1
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Jia H, Jimbo K, Yokochi H, Otsuka H, Michinobu T. Self-healing and shape-memory polymers based on cellulose acetate matrix. Sci Technol Adv Mater 2024; 25:2320082. [PMID: 38455385 PMCID: PMC10919307 DOI: 10.1080/14686996.2024.2320082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Accepted: 02/13/2024] [Indexed: 03/09/2024]
Abstract
The creation of self-healing polymers with superior strength and stretchability from biodegradable materials is attracting increasing attention. In this study, we synthesized new biomass-derived cellulose acetate (CA) derivatives by ring-opening graft polymerization of δ-valerolactone followed by the introduction of ureidopyrimidinone (Upy) groups in the polymer side chains. Due to the semicrystalline aliphatic characteristics of the side chain poly(δ-valerolactone) (PVL) and quadruple hydrogen bonds formed by the Upy groups, the stretchability of the resulting polymers was significantly enhanced. Moreover, the shape memory ability and self-healing property (58.3% of self-healing efficiency) were successfully imparted to the polymer. This study demonstrates the great significance of using biomass sources to create self-healing polymers.
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Affiliation(s)
- Han Jia
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Meguroku, Tokyo, Japan
| | - Keiya Jimbo
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Meguroku, Tokyo, Japan
| | - Hirogi Yokochi
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, Meguroku, Tokyo, Japan
| | - Hideyuki Otsuka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, Meguroku, Tokyo, Japan
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Meguroku, Tokyo, Japan
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2
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Wang M, Lin CY, Sagara Y, Michinobu T. Enhanced Photothermal Property of NDI-Based Conjugated Polymers by Copolymerization with a Thiadiazolobenzotriazole Unit. ACS Mater Au 2024; 4:82-91. [PMID: 38221926 PMCID: PMC10786135 DOI: 10.1021/acsmaterialsau.3c00077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 10/08/2023] [Accepted: 10/10/2023] [Indexed: 01/16/2024]
Abstract
Solar steam generation (SSG) is a promising photothermal technology to solve the global water storage issue. The potential of π-conjugated polymers as photothermal materials is significant, because their absorption range can be customized through molecular design. In this study, naphthalenediimide (NDI) and thiadiazolobenzotriazole (TBZ) were employed as bifunctional monomers to produce conjugated polymers. There are two types of polymers, P1 and P2. P1 is based on NDI, while P2 is a copolymer of NDI and TBZ in a ratio of 9:1. Both polymers had high molecular weights and sufficient thermal stability. UV-vis-near-infrared (NIR) absorption spectra revealed that both polymers have large extinction coefficients ascribed to the NDI and TBZ chromophores. Notably, the absorption spectrum of P2 exhibited a significant red shift compared to P1, resulting in a narrow optical bandgap and absorption in the NIR range. This result suggested that P2 has a higher light absorption than P1. Photoluminescence (PL) spectra were measured to elucidate the conversion of the absorbed light into thermal energy. It was found that P2 has a reduced fluorescence quantum yield as a result of the TBZ unit, signifying a proficient conversion of the photothermal energy. Based on the results, it appears that the P2 film has a greater photothermal property compared to that of the P1 film. The surface temperature of the P2 film reached approximately 50 °C under the investigated conditions. In addition, copolymer P2 exhibited an impressive SSG efficiency of 72.4% under 1 sun (1000 W/m2) irradiation. All the results suggested that narrow bandgap conjugated polymers containing the TBZ unit are highly effective materials for achieving optimal performance in SSGs.
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Affiliation(s)
- Mingqian Wang
- Department of Materials Science and
Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Chia-Yang Lin
- Department of Materials Science and
Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Yoshimitsu Sagara
- Department of Materials Science and
Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Tsuyoshi Michinobu
- Department of Materials Science and
Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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3
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Kawamura R, Michinobu T. PEDOT:PSS versus Polyaniline: A Comparative Study of Conducting Polymers for Organic Electrochemical Transistors. Polymers (Basel) 2023; 15:4657. [PMID: 38139909 PMCID: PMC10747145 DOI: 10.3390/polym15244657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 12/05/2023] [Accepted: 12/06/2023] [Indexed: 12/24/2023] Open
Abstract
Organic electrochemical transistors (OECTs) based on conducting polymers have attracted significant attention in the field of biosensors. PEDOT:PSS and polyaniline (PANI) are representative conducting polymers used for OECTs. While there are many studies on PEDOT:PSS, there are not so many reports on PANI-based OECTs, and a detailed study to compare these two polymers has been desired. In this study, we investigated the fabrication conditions to produce the best performance in the OECTs using the above-mentioned two types of conducting polymers. The two main parameters were film thickness and film surface roughness. For PEDOT:PSS, the optimal conditions for fabricating thin films were a spin-coating rate of 3000 rpm and a DI water immersion time of 18 h. For PANI, the optimal conditions were a spin-coating rate of 3000 rpm and DI water immersion time of 5 s, and adding dodecylbenzenesulfonic acid (DBSA) was found to provide better OECT performances. The OECT performances based on PEDOT:PSS were superior to those based on PANI in terms of conductivity and transconductance, but PANI showed excellence in terms of film thickness and surface smoothness, leading to the good reproducibility of OECT performances.
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Affiliation(s)
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan;
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4
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Jia H, Shahi S, Shrestha LK, Ariga K, Michinobu T. Improved supercapacitor performances by adding carbonized C 60-based nanospheres to PVA/TEMPO-cellulose hydrogel-based electrolyte. RSC Adv 2023; 13:21502-21509. [PMID: 37469969 PMCID: PMC10352703 DOI: 10.1039/d3ra03349j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Accepted: 07/08/2023] [Indexed: 07/21/2023] Open
Abstract
With the emergence of the energy crisis and the development of flexible electronics, there is an urgent need to develop new reliable energy supply devices with good flexibility, stable energy storage, and efficient energy transfer. Porous carbon materials have been proven to enhance the efficiency of ion transport, as the nanospaces within them serve as pathways for mass transport. However, they have been mainly investigated in the electrodes of supercapacitors and batteries. To elucidate their function in the solid electrolytes, we introduced C60-based carbonized nanospheres into PVA/TEMPO-cellulose-based hydrogels by exploiting the electrostatic interaction between the carboxyl groups of TEMPO-cellulose and the carbonized nanospheres. The obtained hydrogels were further utilized as the solid electrolytes for the supercapacitors. Through a comprehensive investigation, we found that the carbonized nanospheres can act as physical crosslinking points and increase the maximum stress of the hydrogel from 0.12 to 0.31 MPa without affecting the maximum strain. In addition, the nanospaces of the carbonized nanospheres provided a pathway for ion transport, improving the capacitance of the supercapacitor from 344.83 to 369.18 mF cm-2 at 0.5 mA cm-2. The capacitance retention was also improved from 53% to 62% at 10 mA cm-2. Collectively, this study provides new insights into the application of carbonized materials to solid electrolytes.
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Affiliation(s)
- Han Jia
- Department of Materials Science and Engineering, Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku Tokyo 152-8552 Japan
| | - Sabina Shahi
- Central Department of Chemistry, Tribhuvan University Kirtipur Kathmandu 44613 Nepal
| | - Lok Kumar Shrestha
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) 1-1 Namiki Tsukuba 305-0044 Japan
- Department of Materials Science, Faculty of Pure and Applied Sciences, University of Tsukuba 1-1-1 Tennodai Tsukuba 305-8573 Japan
| | - Katsuhiko Ariga
- Research Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS) 1-1 Namiki Tsukuba 305-0044 Japan
- Department of Advanced Materials Science, Graduate School of Frontier Sciences, The University of Tokyo 5-1-5 Kashiwanoha Kashiwa 277-8561 Japan
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering, Tokyo Institute of Technology 2-12-1 Ookayama Meguro-ku Tokyo 152-8552 Japan
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5
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Lin CY, Michinobu T. Conjugated photothermal materials and structure design for solar steam generation. Beilstein J Nanotechnol 2023; 14:454-466. [PMID: 37091288 PMCID: PMC10113523 DOI: 10.3762/bjnano.14.36] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 03/15/2023] [Indexed: 05/03/2023]
Abstract
With the development of solar steam generation (SSG) for clean water production, conjugated photothermal materials (PTMs) have attracted significant interest because of their advantages over metallic and inorganic PTMs in terms of high light absorption, designable molecular structures, flexible morphology, and solution processability. We review here the recent progress in solar steam generation devices based on conjugated organic materials. Conjugated organic materials are processed into fibers, membranes, and porous structures. Therefore, nanostructure design based on the concept of nanoarchitectonics is crucial to achieve high SSG efficiency. We discuss the considerations for designing SSG absorbers and describe commonly used conjugated organic materials and structural designs.
