1
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Xiong H, Lin Q, Lu Y, Zheng D, Li Y, Wang S, Xie W, Li C, Zhang X, Lin Y, Wang ZX, Shi Q, Marks TJ, Huang H. General room-temperature Suzuki-Miyaura polymerization for organic electronics. NATURE MATERIALS 2024; 23:695-702. [PMID: 38287128 DOI: 10.1038/s41563-023-01794-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Accepted: 12/21/2023] [Indexed: 01/31/2024]
Abstract
π-Conjugated polymers (CPs) have broad applications in high-performance optoelectronics, energy storage, sensors and biomedicine. However, developing green and efficient methods to precisely synthesize alternating CP structures on a large scale remains challenging and critical for their industrialization. Here a room-temperature, scalable and homogeneous Suzuki-Miyaura-type polymerization reaction is developed with broad generality validated for 24 CPs including donor-donor, donor-acceptor and acceptor-acceptor connectivities, yielding device-quality polymers with high molecular masses. Furthermore, the polymerization protocol significantly reduces homocoupling structural defects, yielding more structurally regular and higher-performance electronic materials and optoelectronic devices than conventional thermally activated polymerizations. Experimental and theoretical studies reveal that a borate transmetalation process plays a key role in suppressing protodeboronation, which is critical for large-scale structural regularity. Thus, these results provide a general polymerization tool for the scalable production of device-quality CPs with alternating structural regularity.
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Affiliation(s)
- Haigen Xiong
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, People's Republic of China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Qijie Lin
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Yu Lu
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Ding Zheng
- Department of Chemistry and the Materials Research Center, Northwestern University, Evanston, IL, USA
| | - Yawen Li
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, People's Republic of China
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Song Wang
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Wenbin Xie
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Congqi Li
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Xin Zhang
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Yuze Lin
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, People's Republic of China
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Zhi-Xiang Wang
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, People's Republic of China
| | - Qinqin Shi
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, People's Republic of China.
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, People's Republic of China.
| | - Tobin J Marks
- Department of Chemistry and the Materials Research Center, Northwestern University, Evanston, IL, USA.
| | - Hui Huang
- College of Materials Science and Opto-Electronic Technology, University of Chinese Academy of Sciences, Beijing, People's Republic of China.
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing, People's Republic of China.
- CAS Center for Excellence in Topological Quantum Computation, University of Chinese Academy of Sciences, Beijing, People's Republic of China.
- CAS Key Laboratory of Vacuum Physics, University of Chinese Academy of Sciences, Beijing, People's Republic of China.
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2
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Shen ZQ, Zhang G, Yang K, Zhang YJ, Gong H, Liao G, Liu SY. Direct C-H Arylation Derived Ternary D-A Conjugated Polymers: Effects of Monomer Geometries, D/A Ratios, and Alkyl Side Chains on Photocatalytic Hydrogen Production and Pollutant Degradation. Macromol Rapid Commun 2024; 45:e2300566. [PMID: 37931779 DOI: 10.1002/marc.202300566] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/23/2023] [Indexed: 11/08/2023]
Abstract
Donor-acceptor (D-A) conjugated polymer (CP) featuring high charge mobility and widely tunable energy bands have shown promising prospects in photocatalysis. In this work, a library of ternary D-A CPs (22 polymers) based on benzothiadiazole, bithiophene, and fluorene derivatives (i.e., fluorene [Fl], 9,9-dihexylfluorene [HF], and 9,9'-spirobifluorene [SF]) with and without alkyl side chains, and with 3D geometry are designed and synthesized via atom-economical direct C-H arylation polymerization to explore the synergetic effects of stereochemistry, D/A ratio, and alkyl chains on the properties and photocatalytic performances, which reveal that 1) the cross-shaped 3D spirobifluorene (SF) building block shows the highest hydrogen evolution rates (HER) owing to the sufficient photocatalytic active sites exposed, 2) the alkyl-free linear polymer (FlBtBT0.05 ) exhibit the highest photocatalytic pollutant degradation performance owing to its superior charge separation, and 3) the alkyl side chains are redundances that will exert detrimental effects on the aqueous photocatalysis owing to their insulating and hydrophobic property. The structure-property-performance correlation results obtained will provide a desirable guideline for the rational design of CP-based photocatalysts.
