology Prague Czech Republic
| | - Milan Bernauer
- Department of Inorganic Technology, Faculty of Chemical Technology University of Chemistry and Technology Prague Czech Republic
| | - Vlastimil Fíla
- Department of Inorganic Technology, Faculty of Chemical Technology University of Chemistry and Technology Prague Czech Republic
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7
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Lin YC, Chen CK, Chiang YC, Hung CC, Fu MC, Inagaki S, Chueh CC, Higashihara T, Chen WC. Study on Intrinsic Stretchability of Diketopyrrolopyrrole-Based π-Conjugated Copolymers with Poly(acryl amide) Side Chains for Organic Field-Effect Transistors. ACS APPLIED MATERIALS & INTERFACES 2020; 12:33014-33027. [PMID: 32536156 DOI: 10.1021/acsami.0c07496] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The development of a π-conjugated polymer with hydrogen-bonding moieties has aroused great attention because of the improved molecular stacking and the hydrogen-bonding network. In this study, PDPPTVT (diketopyrrolopyrrole-thiophenevinylenethiophene) and PDPPSe (diketopyrrolopyrrole-selenophene) alkylated with a carbosilane (SiC8) side chain and poly(acryl amide) (PAM)-incorporated alkyl side chain were prepared, and their structure-performance and structure-stretchability correlation were evaluated. By incorporating the DPPTVT backbone and 0, 5, 10, or 20% PAM-incorporated alkyl side chain, the μh value could reach 2.0, 0.97, 0.74, and 0.42 cm2 V-1 s-1, respectively (P1 to P4). The polymer with the PDPPSe backbone and 5% PAM-incorporated alkyl side-chain (P5) exhibited the maximum μh value of 0.96 cm2 V-1 s-1. By extending the PAM moiety from the backbone with alkyl spacers, the solid-state packing and edge-on orientation can be properly maintained. Surprisingly, the PAM-incorporated alkyl side-chain can provide a hydrogen-bonding network serving as sacrificial bonding to mechanical deformation. Therefore, the relevant changes in the crystallographic parameters including the crystalline size and the in-plane π-π stacking distance with a 100% external strain were less than 4 and 0.8%, respectively, from P1 to P3. Therefore, P3 achieved an excellent stretchability while maintaining its molecular orientation and charge-transporting performance. Even with 100% external strain, P3 still provided an orthogonal μh over 0.1 cm2 V-1 s-1. Moreover, by substituting the TVT moiety with the Se moiety, the ductility of the backbone can be further increased when the elastic modulus decreases from 0.80 to 0.36 GPa for P2 to P5. The achieved high μh retention is over 20% after 500 stretching-releasing cycles with a 60% external strain perpendicular to the channel direction for the polymer composed of PDPPSe and 5% PAM content. The results manifest that our newly designed DPP with the PAM-incorporated alkyl side chain provides a promising approach to promote the intrinsic stretchability of the π-conjugated polymers.
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Affiliation(s)
- Yan-Cheng Lin
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Chun-Kai Chen
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Yun-Chi Chiang
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Chih-Chien Hung
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan
| | - Mao-Chun Fu
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Shin Inagaki
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Chu-Chen Chueh
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan
| | - Tomoya Higashihara
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Wen-Chang Chen
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan
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8
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Hsu LC, Kobayashi S, Isono T, Chiang YC, Ree BJ, Satoh T, Chen WC. Highly Stretchable Semiconducting Polymers for Field-Effect Transistors through Branched Soft–Hard–Soft Type Triblock Copolymers. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00381] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Li-Che Hsu
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Saburo Kobayashi
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Takuya Isono
- Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Yun-Chi Chiang
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan
| | - Brian J. Ree
- Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Toshifumi Satoh
- Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Wen-Chang Chen
- Institute of Polymer Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan
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9
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Synthesis and sorption activity of novel cross-linked 1-vinyl-1,2,4-triazole–(trimethoxysilyl)methyl-2-methacrylate copolymers. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121273] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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10
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Chuang TH, Chiang YC, Hsieh HC, Isono T, Huang CW, Borsali R, Satoh T, Chen WC. Nanostructure- and Orientation-Controlled Resistive Memory Behaviors of Carbohydrate- block-Polystyrene with Different Molecular Weights via Solvent Annealing. ACS APPLIED MATERIALS & INTERFACES 2020; 12:23217-23224. [PMID: 32326698 DOI: 10.1021/acsami.0c04551] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
We report the resistive electrical memory characteristics controlled by the self-assembled nanostructures of maltoheptaose-block-polystyrene (MH-b-PS) block copolymers, where the MH and PS blocks provide the charge-trapping and the insulating tunneling layer, respectively. A simple solvent annealing process, with various annealing conditions, were introduced for MH-b-PS thin films to achieve disordered, orientated cylinders and ordered-packed spheres morphologies. More details about the self-assembled MH-b-PS nanostructures, coupled with different volume fractions between MH and PS blocks, were investigated using atomic force microscopy and grazing-incidence small-angle X-ray scattering analyses. Moreover, various electrical memory behaviors including nonvolatile write-once-read-many-times (WORM) and Flash, and volatile dynamic-random-access-memory (DRAM) could be obtained by the same material (MH-b-PS3k). This study establishes a detailed relationship between the nanostructure of the MH-b-PS-based block copolymers and their memory behavior of the resistive memory devices.
