1
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Effect of random copolymerization on the optical properties of selenophene and thieno[3,4-c]pyrrole-4,6-dione conjugated polymers. Microchem J 2022. [DOI: 10.1016/j.microc.2022.107395] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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2
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Kulszewicz-Bajer I, Nowakowski R, Zagórska M, Maranda-Niedbała A, Mech W, Wróbel Z, Drapała J, Wielgus I, Korona KP. Copolymers Containing 1-Methyl-2-phenyl-imidazole Moieties as Permanent Dipole Generating Units: Synthesis, Spectroscopic, Electrochemical, and Photovoltaic Properties. Molecules 2022; 27:molecules27030915. [PMID: 35164178 PMCID: PMC8840365 DOI: 10.3390/molecules27030915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 01/21/2022] [Accepted: 01/25/2022] [Indexed: 12/10/2022] Open
Abstract
New donor–acceptor conjugated alternating or random copolymers containing 1-methyl-2-phenylbenzimidazole and benzothiadiazole (P1), diketopyrrolopyrrole (P4), or both acceptors (P2) are reported. The specific feature of these copolymers is the presence of a permanent dipole-bearing moiety (1-methyl-2-phenyl imidazole (MPI)) fused with the 1,4-phenylene ring of the polymer main chain. For comparative reasons, polymers of the same main chain but deprived of the MPI group were prepared, namely, P5 with diketopyrrolopyrrole and P3 with both acceptors. The presence of the permanent dipole results in an increase of the optical band gap from 1.51 eV in P3 to 1.57 eV in P2 and from 1.49 eV in P5 to 1.55 eV in P4. It also has a measurable effect on the ionization potential (IP) and electrochemical band gap (EgCV), leading to their decrease from 5.00 and 1.83 eV in P3 to 4.92 and 1.79 eV in P2 as well as from 5.09 and 1.87 eV in P5 to 4.94 and 1.81 eV in P4. Moreover, the presence of permanent dipole lowers the exciton binding energy (Eb) from 0.32 eV in P3 to 0.22 eV in P2 and from 0.38 eV in P5 to 0.26 eV in P4. These dipole-induced changes in the polymer properties should be beneficial for photovoltaic applications. Bulk heterojunction solar cells fabricated from these polymers (with PC71BM acceptor) show low series resistance (rs), indicating good electrical transport properties. The measured power conversion efficiency (PCE) of 0.54% is limited by the unfavorable morphology of the active layer.
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Affiliation(s)
- Irena Kulszewicz-Bajer
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland; (J.D.); (I.W.)
- Correspondence: (I.K.-B.); (M.Z.)
| | - Robert Nowakowski
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland; (R.N.); (A.M.-N.)
| | - Małgorzata Zagórska
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland; (J.D.); (I.W.)
- Correspondence: (I.K.-B.); (M.Z.)
| | - Agnieszka Maranda-Niedbała
- Institute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland; (R.N.); (A.M.-N.)
| | - Wojciech Mech
- Faculty of Physics, Warsaw University, Pasteura 5, 02-093 Warsaw, Poland; (W.M.); (K.P.K.)
| | - Zbigniew Wróbel
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland;
| | - Jakub Drapała
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland; (J.D.); (I.W.)
| | - Ireneusz Wielgus
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland; (J.D.); (I.W.)
| | - Krzysztof P. Korona
- Faculty of Physics, Warsaw University, Pasteura 5, 02-093 Warsaw, Poland; (W.M.); (K.P.K.)