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Affiliation(s)
- Zhao-Qi Shen
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, Department of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China
| | - Guang Zhang
- Department of Chemistry, Tianjin University, Tianjin, 300072, China
| | - Kai Yang
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, Department of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China
| | - Yu-Jie Zhang
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, Department of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China
| | - Hao Gong
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, Department of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China
| | - Guangfu Liao
- National Forestry and Grassland Administration Key Laboratory of Plant Fiber Functional Materials, College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
| | - Shi-Yong Liu
- Jiangxi Provincial Key Laboratory of Functional Molecular Materials Chemistry, Department of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, China
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3
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Wang P, Xu C, Zhang X, Shi Y, Wang C, Han Y, Deng Y, Geng Y. Thienoisoindigo-Based Conjugated Polymers Synthesized by Direct Arylation Polycondensation. Macromol Rapid Commun 2024; 45:e2300245. [PMID: 37278130 DOI: 10.1002/marc.202300245] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Revised: 05/25/2023] [Indexed: 06/07/2023]
Abstract
A series of thienoisoindigo (TIG)-based conjugated polymers (CPs) with high molecular weights are synthesized by direct arylation polycondensation (DArP) by using TIG derivatives as CBr monomer and multi-halogenated thiophene derivatives, i.e., (E)-1,2-bis(3,4-difluorothien-2-yl)ethene (4FTVT), (E)-1,2-bis(3,4-dichlorothien-2-yl)ethene (4ClTVT), 3,3',4,4'-tetrafluoro-2,2'-bithiophene (4FBT), and 3,3',4,4'-tetrachloro-2,2'-bithiophene (4ClBT), as CH monomers. Density functional theory (DFT) calculations reveal the high selectivity between α-CH bonds in 4FTVT, 4ClTVT, 4FBT, and 4ClBT and β-CH bonds in TIG CBr monomer. All four resulting CPs exhibit low optical bandgaps of ca. 1.20 eV and ambipolar transport characteristics with both electron and hole mobility above 0.1 cm2 V-1 s-1 as elaborated with organic thin-film transistors (OTFTs). The polymer TIG-4FTVT delivers the best device performance. With this polymer, n-channel OTFTs with electron mobility up to 1.67 cm2 V-1 s-1 and p-channel OTFTs with hole mobility up to 0.62 cm2 V-1 s-1 are fabricated by modifying source/drain electrodes with polyethylenimine ethoxylated (PEIE) and MoO3 , respectively, to selectively inject electrons and holes.
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Affiliation(s)
- Pai Wang
- School of Materials Science and Engineering and Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, P. R. China
| | - Chenhui Xu
- School of Materials Science and Engineering and Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, P. R. China
| | - Xuwen Zhang
- School of Materials Science and Engineering and Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, P. R. China
| | - Yibo Shi
- School of Materials Science and Engineering and Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, P. R. China
| | - Cheng Wang
- School of Materials Science and Engineering and Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, P. R. China
| | - Yang Han
- School of Materials Science and Engineering and Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, P. R. China
| | - Yunfeng Deng
- School of Materials Science and Engineering and Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, P. R. China
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, P. R. China
| | - Yanhou Geng
- School of Materials Science and Engineering and Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin, 300072, P. R. China
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou, 350207, P. R. China
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4
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Vogt A, Stümpges F, Bajrami J, Baumgarten D, Millan J, Mena-Osteritz E, Bäuerle P. Tunable Regioselectivity in C-H-Activated Direct Arylation Reactions of Dithieno[3,2-b:2',3'-d]pyrroles. Chemistry 2023; 29:e202301867. [PMID: 37667450 DOI: 10.1002/chem.202301867] [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: 06/12/2023] [Indexed: 09/06/2023]
Abstract
In this study, regioselectively controlled direct arylation of dithieno[3,2-b:2,3'-d]pyrroles (DTPs) is reported. By carefully selecting the catalytic system, Pd source, ligand, and additives, we achieved either selective N-arylation or unprecedented β-arylation and β,β'-diarylation of the DTP core through C-H activation when reacting unsubstituted H-DTP with 9-anthracenyl halides. For N-substituted DTPs, we obtained regioselective carboxylate-assisted arylation of the α-position(s). Consequently, depending on the catalytic system and substitution at the DTP nitrogen, we successfully synthesized novel regioselectively substituted DTPs, including N-aryl, rarely reported β-aryl, β,β'-diaryl, α-aryl, and α,α'-diaryl scaffolds. These compounds can be straightforwardly prepared and further functionalized for applications as organic electronic materials.
