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Liu L, Yan Y, Zhao S, Wang T, Zhang W, Zhang J, Hao X, Zhang Y, Zhang X, Wei Z. Stereoisomeric Non-Fullerene Acceptors-Based Organic Solar Cells. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2305638. [PMID: 37699757 DOI: 10.1002/smll.202305638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/20/2023] [Indexed: 09/14/2023]
Abstract
Chiral alkyl chains are ubiquitously observed in organic semiconductor materials and can regulate solution processability and active layer morphology, but the effect of stereoisomers on photovoltaic performance has rarely been investigated. For the racemic Y-type acceptors widely used in organic solar cells, it remains unknown if the individual chiral molecules separate into the conglomerate phase or if racemic phase prevails. Here, the photovoltaic performance of enantiomerically pure Y6 derivatives, (S,S)/(R,R)-BTP-4F, and their chiral mixtures are compared. It is found that (S,S) and (R,R)-BTP-4F molecule in the racemic mixtures tends to interact with its enantiomer. The racemic mixtures enable efficient light harvesting, fast hole transfer, and long polaron lifetime, which is conducive to charge generation and suppresses the recombination losses. Moreover, abundant charge diffusion pathways provided by the racemate contribute to efficient charge transport. As a result, the racemate system maximizes the power output and minimizes losses, leading to a higher efficiency of 18.16% and a reduced energy loss of 0.549 eV, as compared to the enantiomerically pure molecules. This study demonstrates that the chirality of non-fullerene acceptors should receive more attention and be designed rationally to enhance the efficiency of organic solar cells.
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Affiliation(s)
- Lixuan Liu
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, China
- School of Future Technology, University of Chinese Academy of Sciences (UCAS), Beijing, 100049, China
| | - Yangjun Yan
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, China
- School of Science, Beijing Jiaotong University, Beijing, 100044, China
| | - Shengda Zhao
- School of Science, Beijing Jiaotong University, Beijing, 100044, China
| | - Tong Wang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Wenqing Zhang
- School of Physics, State Key Laboratory of Crystal Material, Shandong University, Jinan, 250100, China
| | - Jianqi Zhang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Xiaotao Hao
- School of Physics, State Key Laboratory of Crystal Material, Shandong University, Jinan, 250100, China
| | - Yajie Zhang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Xinghua Zhang
- School of Science, Beijing Jiaotong University, Beijing, 100044, China
| | - Zhixiang Wei
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, China
- School of Future Technology, University of Chinese Academy of Sciences (UCAS), Beijing, 100049, China
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2
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Liu L, Yang Y, Meskers SCJ, Wang Q, Zhang L, Yang C, Zhang J, Zhu L, Zhang Y, Wei Z. Fused-Ring Electron-Acceptor Single Crystals with Chiral 2D Supramolecular Organization for Anisotropic Chiral Optoelectronic Devices. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2304627. [PMID: 37467489 DOI: 10.1002/adma.202304627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Revised: 07/09/2023] [Accepted: 07/17/2023] [Indexed: 07/21/2023]
Abstract
Supramolecular chiral organization gives π-conjugated molecules access to fascinating specific interactions with circularly polarized light (CPL). Such a feature enables the fabrication of high-performance chiral organic electronic devices that detect or emit CPL directly. Herein, it is shown that chiral fused-ring electron-acceptor BTP-4F single-crystal-based phototransistors demonstrate distinguished CPL discrimination capability with current dissymmetry factor exceeding 1.4, one of the highest values among state-of-the-art direct CPL detectors. Theoretical calculations prove that the chirality at the supramolecular level in these enantiomeric single crystals originates from chiral exciton coupling of a unique quasi-2D supramolecular organization consisting of interlaced molecules with opposite helical conformation. Impressively, such supramolecular organization produces a higher dissymmetry factor along the preferred growth direction of the chiral single crystals in comparison to that of the short axis direction. Furthermore, the amplified, inverted, and also anisotropic current dissymmetry compared to optical dissymmetry is studied by finite element simulations. Therefore, a unique chiral supramolecular organization that is responsible for the excellent chiroptical response and anisotropic electronic properties is developed, which not only enables the construction of high-performance CPL detection devices but also allows a better understanding of the structure-property relationships in chiral organic optoelectronics.
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Affiliation(s)
- Lixuan Liu
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, China
- School of Future Technology, University of Chinese Academy of Sciences (UCAS), Beijing, 100049, China
| | - Yang Yang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Stefan C J Meskers
- Molecular Materials and Nanosystems, Institute for Complex Molecular Systems, Eindhoven University of Technology, P. O. box 513, Eindhoven, NL, 5600 MB, The Netherlands
| | - Qingkai Wang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Liting Zhang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Chen Yang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Jianqi Zhang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Lingyun Zhu
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Yajie Zhang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Zhixiang Wei
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, China
- School of Future Technology, University of Chinese Academy of Sciences (UCAS), Beijing, 100049, China
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3
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Albano G, Zinna F, Urraci F, Capozzi MAM, Pescitelli G, Punzi A, Di Bari L, Farinola GM. Aggregation Modes of Chiral Diketopyrrolo[3,4-c]pyrrole Dyes in Solution and Thin Films. Chemistry 2022; 28:e202201178. [PMID: 35674127 PMCID: PMC9545290 DOI: 10.1002/chem.202201178] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Indexed: 11/07/2022]
Abstract
The chiroptical features of chiral diketopyrrolo[3,4-c]pyrrole (DPP) derivatives have been only marginally investigated to date. In this regard, we have synthesized ad hoc four chiral DPP dyes, functionalized with enantiopure alkyl groups from natural sources either on the lactam moieties or on the terminal positions of the π-conjugated backbone, to promote an efficient self-assembly into chiral supramolecular structures. For each of them, the aggregation modes has been investigated by absorbance and ECD spectroscopies in conditions of solution aggregation and on thin films, considering the effects of deposition technique (drop casting vs. spin coating) and post-deposition operations (solvent and thermal annealing). The effect of the structure of lateral π-conjugated units attached to the central DPP scaffold, as well as that of the position of the alkyl chiral group, has been assessed. ECD revealed superior capability, compared to absorbance spectroscopy, to provide information on the aggregation modes and to detect the possible co-existence of multiple aggregation pathways.