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Affiliation(s)
- Chia-Yang Lin
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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6
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He W, Liu Q, Otep S, Matsumoto H, Manzhos S, Sonar P, Kyaw AKK, Michinobu T. Tetramethylammonium Iodide Additive for Enhancing the Charge Carrier Mobilities of
Diketopyrrolopyrrole‐Based
Conjugated Polymer in Ambipolar Organic
Field‐Effect
Transistors. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Waner He
- Department of Materials Science and Engineering Tokyo Institute of Technology Tokyo 152‐8552 Japan
| | - Qian Liu
- Guangdong University Key Laboratory for Advanced Quantum Dot Displays, Department of Electrical and Electronic Engineering Southern University of Science and Technology Shenzhen 518055 P. R. China
- Center for Materials Science, School of Chemistry and Physics, Faculty of Science Queensland University of Technology Brisbane QLD 4000 Australia
| | - Sultan Otep
- Department of Materials Science and Engineering Tokyo Institute of Technology Tokyo 152‐8552 Japan
| | - Hidetoshi Matsumoto
- Department of Materials Science and Engineering Tokyo Institute of Technology Tokyo 152‐8552 Japan
| | - Sergei Manzhos
- School of Materials and Chemical Technology Tokyo Institute of Technology Tokyo 152‐8552 Japan
| | - Prashant Sonar
- Center for Materials Science, School of Chemistry and Physics, Faculty of Science Queensland University of Technology Brisbane QLD 4000 Australia
| | - Aung Ko Ko Kyaw
- Guangdong University Key Laboratory for Advanced Quantum Dot Displays, Department of Electrical and Electronic Engineering Southern University of Science and Technology Shenzhen 518055 P. R. China
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering Tokyo Institute of Technology Tokyo 152‐8552 Japan
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7
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Watanabe N, He W, Nozaki N, Matsumoto H, Michinobu T. Benzothiadiazole versus Thiazolobenzotriazole: A Structural Study of Electron Acceptors in Solution-Processable Organic Semiconductors. Chem Asian J 2022; 17:e202200768. [PMID: 36102294 PMCID: PMC9828094 DOI: 10.1002/asia.202200768] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 09/13/2022] [Indexed: 01/12/2023]
Abstract
Despite the rapid progress of organic electronics, developing high-performance n-type organic semiconductors is still challenging. Donor-acceptor (D-A) type conjugated structures have been an effective molecular design strategy to achieve chemically-stable semiconductors and the appropriate choice of the acceptor units determines the electronic properties and device performances. We have now synthesized two types of A1 -D-A2 -D-A1 type conjugated molecules, namely, NDI-BTT-NDI and NDI-TBZT-NDI, with different central acceptor units. In order to investigate the effects of the central acceptor units on the charge-transporting properties, organic field-effect transistors (OFETs) were fabricated. NDI-TBZT-NDI had shallower HOMO and deeper LUMO levels than NDI-BTT-NDI. Hence, the facilitated charge injection resulted in ambipolar transistor performances with the optimized hole and electron mobilities of 0.00134 and 0.151 cm2 V-1 s-1 , respectively. In contrast, NDI-BTT-NDI displayed only an n-channel OFET performance with the electron mobility of 0.0288 cm2 V-1 s-1 . In addition, the device based on NDI-TBZT-NDI showed a superior air stability to that based on NDI-BTT-NDI. The difference in these OFET performances was reasonably explained by the contact resistance and film morphology. Overall, this study demonstrated that the TBZ acceptor is a promising building block to create n-type organic semiconductors.
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Affiliation(s)
- Nanami Watanabe
- Department of Materials Science and EngineeringTokyo Institute of Technology2–12-1 Ookayama, Meguro-kuTokyo152–8552Japan
| | - Waner He
- Department of Materials Science and EngineeringTokyo Institute of Technology2–12-1 Ookayama, Meguro-kuTokyo152–8552Japan
| | - Naoya Nozaki
- Department of Materials Science and EngineeringTokyo Institute of Technology2–12-1 Ookayama, Meguro-kuTokyo152–8552Japan
| | - Hidetoshi Matsumoto
- Department of Materials Science and EngineeringTokyo Institute of Technology2–12-1 Ookayama, Meguro-kuTokyo152–8552Japan
| | - Tsuyoshi Michinobu
- Department of Materials Science and EngineeringTokyo Institute of Technology2–12-1 Ookayama, Meguro-kuTokyo152–8552Japan
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8
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Yang Y, Wu Y, He W, Tien H, Yang W, Michinobu T, Chen W, Lee W, Chueh C. Tuning Ambipolarity of the Conjugated Polymer Channel Layers of Floating-Gate Free Transistors: From Volatile Memories to Artificial Synapses. Adv Sci (Weinh) 2022; 9:e2203025. [PMID: 35986439 PMCID: PMC9631064 DOI: 10.1002/advs.202203025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Revised: 07/24/2022] [Indexed: 05/22/2023]
Abstract
Three-terminal synaptic transistor has drawn significant research interests for neuromorphic computation due to its advantage of facile device integrability. Lately, bulk-heterojunction-based synaptic transistors with bipolar modulation are proposed to exempt the use of an additional floating gate. However, the actual correlation between the channel's ambipolarity, memory characteristic, and synaptic behavior for a floating-gate free transistor has not been investigated yet. Herein, by studying five diketopyrrolopyrrole-benzotriazole dual-acceptor random conjugated polymers, a clear correlation among the hole/electron ratio, the memory retention characteristic, and the synaptic behavior for the polymer channel layer in a floating-gate free transistor is described. It reveals that the polymers with balanced ambipolarity possess better charge trapping capabilities and larger memory windows; however, the high ambipolarity results in higher volatility of the memory characteristics, namely poor memory retention capability. In contrast, the polymer with a reduced ambipolarity possesses an enhanced memory retention capability despite showing a reduced memory window. It is further manifested that this enhanced charge retention capability enables the device to present artificial synaptic characteristics. The results highlight the importance of the channel's ambipolarity of floating-gate free transistors on the resultant volatile memory characteristics and synaptic behaviors.
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Affiliation(s)
- Yu‐Ting Yang
- Department of Chemical EngineeringNational Taiwan UniversityTaipei10617Taiwan
| | - Ying‐Sheng Wu
- Department of Chemical EngineeringNational Taiwan UniversityTaipei10617Taiwan
| | - Waner He
- Department of Materials Science and EngineeringTokyo Institute of Technology2‐12‐1 Ookayama, Meguro‐kuTokyo152‐8552Japan
| | - Hsin‐Chiao Tien
- Research and Development Center for Smart Textile Technology and Department of Chemical Engineering and BiotechnologyNational Taipei University of TechnologyTaipei106Taiwan
| | - Wei‐Chen Yang
- Department of Chemical EngineeringNational Taiwan UniversityTaipei10617Taiwan
- Advanced Research Center of Green Materials Science and TechnologyNational Taiwan UniversityTaipei10617Taiwan
| | - Tsuyoshi Michinobu
- Department of Materials Science and EngineeringTokyo Institute of Technology2‐12‐1 Ookayama, Meguro‐kuTokyo152‐8552Japan
| | - Wen‐Chang Chen
- Department of Chemical EngineeringNational Taiwan UniversityTaipei10617Taiwan
- Advanced Research Center of Green Materials Science and TechnologyNational Taiwan UniversityTaipei10617Taiwan
| | - Wen‐Ya Lee
- Research and Development Center for Smart Textile Technology and Department of Chemical Engineering and BiotechnologyNational Taipei University of TechnologyTaipei106Taiwan
| | - Chu‐Chen Chueh
- Department of Chemical EngineeringNational Taiwan UniversityTaipei10617Taiwan
- Advanced Research Center of Green Materials Science and TechnologyNational Taiwan UniversityTaipei10617Taiwan
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9
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Watanabe N, He W, Nozaki N, Matsumoto H, Michinobu T. Benzothiadiazole versus Thiazolobenzotriazole: A Structural Study of Electron Acceptors in Solution‐Processable Organic Semiconductors. Chem Asian J 2022. [DOI: 10.1002/asia.202201008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nanami Watanabe
- Department of Materials Science and Engineering Tokyo Institute of Technology 2–12-1 Ookayama, Meguro-ku Tokyo 152–8552 Japan
| | - Waner He
- Department of Materials Science and Engineering Tokyo Institute of Technology 2–12-1 Ookayama, Meguro-ku Tokyo 152–8552 Japan
| | - Naoya Nozaki
- Department of Materials Science and Engineering Tokyo Institute of Technology 2–12-1 Ookayama, Meguro-ku Tokyo 152–8552 Japan
| | - Hidetoshi Matsumoto
- Department of Materials Science and Engineering Tokyo Institute of Technology 2–12-1 Ookayama, Meguro-ku Tokyo 152–8552 Japan
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering Tokyo Institute of Technology 2–12-1 Ookayama, Meguro-ku Tokyo 152–8552 Japan
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10
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Abstract
Joining of imidazole, pyrimidine, and oxazole to other conjugated core units was explored in pursuit of yielding monomers to synthesize organic semiconducting polymers. Regioregular oxazole-flanked thiophene, benzothiadiazole, naphthalene diimide (NDI), and thienopyrroledione (TPD) were successfully isolated via stannylation of oxazole and the Stille coupling of brominated core units (overall yields ranging from ca. 40 to 60%). From subsequent direct arylation polymerization, NDI/oxazole/TPD-containing regioisomeric polymers were obtained with optical and electrochemical orbital energetics in the semiconducting regime.