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Affiliation(s)
- Astrid Vogt
- Institute of Organic Chemistry II and Advanced Materials, University of Ulm, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Florian Stümpges
- Institute of Organic Chemistry II and Advanced Materials, University of Ulm, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Jessi Bajrami
- Institute of Organic Chemistry II and Advanced Materials, University of Ulm, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Daniel Baumgarten
- Institute of Organic Chemistry II and Advanced Materials, University of Ulm, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Judith Millan
- Dpto. de Química - Facultad de Ciencia y Tecnología, Universidad de La Rioja, Madre de Dios 53, 26006, Logroño-La Rioja, España
| | - Elena Mena-Osteritz
- Institute of Organic Chemistry II and Advanced Materials, University of Ulm, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Peter Bäuerle
- Institute of Organic Chemistry II and Advanced Materials, University of Ulm, Albert-Einstein-Allee 11, 89081, Ulm, Germany
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5
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Sangachin MH, Brassard S, Leclerc M. Direct Heteroarylation Guidelines for Well-Defined Thiophene-Based Conjugated Molecules. J Org Chem 2023. [PMID: 36758239 DOI: 10.1021/acs.joc.2c02642] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
Direct (hetero)arylation polymerization (DHAP) shows great promise for simple, low cost, and benign preparation of conjugated polymers. However, coupling selectivity has always posed a problem. Herein, direct (hetero)arylation was studied on small molecule models to develop suitable conditions for C-C couplings between 2-methylthiophene acting as an electron-donating moiety and 2-thiophenecarbonitrile acting as an electron-withdrawing moiety, when one of the partners is brominated. We observed that the best conditions are obtained when the electron-withdrawing moiety is halogenated.
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Affiliation(s)
| | - Samuel Brassard
- Université Laval, Département de Chimie, Québec City G1V 0A6, Canada
| | - Mario Leclerc
- Université Laval, Département de Chimie, Québec City G1V 0A6, Canada
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6
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Brassard S, Sangachin MH, Leclerc M. Toward Defect Suppression in Polythiophenes Synthesized by Direct (Hetero)Arylation Polymerization. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c02248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Affiliation(s)
- Samuel Brassard
- Département de Chimie, Université Laval, Quebec City G1V 0A6, Quebec, Canada
| | | | - Mario Leclerc
- Département de Chimie, Université Laval, Quebec City G1V 0A6, Quebec, Canada
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7
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Zhang X, Shi Y, Dang Y, Liang Z, Wang Z, Deng Y, Han Y, Hu W, Geng Y. Direct Arylation Polycondensation of β-Fluorinated Bithiophenes to Polythiophenes: Effect of Side Chains in C–Br Monomers. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xuwen Zhang
- School of Materials Science and Engineering and Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Yibo Shi
- School of Materials Science and Engineering and Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Yanfeng Dang
- Department of Chemistry and Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Ziqi Liang
- School of Materials Science and Engineering and Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Zhongli Wang
- School of Materials Science and Engineering and Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Yunfeng Deng
- School of Materials Science and Engineering and Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China
| | - Yang Han
- School of Materials Science and Engineering and Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
| | - Wenping Hu
- Department of Chemistry and Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China
| | - Yanhou Geng
- School of Materials Science and Engineering and Tianjin Key Laboratory of Molecular Optoelectronic Science, Tianjin University and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300072, China
- Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University, Binhai New City, Fuzhou 350207, China
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8
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Jang SY, Kim IB, Kim Y, Lim DH, Kang H, Heeney M, Kim DY. Facile direct C-H arylation polymerization of conjugated polymer, PDCBT, for organic solar cells. Macromol Rapid Commun 2022; 43:e2200405. [PMID: 35938972 DOI: 10.1002/marc.202200405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 07/25/2022] [Indexed: 11/09/2022]
Abstract