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Affiliation(s)
- Tsung-Han Chuang
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Yun-Chi Chiang
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Hui-Ching Hsieh
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Takuya Isono
- Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Chao-Wei Huang
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | | | - Toshifumi Satoh
- Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
| | - Wen-Chang Chen
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
- Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan
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11
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Jao C, Chang J, Ya C, Chen W, Cho C, Lin J, Chiu Y, Zhou Y, Kuo C. Novel stretchable
light‐emitting
diodes based on
conjugated‐rod
block
elastic‐coil
copolymers. POLYM INT 2020. [DOI: 10.1002/pi.6023] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Chih‐Chun Jao
- Institute of Organic and Polymeric Materials Research and Development Center of Smart Textile Technology, National Taipei University of Technology Taipei Taiwan
| | - Jia‐Rui Chang
- Department of Chemical Engineering National Taiwan University of Science and Technology Taipei Taiwan
| | - Chia‐Yu Ya
- Institute of Organic and Polymeric Materials Research and Development Center of Smart Textile Technology, National Taipei University of Technology Taipei Taiwan
| | - Wei‐Cheng Chen
- Institute of Organic and Polymeric Materials Research and Development Center of Smart Textile Technology, National Taipei University of Technology Taipei Taiwan
| | - Chia‐Jung Cho
- Institute of Organic and Polymeric Materials Research and Development Center of Smart Textile Technology, National Taipei University of Technology Taipei Taiwan
| | - Ja‐Hon Lin
- Institute of Electro‐Optical Engineering National Taipei University of Technology Taipei Taiwan
| | - Yu‐Cheng Chiu
- Department of Chemical Engineering National Taiwan University of Science and Technology Taipei Taiwan
- Advanced Research Center for Green Materials Science and Technology National Taiwan University Taipei Taiwan
| | - Ye Zhou
- Institute for Advanced Study Shenzhen University Shenzhen P. R. China
| | - Chi‐Ching Kuo
- Institute of Organic and Polymeric Materials Research and Development Center of Smart Textile Technology, National Taipei University of Technology Taipei Taiwan
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12
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Choi JY, Lee J, Jeon J, Im J, Jang J, Jin SW, Joung H, Yu HC, Nam KN, Park HJ, Kim DM, Song IH, Yang J, Cho S, Chung CM. High-performance non-volatile resistive switching memory based on a polyimide/graphene oxide nanocomposite. Polym Chem 2020. [DOI: 10.1039/d0py01281e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Chemical structure of PI-GO, schematic structure of the ITO/PI-GO/Al device and its memory characteristics.
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13
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Wu P, Lin Y, Laysandra L, Lee M, Chiu Y, Isono T, Satoh T, Chen W. Organic–Inorganic Nanocomposite Film for High‐Performance Stretchable Resistive Memory Device. Macromol Rapid Commun 2019; 41:e1900542. [DOI: 10.1002/marc.201900542] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 11/30/2019] [Indexed: 01/14/2023]
Affiliation(s)
- Ping‐Han Wu
- Department of Chemical EngineeringNational Taiwan University, Taipei, Taiwan Taipei 10617 Taiwan
| | - Yan‐Cheng Lin
- Department of Chemical EngineeringNational Taiwan University, Taipei, Taiwan Taipei 10617 Taiwan
| | - Livy Laysandra
- Department of Chemical EngineeringNational Taiwan University of Science and Technology Taipei 10617 Taiwan
| | - Meng‐Hsien Lee
- Department of Chemical EngineeringNational Taiwan University, Taipei, Taiwan Taipei 10617 Taiwan
| | - Yu‐Cheng Chiu
- Department of Chemical EngineeringNational Taiwan University of Science and Technology Taipei 10617 Taiwan
- Advanced Research Center for Green Materials Science and TechnologyNational Taiwan University Taipei 10617 Taiwan
| | - Takuya Isono
- Division of Applied Chemistry, Faculty of EngineeringHokkaido University Sapporo 060‐8628 Japan
| | - Toshifumi Satoh
- Division of Applied Chemistry, Faculty of EngineeringHokkaido University Sapporo 060‐8628 Japan
| | - Wen‐Chang Chen
- Department of Chemical EngineeringNational Taiwan University, Taipei, Taiwan Taipei 10617 Taiwan
- Advanced Research Center for Green Materials Science and TechnologyNational Taiwan University Taipei 10617 Taiwan
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14
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Lin YC, Chen FH, Chiang YC, Chueh CC, Chen WC. Asymmetric Side-Chain Engineering of Isoindigo-Based Polymers for Improved Stretchability and Applications in Field-Effect Transistors. ACS APPLIED MATERIALS & INTERFACES 2019; 11:34158-34170. [PMID: 31441307 DOI: 10.1021/acsami.9b10943] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Thus far, there is still no study systematically investigating the influence of asymmetric side-chain design on a polymer's stretchability and its associated stretchable device applications. Herein, three kinds of asymmetric side chains consisting of carbosilane side chain (Si-C8), siloxane-terminated side chain (SiO-C8), and decyltetradecane side chain (DT) are engineered in isoindigo-bithiophene (PII2T, P1-P3) and isoindigo-difluorobithiophene (PII2TF, P4-P6) conjugated polymers, and their structure-stretchability correlation is explored in field-effect transistor characterization. It is revealed that owing to the geometric difference between the side chains, different asymmetric side-chain combinations impose distinct influences on the molecular stacking and orientation of the derived polymers. Surprisingly, the combination of asymmetric side chains and backbone fluorination is shown to deliver the best stretchability and mechanical durability of the derived polymer. Consequently, P6 consisting of asymmetric Si-C8/DT side chains and fluorinated backbone possesses the best mobility preservation of 81% at 100% strain with the stretching force perpendicular to the charge-transporting direction. Moreover, it presents 90% mobility retention after 400 stretching-releasing cycles with 60% strain, greatly exceeding the value (36%) of the non-fluorinated counterpart (P3). Our results suggest that the rational design of asymmetric side chains and backbone fluorination provides an efficient way to enhance the intrinsic stretchability of conjugated polymers.