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Affiliation(s)
- Gianluigi Albano
- Dipartimento di ChimicaUniversità degli Studi di Bari “Aldo Moro”Via Edoardo Orabona 470126BariItaly
| | - Francesco Zinna
- Dipartimento di Chimica e Chimica IndustrialeUniversità di PisaVia Giuseppe Moruzzi 1356124PisaItaly
| | - Francesco Urraci
- Dipartimento di Chimica e Chimica IndustrialeUniversità di PisaVia Giuseppe Moruzzi 1356124PisaItaly
| | | | - Gennaro Pescitelli
- Dipartimento di Chimica e Chimica IndustrialeUniversità di PisaVia Giuseppe Moruzzi 1356124PisaItaly
| | - Angela Punzi
- Dipartimento di ChimicaUniversità degli Studi di Bari “Aldo Moro”Via Edoardo Orabona 470126BariItaly
| | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica IndustrialeUniversità di PisaVia Giuseppe Moruzzi 1356124PisaItaly
| | - Gianluca M. Farinola
- Dipartimento di ChimicaUniversità degli Studi di Bari “Aldo Moro”Via Edoardo Orabona 470126BariItaly
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4
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Hong Y, Rudolf M, Kim M, Kim J, Schembri T, Krause AM, Shoyama K, Bialas D, Röhr MIS, Joo T, Kim H, Kim D, Würthner F. Steering the multiexciton generation in slip-stacked perylene dye array via exciton coupling. Nat Commun 2022; 13:4488. [PMID: 35918327 PMCID: PMC9345863 DOI: 10.1038/s41467-022-31958-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2022] [Accepted: 07/08/2022] [Indexed: 11/29/2022] Open
Abstract
Dye arrays from dimers up to larger oligomers constitute the functional units of natural light harvesting systems as well as organic photonic and photovoltaic materials. Whilst in the past decades many photophysical studies were devoted to molecular dimers for deriving structure-property relationship to unravel the design principles for ideal optoelectronic materials, they fail to accomplish the subsequent processes of charge carrier generation or the detachment of two triplet species in singlet fission (SF). Here, we present a slip-stacked perylene bisimide trimer, which constitutes a bridge between hitherto studied dimer and solid-state materials, to investigate SF mechanisms. This work showcases multiple pathways towards the multiexciton state through direct or excimer-mediated mechanisms by depending upon interchromophoric interaction. These results suggest the comprehensive role of the exciton coupling, exciton delocalization, and excimer state to facilitate the SF process. In this regard, our observations expand the fundamental understanding the structure-property relationship in dye arrays. Understanding structure-property relationship of dye arrays is of great importance for designing organic photonic and photovoltaic materials. Here, authors present a slip-stacked perylene bisimide array as a model system to investigate singlet fission mechanisms by depending upon interchromophoric interaction.
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Affiliation(s)
- Yongseok Hong
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Maximilian Rudolf
- Universitat Würzburg, Institut für Organische Chemie, Am Hubland, 97074, Würzburg, Germany
| | - Munnyon Kim
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea
| | - Juno Kim
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea
| | - Tim Schembri
- Universität Würzburg, Center for Nanosystems Chemistry, Theodor-Boveri Weg, 97074, Würzburg, Germany
| | - Ana-Maria Krause
- Universität Würzburg, Center for Nanosystems Chemistry, Theodor-Boveri Weg, 97074, Würzburg, Germany
| | - Kazutaka Shoyama
- Universität Würzburg, Center for Nanosystems Chemistry, Theodor-Boveri Weg, 97074, Würzburg, Germany
| | - David Bialas
- Universitat Würzburg, Institut für Organische Chemie, Am Hubland, 97074, Würzburg, Germany
| | - Merle I S Röhr
- Universität Würzburg, Center for Nanosystems Chemistry, Theodor-Boveri Weg, 97074, Würzburg, Germany.
| | - Taiha Joo
- Department of Chemistry, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea.
| | - Hyungjun Kim
- Department of Chemistry and Research Institute of Basic Sciences, Incheon National University, Incheon, 22012, Republic of Korea.
| | - Dongho Kim
- Spectroscopy Laboratory for Functional π-Electronic Systems and Department of Chemistry, Yonsei University, Seoul, 03722, Republic of Korea. .,Division of Energy Materials, Pohang University of Science and Technology (POSTECH), Pohang, 37673, Republic of Korea.
| | - Frank Würthner
- Universitat Würzburg, Institut für Organische Chemie, Am Hubland, 97074, Würzburg, Germany. .,Universität Würzburg, Center for Nanosystems Chemistry, Theodor-Boveri Weg, 97074, Würzburg, Germany.