Direct arylation polymerization (DArP) is a synthetic method for conjugated polymers; in DArP, organometallic functionalization steps are omitted and there are no toxic byproducts. As a result, it is considered a more sustainable alternative compared to conventional methods such as Stille polymerization. To explore the possibility of DArP-based polymers as donor materials in organic solar cells (OSCs), a series of conjugated polymers based on the structure of PDCBT are synthesized using DArP and Stille polymerization. By controlling the monomer concentration and reaction time in DArP, DArP-5 with the highest Mn (21.9 kDa) can be obtained and its optoelectronic properties, electrochemical properties, and microscopic molecular ordering are comparable to those of Stille-based PDCBT (Stille-P). Analysis of the polymer structure indicates no structural defects such as crosslinking from undesired β-coupling reactions in DArP-5. Upon blending with the PC71 BM acceptor molecule, an increase in the crystallite size of DArP-5 is also observed. In OSC devices with a polymer:PC71 BM bulk-heterojunction photoactive layer, DArP-5 demonstrates a comparable power conversion efficiency of 5.8% with that of Stille-P (5.5%). These results prove that DArP is suitable for synthesizing PDCBT, and DArP-based PDCBT can be used in OSCs as an alternative of Stille-based one. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Soo-Young Jang
- Research Institute for Solar and Sustainable Energies, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - In-Bok Kim
- Research Institute for Solar and Sustainable Energies, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Yunseul Kim
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Dae-Hee Lim
- Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI), 29 Geumgu-gil, Jeongeup, 56212, Republic of Korea
| | - Hongkyu Kang
- Center for Research Innovation, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Martin Heeney
- Department of Chemistry and Centre for Processable Electronics, Imperial College London, Molecular Sciences Research Hub, (White City Campus), 80 Wood Lane Shepherd's Bush, London, W12 0BZ, UK
| | - Dong-Yu Kim
- School of Materials Science and Engineering, Research Institute for Solar and Sustainable Energies, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
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9
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Mayhugh AL, Yadav P, Luscombe CK. Circular Discovery in Small Molecule and Conjugated Polymer Synthetic Methodology. J Am Chem Soc 2022; 144:6123-6135. [PMID: 35380440 PMCID: PMC9011355 DOI: 10.1021/jacs.1c12455] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2021] [Indexed: 12/20/2022]
Abstract
Simple and efficient methods are a key consideration for small molecule and polymer syntheses. Direct arylation polymerization (DArP) is of increasing interest for preparing conjugated polymers as an effective approach compared to conventional cross-coupling polymerizations. As DArP sees broader utilization, advancements are needed to access materials with improved properties and different monomer structures and to improve the scalability of conjugated polymer synthesis. Presented herein are considerations for developing new methods of conjugated polymer synthesis from small molecule transformations, exploring how DArP has successfully used this approach, and presenting how emerging polymerization methodologies are developing similarly. While it is common to adapt small molecule methods to polymerizations, we demonstrate the ways in which information gained from studying polymerizations can inform and inspire greater advancements in small molecule transformations. This circular approach to organic synthetic method development underlines the value of collaboration between small molecule and polymer-based synthetic research groups.
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Affiliation(s)
- Amy L. Mayhugh
- Department
of Chemistry, University of Washington, Seattle, Washington 98195, Unites States
| | - Preeti Yadav
- pi-Conjugated
Polymers Unit, Okinawa Institute of Science
and Technology Graduate University, 1919-1, Tancha, Onna-son, Kunigami-gun, Okinawa 904-0495, Japan
| | - Christine K. Luscombe
- pi-Conjugated
Polymers Unit, Okinawa Institute of Science
and Technology Graduate University, 1919-1, Tancha, Onna-son, Kunigami-gun, Okinawa 904-0495, Japan
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10
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Xing L, Liu JR, Hong X, Houk KN, Luscombe CK. An Exception to the Carothers Equation Caused by the Accelerated Chain Extension in a Pd/Ag Cocatalyzed Cross Dehydrogenative Coupling Polymerization. J Am Chem Soc 2022; 144:2311-2322. [PMID: 35100507 DOI: 10.1021/jacs.1c12599] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The Carothers equation is often used to predict the utility of a small molecule reaction in a polymerization. In this study, we present the mechanistic study of Pd/Ag cocatalyzed cross dehydrogenative coupling (CDC) polymerization to synthesize a donor-acceptor (D-A) polymer of 3,3'-dihexyl-2,2'-bithiophene and 2,2',3,3',5,5',6,6'-octafluorobiphenyl, which go counter to the Carothers equation. It is uncovered that the second chain extension cross-coupling proceeds much more efficiently than the first cross-coupling and the homocoupling side reaction (at least 1 order of magnitude faster) leading to unexpectedly low homocoupling defects and high molecular weight polymers. Kinetic analyses show that C-H bond activation is rate-determining in the first cross-coupling but not in the second cross-coupling. Based on DFT calculations, the high cross-coupling rate in the second cross-coupling was ascribed to the strong Pd-thiophene interaction in the Pd-mediated C-H bond activation transition state, which decreases the energy barrier of the Pd-mediated C-H bond activation. These results have implications beyond polymerizations and can be used to ease the synthesis of a wide range of molecules where C-H bond activation may be the limiting factor.