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Affiliation(s)
- Joost Kimpel
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Waner He
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Ye Cheng
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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11
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Cheng Y, Kuboyama K, Akasaka S, Araki T, Masai E, Nakamura M, Michinobu T. Polyurethanes based on lignin-derived metabolic intermediate with strong adhesion to metals. Polym Chem 2022. [DOI: 10.1039/d2py01128j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Polyurethanes based on lignin-derived 2-pyrone-4,6-dicarboxylic acid (PDC) were successfully synthesized in one-pot, and their thermal, mechanical, and adhesive properties were investigated.
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Affiliation(s)
- Ye Cheng
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Tokyo 152-8552, Japan
| | - Keiichi Kuboyama
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Tokyo 152-8552, Japan
| | - Shuichi Akasaka
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Tokyo 152-8552, Japan
| | - Takuma Araki
- Department of Forest Resource Chemistry, Forestry and Forest Products Research Institute, Tsukuba, Ibaraki 305-8687, Japan
| | - Eiji Masai
- Department of Materials Science and Bioengineering, Nagaoka University of Technology, Nagaoka, Niigata 940-2188, Japan
| | - Masaya Nakamura
- Department of Forest Resource Chemistry, Forestry and Forest Products Research Institute, Tsukuba, Ibaraki 305-8687, Japan
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Tokyo 152-8552, Japan
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12
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Wang Y, Hasegawa T, Matsumoto H, Michinobu T. Correction to "Significant Improvement of Unipolar n-Type Transistor Performances by Manipulating the Coplanar Backbone Conformation of Electron-Deficient Polymers via Hydrogen Bonding". J Am Chem Soc 2021; 143:21443. [PMID: 34905357 DOI: 10.1021/jacs.1c12391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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13
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Chen X, Michinobu T. Postpolymerization Modification: A Powerful Tool for the Synthesis and Function Tuning of Stimuli‐Responsive Polymers. MACROMOL CHEM PHYS 2021. [DOI: 10.1002/macp.202100370] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Xu Chen
- Department of Materials Science and Engineering Tokyo Institute of Technology 2‐12‐1 Ookayama, Meguro‐ku Tokyo 152‐8552 Japan
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering Tokyo Institute of Technology 2‐12‐1 Ookayama, Meguro‐ku Tokyo 152‐8552 Japan
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14
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Bhat G, Liu Q, Kielar M, Hamada Y, Michinobu T, Sah P, Ko Kyaw AK, Pandey AK, Sonar P. Energy-Level Manipulation in Novel Indacenodithiophene-Based Donor-Acceptor Polymers for Near-Infrared Organic Photodetectors. ACS Appl Mater Interfaces 2021; 13:29866-29875. [PMID: 34152743 DOI: 10.1021/acsami.1c03643] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Organic photodetectors (OPDs) are promising candidates for next-generation digital imaging and wearable sensors due to their low cost, tuneable optoelectrical properties combined with high-level performance, and solution-processed fabrication techniques. However, OPD detection is often limited to shorter wavelengths, whereas photodetection in the near-infrared (NIR) region is increasingly being required for wearable electronics and medical device applications. NIR sensing suffers from low responsivity and high dark currents. A common approach to enhance NIR photon detection is lowering the optical band gap via donor-acceptor (D-A) molecular engineering. Herein, we present the synthesis of two novel indacenodithiophene (IDT)-based D-A conjugated polymers, namely, PDPPy-IT and PSNT-IT via palladium-catalyzed Stille coupling reactions. These novel polymers exhibit optical band gaps of 1.81 and 1.27 eV for PDPPy-IT and PSNT-IT, respectively, with highly desirable visible and NIR light detection through energy-level manipulation. Moreover, excellent materials' solubility and thin-film processability allow easy incorporation of these polymers as an active layer into OPDs for light detection. In the case of PSNT-IT devices, a photodetection up to 1000 nm is demonstrated with a peak sensitivity centered at 875 nm, whereas PDPPy-IT devices are efficient in detecting the visible spectrum with the highest sensitivity at 660 nm. Overall, both OPDs exhibit spectral responsivities up to 0.11 A W-1 and dark currents in the nA cm-2 range. With linear dynamic ranges exceeding 140 dB and fast response times recorded below 100 μs, the use of novel IDT-based polymers in OPDs shows great potential for wearable optoelectronics.
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Affiliation(s)
- Gurudutt Bhat
- School of Chemistry and Physics, Science Faculty, Queensland University of Technology, Brisbane, Queensland 4001, Australia
| | - Qian Liu
- School of Chemistry and Physics, Science Faculty, Queensland University of Technology, Brisbane, Queensland 4001, Australia
- Guangdong University Key Laboratory for Advanced Quantum Dot Displays, Shenzhen Key Laboratory for Advanced Quantum Dot Displays and Lighting, and Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Marcin Kielar
- Queensland Brain Institute, The University of Queensland, St Lucia, Queensland 4072, Australia
- School of Electrical Engineering and Robotics, Engineering Faculty, Queensland University of Technology, Brisbane, Queensland 4001, Australia
| | - Yuya Hamada
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Pankaj Sah
- Queensland Brain Institute, The University of Queensland, St Lucia, Queensland 4072, Australia
| | - Aung Ko Ko Kyaw
- Guangdong University Key Laboratory for Advanced Quantum Dot Displays, Shenzhen Key Laboratory for Advanced Quantum Dot Displays and Lighting, and Department of Electrical and Electronic Engineering, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ajay K Pandey
- School of Electrical Engineering and Robotics, Engineering Faculty, Queensland University of Technology, Brisbane, Queensland 4001, Australia
- Centre for Material Science, Queensland University of Technology, Brisbane, Queensland 4001, Australia
| | - Prashant Sonar
- School of Chemistry and Physics, Science Faculty, Queensland University of Technology, Brisbane, Queensland 4001, Australia
- Centre for Material Science, Queensland University of Technology, Brisbane, Queensland 4001, Australia
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15
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Otep S, Ogita K, Yomogita N, Motai K, Wang Y, Tseng YC, Chueh CC, Hayamizu Y, Matsumoto H, Ishikawa K, Mori T, Michinobu T. Cross-Linking of Poly(arylenebutadiynylene)s and Its Effect on Charge Carrier Mobilities in Thin-Film Transistors. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c00008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sultan Otep
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Kosuke Ogita
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Naomasa Yomogita
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Kazunori Motai
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Yang Wang
- Department of Materials Science, Fudan University, 2005, Songhu Road, Shanghai 200433, China
| | - Yu-Cheng Tseng
- Department of Chemical Engineering and Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan
| | - Chu-Chen Chueh
- Department of Chemical Engineering and Advanced Research Center for Green Materials Science and Technology, National Taiwan University, Taipei 10617, Taiwan
| | - Yuhei Hayamizu
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Hidetoshi Matsumoto
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Ken Ishikawa
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Takehiko Mori
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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16
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Piwoński H, Nozue S, Fujita H, Michinobu T, Habuchi S. Organic J-Aggregate Nanodots with Enhanced Light Absorption and Near-Unity Fluorescence Quantum Yield. Nano Lett 2021; 21:2840-2847. [PMID: 33784810 PMCID: PMC8155199 DOI: 10.1021/acs.nanolett.0c04928] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 03/23/2021] [Indexed: 06/12/2023]
Abstract
Development of biocompatible fluorophores with small size, bright fluorescence, and narrow spectrum translate directly into major advances in fluorescence imaging and related techniques. Here, we discover that a small donor-acceptor-donor-type organic molecule consisting of a carbazole (Cz) donor and benzothiazole (BT) acceptor (CzBTCz) assembles into quasi-crystalline J-aggregates upon a formation of ultrasmall nanoparticles. The 3.5 nm CzBTCz Jdots show a narrow absorption spectrum (fwhm = 27 nm), near-unity fluorescence quantum yield (ϕfl = 0.95), and enhanced peak molar extinction coefficient. The superior spectroscopic characteristics of the CzBTCz Jdots result in two orders of magnitude brighter photoluminescence of the Jdots compared with semiconductor quantum dots, which enables continuous single-Jdots imaging over a 1 h period. Comparison with structurally similar CzBT nanoparticles demonstrates a critical role played by the shape of CzBTCz on the formation of the Jdots. Our findings open an avenue for the development of a new class of fluorescent nanoparticles based on J-aggregates.