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5
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Kang SH, Lee D, Choi W, Oh JH, Yang C. Usefulness of Polar and Bulky Phosphonate Chain-End Solubilizing Groups in Polymeric Semiconductors. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02628] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- So-Huei Kang
- Department of Energy Engineering, School of Energy and Chemical Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulju-gun, Ulsan 44919, Republic of Korea
- Department of Chemistry, McGill University, 801 Sherbrooke St West, Montreal, QC H3A 0B8, Canada
| | - Doyoung Lee
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Wonbin Choi
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Joon Hak Oh
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Changduk Yang
- Department of Energy Engineering, School of Energy and Chemical Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulju-gun, Ulsan 44919, Republic of Korea
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6
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Sumitomo K, Sudo Y, Kanazawa K, Kawabata K, Takimiya K. Enantiopure 2-(2-ethylhexyl)dinaphtho[2,3- b:2',3'- f]thieno[3,2- b]thiophenes: synthesis, single-crystal structure and a surprising lack of influence of stereoisomerism on thin-film structure and electronic properties. MATERIALS HORIZONS 2022; 9:444-451. [PMID: 34788783 DOI: 10.1039/d1mh01119g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Starting from a chiral resolution of 2-ethylhexanoic acid followed by conversions of functional groups without interfering with the enantiopurity, we have successfully introduced an enantiopure 2-ethylhexyl group on to dinaphtho[2,3-b:2',3'-f]thieno[3,2-b]thiophene (DNTT) via a Negishi-coupling reaction to synthesize 2-(R)-(2-ethylhexyl)- and 2-(S)-(2-ethylhexyl)-DNTT (R- and S-EH-DNTT, respectively). Then, the crystallinities, thin-film structures, and the organic field-effect transistors (OFETs) based on R-, S- and racemic EH-DNTT (rac-EH-DNTT) were studied to elucidate the effect of stereoisomerism in the 2-ethylhexyl group. The crystal structures of the R- and S-EH-DNTTs are classified as herringbone packing and contain two crystallographically independent molecules connected by edge-to-face CH-π intermolecular interactions, and the molecules' directly opposite directions avoid steric repulsion between the 2-ethylhexyl groups. Thin films of the EH-DNTTs fabricated using both the spin-coating and vacuum-deposition methods were revealed to have similar but slightly different packing structures to that in the single crystal. Intriguingly, the packing structures in the thin-film state depend on the deposition method, and not on the stereoisomers of EH-DNTT. Consistent with the packing structures in the thin-film state, the performance of OFETs based on the thin films of the R-, S- and rac-EH-DNTTs were affected by the deposition method, and not by the stereoisomerism. This means that the stereoisomerism in the alkyl side chain has a marginal effect on the packing structure and electronic properties in the thin-film state. This is endorsed by the theoretical calculations using the functional-group symmetry-adapted perturbation theory (F-SAPT), which indicated that the intermolecular interactions between the DNTT cores are dominant in the total intermolecular interaction energies, and implies that the crystallization process in the thin-film deposition could be governed by intermolecular interactions between the DNTT cores. We conclude that in 2-ethylhexyl-substituted organic semiconductors with a large and highly aggregative π-conjugated core, like EH-DNTT, the enantiopurity in the 2-ethylhexyl group does not significantly affect the thin-film structure and thus the performance of thin-film OFETs.
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Affiliation(s)
- Kenta Sumitomo
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan.
| | - Yuta Sudo
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan.
| | - Kiseki Kanazawa
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan.
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Kohsuke Kawabata
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan.
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Kazuo Takimiya
- Department of Chemistry, Graduate School of Science, Tohoku University, 6-3 Aoba, Aramaki, Aoba-ku, Sendai, Miyagi 980-8578, Japan.
- RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- Advanced Institute for Materials Research, Tohoku University (WPI-AIMR), 2-1-1 Katahira, Aoba-ku, Sendai, Miyagi 980-8577, Japan
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7
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Liu L, Yang Y, Wei Z. Chiral Organic Optoelectronic Materials and Circularly Polarized Light Luminescence and Detection. ACTA CHIMICA SINICA 2022. [DOI: 10.6023/a22030123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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8
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Kang SH, Lee D, Kim H, Choi W, Oh J, Oh JH, Yang C. Effects of the Polarity and Bulkiness of End-Functionalized Side Chains on the Charge Transport of Dicyanovinyl-End-Capped Diketopyrrolopyrrole-Based n-Type Small Molecules. ACS APPLIED MATERIALS & INTERFACES 2021; 13:52840-52849. [PMID: 34704746 DOI: 10.1021/acsami.1c14945] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
When designing organic semiconductors, side-chain engineering is as important as modifying the conjugated backbone, which has a significant impact on molecular ordering, morphology, and thus electronic device performance. We have developed three dicyanovinyl-end-capped donor-acceptor diketopyrrolopyrrole-based n-type small molecules (C2C9CN, SiC4CN, and EH4PCN) bearing an identical length of alkyl spacer yet different end-functionalized side chains (i.e., alkyl-, siloxane-, and phosphonate-end pendants). The effects of the end-functionalized side chains on the intrinsic molecular properties, microstructure, and charge transport of the small-molecule series were investigated. In comparison with the alkyl-end side chains, incorporating siloxane-end side chains into the backbone facilitates 2D edge-on oriented high intergrain connectivity/crystallinity and compatibility with the substrate surface, whereas the phosphonate-end analogues have an adverse effect on the film-forming quality due to high polarity. Thereby, an organic field-effect transistor fabricated by SiC4CN shows the best electron mobility up to 1.59 × 10-1 cm2 V-1 s-1 along with a high current on/off ratio >105. This study contributes to our understanding of the role of the end-functionalized side chains (e.g., the effects of polarity and bulkiness of the end groups) for the development of high-performance semiconductors.