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Affiliation(s)
- Liwen Xing
- Molecular Engineering & Sciences Institute, University of Washington, Seattle, Washington 98195, United States
| | - Ji-Ren Liu
- Center of Chemistry for Frontier Technologies, Department of Chemistry, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China.,Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China
| | - Xin Hong
- Center of Chemistry for Frontier Technologies, Department of Chemistry, State Key Laboratory of Clean Energy Utilization, Zhejiang University, Hangzhou 310027, China.,Key Laboratory of Precise Synthesis of Functional Molecules of Zhejiang Province, School of Science, Westlake University, 18 Shilongshan Road, Hangzhou 310024, Zhejiang Province, China
| | - Kendall N Houk
- Department of Chemical and Biomolecular Engineering and Department of Chemistry and Biochemistry, University of California Los Angeles, Los Angeles, California 90095, United States
| | - Christine K Luscombe
- Molecular Engineering & Sciences Institute, University of Washington, Seattle, Washington 98195, United States.,Material Science & Engineering Department, University of Washington, Seattle, Washington 98195, United States.,Department of Chemistry, University of Washington, Seattle, Washington 98195, United States
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11
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Takagi K, Maeda A, Tsunekawa R. Palladium-Catalyzed intramolecular direct arylation of aromatic tertiary amide compounds revisited. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2022.100432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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12
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Langlois A, St Onge PBJ, Karsenti PL, Younus A, Rondeau-Gagné S. Modulating the Photophysical Properties and Electron Transfer Rates in Diketopyrrolopyrrole-Based Coordination Polymers. J Phys Chem B 2021; 125:9579-9587. [PMID: 34402620 DOI: 10.1021/acs.jpcb.1c03177] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Molecular self-assembly through noncovalent interactions is a particularly efficient approach to fine-tune the optoelectronic and photophysical properties of electroactive materials. In metal-ligand coordination polymers, the final properties of the assemblies are directly related to the nature of the metal-ligand interaction. To probe for such influence on the photophysical properties of electroactive materials, a series of coordination polymers based on a well-known organic dye, diketopyrrolopyrrole, was prepared through coordination of a terpyridine-containing monomer with various metal sources, including iron, cobalt, zinc, and manganese. The resulting supramolecular polymers were characterized through multiple techniques, including UV-vis and fluorescence spectroscopy, time-correlated single-photon counting, and femtosecond transient absorption spectroscopy to reveal the impact of the metal source on the final photophysical properties of coordination polymers. As expected, important variations were found between different coordination polymers in terms of absorption, fluorescence kinetics, and electron transfer rate. While iron and cobalt-containing polymers showed ultrafast electrons transfer rates, assemblies from manganese were shown to be much less efficient, confirming the importance of metal centers. This detailed fundamental study unravels some important relationships between metal-ligand interactions, supramolecular self-assembly, and photophysical properties, ultimately leading to new avenues for the design of functional polymers based on organic dyes.
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Affiliation(s)
- Adam Langlois
- Department of Chemistry and Biochemistry, Advanced Materials Centre of Research (AMCORe), University of Windsor, 401 Sunset Avenue, Windsor, Ontario, Canada N9B 3P4
| | - P Blake J St Onge
- Department of Chemistry and Biochemistry, Advanced Materials Centre of Research (AMCORe), University of Windsor, 401 Sunset Avenue, Windsor, Ontario, Canada N9B 3P4
| | | | - Aneeta Younus
- Department of Chemistry and Biochemistry, Advanced Materials Centre of Research (AMCORe), University of Windsor, 401 Sunset Avenue, Windsor, Ontario, Canada N9B 3P4
| | - Simon Rondeau-Gagné
- Department of Chemistry and Biochemistry, Advanced Materials Centre of Research (AMCORe), University of Windsor, 401 Sunset Avenue, Windsor, Ontario, Canada N9B 3P4
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13
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Li J, Han D, Zhang Q, He Z, Lu Y. Synthesis and properties of fluorinated
benzotriazole‐based donor‐acceptor‐type
conjugated polymers via
Pd‐catalyzed
direct
CH
/
CH
coupling polymerization. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20200716] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Jingwen Li
- School of Materials Science and Engineering, Tianjin Key Laboratory for Photoelectric Materials and Devices, Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education Tianjin University of Technology Tianjin China
| | - Dong Han
- School of Materials Science and Engineering, Tianjin Key Laboratory for Photoelectric Materials and Devices, Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education Tianjin University of Technology Tianjin China
| | - Qiang Zhang
- School of Materials Science and Engineering, Tianjin Key Laboratory for Photoelectric Materials and Devices, Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education Tianjin University of Technology Tianjin China
| | - Zewang He
- School of Materials Science and Engineering, Tianjin Key Laboratory for Photoelectric Materials and Devices, Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education Tianjin University of Technology Tianjin China
| | - Yan Lu
- School of Materials Science and Engineering, Tianjin Key Laboratory for Photoelectric Materials and Devices, Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education Tianjin University of Technology Tianjin China
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14
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Li XC, Xue Y, Song W, Yan Y, Min J, Liu F, Liu X, Lai WY, Huang W. Highly Regioselective Direct C-H Arylation: Facile Construction of Symmetrical Dithienophthalimide-Based π-Conjugated Molecules for Optoelectronics. RESEARCH 2020; 2020:9075697. [PMID: 33015637 PMCID: PMC7510346 DOI: 10.34133/2020/9075697] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 07/26/2020] [Indexed: 11/20/2022]
Abstract
Controllable direct C-H arylation with high regioselectivity is highly desirable yet remains a formidable challenge. Herein, a facile regioselective direct C-H arylation is developed for efficient construction of a variety of symmetrical dithienophthalimide-based π-conjugated molecules. The resulting methodology is applicable to a wide range of substrates, from electron-rich units to electron-deficient units with large steric end groups. Aryl halides have been confirmed to be able to couple with dithienophthalimide (DTI) via direct C-H arylation, showing high regioselectivity. Varying the functional end groups onto the DTI core has been demonstrated to fine tune the emission colors to cover most of the visible spectra. The results suggest a facile strategy towards highly selective direct C-H arylation, opening the prospects towards efficient construction of π-conjugated molecules for various potential optoelectronic applications.