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Affiliation(s)
- Hubert Piwoński
- King
Abdullah University of Science and Technology, Biological and Environmental Science and Engineering
Division, Thuwal 23955-6900, Saudi Arabia
| | - Shuho Nozue
- King
Abdullah University of Science and Technology, Biological and Environmental Science and Engineering
Division, Thuwal 23955-6900, Saudi Arabia
| | - Hiroyuki Fujita
- Tokyo
Institute of Technology, Department of Materials
Science and Engineering, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Tsuyoshi Michinobu
- Tokyo
Institute of Technology, Department of Materials
Science and Engineering, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Satoshi Habuchi
- King
Abdullah University of Science and Technology, Biological and Environmental Science and Engineering
Division, Thuwal 23955-6900, Saudi Arabia
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17
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Piwoński H, Wang Y, Li W, Michinobu T, Habuchi S. Millimeter-Deep Detection of Single Shortwave-Infrared-Emitting Polymer Dots through Turbid Media. Nano Lett 2020; 20:8803-8810. [PMID: 33206524 DOI: 10.1021/acs.nanolett.0c03675] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/11/2023]
Abstract
Fluorescence imaging at longer wavelengths, especially in the shortwave-infrared (SWIR: 1000-1700 nm) region, leads to a substantial decrease in light attenuation, scattering, and background autofluorescence, thereby enabling enhanced penetration into biological tissues. The limited selection of fluorescent probes is a major bottleneck in SWIR fluorescence imaging. Here, we develop SWIR-emitting nanoparticles composed of donor-acceptor-type conjugated polymers. The bright SWIR fluorescence of the polymer dots (primarily attributable to their large absorption cross-section and high fluorescence saturation intensity (as high as 113 kW·cm-2)) enables the unprecedented detection of single particles as small as 14 nm through millimeter-thick turbid media. Unlike most SWIR-emitting nanomaterials, which have an excited-state lifetime in the range of microseconds to milliseconds, our polymer dots exhibit a subnanosecond excited-state lifetime. These characteristics enable us to demonstrate new time-gated single-particle imaging with a high signal-to-background ratio. These findings expand the range of potential applications of single-particle deep-tissue imaging.
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Affiliation(s)
- Hubert Piwoński
- King Abdullah University of Science and Technology, Biological and Environmental Science and Engineering Division, Thuwal 23955-6900, Saudi Arabia
| | - Yang Wang
- Tokyo Institute of Technology, Department of Materials Science and Engineering, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Wei Li
- Tokyo Institute of Technology, Department of Materials Science and Engineering, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Tsuyoshi Michinobu
- Tokyo Institute of Technology, Department of Materials Science and Engineering, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Satoshi Habuchi
- King Abdullah University of Science and Technology, Biological and Environmental Science and Engineering Division, Thuwal 23955-6900, Saudi Arabia
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18
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Kimpel J, Yoshitake Y, Michinobu T. Poly(3,9-carbazole)s: A Chemically Stable Extended Form of Polyaniline for Nitro-Aromatic Sensor Applications. BCSJ 2020. [DOI: 10.1246/bcsj.20200177] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Joost Kimpel
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Yoko Yoshitake
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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19
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Kimpel J, Michinobu T. Conjugated polymers for functional applications: lifetime and performance of polymeric organic semiconductors in organic field‐effect transistors. POLYM INT 2020. [DOI: 10.1002/pi.6020] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Joost Kimpel
- Department of Materials Science and Engineering Tokyo Institute of Technology Tokyo Japan
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering Tokyo Institute of Technology Tokyo Japan
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20
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Su YA, Maebayashi N, Fujita H, Lin YC, Chen CI, Chen WC, Michinobu T, Chueh CC, Higashihara T. Development of Block Copolymers with Poly(3-hexylthiophene) Segments as Compatibilizers in Non-Fullerene Organic Solar Cells. ACS Appl Mater Interfaces 2020; 12:12083-12092. [PMID: 32066235 DOI: 10.1021/acsami.9b22531] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Poly(3-hexylthiophene) (P3HT)-segment-based block copolymers have been reported to deliver an effective compatibilizer function in the P3HT:PC61BM bulk-heterojunction (BHJ) system to simultaneously improve performance and stability. However, as limited by the deficient optophysic properties of the P3HT:PC61BM system, the resultant power conversion efficiency (PCE) of compatibilizer-mediated devices is low despite the optimized chemical structures of the P3HT-segment-based block copolymers. To better shed light on such a compatibilizer effect, the compatibilizer function of the P3HT-segment-based block copolymers is herein investigated in the emerging non-fullerene acceptor (NFA)-based BHJ systems. A P3HT analogue, poly[(4,4'-bis(2-butyloctoxycarbonyl-[2,2'-bithiophene]-5,5-diyl)-alt-(2,2'-bithiophene-5,5'-diyl))] (PDCBT), is used as the polymer donor since it shares the same backbone as P3HT to afford good compatibility with the P3HT-segment-based block copolymers and it has been proven to deliver a higher PCE than P3HT in the NFA BHJ systems. The P3HT-segment-based block copolymers (P1-P4) are manifested to offer similar compatibilizer functions for the PDCBT-based NFA BHJ systems, and the importance of their structural design is also revealed. As a result, addition of P4 delivers the largest enhancement in PCE: from 5.30 to 7.11% for the PDCBT:ITIC blend and from 6.21 to 8.04% for the PDCBT:IT-M blend. Moreover, it can also enhance the device's thermal stability, which can maintain 77% of the initial PCE after annealing at 85 °C for 120 h (for the PDCBT:ITIC blend), outperforming the pristine binary device (66% preservation). More importantly, the entire compatibilizer-mediated device exhibits an improved Voc. Such reduced potential loss can be attributed to the improved interfacial compatibility between the photoactive components, the most important function of a compatibilizer.
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Affiliation(s)
- Yu-An Su
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Noriyuki Maebayashi
- Department of Organic Materials Science, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
| | - Hiroyuki Fujita
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Yan-Cheng Lin
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - Chih-I Chen
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan
| | - 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
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, 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
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21
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Chen CH, Wang Y, Michinobu T, Chang SW, Chiu YC, Ke CY, Liou GS. Donor-Acceptor Effect of Carbazole-Based Conjugated Polymer Electrets on Photoresponsive Flash Organic Field-Effect Transistor Memories. ACS Appl Mater Interfaces 2020; 12:6144-6150. [PMID: 31918540 DOI: 10.1021/acsami.9b20960] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The molecular structure of polymer electrets is crucial for creating diverse functionalities of organic field-effect transistor (OFET) devices. Herein, a conceptual framework has been applied in this study to design the highly photoresponsive carbazole-based copolymer electret materials for the application of photoresponsive OFET memory. As an electret layer, two 1,8-carbazole-based copolymers were utilized; the copoly(CT) consisted of carbazole as the donor group and thiophene as the π-spacer, whereas the copoly(CBT) was further introduced as an acceptor moiety, benzothiadiazole, for comparison. Both copolymers exhibited efficient visible-light absorption and photoluminescence quenching in the film state, indicating the formation of a considerable number of nonemissive excitons, one of the crucial factors for achieving photoinduced recovery behavior in OFET memories. Compared to copoly(CT) with the pure donor system, faster and more effective photoinduced recovery behavior was discovered in the copoly(CBT) with the conjugated donor-acceptor structure because of the coexistence of the conjugated donor and acceptor groups. Thus, the dissociation of the generated excitons facilitated the stimulating of the unique ambipolar trapping property, resulting in the high-density data storage devices with multilevel current states. In addition, the nonvolatile and durable characteristics demonstrated the feasibility in application of memory and photorecorders.