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15
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Ercan E, Tsai PC, Chen JY, Lam JY, Hsu LC, Chueh CC, Chen WC. Stretchable and Ambient Stable Perovskite/Polymer Luminous Hybrid Nanofibers of Multicolor Fiber Mats and Their White LED Applications. ACS APPLIED MATERIALS & INTERFACES 2019; 11:23605-23615. [PMID: 31252500 DOI: 10.1021/acsami.9b05527] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
We report the fabrication and optical/mechanical properties of perovskite/thermoplastic polyurethane (TPU)-based multicolor luminescent core-shell nanofibers and their large-scale fiber mats. One-step coaxial perovskite/TPU nanofibers had a high photoluminescence quantum yield value exceeding 23.3%, surpassing that of its uniaxial counterpart, due to the homogeneous distribution of perovskite nanoparticles (NPs) by the confinement of the TPU shell. The fabricated core-shell nanofibers exhibited a high mechanical endurance owing to the well elastic properties of TPU and maintained the luminescence intensity even under a 100% stretched state after 1000 stretching-relaxing cycles. By taking advantage of the hydrophobic nature of TPU, the ambient and moisture stability of the fabricated fibers were enhanced up to 1 month. Besides, large-area stretchable nanofibers with a dimension of 15 cm × 30 cm exhibiting various visible-light emission peaks were fabricated by changing the composition of perovskite NPs. Moreover, a large-scale luminescent and stretchable fiber mat was successfully fabricated by electrospinning. Furthermore, the white-light emission from the fabricated fibers and mats was achieved by incorporating orange-light-emitting poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] into the TPU shell and coupling the turquoise blue-light-emitting perovskite NPs in the core site. Finally, the integrity of the perovskite-based TPU fibers was realized by fabricating a light-emitting diode (LED) device containing the orange-light-emitting fibers embedded in the polyfluorene emissive layer. This work demonstrated an effective way to prepare stable and stretchable luminous nanofibers and the integration of such nanofibers into LED devices, which could facilitate the future development of wearable electronic devices.
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16
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Chiang YC, Kobayashi S, Isono T, Shih CC, Shingu T, Hung CC, Hsieh HC, Tung SH, Satoh T, Chen WC. Effect of a conjugated/elastic block sequence on the morphology and electronic properties of polythiophene based stretchable block copolymers. Polym Chem 2019. [DOI: 10.1039/c9py01216h] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
We report the synthesis, morphology, and electronic properties of intrinsically stretchable AB-type, ABA-type, and BAB-type block copolymers (BCPs) of poly(3-hexylthiophene) (P3HT: A block) and elastic poly(octylene oxide) (POO: B block).
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Affiliation(s)
- Yun-Chi Chiang
- Department of Chemical Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Saburo Kobayashi
- Faculty of Engineering and Graduate School of Chemical Sciences and Engineering
- Hokkaido University
- Sapporo 060-8628
- Japan
| | - Takuya Isono
- Faculty of Engineering and Graduate School of Chemical Sciences and Engineering
- Hokkaido University
- Sapporo 060-8628
- Japan
| | - Chien-Chung Shih
- Department of Chemical Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Tomoki Shingu
- Faculty of Engineering and Graduate School of Chemical Sciences and Engineering
- Hokkaido University
- Sapporo 060-8628
- Japan
| | - Chih-Chien Hung
- Institute of Polymer Science and Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Hui-Ching Hsieh
- Department of Chemical Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Shih-Huang Tung
- Institute of Polymer Science and Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
- Advanced Research Center for Green Materials Science and Technology
| | - Toshifumi Satoh
- Faculty of Engineering and Graduate School of Chemical Sciences and Engineering
- Hokkaido University
- Sapporo 060-8628
- Japan
| | - Wen-Chang Chen
- Department of Chemical Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
- Institute of Polymer Science and Engineering
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