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Affiliation(s)
- Xiang-Chun Li
- Key Laboratory for Organic Electronics and Information Displays, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Yibo Xue
- Key Laboratory for Organic Electronics and Information Displays, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Wan Song
- Key Laboratory for Organic Electronics and Information Displays, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Yu Yan
- Key Laboratory for Organic Electronics and Information Displays, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Jie Min
- Key Laboratory for Organic Electronics and Information Displays, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Fang Liu
- Key Laboratory for Organic Electronics and Information Displays, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Xu Liu
- Key Laboratory for Organic Electronics and Information Displays, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China
| | - Wen-Yong Lai
- Key Laboratory for Organic Electronics and Information Displays, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.,Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China
| | - Wei Huang
- Key Laboratory for Organic Electronics and Information Displays, Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, China.,Frontiers Science Center for Flexible Electronics, Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials & Engineering, Northwestern Polytechnical University, 127 West Youyi Road, Xi'an 710072, China
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15
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Jessop IA, Chong A, Graffo L, Camarada MB, Espinoza C, Angel FA, Saldías C, Tundidor-Camba A, Terraza CA. Synthesis and Characterization of a 2,3-Dialkoxynaphthalene-Based Conjugated Copolymer via Direct Arylation Polymerization (DAP) for Organic Electronics. Polymers (Basel) 2020; 12:E1377. [PMID: 32575423 PMCID: PMC7362231 DOI: 10.3390/polym12061377] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2020] [Revised: 06/12/2020] [Accepted: 06/15/2020] [Indexed: 11/16/2022] Open
Abstract
Poly[(5,5'-(2,3-bis(2-ethylhexyloxy)naphthalene-1,4-diyl)bis(thiophene-2,2'-diyl))-alt-(2,1,3-benzothiadiazole-4,7-diyl)] (PEHONDTBT) was synthesized for the first time and through direct arylation polymerization (DAP) for use as p-donor material in organic solar cells. Optimized reaction protocol leads to a donor-acceptor conjugated polymer in good yield, with less structural defects than its analog obtained from Suzuki polycondensation, and with similar or even higher molecular weight than other previously reported polymers based on the 2,3-dialkoxynaphthalene monomer. The batch-to-batch repeatability of the optimized DAP conditions for the synthesis of PEHONDTBT was proved, showing the robustness of the synthetic strategy. The structure of PEHONDTBT was corroborated by NMR, exhibiting good solubility in common organic solvents, good film-forming ability, and thermal stability. PEHONDTBT film presented an absorption band centered at 498 nm, a band gap of 2.15 eV, and HOMO and LUMO energy levels of -5.31 eV and -3.17 eV, respectively. Theoretical calculations were performed to understand the regioselectivity in the synthesis of PEHONDTBT and to rationalize its optoelectronic properties. Bilayer heterojunction organic photovoltaic devices with PEHONDTBT as the donor layer were fabricated to test their photovoltaic performance, affording low power-conversion efficiency in the preliminary studies.