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Affiliation(s)
- Chia-Hui Chen
- Institute of Polymer Science and Engineering , National Taiwan University , No.1, Sec. 4, Roosevelt Road , Taipei 10617 , Taiwan
| | - Yang Wang
- Department of Materials Science and Engineering , Tokyo Institute of Technology , 2-12-1 Ookayama , Meguro-ku, Tokyo 152-8552 , Japan
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering , Tokyo Institute of Technology , 2-12-1 Ookayama , Meguro-ku, Tokyo 152-8552 , Japan
| | - Shu-Wei Chang
- Department of Chemical Engineering , National Taiwan University of Science and Technology , No.43, Sec. 4, Keelung Rd. , Da'an Dist., Taipei City 10607 , Taiwan
| | - Yu-Cheng Chiu
- Department of Chemical Engineering , National Taiwan University of Science and Technology , No.43, Sec. 4, Keelung Rd. , Da'an Dist., Taipei City 10607 , Taiwan
- Advanced Research Center for Green Materials Science and Technology , National Taiwan University , Taipei 10617 , Taiwan
| | - Chun-Yao Ke
- Institute of Polymer Science and Engineering , National Taiwan University , No.1, Sec. 4, Roosevelt Road , Taipei 10617 , Taiwan
| | - Guey-Sheng Liou
- Institute of Polymer Science and Engineering , National Taiwan University , No.1, Sec. 4, Roosevelt Road , Taipei 10617 , Taiwan
- Advanced Research Center for Green Materials Science and Technology , National Taiwan University , Taipei 10617 , Taiwan
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22
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Tane S, Michinobu T. Cu(I)‐catalyzed azide–alkyne cycloaddition synthesis and fluorescent ion sensor behavior of carbazole‐triazole‐fluorene conjugated polymers. POLYM INT 2020. [DOI: 10.1002/pi.5976] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Shizuka Tane
- Department of Organic and Polymeric Materials Tokyo Institute of Technology Tokyo Japan
| | - Tsuyoshi Michinobu
- Department of Organic and Polymeric Materials Tokyo Institute of Technology Tokyo Japan
- Department of Materials Science and Engineering Tokyo Institute of Technology Tokyo Japan
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23
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Kim SW, Wang Y, You H, Lee W, Michinobu T, Kim BJ. Impact of Incorporating Nitrogen Atoms in Naphthalenediimide-Based Polymer Acceptors on the Charge Generation, Device Performance, and Stability of All-Polymer Solar Cells. ACS Appl Mater Interfaces 2019; 11:35896-35903. [PMID: 31532612 DOI: 10.1021/acsami.9b12037] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Substitution of C atoms in a polymer backbone by N atoms allows for the facile tuning of the energy levels as well as the backbone conformation and packing structures of conjugated polymers. Herein, we report a series of three polymer acceptors (PAs) with N atoms introduced at different positions of the backbone and investigate how these N atoms affect the device performances of all-polymer solar cells (all-PSCs). The three PAs, namely, P(NDI2DT-BTT), P(NDI2DT-PTT), and P(NDI2DT-BTTz), are composed of naphthalenediimide (NDI)-based and benzothiadiazole (BT)-based derivatives (dithiophene-BT (BTT), dithiophene-thiadiazolepyridine (PTT), and dithiazole-BT (BTTz)). The PTT and BTTz units are synthesized by replacing the C atoms in BT and thiophene, respectively, with N atoms, which effectively tune the optical, electrochemical, and charge-transporting properties of the corresponding PAs. The all-PSCs using poly[(2,6-(4,8-bis(5-(2-ethylhexyl)thiophen-2-yl))benzo[1,2-b:4,5-b']dithiophene)-co-(1,3-di(5-thiophene-2-yl)-5,7-bis(2-ethylhexyl)benzo[1,2-c:4,5-c']dithiophene-4,8-dione)] (PBDB-T) as a polymer donor and P(NDI2DT-PTT) as PA exhibit a significantly enhanced power conversion efficiency (PCE) of 6.95%, whereas the all-PSCs based on the other PAs show relatively lower PCEs (6.02% for PBDB-T:P(NDI2DT-BTT) and 1.43% for PBDB-T:P(NDI2DT-BTTz)). The high PCE of the PBDB-T:P(NDI2DT-PTT) device is due to the superior charge transfer and charge dissociation, resulting from the closely matched energy levels between PBDB-T and P(NDI2DT-PTT), as well as a more favorable bulk heterojunction morphology with improved miscibility. Importantly, the P(NDI2DT-PTT)-based all-PSC device shows improved air stability compared to the P(NDI2DT-BTT)-based device, which is most likely due to a decreased lowest unoccupied molecular orbital level of the PA. Our findings suggest that the incorporation of N atoms into the PAs is an effective strategy for improving the efficiency and stability of all-PSCs.
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Affiliation(s)
- Sang Woo Kim
- Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea
| | - Yang Wang
- Department of Materials Science and Engineering , Tokyo Institute of Technology , Tokyo 152-8552 , Japan
| | - Hoseon You
- Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea
| | - Wonho Lee
- Department of Polymer Science and Engineering , Kumoh National Institute of Technology , Gumi 39177 , Republic of Korea
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering , Tokyo Institute of Technology , Tokyo 152-8552 , Japan
| | - Bumjoon J Kim
- Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea
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24
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Wang Y, Hasegawa T, Matsumoto H, Michinobu T. Significant Difference in Semiconducting Properties of Isomeric All‐Acceptor Polymers Synthesized via Direct Arylation Polycondensation. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904966] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yang Wang
- Department of Materials Science and Engineering Tokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku Tokyo 152-8552 Japan
- Current address: Emergent Molecular Function Research Team Center for Emergent Matter Science (CEMS) RIKEN 2-1 Hirosawa Wako Saitama 351-0198 Japan
| | - Tsukasa Hasegawa
- Department of Materials Science and Engineering Tokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku Tokyo 152-8552 Japan
| | - Hidetoshi Matsumoto
- Department of Materials Science and Engineering Tokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku Tokyo 152-8552 Japan
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering Tokyo Institute of Technology 2-12-1 Ookayama, Meguro-ku Tokyo 152-8552 Japan
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25
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Wang Y, Hasegawa T, Matsumoto H, Michinobu T. Significant Difference in Semiconducting Properties of Isomeric All-Acceptor Polymers Synthesized via Direct Arylation Polycondensation. Angew Chem Int Ed Engl 2019; 58:11893-11902. [PMID: 31210386 DOI: 10.1002/anie.201904966] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2019] [Indexed: 01/11/2023]
Abstract
The direct arylation polycondensation (DArP) appeared as an efficient method for producing semiconducting polymers but often requires acceptor monomers with orienting or activating groups for the reactive carbon-hydrogen (C-H) bonds, which limits the choice of acceptor units. In this study, we describe a DArP for producing high-molecular-weight all-acceptor polymers composed of the acceptor monomers without any orienting or activating groups via a modified method using Pd/Cu co-catalysts. We thus obtained two isomeric all-acceptor polymers, P1 and P2, which have the same backbone and side-chains but different positions of the nitrogen atoms in the thiazole units. This subtle change significantly influences their optoelectronic, molecular packing, and charge-transport properties. P2 with a greater backbone torsion has favorable edge-on orientations and a high electron mobility μe of 2.55 cm2 V-1 s-1 . Moreover, P2-based transistors show an excellent shelf-storage stability in air even after the storage for 1 month.
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Affiliation(s)
- Yang Wang
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan.,Current address: Emergent Molecular Function Research Team, Center for Emergent Matter Science (CEMS), RIKEN, 2-1 Hirosawa, Wako, Saitama, 351-0198, Japan
| | - Tsukasa Hasegawa
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Hidetoshi Matsumoto
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
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26
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Said AA, Xie J, Wang Y, Wang Z, Zhou Y, Zhao K, Gao WB, Michinobu T, Zhang Q. Efficient Inverted Perovskite Solar Cells by Employing N-Type (D-A 1 -D-A 2 ) Polymers as Electron Transporting Layer. Small 2019; 15:e1803339. [PMID: 30370590 DOI: 10.1002/smll.201803339] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 10/09/2018] [Indexed: 06/08/2023]
Abstract
It is highly desirable to employ n-type polymers as electron transporting layers (ETLs) in inverted perovskite solar cells (PSCs) due to their good electron mobility, high hydrophobicity, and simplicity of film forming. In this research, the capability of three n-type donor-acceptor1 -donor-acceptor2 (D-A1 -D-A2 ) conjugated polymers (pBTT, pBTTz, and pSNT) is first explored as ETLs because these polymers possess electron mobilities as high as 0.92, 0.46, and 4.87 cm2 (Vs)-1 in n-channel organic transistors, respectively. The main structural difference among pBTT, pBTTz, and pSNT is the position of sp2 -nitrogen atoms (sp2 -N) in the polymer main chains. Therefore, the effect of different substitution positions on the PSC performances is comprehensively studied. The as-fabricated p-i-n PSCs with pBTT, pBTTz, and pSNT as ETLs show the maximum photoconversion efficiencies of 12.8%, 14.4%, and 12.0%, respectively. To be highlighted, pBTTz-based device can maintain 80% of its stability after ten days due to its good hydrophobicity, which is further confirmed by a contact angle technique. More importantly, the pBTTz-based device shows a neglected hysteresis. This study reveals that the n-type polymers can be promising candidates as ETLs to approach solution-processed highly-efficient inverted PSCs.
