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Li Y, Wu W, Wang Y, Huang E, Jeong SY, Woo HY, Guo X, Feng K. Multi-Selenophene Incorporated Thiazole Imide-Based n-Type Polymers for High-Performance Organic Thermoelectrics. Angew Chem Int Ed Engl 2024; 63:e202316214. [PMID: 37996990 DOI: 10.1002/anie.202316214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 11/21/2023] [Accepted: 11/23/2023] [Indexed: 11/25/2023]
Abstract
Developing polymers with high electrical conductivity (σ) after n-doping is a great challenge for the advance of the field of organic thermoelectrics (OTEs). Herein, we report a series of thiazole imide-based n-type polymers by gradually increasing selenophene content in polymeric backbone. Thanks to the strong intramolecular noncovalent N⋅⋅⋅S interaction and enhanced intermolecular Se⋅⋅⋅Se interaction, with the increase of selenophene content, the polymers show gradually lowered LUMOs, more planar backbone, and improved film crystallinity versus the selenophene-free analogue. Consequently, polymer PDTzSI-Se with the highest selenophene content achieves a champion σ of 164.0 S cm-1 and a power factor of 49.0 μW m-1 K-2 in the series when applied in OTEs after n-doping. The σ value is the highest one for n-type donor-acceptor OTE materials reported to date. Our work indicates that selenophene substitution is a powerful strategy for developing high-performance n-type OTE materials and selenophene incorporated thiazole imides offer an excellent platform in enabling n-type polymers with high backbone coplanarity, deep-lying LUMO and enhanced mobility/conductivity.
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Affiliation(s)
- Yongchun Li
- Department of Materials Science and Engineering, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong, 518055, China
| | - Wenchang Wu
- Department of Materials Science and Engineering, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong, 518055, China
| | - Yimei Wang
- Department of Materials Science and Engineering, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong, 518055, China
| | - Enmin Huang
- Department of Materials Science and Engineering, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong, 518055, China
| | - Sang Young Jeong
- Department of Chemistry, Korea University, Seoul, 136-713, South Korea
| | - Han Young Woo
- Department of Chemistry, Korea University, Seoul, 136-713, South Korea
| | - Xugang Guo
- Department of Materials Science and Engineering, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong, 518055, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong, 523808, China
| | - Kui Feng
- Department of Materials Science and Engineering, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong, 518055, China
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology (SUSTech), Shenzhen, Guangdong, 518055, China
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2
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Can A, Deneme I, Demirel G, Usta H. Solution-Processable Indenofluorenes on Polymer Brush Interlayer: Remarkable N-Channel Field-Effect Transistor Characteristics under Ambient Conditions. ACS APPLIED MATERIALS & INTERFACES 2023; 15:41666-41679. [PMID: 37582254 PMCID: PMC10485804 DOI: 10.1021/acsami.3c07365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 08/04/2023] [Indexed: 08/17/2023]
Abstract
The development of solution-processable n-type molecular semiconductors that exhibit high electron mobility (μe ≥ 0.5 cm2/(V·s)) under ambient conditions, along with high current modulation (Ion/Ioff ≥ 106-107) and near-zero turn on voltage (Von) characteristics, has lagged behind that of other semiconductors in organic field-effect transistors (OFETs). Here, we report the design, synthesis, physicochemical and optoelectronic characterizations, and OFET performances of a library of solution-processable, low-LUMO (-4.20 eV) 2,2'-(2,8-bis(3-alkylthiophen-2-yl)indeno[1,2-b]fluorene-6,12-diylidene)dimalononitrile small molecules, β,β'-Cn-TIFDMTs, having varied alkyl chain lengths (n = 8, 12, 16). An intriguing correlation is identified between the solid-isotropic liquid transition enthalpies and the solubilities, indicating that cohesive energetics, which are tuned by alkyl chains, play a pivotal role in determining solubility. The semiconductors were spin-coated under ambient conditions on densely packed (grafting densities of 0.19-0.45 chains/nm2) ultrathin (∼3.6-6.6 nm) polystyrene-brush surfaces. It is demonstrated that, on this polymer interlayer, thermally induced dispersive interactions occurring over a large number of methylene units between flexible alkyl chains (i.e., zipper effect) are critical to achieve a favorable thin-film crystallization with a proper microstructure and morphology for efficient charge transport. While C8 and C16 chains show a minimal zipper effect upon thermal annealing, C12 chains undergo an extended interdigitation involving ∼6 methylene units. This results in the formation of large crystallites having lamellar stacking ((100) coherence length ∼30 nm) in the out-of-plane direction and highly favorable in-plane π-interactions in a slipped-stacked arrangement. Uninterrupted microstructural integrity (i.e., no face-on (010)-oriented crystallites) was found to be critical to achieving high mobilities. The excellent crystallinity of the C12-substituted semiconductor thin film was also evident in the observed crystal lattice vibrations (phonons) at 58 cm-1 in low-frequency Raman scattering. Two-dimensional micrometer-sized (∼1-3 μm), sharp-edged plate-like grains lying parallel with the substrate plane were observed. OFETs fabricated by the current small molecules showed excellent n-channel behavior in ambient with μe values reaching ∼0.9 cm2/(V·s), Ion/Ioff ∼ 107-108, and Von ≈ 0 V. Our study not only demonstrates one of the highest performing n-channel OFET devices reported under ambient conditions via solution processing but also elucidates significant relationships among chemical structures, molecular properties, self-assembly from solution into a thin film, and semiconducting thin-film properties. The design rationales presented herein may open up new avenues for the development of high-electron-mobility novel electron-deficient indenofluorene and short-axis substituted donor-acceptor π-architectures via alkyl chain engineering and interface engineering.