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Affiliation(s)
- So-Huei Kang
- Department of Energy Engineering, School of Energy and Chemical Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulju-gun, Ulsan 44919, Republic of Korea
| | - Doyoung Lee
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826 Republic of Korea
| | - Hyunwook Kim
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826 Republic of Korea
| | - Wonbin Choi
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826 Republic of Korea
| | - Jiyeon Oh
- Department of Energy Engineering, School of Energy and Chemical Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulju-gun, Ulsan 44919, Republic of Korea
| | - Joon Hak Oh
- School of Chemical and Biological Engineering, Institute of Chemical Processes, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826 Republic of Korea
| | - Changduk Yang
- Department of Energy Engineering, School of Energy and Chemical Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulju-gun, Ulsan 44919, Republic of Korea
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9
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Garcia AM, Martínez G, Ruiz-Carretero A. The Importance of Spin State in Chiral Supramolecular Electronics. Front Chem 2021; 9:722727. [PMID: 34422770 PMCID: PMC8371180 DOI: 10.3389/fchem.2021.722727] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2021] [Accepted: 07/21/2021] [Indexed: 11/25/2022] Open
Abstract
The field of spintronics explores how magnetic fields can influence the properties of organic and inorganic materials by controlling their electron’s spins. In this sense, organic materials are very attractive since they have small spin-orbit coupling, allowing long-range spin-coherence over times and distances longer than in conventional metals or semiconductors. Usually, the small spin-orbit coupling means that organic materials cannot be used for spin injection, requiring ferromagnetic electrodes. However, chiral molecules have been demonstrated to behave as spin filters upon light illumination in the phenomenon described as chirality-induced spin selectivity (CISS) effect. This means that electrons of certain spin can go through chiral assemblies of molecules preferentially in one direction depending on their handedness. This is possible because the lack of inversion symmetry in chiral molecules couples with the electron’s spin and its linear momentum so the molecules transmit the one preferred spin. In this respect, chiral semiconductors have great potential in the field of organic electronics since when charge carriers are created, a preferred spin could be transmitted through a determined handedness structure. The exploration of the CISS effect in chiral supramolecular semiconductors could add greatly to the efforts made by the organic electronics community since charge recombination could be diminished and charge transport improved when the spins are preferentially guided in one specific direction. This review outlines the advances in supramolecular chiral semiconductors regarding their spin state and its influence on the final electronic properties.
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Affiliation(s)
- Ana M Garcia
- Institute Charles Sadron, University of Strasbourg, CNRS, Strasbourg, France
| | - Gabriel Martínez
- Institute Charles Sadron, University of Strasbourg, CNRS, Strasbourg, France
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10
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Saes BW, Lutz M, Wienk MM, Meskers SCJ, Janssen RAJ. Tuning the Optical Characteristics of Diketopyrrolopyrrole Molecules in the Solid State by Alkyl Side Chains. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2020; 124:25229-25238. [PMID: 33244323 PMCID: PMC7682139 DOI: 10.1021/acs.jpcc.0c07334] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Revised: 10/25/2020] [Indexed: 06/11/2023]
Abstract
The optical properties of two sets of donor-acceptor-donor molecules with terminal bithiophene donor units and a central diketopyrrolopyrrole (DPP) acceptor unit are studied. The two sets differ in the alkyl chains on the DPP, which are either branched at the α-carbon (3-pentyl) (1-4) or linear (n-hexyl) (5-8). Within each set, the molecules differ by the absence or presence of n-hexyl chains on the terminal thiophene rings in the 3', 4', or 5' positions. While in solution, the optical spectra differ only subtly; they differ dramatically in the solid state. In contrast to 5-8, 1-4 are nonplanar as a consequence of the sterically demanding 3-pentyl groups, which inhibit π-stacking of the DPP units. Using the crystal structures of 2 (brick layer stacking) and 6 (slipped stacking), we quantitatively explain the solid state absorption spectra. By computing the molecular transition charge density and solving the dispersion relation, the optical absorption of the molecules in the crystal is predicted and in agreement with experiments. For 2, a single resonance frequency is obtained, while for 6 two transitions are seen, with the lower-energy transition being less intense. The results demonstrate how subtle changes in substitution exert large effects in optical properties.
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Affiliation(s)
- Bart W.