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Affiliation(s)
- Ahmed Ali Said
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, Singapore
| | - Jian Xie
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, Singapore
| | - Yang Wang
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Zongrui Wang
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, Singapore
| | - Yu Zhou
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Kexiang Zhao
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, Singapore
| | - Wei-Bo Gao
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, 637371, Singapore
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Qichun Zhang
- School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, 639798, Singapore, Singapore
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27
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Wang Y, Kim SW, Lee J, Matsumoto H, Kim BJ, Michinobu T. Dual Imide-Functionalized Unit-Based Regioregular D-A 1-D-A 2 Polymers for Efficient Unipolar n-Channel Organic Transistors and All-Polymer Solar Cells. ACS Appl Mater Interfaces 2019; 11:22583-22594. [PMID: 31142111 DOI: 10.1021/acsami.9b05537] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The demand for the development of more promising n-type semiconducting polymers with excellent electron mobilities and air stabilities is growing fast. In this study, we designed and synthesized a series of new dual imide-functionalized derivative-based regioregular D-A1-D-A2 copolymers with different side chains (namely, PNT-R, R = 2-decyltetradecyl (DT), 2-octadecyldodecyl (OD), and 2-hexyldecyl (HD)). These new polymers PNT-R showed strong electron affinities with deep lowest unoccupied molecular orbital (LUMO) levels down to -4.01 eV, indicating that they are promising electron-transporting materials. To optimize the electron mobility, side-chain engineering was adopted. Thus, the effects of the side-chain length on their optoelectronic and charge-transport properties as well as the performances of all-polymer solar cells (all-PSCs) were systematically investigated. Shortening the side-chain length significantly expanded the absorption range, deepened the LUMO energy level, strengthened the molecular packing properties, and developed more crystalline microstructures in the solid state, as evidenced by the ultraviolet-visible absorption spectra, cyclic voltammetry, synchrotron two-dimensional grazing-incidence wide-angle X-ray scattering, and atomic force microscopy measurements. Consequently, the highest electron mobility of 1.05 cm2 V-1 s-1 was achieved in PNT-HD-based organic thin-film transistors (OTFTs). Also, PNT-R polymers were successfully applied as electron acceptors in all-PSCs. In good agreement with the OTFT results, the highest power conversion efficiency of 6.62% was obtained for the PNT-HD-blend film due to its excellent short-circuit current ( Jsc) value (12.07 mA cm-2), which was much higher than that of the PNT-DT- and PNT-OD-based all-PSCs (7.67 and 10.19 mA cm-2, respectively). By further investigating the dependence of the Jsc and open-circuit voltage ( Voc) on the illuminated light intensity ( P), the high Jsc value of the PNT-HD-based device was found to originate from its highly suppressed mono- and bimolecular recombination as well as efficient exciton dissociation and charge transfer at the donor-acceptor interfaces. Overall, this study provides insights into the naphthalenediimide-based regioregular D-A1-D-A2 copolymers used in all-PSCs and offers important design guidelines for future development of n-type semiconducting polymers.
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Affiliation(s)
- Yang Wang
- Department of Materials Science and Engineering , Tokyo Institute of Technology , 2-12-1 Ookayama , Meguro-ku, Tokyo 152-8552 , Japan
| | - Sang Woo Kim
- Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea
| | - Junbok Lee
- Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea
| | - Hidetoshi Matsumoto
- Department of Materials Science and Engineering , Tokyo Institute of Technology , 2-12-1 Ookayama , Meguro-ku, Tokyo 152-8552 , Japan
| | - Bumjoon J Kim
- Department of Chemical and Biomolecular Engineering , Korea Advanced Institute of Science and Technology (KAIST) , Daejeon 34141 , Republic of Korea
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering , Tokyo Institute of Technology , 2-12-1 Ookayama , Meguro-ku, Tokyo 152-8552 , Japan
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28
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Affiliation(s)
- Tsuyoshi Michinobu
- Department of Materials Science and Engineering, Tokyo Institute of Technology
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29
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Affiliation(s)
- Gabriela Lisa
- Department of Chemical Engineering, Cristofor Simionescu Faculty of Chemical Engineering and Environmental ProtectionGheorghe Asachi Technical University of Iasi 73 Professor Doctor Docent Dimitrie Mangeron Street, Iasi 700050 Romania
| | - Yoko Yoshitake
- Department of Materials Science and EngineeringTokyo Institute of Technology 2‐12‐1 Ookayama, Meguro‐Ku Tokyo 152‐8552 Japan
| | - Tsuyoshi Michinobu
- Department of Materials Science and EngineeringTokyo Institute of Technology 2‐12‐1 Ookayama, Meguro‐Ku Tokyo 152‐8552 Japan
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30
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Guo H, Wang Y, Wang R, Liu S, Huang K, Michinobu T, Dong G. Poly(dithiazolfluorene- alt-selenadiazolobenzotriazole)-Based Blue-Light Photodetector and Its Application in Visible-Light Communication. ACS Appl Mater Interfaces 2019; 11:16758-16764. [PMID: 30990010 DOI: 10.1021/acsami.9b00467] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Conjugated polymers have attracted broad interest from synthetic chemists and device developers in optoelectronic fields. In this study, we report a blue-light organic photodetector (OPD) based on our low-band and ambipolar PSeN polymer. Besides high stability, the device has excellent color-selective property in the visible-light region. At the bias of -3 V, the ratio of the external quantum efficiency (EQE) in blue to red is more than 10:1. Meanwhile, the device also shows very low dark current density of ∼21 nA/cm2 and high EQE more than 100% for blue light at the bias of -3 V. Then, the mechanism of the high EQE in single-sensitive layer structure devices is analyzed by considering the activation energy of traps and carrier injection. Furthermore, for portable purposes, a flexible blue-light OPD is designed. This OPD shows a great orthogonal light response to blue and orange contents in a white light source and will be a potential candidate in a two-channel visible-light communication system.
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Affiliation(s)
| | - Yang Wang
- Department of Materials Science and Engineering , Tokyo Institute of Technology , Meguro-ku, Tokyo 152-8552 , Japan
| | | | | | | | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering , Tokyo Institute of Technology , Meguro-ku, Tokyo 152-8552 , Japan
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31
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Affiliation(s)
- Satomi Fukushima
- Department of Organic and Polymeric MaterialsTokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku Tokyo 152-8552 Japan
| | - Minoru Ashizawa
- Department of Organic and Polymeric MaterialsTokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku Tokyo 152-8552 Japan
| | - Susumu Kawauchi
- Department of Organic and Polymeric MaterialsTokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku Tokyo 152-8552 Japan
| | - Tsuyoshi Michinobu
- Department of Organic and Polymeric MaterialsTokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku Tokyo 152-8552 Japan
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32
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Wang Y, Hasegawa T, Matsumoto H, Michinobu T. Significant Improvement of Unipolar n-Type Transistor Performances by Manipulating the Coplanar Backbone Conformation of Electron-Deficient Polymers via Hydrogen Bonding. J Am Chem Soc 2019; 141:3566-3575. [DOI: 10.1021/jacs.8b12499] [Citation(s) in RCA: 95] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Yang Wang
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Tsukasa Hasegawa
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Hidetoshi Matsumoto
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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33
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Fujita H, Michinobu T. Covalent layer-by-layer thin films with charge-transfer chromophores: side chain engineering for efficient Ag + ion recognition in aqueous solutions. Soft Matter 2018; 14:9055-9060. [PMID: 30393801 DOI: 10.1039/c8sm01986j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Covalent layer-by-layer (LbL) thin films are fabricated by a highly efficient [2+2] cycloaddition-retroelectrocyclization (CA-RE) reaction of aniline-substituted alkyne and 7,7,8,8-tetracyanoquinodimethane (TCNQ) moieties. Polystyrene bearing aniline-substituted alkyne side chains and TCNQ polyester were prepared as precursor polymers, then sequentially deposited and fixed by covalent bonds on an indium-tin-oxide (ITO) substrate. The successful alternate growth of the films was demonstrated by many techniques including absorption spectroscopy, surface roughness, and redox activities. Interestingly, the water contact angles of the film surface were dependent on the side chains of the polystyrene derivatives. When hydrophilic triethylene glycol was employed, the surface hydrophilicity was similar to that of the TCNQ polyester. In contrast, the use of hydrophobic n-hexyl groups resulted in a significant difference in the water contact angles between the polystyrene and TCNQ polyester. A similar difference occurred when the Ag+ ion recognition was studied by soaking the LbL films in aqueous solutions. The LbL films constructed from the polystyrene with triethylene glycol chains displayed a more rapid and significant recognition of Ag+ ions than those constructed from the polystyrene with n-hexyl chains.
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Affiliation(s)
- Hiroyuki Fujita
- Department of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan.
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Fujita H, Nihei N, Bito M, Michinobu T. Antibacterial Polymeric Films Fabricated by [2+2] Cycloaddition-Retroelectrocyclization and Ag + Ion Coordination. Macromol Biosci 2018; 18:e1800336. [PMID: 30408332 DOI: 10.1002/mabi.201800336] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 10/12/2018] [Indexed: 12/26/2022]
Abstract
The [2+2] cycloaddition-retroelectrocyclization (CA-RE) between N,N-dialkylaniline-substituted alkynes and 7,7,8,8-tetracyanoquinodimethane (TCNQ) is employed to fabricate functional cross-linked polymer films containing the intramolecular charge-transfer (CT) chromophores at the cross-linking points. Polystyrene bearing N,N-dialkylaniline-substituted alkynes (P1) and TCNQ polyester (P2) are mixed in tetrahydrofuran (THF), then this solution is spray-coated onto an indium tin oxide or glass plate. Heating to 100 °C initiates the [2+2] CA-RE reaction, resulting in the formation of cross-linked polymer films. The reaction progress and completion are evaluated by monitoring the CT absorption band and cyano vibration peaks. The resulting cross-linked polymer films show reversible cathodic electrochromism between the neutral and anion radical states. In addition, they also display the visual detection behavior of protic acids and Lewis acids, such as Ag+ ions. Accordingly, the Ag+ ion-loaded polymer films are prepared, and their antibacterial activities are studied. As more Ag+ ions are loaded, the CT band more bathochromically shifts and more potent antibacterial activities are obtained. Therefore, the antibacterial activity of the polymer films can be visually recognized by the film colors. Furthermore, the loaded Ag+ ions can be released from the polymer films by application of an electrochemical potential.