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Affiliation(s)
- Ignacio A. Jessop
- Organic and Polymeric Materials Research Laboratory, Facultad de Ciencias, Universidad de Tarapacá, P.O. Box 7-D, Arica 1000007, Chile; (A.C.); (L.G.)
| | - Aylin Chong
- Organic and Polymeric Materials Research Laboratory, Facultad de Ciencias, Universidad de Tarapacá, P.O. Box 7-D, Arica 1000007, Chile; (A.C.); (L.G.)
| | - Linda Graffo
- Organic and Polymeric Materials Research Laboratory, Facultad de Ciencias, Universidad de Tarapacá, P.O. Box 7-D, Arica 1000007, Chile; (A.C.); (L.G.)
| | - María B. Camarada
- Centro de Nanotecnología Aplicada, Facultad de Ciencias, Universidad Mayor, Santiago 8580745, Chile;
- Núcleo de Química y Bioquímica, Facultad de Estudios Interdisciplinarios, Universidad Mayor, Santiago 8580745, Chile
| | - Catalina Espinoza
- Departamento de Química Inorgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile; (C.E.); (F.A.A.)
| | - Felipe A. Angel
- Departamento de Química Inorgánica, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile; (C.E.); (F.A.A.)
- Centro de Nanotecnología y Materiales Avanzados, CIEN-UC, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
| | - Cesar Saldías
- Departamento de Química Física, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile;
| | - Alain Tundidor-Camba
- Research Laboratory for Organic Polymers (RLOP), Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile; (A.T.-C.); (C.A.T.)
- UC Energy Research Center, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
| | - Claudio A. Terraza
- Research Laboratory for Organic Polymers (RLOP), Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile; (A.T.-C.); (C.A.T.)
- UC Energy Research Center, Pontificia Universidad Católica de Chile, Santiago 7820436, Chile
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16
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Uegaki K, Nakabayashi K, Yamamoto SI, Koizumi T, Hayashi S. Donor-acceptor random regioregular π-conjugated copolymers based on poly(3-hexylthiophene) with unsymmetrical monothienoisoindigo units. RSC Adv 2020; 10:19034-19040. [PMID: 35518285 PMCID: PMC9053906 DOI: 10.1039/d0ra03557b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 05/12/2020] [Indexed: 11/21/2022] Open
Abstract
Donor-acceptor π-conjugated random copolymers based on regioregular poly(3-hexylthiophene), rr-P3HT, with unsymmetrical monothienoisoindigo moieties were obtained by direct arylation polycondensation of 2-bromo-3-hexylthiophene with unsymmetrical monothienoisoindigo motifs under the optimized conditions [palladium-immobilized on thiol-modified silica gel with chloride counter anions, PITS-Cl (2.5 mol%), PivOH (1.0 equiv.), K2CO3 (3.0 equiv.), DMAc, 100 °C, 24 h]. Incorporation of unsymmetrical monothienoisoindigo electron-acceptor units into the polymers tuned their highest occupied and lowest unoccupied molecular orbital levels, which were close to those of the hole transport material (PEDOT) and electron transport material (PCBM), respectively, in thin-film organic solar cells. Alkyl chains of the unsymmetrical monothienoisoindigo units in the polymers tuned their macrostructural order, resulting in the observation of crystalline patterns and specific absorption peaks in thin films. An organic solar cell containing the most crystalline random copolymer showed an efficiency of 1.91%.
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Affiliation(s)
- Kaoru Uegaki
- Department of Applied Chemistry, National Defence Academy 1-10-20 Hashirimizu Yokosuka Kanagawa 239-8686 Japan
| | - Kazuhiro Nakabayashi
- Graduate School of Organic Materials Science, Yamagata University 4-3-16 Jonan Yonezawa Yamagata 992-8510 Japan
| | - Shin-Ichi Yamamoto
- Department of Applied Chemistry, National Defence Academy 1-10-20 Hashirimizu Yokosuka Kanagawa 239-8686 Japan
| | - Toshio Koizumi
- Department of Applied Chemistry, National Defence Academy 1-10-20 Hashirimizu Yokosuka Kanagawa 239-8686 Japan
| | - Shotaro Hayashi
- Research Center for Molecular Design, School of Environmental Science and Engineering, Kochi University of Technology 185 Miyanokuchi Kami Kochi 782-8502 Japan
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17
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Liu JT, Hase H, Taylor S, Salzmann I, Forgione P. Approaching the Integer‐Charge Transfer Regime in Molecularly Doped Oligothiophenes by Efficient Decarboxylative Cross‐Coupling. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jiang Tian Liu
- Department of Chemistry and Biochemistry Concordia University 7141 rue Sherbrooke O. Montréal QC H4B 1R6 Canada
| | - Hannes Hase
- Department of Physics Concordia University 7141 rue Sherbrooke O. Montréal QC H4B 1R6 Canada
| | - Sarah Taylor
- Department of Chemistry and Biochemistry Concordia University 7141 rue Sherbrooke O. Montréal QC H4B 1R6 Canada
| | - Ingo Salzmann