H. Saes
- Molecular
Materials and Nanosystems & Institute for Complex Molecular Systems, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
| | - Martin Lutz
- Utrecht
University, Crystal and Structural
Chemistry, Bijvoet Centre for Biomolecular Research, Faculty of Science, 3584 CH Utrecht, The Netherlands
| | - Martijn M. Wienk
- Molecular
Materials and Nanosystems & Institute for Complex Molecular Systems, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
| | - Stefan C. J. Meskers
- Molecular
Materials and Nanosystems & Institute for Complex Molecular Systems, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
| | - René A. J. Janssen
- Molecular
Materials and Nanosystems & Institute for Complex Molecular Systems, Eindhoven University of Technology, 5600 MB Eindhoven, The Netherlands
- Dutch
Institute for Fundamental Energy Research, 5612 AJ Eindhoven, The Netherlands
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11
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Rausch R, Röhr MIS, Schmidt D, Krummenacher I, Braunschweig H, Würthner F. Tuning phenoxyl-substituted diketopyrrolopyrroles from quinoidal to biradical ground states through (hetero-)aromatic linkers. Chem Sci 2020; 12:793-802. [PMID: 34163813 PMCID: PMC8179021 DOI: 10.1039/d0sc05475e] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Accepted: 11/10/2020] [Indexed: 12/31/2022] Open
Abstract
Strongly fluorescent halochromic 2,6-di-tert-butyl-phenol-functionalised phenyl-, thienyl- and furyl-substituted diketopyrrolopyrrole (DPP) dyes were deprotonated and oxidised to give either phenylene-linked DPP1˙˙ biradical (y 0 = 0.75) with a singlet open shell ground state and a thermally populated triplet state (ΔE ST = 19 meV; 1.8 kJ mol-1; 0.43 kcal mol-1) or thienylene/furylene-linked DPP2q and DPP3q compounds with closed shell quinoidal ground states. Accordingly, we identified the aromaticity of the conjugated (hetero-)aromatic bridge to be key for modulating the electronic character of these biradicaloid compounds and achieved a spin crossover from closed shell quinones DPP2q and DPP3q to open shell biradical DPP1˙˙ as confirmed by optical and magnetic spectroscopic studies (UV/vis/NIR, NMR, EPR) as well as computational investigations (spin-flip TD-DFT calculations in combination with CASSCF(4,4) and harmonic oscillator model of aromaticity (HOMA) analysis). Spectroelectrochemical studies and comproportionation experiments further prove the reversible formation of mixed-valent radical anions for the DPP2q and DPP3q quinoidal compounds with absorption bands edging into the NIR spectral region.
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Affiliation(s)
- Rodger Rausch
- Universität Würzburg, Institut für Organische Chemie Am Hubland 97074 Würzburg Germany
| | - Merle I S Röhr
- Universität Würzburg, Center for Nanosystems Chemistry (CNC) Theodor-Boveri-Weg 97074 Würzburg Germany
| | - David Schmidt
- Universität Würzburg, Institut für Organische Chemie Am Hubland 97074 Würzburg Germany
- Universität Würzburg, Center for Nanosystems Chemistry (CNC) Theodor-Boveri-Weg 97074 Würzburg Germany
| | - Ivo Krummenacher
- Universität Würzburg, Institut für Anorganische Chemie, Institute for Sustainable Chemistry and Catalysis with Boron Am Hubland 97074 Würzburg Germany
| | - Holger Braunschweig
- Universität Würzburg, Institut für Anorganische Chemie, Institute for Sustainable Chemistry and Catalysis with Boron Am Hubland 97074 Würzburg Germany
| | - Frank Würthner
- Universität Würzburg, Institut für Organische Chemie Am Hubland 97074 Würzburg Germany
- Universität Würzburg, Center for Nanosystems Chemistry (CNC) Theodor-Boveri-Weg 97074 Würzburg Germany
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12
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Song I, Ahn J, Shang X, Oh JH. Optoelectronic Property Modulation in Chiral Organic Semiconductor/Polymer Blends. ACS APPLIED MATERIALS & INTERFACES 2020; 12:49926-49934. [PMID: 33092342 DOI: 10.1021/acsami.0c17211] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Organic phototransistors (OPTs) have been widely used in biomedical sensing, optical communications, and imaging. Charge-trapping effect has been utilized as an effective strategy for enhancing their photoresponsivity by effectively decreasing the dark current. The combination of organic semiconductors (OSCs), especially chiral OSCs, with insulating polymers has rarely been carried out for optoelectronic applications. Here, we fabricated OPTs containing both enantiopure and racemic air-stable n-type perylene diimide derivatives, CPDI-CN2-C6, and insulating biopolymer polylactide (PLA) and evaluated their photoresponsive properties. The PLA-blended systems exhibited greatly enhanced optoelectronic performances owing to the intense charge-trapping effect. Interestingly, the racemic system showed 3 times higher electron mobility and 12 times higher specific detectivity (1.3 × 1013 jones) compared with the enantiopure systems due to the more aggregated morphologies and larger grains, indicating that chiral composition can be used as a tuning parameter in optoelectronic devices. Our systematic study provides a feasible and effective method for producing high-performance n-type OPTs under ambient conditions.