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Affiliation(s)
- Hiroyuki Fujita
- Department of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Nahoko Nihei
- J-Chemical, Inc., 8-1 Akashi-cho, Chuo-ku, Tokyo, 104-0044, Japan
| | - Masami Bito
- J-Chemical, Inc., 8-1 Akashi-cho, Chuo-ku, Tokyo, 104-0044, Japan
| | - Tsuyoshi Michinobu
- Department of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
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35
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Kajisa T, Li W, Michinobu T, Sakata T. Well-designed dopamine-imprinted polymer interface for selective and quantitative dopamine detection among catecholamines using a potentiometric biosensor. Biosens Bioelectron 2018; 117:810-817. [DOI: 10.1016/j.bios.2018.07.014] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Revised: 07/05/2018] [Accepted: 07/09/2018] [Indexed: 01/07/2023]
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36
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Kajisa T, Li W, Michinobu T. Catecholamine Detection Using a Functionalized Poly(l-dopa)-Coated Gate Field-Effect Transistor. ACS Omega 2018; 3:6719-6727. [PMID: 30023958 PMCID: PMC6044613 DOI: 10.1021/acsomega.8b00518] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 06/08/2018] [Indexed: 06/08/2023]
Abstract
A highly sensitive catecholamine (CA) sensor was created using a biointerface layer composed of a biopolymer and a potentiometric detection device. For the detection of CAs, 3-aminophenylboronic acid (3-NH2-PBA) was reacted with the carboxyl side chain of l-3,4-dihydroxyphenylalanine (l-dopa, LD) and the PBA-modified l-dopa was directly copolymerized with LD on an Au electrode, resulting in a 3.5 nm thick PBA-modified poly(PBA-LD/LD) layer-coated Au electrode. By connecting the PBA-LD-coated Au electrode to a field-effect transistor (FET), the molecular charge changes at the biointerface of the Au electrode, which was caused by di-ester binding of the PBA-CA complex, were transduced into gate surface potential changes. Effective CAs included LD, dopamine (DA), norepinephrine (NE), and epinephrine (EP). The surface potential of the PBA-LD-coated Au changed after the addition of 40 nM of each CA solution; notably, the PBA-LD-coated Au showed a higher sensitivity to LD because the surface potential change could already be observed after 1 nM of LD was added. The fundamental parameter analyses of the PBA-LD to CA affinity from the surface potential shift against each CA concentration indicated the highest affinity to LD (binding constant (Ks): 1.68 × 106 M-1, maximum surface potential shift (Vmax): 182 mV). Moreover, the limit of detection for each CA was 3.5 nM in LD, 12.0 nM in DA, 7.5 nM in NE, and 12.6 nM in EP. From these results, it is concluded that the poly(PBA-LD/LD)-coated gate FET could become a useful biosensor for neurotransmitters, hormones, and early detection of Parkinson's disease.
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Affiliation(s)
- Taira Kajisa
- PROVIGATE
Inc., The University of Tokyo Entrepreneur Plaza, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Wei Li
- Department
of Materials Science and Engineering, Tokyo
Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Tsuyoshi Michinobu
- Department
of Materials Science and Engineering, Tokyo
Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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37
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Abstract
Covalent layer-by-layer (LbL) thin films with the well-defined charge-transfer (CT) chromophores were fabricated by the highly efficient [2 + 2] cycloaddition-retroelectrocyclization (CA-RE) reaction between the dialkylaniline-substituted alkynes and 7,7,8,8-tetracyanoquinodimethane (TCNQ) moieties. The resulting thin films showed potent redox activities and Ag+ ion sensing ability due to the formed CT chromophores.
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Affiliation(s)
- Hiroyuki Fujita
- Department of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Tsuyoshi Michinobu
- Department of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan
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38
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Chen W, Long G, Kanehira K, Zhang M, Michinobu T, Liu M, Zhang Q. A Direct Method to Access Substituted Pyreno[4,5-c:9,10-c′] difuran and its Analogues. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800122] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Wangqiao Chen
- School of Materials Science and Engineering; Nanyang Technological University Singapore; 639798 Singapore Singapore
- Temasek Laboratories @NTU; Nanyang Technological University Singapore; Research Techno Plaza, 50 Nanyang Drive 637553 Singapore Singapore
| | - Guankui Long
- Computational Center for Molecular Science; College of Chemistry; Nankai University; Tianjin 300071 China
| | - Koji Kanehira
- Department of Materials Science and Engineering; Tokyo Institute of Technology, 2-12-1 Ookayama; Meguro-ku Tokyo 152-8552 Japan
| | - Mingtao Zhang
- Computational Center for Molecular Science; College of Chemistry; Nankai University; Tianjin 300071 China
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering; Tokyo Institute of Technology, 2-12-1 Ookayama; Meguro-ku Tokyo 152-8552 Japan
| | - Ming Liu
- Temasek Laboratories @NTU; Nanyang Technological University Singapore; Research Techno Plaza, 50 Nanyang Drive 637553 Singapore Singapore
| | - Qichun Zhang
- School of Materials Science and Engineering; Nanyang Technological University Singapore; 639798 Singapore Singapore
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematics Science; Nanyang Technological University Singapore; 637371 Singapore Singapore
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Wang Y, Hasegawa T, Matsumoto H, Mori T, Michinobu T. High-Performance n-Channel Organic Transistors Using High-Molecular-Weight Electron-Deficient Copolymers and Amine-Tailed Self-Assembled Monolayers. Adv Mater 2018; 30:e1707164. [PMID: 29430748 DOI: 10.1002/adma.201707164] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Indexed: 06/08/2023]
Abstract
While high-performance p-type semiconducting polymers are widely reported, their n-type counterparts are still rare in terms of quantity and quality. Here, an improved Stille polymerization protocol using chlorobenzene as the solvent and palladium(0)/copper(I) as the catalyst is developed to synthesize high-quality n-type polymers with number-average molecular weight up to 105 g mol-1 . Furthermore, by sp2 -nitrogen atoms (sp2 -N) substitution, three new n-type polymers, namely, pBTTz, pPPT, and pSNT, are synthesized, and the effect of different sp2 -N substitution positions on the device performances is studied for the first time. It is found that the incorporation of sp2 -N into the acceptor units rather than the donor units results in superior crystalline microstructures and higher electron mobilities. Furthermore, an amine-tailed self-assembled monolayer (SAM) is smoothly formed on a Si/SiO2 substrate by a simple spin-coating technique, which can facilitate the accumulation of electrons and lead to more perfect unipolar n-type transistor performances. Therefore, a remarkably high unipolar electron mobility up to 5.35 cm2 V-1 s-1 with a low threshold voltage (≈1 V) and high on/off current ratio of ≈107 is demonstrated for the pSNT-based devices, which are among the highest values for unipolar n-type semiconducting polymers.