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Affiliation(s)
- Ayse Can
- Department
of Nanotechnology Engineering, Abdullah
Gül University, 38080 Kayseri, Turkey
| | - Ibrahim Deneme
- Department
of Nanotechnology Engineering, Abdullah
Gül University, 38080 Kayseri, Turkey
| | - Gokhan Demirel
- Bio-inspired
Materials Research Laboratory (BIMREL), Department of Chemistry, Gazi University, 06500 Ankara, Turkey
| | - Hakan Usta
- Department
of Nanotechnology Engineering, Abdullah
Gül University, 38080 Kayseri, Turkey
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Liu H, Liu D, Yang J, Gao H, Wu Y. Flexible Electronics Based on Organic Semiconductors: from Patterned Assembly to Integrated Applications. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2206938. [PMID: 36642796 DOI: 10.1002/smll.202206938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/26/2022] [Indexed: 06/17/2023]
Abstract
Organic flexible electronic devices are at the forefront of the electronics as they possess the potential to bring about a major lifestyle revolution owing to outstanding properties of organic semiconductors, including solution processability, lightweight and flexibility. For the integration of organic flexible electronics, the precise patterning and ordered assembly of organic semiconductors have attracted wide attention and gained rapid developments, which not only reduces the charge crosstalk between adjacent devices, but also enhances device uniformity and reproducibility. This review focuses on recent advances in the design, patterned assembly of organic semiconductors, and flexible electronic devices, especially for flexible organic field-effect transistors (FOFETs) and their multifunctional applications. First, typical organic semiconductor materials and material design methods are introduced. Based on these organic materials with not only superior mechanical properties but also high carrier mobility, patterned assembly strategies on flexible substrates, including one-step and two-step approaches are discussed. Advanced applications of flexible electronic devices based on organic semiconductor patterns are then highlighted. Finally, future challenges and possible directions in the field to motivate the development of the next generation of flexible electronics are proposed.
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Affiliation(s)
- Haoran Liu
- Ji Hua Laboratory, Foshan, Guangdong, 528000, P. R. China
| | - Dong Liu
- Key Laboratory of Industrial Biocatalysis, Ministry of Education, Department of Chemical Engineering, Tsinghua University, Beijing, 100084, P. R. China
| | - Junchuan Yang
- Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Hanfei Gao
- Ji Hua Laboratory, Foshan, Guangdong, 528000, P. R. China
| | - Yuchen Wu
- Ji Hua Laboratory, Foshan, Guangdong, 528000, P. R. China
- Key Laboratory of Bio-inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
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Ozcan E, Ozdemir M, Ho D, Zorlu Y, Ozdemir R, Kim C, Usta H, Cosut B. A Solution-Processable meso-Phenyl-BODIPY-Based n-Channel Semiconductor with Enhanced Fluorescence Emission. Chempluschem 2020; 84:1423-1431. [PMID: 31944046 DOI: 10.1002/cplu.201900317] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2019] [Revised: 06/04/2019] [Indexed: 12/22/2022]
Abstract
The molecular design, synthesis, and characterization of an acceptor-donor-acceptor (A-D-A) semiconductor BDY-Ph-2T-Ph-BDY comprising a central phenyl-bithiophene-phenyl π-donor and BODIPY π-acceptor end-units is reported. The semiconductor shows an optical band gap of 2.32 eV with a highly stabilized HOMO/LUMO (-5.74 eV/-3.42 eV). Single-crystal X-ray diffraction (XRD) reveals D-A dihedral angle of ca. 66° and strong intermolecular "C-H ⋅⋅⋅ π (3.31 Å)" interactions. Reduced π-donor strength, increased D-A dihedral angle, and restricted intramolecular D-A rotations allows for both good fluorescence efficiency (ΦF =0.30) and n-channel OFET transport (μe =0.005 cm2 /V ⋅ s; Ion /Ioff =104 -105 ). This indicates a much improved (6-fold) fluorescence quantum yield compared to the meso-thienyl BODIPY semiconductor BDY-4T-BDY. Photophysical studies reveal important transitions between locally excited (LE) and twisted intramolecular charge-transfer (TICT) states in solution and the solid state, which could be controlled by solvent polarity and nano-aggregation. This is the first report of such high emissive characteristics for a BODIPY-based n-channel semiconductor.