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Affiliation(s)
- Inho Song
- School of Chemical and Biological Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jaeyong Ahn
- School of Chemical and Biological Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Xiaobo Shang
- School of Chemical and Biological Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
- Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, U.K
| | - Joon Hak Oh
- School of Chemical and Biological Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
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13
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Militzer S, Nishimura N, Ávila‐Rovelo NR, Matsuda W, Schwaller D, Mésini PJ, Seki S, Ruiz‐Carretero A. Impact of Chirality on Hydrogen‐Bonded Supramolecular Assemblies and Photoconductivity of Diketopyrrolopyrrole Derivatives. Chemistry 2020; 26:9998-10004. [PMID: 32369228 DOI: 10.1002/chem.202001540] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 04/25/2020] [Indexed: 11/12/2022]
Affiliation(s)
- Swann Militzer
- CNRS, UPR22 University of Strasbourg, Institute Charles Sadron 23 Rue du Loess 67000 Strasbourg Cedex 2 France
| | - Nozomi Nishimura
- Department of Molecular Engineering Graduate School of Engineering Kyoto University Nishikyo-ku Kyoto 615-8510 Japan
| | - Nelson Ricardo Ávila‐Rovelo
- CNRS, UPR22 University of Strasbourg, Institute Charles Sadron 23 Rue du Loess 67000 Strasbourg Cedex 2 France
| | - Wakana Matsuda
- Department of Molecular Engineering Graduate School of Engineering Kyoto University Nishikyo-ku Kyoto 615-8510 Japan
| | - Duncan Schwaller
- CNRS, UPR22 University of Strasbourg, Institute Charles Sadron 23 Rue du Loess 67000 Strasbourg Cedex 2 France
| | - Philippe J. Mésini
- CNRS, UPR22 University of Strasbourg, Institute Charles Sadron 23 Rue du Loess 67000 Strasbourg Cedex 2 France
| | - Shu Seki
- Department of Molecular Engineering Graduate School of Engineering Kyoto University Nishikyo-ku Kyoto 615-8510 Japan
| | - Amparo Ruiz‐Carretero
- CNRS, UPR22 University of Strasbourg, Institute Charles Sadron 23 Rue du Loess 67000 Strasbourg Cedex 2 France
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14
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Zhang H, Cheng J, Zhou Q, Zhang Q, Zou G. Impact of a chiral supramolecular nanostructure on the mechanical and electrical performances of triphenylene-based discotic physical gels. SOFT MATTER 2020; 16:5203-5209. [PMID: 32428056 DOI: 10.1039/d0sm00152j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Discotic π-conjugated supramolecular assemblies, especially with chiral supramolecular nanostructures, have been attracting growing research interest due to their significant optoelectronic properties and the possibilities of their applications in the new generation of organic semiconductors. However, the impact of supramolecular chirality on their mechanical and electrical performances remains poorly understood. Herein, a series of optically active supramolecular gels were formed from achiral triphenylene derivatives by introducing limonene as the chiral source. Owing to the well-ordered supramolecular packing, the homochiral supramolecular gels exhibited greater mechanical strength and higher conductivity, compared to heterochiral architectures. The impact of supramolecular packing in homochiral or heterochiral assemblies on their resulting mechanical and electrical performances was investigated in detail, which might be of great fundamental value for the rational design of chiral π-conjugated supramolecular nanostructures for applications in chiral optoelectronics.
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Affiliation(s)
- Hongli Zhang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, iChEM, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
| | - Junjie Cheng
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, iChEM, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
| | - Qiang Zhou
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, iChEM, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
| | - Qijin Zhang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, iChEM, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
| | - Gang Zou
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, iChEM, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China.
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15
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Schweicher G, Garbay G, Jouclas R, Vibert F, Devaux F, Geerts YH. Molecular Semiconductors for Logic Operations: Dead-End or Bright Future? ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1905909. [PMID: 31965662 DOI: 10.1002/adma.201905909] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2019] [Revised: 11/18/2019] [Indexed: 05/26/2023]
Abstract
The field of organic electronics has been prolific in the last couple of years, leading to the design and synthesis of several molecular semiconductors presenting a mobility in excess of 10 cm2 V-1 s-1 . However, it is also started to recently falter, as a result of doubtful mobility extractions and reduced industrial interest. This critical review addresses the community of chemists and materials scientists to share with it a critical analysis of the best performing molecular semiconductors and of the inherent charge transport physics that takes place in them. The goal is to inspire chemists and materials scientists and to give them hope that the field of molecular semiconductors for logic operations is not engaged into a dead end. To the contrary, it offers plenty of research opportunities in materials chemistry.