- Department of Chemistry and Biochemistry Concordia University 7141 rue Sherbrooke O. Montréal QC H4B 1R6 Canada
- Department of Physics Concordia University 7141 rue Sherbrooke O. Montréal QC H4B 1R6 Canada
- Centre for Research in Molecular Modeling (CERMM) Centre for NanoScience Research (CeNSR) Concordia University 7141 rue Sherbrooke O. Montreal QC H4B 1R6 Canada
| | - Pat Forgione
- Department of Chemistry and Biochemistry Concordia University 7141 rue Sherbrooke O. Montréal QC H4B 1R6 Canada
- Center for Green Chemistry and Catalysis McGill University 801 rue Sherbrooke O. Montréal QC H3A 0B8 Canada
- Centre for Research in Molecular Modeling (CERMM) Centre for NanoScience Research (CeNSR) Concordia University 7141 rue Sherbrooke O. Montreal QC H4B 1R6 Canada
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18
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Pankow RM, Ye L, Thompson BC. Influence of the Ester Directing Group on the Inhibition of Defect Formation in Polythiophenes with Direct Arylation Polymerization (DArP). Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00154] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Robert M. Pankow
- Department of Chemistry and Loker Hydrocarbon Research Institute, University of Southern California, Los Angeles, California 90089-1661, United States
| | - Liwei Ye
- Department of Chemistry and Loker Hydrocarbon Research Institute, University of Southern California, Los Angeles, California 90089-1661, United States
| | - Barry C. Thompson
- Department of Chemistry and Loker Hydrocarbon Research Institute, University of Southern California, Los Angeles, California 90089-1661, United States
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19
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Rangel M, Güizado-Rodríguez M, Maldonado JL, Olayo-Valles R, Barba V, Reveles JU. Eco-friendly synthesis of regioregular poly(3-hexylthiophene) by direct arylation polymerization: Analysis of the properties that determine its performance in BHJ solar cells. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122348] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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20
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Liu JT, Hase H, Taylor S, Salzmann I, Forgione P. Approaching the Integer-Charge Transfer Regime in Molecularly Doped Oligothiophenes by Efficient Decarboxylative Cross-Coupling. Angew Chem Int Ed Engl 2020; 59:7146-7153. [PMID: 31961982 DOI: 10.1002/anie.201914458] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Indexed: 01/08/2023]
Abstract
A library of symmetrical linear oligothiophene was prepared employing decarboxylative cross-coupling reaction as the key transformation. Thiophene potassium carboxylate salts were used as cross-coupling partners without the need of co-catalyst, base, or additives. This method demonstrates complete chemoselectivity and is a comprehensive greener approach compared to the existing methods. The modularity of this approach is demonstrated with the preparation of discreet oligothiophenes with up to 10 thiophene repeat units. Symmetrical oligothiophenes are prototypical organic semiconductors where their molecular electrical doping as a function of the chain length can be assessed spectroscopically. An oligothiophene critical length for integer charge transfer was observed to be 10 thiophene units, highlighting the potential use of discrete oligothiophenes as doped conduction or injection layers in organic electronics applications.
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Affiliation(s)
- Jiang Tian Liu
- Department of Chemistry and Biochemistry, Concordia University, 7141 rue Sherbrooke O., Montréal, QC, H4B 1R6, Canada
| | - Hannes Hase
- Department of Physics, Concordia University, 7141 rue Sherbrooke O., Montréal, QC, H4B 1R6, Canada
| | - Sarah Taylor
- Department of Chemistry and Biochemistry, Concordia University, 7141 rue Sherbrooke O., Montréal, QC, H4B 1R6, Canada
| | - Ingo Salzmann
- Department of Chemistry and Biochemistry, Concordia University, 7141 rue Sherbrooke O., Montréal, QC, H4B 1R6, Canada.,Department of Physics, Concordia University, 7141 rue Sherbrooke O., Montréal, QC, H4B 1R6, Canada.,Centre for Research in Molecular Modeling (CERMM), Centre for NanoScience Research (CeNSR), Concordia University, 7141 rue Sherbrooke O., Montreal, QC, H4B 1R6, Canada
| | - Pat Forgione
- Department of Chemistry and Biochemistry, Concordia University, 7141 rue Sherbrooke O., Montréal, QC, H4B 1R6, Canada.,Center for Green Chemistry and Catalysis, McGill University, 801 rue Sherbrooke O., Montréal, QC, H3A 0B8, Canada.,Centre for Research in Molecular Modeling (CERMM), Centre for NanoScience Research (CeNSR), Concordia University, 7141 rue Sherbrooke O., Montreal, QC, H4B 1R6, Canada
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21
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