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Affiliation(s)
- Emrah Ozcan
- Department of Chemistry, Gebze Technical University Gebze, Kocaeli, Turkey
| | - Mehmet Ozdemir
- Department of Materials Science and Nanotechnology Engineering, Abdullah Gül University, Kayseri, Turkey
| | - Dongil Ho
- Department of Chemical and Biomolecular Engineering, Sogang University Mapo-gu, Seoul, Republic of Korea
| | - Yunus Zorlu
- Department of Chemistry, Gebze Technical University Gebze, Kocaeli, Turkey
| | - Resul Ozdemir
- Department of Materials Science and Nanotechnology Engineering, Abdullah Gül University, Kayseri, Turkey
| | - Choongik Kim
- Department of Chemical and Biomolecular Engineering, Sogang University Mapo-gu, Seoul, Republic of Korea
| | - Hakan Usta
- Department of Materials Science and Nanotechnology Engineering, Abdullah Gül University, Kayseri, Turkey
| | - Bunyemin Cosut
- Department of Chemistry, Gebze Technical University Gebze, Kocaeli, Turkey
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Lin G, Wang L, Yang Y, Liu Z, Zhang G, Zhang D. An A-D-A'-D-A Conjugated Molecule Entailing Diazapentalene Unit for an n-Type Organic Semiconductor. Chem Asian J 2019; 14:1712-1716. [PMID: 30600923 DOI: 10.1002/asia.201801691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2018] [Revised: 12/21/2018] [Indexed: 11/07/2022]
Abstract
Conjugated molecules with low lying LUMO levels are demanding for the development of air stable n-type organic semiconductors. In this paper, we report a new A-D-A'-D-A conjugated molecule (DAPDCV) entailing diazapentalene (DAP) and dicyanovinylene groups as electron accepting units. Both theoretical and electrochemical studies manifest that the incorporation of DAP unit in the conjugated molecule can effectively lower the LUMO energy level. Accordingly, thin film of DAPDCV shows n-type semiconducting behavior with electron mobility up to 0.16 cm2 ⋅V-1 ⋅s-1 after thermal annealing under N2 atmosphere. Moreover, thin film of DAPDCV also shows stable n-type transporting property in air with mobility reaching 0.078 cm2 ⋅V-1 ⋅s-1 .
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Affiliation(s)
- Gaobo Lin
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, CAS Center of Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Lingna Wang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, CAS Center of Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Yizhou Yang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, CAS Center of Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
| | - Zitong Liu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, CAS Center of Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China
| | - Guanxin Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, CAS Center of Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China
| | - Deqing Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, CAS Center of Excellence in Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P.R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P.R. China
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A Ladder-Type Organosilicate Copolymer Gate Dielectric Materials for Organic Thin-Film Transistors. COATINGS 2018. [DOI: 10.3390/coatings8070236] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Ozdemir R, Park S, Deneme İ, Park Y, Zorlu Y, Alidagi HA, Harmandar K, Kim C, Usta H. Triisopropylsilylethynyl-substituted indenofluorenes: carbonyl versus dicyanovinylene functionalization in one-dimensional molecular crystals and solution-processed n-channel OFETs. Org Chem Front 2018. [DOI: 10.1039/c8qo00856f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Carbonyl vs. dicyanovinylene functionalization in indenofluorenes leads to substantial differences in solid-state packings and results in significant variations (×1000) in electron mobilities.
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Affiliation(s)
- Resul Ozdemir
- Department of Materials Science and Nanotechnology Engineering
- Abdullah Gül University
- Kayseri
- Turkey
| | - Sangyun Park
- Department of Chemical and Biomolecular Engineering
- Sogang University
- Mapo-gu
- Republic of Korea
| | - İbrahim Deneme
- Department of Materials Science and Nanotechnology Engineering
- Abdullah Gül University
- Kayseri
- Turkey
| | - Yonghan Park
- Department of Chemical and Biomolecular Engineering
- Sogang University
- Mapo-gu
- Republic of Korea
| | - Yunus Zorlu
- Department of Chemistry
- Gebze Technical University
- Gebze
- Turkey
| | - Husniye Ardic Alidagi
- Department of Materials Science and Nanotechnology Engineering
- Abdullah Gül University
- Kayseri
- Turkey
- Department of Chemistry
| | | | - Choongik Kim
- Department of Chemical and Biomolecular Engineering
- Sogang University
- Mapo-gu
- Republic of Korea
| | - Hakan Usta
- Department of Materials Science and Nanotechnology Engineering
- Abdullah Gül University
- Kayseri
- Turkey
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