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Affiliation(s)
- Guillaume Schweicher
- Laboratoire de chimie des polymères, Faculté des Sciences, Université Libre de Bruxelles (ULB) Boulevard du Triomphe, Brussels, 1050, Belgium
- Optoelectronics Group, Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, UK
| | - Guillaume Garbay
- Laboratoire de chimie des polymères, Faculté des Sciences, Université Libre de Bruxelles (ULB) Boulevard du Triomphe, Brussels, 1050, Belgium
| | - Rémy Jouclas
- Laboratoire de chimie des polymères, Faculté des Sciences, Université Libre de Bruxelles (ULB) Boulevard du Triomphe, Brussels, 1050, Belgium
| | - François Vibert
- Laboratoire de chimie des polymères, Faculté des Sciences, Université Libre de Bruxelles (ULB) Boulevard du Triomphe, Brussels, 1050, Belgium
| | - Félix Devaux
- Laboratoire de chimie des polymères, Faculté des Sciences, Université Libre de Bruxelles (ULB) Boulevard du Triomphe, Brussels, 1050, Belgium
| | - Yves H Geerts
- Laboratoire de chimie des polymères, Faculté des Sciences, Université Libre de Bruxelles (ULB) Boulevard du Triomphe, Brussels, 1050, Belgium
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16
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Inoue S, Higashino T, Arai S, Kumai R, Matsui H, Tsuzuki S, Horiuchi S, Hasegawa T. Regioisomeric control of layered crystallinity in solution-processable organic semiconductors. Chem Sci 2020; 11:12493-12505. [PMID: 34976335 PMCID: PMC8647348 DOI: 10.1039/d0sc04461j] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Accepted: 10/16/2020] [Indexed: 11/21/2022] Open
Abstract
The construction and control of 2D layered molecular packing motifs with functionally substituted π-electron cores are crucial for developing organic electronic materials and devices. We investigated a regioisomeric structure–property relationship in high-performance and solution-processable layered organic semiconductors based on mono-octyl-substituted benzothieno[3,2-b]naphtho[2,3-b]thiophene (mono-C8-BTNT). We demonstrated that an isomorphous bilayer-type layered herringbone packing motif is obtainable in a series of four positional isomers of mono-C8-BTNTs whose π-electron core is substituted by an octyl chain at one of the four most peripheral positions with roughly keeping the rod-like molecular shape. These regioisomeric compounds exhibited systematic variations in the solvent solubility and liquid-crystalline phase transitions at elevated temperatures. The analysis of intermolecular interaction energies in the crystals based on dispersion-corrected DFT calculations revealed that the crystals of 2- and 8-mono-C8-BTNTs are more stable than those of 3- and 9-mono-C8-BTNTs owing to the higher ordering of alkyl chain layers in the crystals. Such differences of the stability in their crystal formation are closely correlated with TFT performances, where the single-crystal devices of the 2- and 8-mono-C8-BTNTs substituted at the most peripheral positions exhibit high-performance TFT characteristics with a mobility of approximately 10 cm2 V−1 s−1. An isomorphous bilayer-type layered herringbone crystal packing is reported for a series of four positional isomers of mono-C8-BTNTs, where the single-crystal devices with the isomers exhibit high-performance TFT characteristics.![]()
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Affiliation(s)
- Satoru Inoue
- Department of Applied Physics, The University of Tokyo, 7-3-1 Hongo, Tokyo 113 8656, Japan
| | - Toshiki Higashino
- Research Institute for Advanced Electronics and Photonics (RIAEP), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
| | - Shunto Arai
- Department of Applied Physics, The University of Tokyo, 7-3-1 Hongo, Tokyo 113 8656, Japan
| | - Reiji Kumai
- Condensed Matter Research Centre (CMRC) and Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), Tsukuba, Ibaraki 305-0801, Japan
| | - Hiroyuki Matsui
- Research Center for Organic Electronics, Yamagata University, Yonezawa, Yamagata 992-8510, Japan
| | - Seiji Tsuzuki
- Research Center for Computational Design of Advanced Functional Materials (CD-FMat), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8568, Japan
| | - Sachio Horiuchi
- Research Institute for Advanced Electronics and Photonics (RIAEP), National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305-8565, Japan
| | - Tatsuo Hasegawa
- Department of Applied Physics, The University of Tokyo, 7-3-1 Hongo, Tokyo 113 8656, Japan
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17
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Liu Q, Bottle SE, Sonar P. Developments of Diketopyrrolopyrrole-Dye-Based Organic Semiconductors for a Wide Range of Applications in Electronics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e1903882. [PMID: 31797456 DOI: 10.1002/adma.201903882] [Citation(s) in RCA: 104] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 09/07/2019] [Indexed: 06/10/2023]
Abstract
In recent times, fused aromatic diketopyrrolopyrrole (DPP)-based functional semiconductors have attracted considerable attention in the developing field of organic electronics. Over the past few years, DPP-based semiconductors have demonstrated remarkable improvements in the performance of both organic field-effect transistor (OFET) and organic photovoltaic (OPV) devices due to the favorable features of the DPP unit, such as excellent planarity and better electron-withdrawing ability. Driven by this success, DPP-based materials are now being exploited in various other electronic devices including complementary circuits, memory devices, chemical sensors, photodetectors, perovskite solar cells, organic light-emitting diodes, and more. Recent developments in the use of DPP-based materials for a wide range of electronic devices are summarized, focusing on OFET, OPV, and newly developed devices with a discussion of device performance in terms of molecular engineering. Useful guidance for the design of future DPP-based materials and the exploration of more advanced applications is provided.
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Affiliation(s)
- Qian Liu
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD, 4000, Australia
| | - Steven E Bottle
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD, 4000, Australia
| | - Prashant Sonar
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD, 4000, Australia
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18
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Gońka E, Yang L, Steinbock R, Pesciaioli F, Kuniyil R, Ackermann L. π-Extended Polyaromatic Hydrocarbons by Sustainable Alkyne Annulations through Double C-H/N-H Activation. Chemistry 2019; 25:16246-16250. [PMID: 31820511 PMCID: PMC6973059 DOI: 10.1002/chem.201905023] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Indexed: 12/12/2022]
Abstract
The widespread applications of substituted diketopyrrolopyrroles (DPPs) call for the development of efficient methods for their modular assembly. Herein, we present a π-expansion strategy for polyaromatic hydrocarbons (PAHs) by C-H activation in a sustainable fashion. Thus, twofold C-H/N-H activations were accomplished by versatile ruthenium(II)carboxylate catalysis, providing step-economical access to diversely decorated fluorogenic DPPs that was merged with late-stage palladium-catalyzed C-H arylation on the thus-assembled DPP motif.