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Affiliation(s)
- Yang Wang
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Tsukasa Hasegawa
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Hidetoshi Matsumoto
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Takehiko Mori
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo, 152-8552, Japan
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40
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Michinobu T, Diederich F. The [2+2] Cycloaddition-Retroelectrocyclization (CA-RE) Click Reaction: Facile Access to Molecular and Polymeric Push-Pull Chromophores. Angew Chem Int Ed Engl 2018; 57:3552-3577. [DOI: 10.1002/anie.201711605] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2017] [Indexed: 11/12/2022]
Affiliation(s)
- Tsuyoshi Michinobu
- Department of Materials Science and Engineering; Tokyo Institute of Technology; 2-12-1 Ookayama, Meguro-ku Tokyo 1 52-8552 Japan
| | - François Diederich
- Laboratorium für Organische Chemie; ETH Zurich; Vladimir-Prelog-Weg 3 8093 Zurich Switzerland
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41
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Michinobu T, Diederich F. Die [2+2]-Cycloadditions-Retroelektrocyclisierungs(CA-RE)-Klick-Reaktion: ein einfacher Zugang zu molekularen und polymeren Push-pull-Chromophoren. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711605] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Tsuyoshi Michinobu
- Department of Materials Science and Engineering; Tokyo Institute of Technology; 2-12-1 Ookayama, Meguro-ku Tokyo 152-8552 Japan
| | - François Diederich
- Laboratorium für Organische Chemie; ETH-Zürich; Vladimir-Prelog-Weg 3 8093 Zürich Schweiz
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42
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Otsuka R, Wang Y, Mori T, Michinobu T. Linear-type carbazoledioxazine-based organic semiconductors: the effect of backbone planarity on the molecular orientation and charge transport properties. RSC Adv 2018; 8:9822-9832. [PMID: 35540857 PMCID: PMC9078715 DOI: 10.1039/c8ra01088a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2018] [Accepted: 02/27/2018] [Indexed: 12/01/2022] Open
Abstract
We report the synthesis of a linear-type dibromocarbazoledioxazine (CZ) derivative as a new precursor for semiconducting polymers. The chemical structures of the CZ unit and its polymers with thiophene or thienothiophene spacers (namely, PCZT and PCZTT) were fully characterized. PCZT and PCZTT possessed similar medium optical band gap (Eoptg) and electrochemical band gap (Ecvg) of around 1.70 eV estimated from the onset absorption and electrochemical redox potentials of the thin films, respectively. Computational density functional theory (DFT) calculations suggested that the backbone of the PCZT might be highly twisted, while that of PCZTT could be very planar. The effect of different backbone geometries on the charge–transport properties was studied by using thin film transistors (TFTs). The TFT device based on PCZTT showed a four times higher hole mobility as compared to that based on PCZT. The superior TFT performances of PCZTT were reasonably attributed to its edge-on backbone packing orientations toward the Si substrate revealed by the grazing-incidence wide-angle X-ray scattering (GIWAXS), which was favorable for in-plane charge transport in the TFT devices. A linear-type dibromocarbazoledioxazine (CZ) derivative and its two polymers are newly designed and synthesized. Structure–property relationship studies reveal that PCZTT shows a four times higher hole mobility than PCZT.![]()
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Affiliation(s)
- Rikuo Otsuka
- Department of Materials Science and Engineering
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | - Yang Wang
- Department of Materials Science and Engineering
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | - Takehiko Mori
- Department of Materials Science and Engineering
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
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43
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Affiliation(s)
- Yang Wang
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552
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44
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Wang Y, Hosokawa R, Mori T, Michinobu T. Polarity Engineering of Benzobisthiadiazole-Based Polymer Thin Film Transistors by Variation of Electron Affinity of the Comonomers. BCSJ 2017. [DOI: 10.1246/bcsj.20170158] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yang Wang
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Meguro-ku, Tokyo
| | - Ryuhei Hosokawa
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Meguro-ku, Tokyo
| | - Takehiko Mori
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Meguro-ku, Tokyo
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering, Tokyo Institute of Technology, Meguro-ku, Tokyo
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45
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Wang Y, Nakano M, Michinobu T, Kiyota Y, Mori T, Takimiya K. Naphthodithiophenediimide–Benzobisthiadiazole-Based Polymers: Versatile n-Type Materials for Field-Effect Transistors and Thermoelectric Devices. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02313] [Citation(s) in RCA: 117] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Yang Wang
- Emergent
Molecular Function Research Group, RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Department
of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1 Ookayama,
Meguro-ku, Tokyo 152-8552, Japan
| | - Masahiro Nakano
- Emergent
Molecular Function Research Group, RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Tsuyoshi Michinobu
- Department
of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1 Ookayama,
Meguro-ku, Tokyo 152-8552, Japan
| | - Yasuhiro Kiyota
- Department
of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1 Ookayama,
Meguro-ku, Tokyo 152-8552, Japan
| | - Takehiko Mori
- Department
of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1 Ookayama,
Meguro-ku, Tokyo 152-8552, Japan
| | - Kazuo Takimiya
- Emergent
Molecular Function Research Group, RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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Affiliation(s)
- Wei Li
- Department of Materials Science and Engineering, Tokyo Institute of Technology
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering, Tokyo Institute of Technology
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Li W, Otsuka M, Kato T, Wang Y, Mori T, Michinobu T. 3,6-Carbazole vs 2,7-carbazole: A comparative study of hole-transporting polymeric materials for inorganic-organic hybrid perovskite solar cells. Beilstein J Org Chem 2016; 12:1401-9. [PMID: 27559390 PMCID: PMC4979756 DOI: 10.3762/bjoc.12.134] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 06/22/2016] [Indexed: 11/23/2022] Open
Abstract
The ever increasing demand for clean energy has encouraged researchers to intensively investigate environmentally friendly photovoltaic devices. Inorganic-organic hybrid perovskite solar cells (PSCs) are very promising due to their potentials of easy fabrication processes and high power conversion efficiencies (PCEs). Designing hole-transporting materials (HTMs) is one of the key factors in achieving the high PCEs of PSCs. We now report the synthesis of two types of carbazole-based polymers, namely 3,6-Cbz-EDOT and 2,7-Cbz-EDOT, by Stille polycondensation. Despite the same chemical composition, 3,6-Cbz-EDOT and 2,7-Cbz-EDOT displayed different optical and electrochemical properties due to the different connectivity mode of the carbazole unit. Therefore, their performances as hole-transporting polymeric materials in the PSCs were also different. The device based on 2,7-Cbz-EDOT showed better photovoltaic properties with the PCE of 4.47% than that based on 3,6-Cbz-EDOT. This could be due to its more suitable highest occupied molecular orbital (HOMO) level and higher hole mobility.
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Affiliation(s)
- Wei Li
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan and
| | - Munechika Otsuka
- Department of Mechanical Engineering, National Institute of Technology, Oyama College, 771 Nakakuki, Oyama, Tochigi 323-0806, Japan
| | - Takehito Kato
- Department of Mechanical Engineering, National Institute of Technology, Oyama College, 771 Nakakuki, Oyama, Tochigi 323-0806, Japan
| | - Yang Wang
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan and
| | - Takehiko Mori
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan and
| | - Tsuyoshi Michinobu
- Department of Materials Science and Engineering, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8552, Japan and
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Fujita H, Michinobu T, Fukuta S, Koganezawa T, Higashihara T. Sequentially Different AB Diblock and ABA Triblock Copolymers as P3HT:PCBM Interfacial Compatibilizers for Bulk-Heterojunction Photovoltaics. ACS Appl Mater Interfaces 2016; 8:5484-5492. [PMID: 26864393 DOI: 10.1021/acsami.5b12437] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The P3HT:PCBM (P3HT = poly(3-hexylthiophene, PCBM = phenyl-C61-butyric acid methyl ester) bulk-heterojunction (BHJ) organic photovoltaic (OPV) cells using the AB diblock and ABA triblock copolymers (A = polystyrene derivative with donor-acceptor units (PTCNE) and B = P3HT) as compatibilizers were fabricated. Under the optimized blend ratio of the block copolymer, the power conversion efficiency (PCE) was enhanced. This PCE enhancement was clearly related to the increased short-circuit current (J(sc)) and fill factor (FF). The incident photon to current efficiency (IPCE) measurement suggested that the P3HT crystallinity was improved upon addition of the block copolymers. The increased P3HT crystallinity was consistent with the increased photovoltaic parameters, such as J(sc), FF, and consequently the PCE. The surface energies of these block copolymers suggested their thermodynamically stable location at the interface of P3HT:PCBM, showing the efficient compatibilizing performance, resulting in enlarging and fixing the interfacial area and suppressing the recombination of the generated carriers. Grazing incidence X-ray scattering (GIXS) results confirmed the superior compatibilizing performance of the ABA triblock copolymer when compared to the AB diblock copolymer by the fact that, after blending the ABA triblock copolymer in the P3HT:PCBM system, the enhanced crystallinity of matrix P3HT was observed in the excluded areas of the less-aggregated PCBM domains, changing the P3HT crystalline domain orientation from "edge-on" to "isotropic". This is, to the best of our knowledge, the first sequential effect (AB vs ABA) of the block copolymers on the compatibilizing performances based on BHJ OPV device systems.
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Affiliation(s)
- Hiroyuki Fujita
- Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology , 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Tsuyoshi Michinobu
- Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology , 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan
| | - Seijiro Fukuta
- Department of Polymer Science and Engineering, Graduate School of Science and Engineering, Yamagata University , 4-3-16 Jonan, Yonezawa 992-8510, Japan
| | - Tomoyuki Koganezawa
- Japan Synchrotron Radiation Research Institute , 1-1-1 Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Tomoya Higashihara
- Department of Polymer Science and Engineering, Graduate School of Science and Engineering, Yamagata University , 4-3-16 Jonan, Yonezawa 992-8510, Japan
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49
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Affiliation(s)
- Wei Li
- Department of Organic and Polymeric Materials; Tokyo Institute of Technology; 2-12-1 Ookayama Meguro-ku Tokyo 152-8552 Japan
| | - Tsuyoshi Michinobu
- Department of Organic and Polymeric Materials; Tokyo Institute of Technology; 2-12-1 Ookayama Meguro-ku Tokyo 152-8552 Japan
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Abstract
Microwave-assisted direct arylation polycondensation of 3,4-ethylenedioxythiophene produced a solution processable and electrochromic polymer when 3,6-dibromocarbazole was employed as a comonomer.
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Affiliation(s)
- Wei Li
- Department of Organic and Polymeric Materials
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
| | - Tsuyoshi Michinobu
- Department of Organic and Polymeric Materials
- Tokyo Institute of Technology
- Tokyo 152-8552
- Japan
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