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Affiliation(s)
- Elżbieta Gońka
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstraße 237077GöttingenGermany
| | - Long Yang
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstraße 237077GöttingenGermany
| | - Ralf Steinbock
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstraße 237077GöttingenGermany
| | - Fabio Pesciaioli
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstraße 237077GöttingenGermany
| | - Rositha Kuniyil
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstraße 237077GöttingenGermany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare ChemieGeorg-August-Universität GöttingenTammannstraße 237077GöttingenGermany
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19
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Chen M, Jiao X, Li J, Wu W, Xin H, McNeill CR, Gao X. From Homochiral Assembly to Heterochiral Assembly: A Leap in Charge Transport Properties of Binaphthol-Based Axially Chiral Materials. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:6188-6195. [PMID: 30977665 DOI: 10.1021/acs.langmuir.9b00463] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Chirality, as a fundamental symmetry property, plays an important role in molecular assembly in the solid state, impacting upon the properties and performance of organic materials. Here, heterochiral assembly was observed upon a binaphthol-based axially chiral material in the thin film state, where the heterochiral assemblies of racemic mixtures exhibit superior crystallization behavior and film morphologies than their homochiral counterparts. Additionally, a dramatic increase (nearly 2 orders of magnitudes) in electronic mobility was obtained upon switching the active layers of organic thin-film transistors from homochiral assemblies to heterochiral assemblies. This work not only gives insights into the structure-aggregation property relationships of axially chiral self-assemblies but also offers new opportunities for novel organic soft materials.
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Affiliation(s)
- Ming Chen
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences , Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
| | - Xuechen Jiao
- Department of Materials Science and Engineering , Monash University , Clayton , Victoria 3800 , Australia
- Australian Synchrotron, ANSTO , Clayton , Victoria 3168 , Australia
| | - Jing Li
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences , Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
| | - Wenting Wu
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences , Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
| | - Hanshen Xin
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences , Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
| | - Christopher R McNeill
- Department of Materials Science and Engineering , Monash University , Clayton , Victoria 3800 , Australia
| | - Xike Gao
- Key Laboratory of Synthetic and Self-Assembly Chemistry for Organic Functional Molecules, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences , Chinese Academy of Sciences , 345 Lingling Road , Shanghai 200032 , China
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20
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Wang X, Jiang B, Du C, Ren X, Duan Z, Wang H. Fluorinated dithienyl-diketopyrrolopyrrole: a new building block for organic optoelectronic materials. NEW J CHEM 2019. [DOI: 10.1039/c9nj04060a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The synthesis of monofluorinated and difluorinated dithienyl-DPP was reported using a stepwise synthesis method starting from the preparation of pyrrolinone followed by condensation with methyl thiophene-2-carbimidate derivatives.
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Affiliation(s)
- Xiaohua Wang
- Department of Chemistry
- College of Science, and Center for Supramolecular Chemistry & Catalysis
- Shanghai University
- Shanghai
- P. R. China
| | - Bin Jiang
- Department of Chemistry
- College of Science, and Center for Supramolecular Chemistry & Catalysis
- Shanghai University
- Shanghai
- P. R. China
| | - Chenchen Du
- Department of Chemistry
- College of Science, and Center for Supramolecular Chemistry & Catalysis
- Shanghai University
- Shanghai
- P. R. China
| | - Xiaolei Ren
- Department of Chemistry
- College of Science, and Center for Supramolecular Chemistry & Catalysis
- Shanghai University
- Shanghai
- P. R. China
| | - Zhiming Duan
- Department of Chemistry
- College of Science, and Center for Supramolecular Chemistry & Catalysis
- Shanghai University
- Shanghai
- P. R. China
| | - Hongyu Wang
- Department of Chemistry
- College of Science, and Center for Supramolecular Chemistry & Catalysis
- Shanghai University
- Shanghai
- P. R. China
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21
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Li H, Brédas JL. Quasi-One-Dimensional Charge Transport Can Lead to Nonlinear Current Characteristics in Organic Field-Effect Transistors. J Phys Chem Lett 2018; 9:6550-6555. [PMID: 30380867 DOI: 10.1021/acs.jpclett.8b02972] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Nonlinearity in the current characteristics of organic field-effect transistor (OFET) devices has become a serious issue for accurate evaluation of the charge-carrier mobilities in organic semiconductors. In particular, in the case of several high-mobility materials, a kink appears in the transfer curves, and this nonlinearity has been generally interpreted as the result of poor contacts. Here, we describe another possible origin for the appearance of such a kink. Extensive molecular-scale device simulations indeed demonstrate that the quasi-1D nature of charge transport often encountered in organic crystals or highly oriented polymers can lead to significant transport through the bulk and result in nonlinearity of the transfer current characteristics if the actual charge injection is away from the channel. When this is the case, the low-gate voltage regime in fact does not overestimate the charge mobility along the channel direction.
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Affiliation(s)
- Haoyuan Li
- School of Chemistry and Biochemistry, Center for Organic Photonics and Electronics (COPE) , Georgia Institute of Technology , Atlanta , Georgia 30332-0400 , United States
| | - Jean-Luc Brédas
- School of Chemistry and Biochemistry, Center for Organic Photonics and Electronics (COPE) , Georgia Institute of Technology , Atlanta , Georgia 30332-0400 , United States
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