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3
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Low band gap donor-acceptor-donor compounds containing carbazole and naphthalene diimide units: Synthesis, electropolymerization and spectroelectrochemical behaviour. Electrochim Acta 2020. [DOI: 10.1016/j.electacta.2020.136922] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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4
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Assumma L, Kervella Y, Mouesca JM, Mendez M, Maurel V, Dubois L, Gutel T, Sadki S. A New Conducting Copolymer Bearing Electro-Active Nitroxide Groups as Organic Electrode Materials for Batteries. CHEMSUSCHEM 2020; 13:2419-2427. [PMID: 32315495 DOI: 10.1002/cssc.201903313] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 04/19/2020] [Indexed: 06/11/2023]
Abstract
To reduce the amount of conducting additives generally required for polynitroxide-based electrodes, a stable radical (TEMPO) is combined with a conductive copolymer backbone consisting of 2,7-bisthiophene carbazole (2,7-BTC), which is characterized by a high intrinsic electronic conductivity. This work deals with the synthesis of this new polymer functionalized by a redox nitroxide. Fine structural characterization using electron paramagnetic resonance (EPR) techniques established that: 1) the nitroxide radicals are properly attached to the radical chain (continuous wave EPR) and 2) the polymer chain has very rigid conformations leading to a set of well-defined distances between first neighboring pairs of nitroxides (pulsed EPR). The redox group combined with the electroactive polymer showed not only a very high electrochemical reversibility but also a perfect match of redox potentials between the de-/doping reaction of the bisthiophene carbazole backbone and the redox activity of the nitroxide radical. This new organic electrode shows a stable capacity (about 60 mAh g-1 ) and enables a strong reduction in the amount of carbon additive due to the conducting-polymer skeleton.
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Affiliation(s)
- L Assumma
- Université Grenoble Alpes, CEA, CNRS, INAC-SyMMES, 17 rue des Martyrs, 38054, Grenoble, France
| | - Y Kervella
- Université Grenoble Alpes, CEA, CNRS, INAC-SyMMES, 17 rue des Martyrs, 38054, Grenoble, France
| | - J-M Mouesca
- Université Grenoble Alpes, CEA, CNRS, INAC-SyMMES, 17 rue des Martyrs, 38054, Grenoble, France
| | - M Mendez
- Université Grenoble Alpes, CEA, CNRS, INAC-SyMMES, 17 rue des Martyrs, 38054, Grenoble, France
| | - V Maurel
- Université Grenoble Alpes, CEA, CNRS, INAC-SyMMES, 17 rue des Martyrs, 38054, Grenoble, France
| | - L Dubois
- Université Grenoble Alpes, CEA, CNRS, INAC-SyMMES, 17 rue des Martyrs, 38054, Grenoble, France
| | - T Gutel
- Université Grenoble Alpes, CEA, LITEN, 17 rue des Martyrs, 38054, Grenoble, France
| | - S Sadki
- Université Grenoble Alpes, CEA, CNRS, INAC-SyMMES, 17 rue des Martyrs, 38054, Grenoble, France
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5
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Lozano-Hernández LA, Maldonado JL, Garcias-Morales C, Espinosa Roa A, Barbosa-García O, Rodríguez M, Pérez-Gutiérrez E. Efficient OLEDs Fabricated by Solution Process Based on Carbazole and Thienopyrrolediones Derivatives. Molecules 2018; 23:E280. [PMID: 29385678 PMCID: PMC6017460 DOI: 10.3390/molecules23020280] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Revised: 01/26/2018] [Accepted: 01/26/2018] [Indexed: 11/17/2022] Open
Abstract
Four low molecular weight compounds-three of them new, two of them with carbazole (Cz) as functional group and the other two with thienopyrroledione (TPD) group-were used as emitting materials in organic light emitting diodes (OLEDs). Devices were fabricated with the configuration ITO/PEDOT:PSS/emitting material/LiF/Al. The hole injector layer (HIL) and the emitting sheet were deposited by spin coating; LiF and Al were thermally evaporated. OLEDs based on carbazole derivatives show luminances up to 4130 cd/m², large current efficiencies about 20 cd/A and, cautiously, a very impressive External Quantum Efficiency (EQE) up to 9.5%, with electroluminescence peaks located around 490 nm (greenish blue region). Whereas, devices manufactured with TPD derivatives, present luminance up to 1729 cd/m², current efficiencies about 4.5 cd/A and EQE of 1.5%. These results are very competitive regarding previous reported materials/devices.
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Affiliation(s)
- Luis-Abraham Lozano-Hernández
- Research Group of Optical Properties of Materials (GPOM), Centro de Investigaciones en Óptica, 37000 León, Guanajuato, Mexico.
| | - José-Luis Maldonado
- Research Group of Optical Properties of Materials (GPOM), Centro de Investigaciones en Óptica, 37000 León, Guanajuato, Mexico.
| | - Cesar Garcias-Morales
- Research Group of Optical Properties of Materials (GPOM), Centro de Investigaciones en Óptica, 37000 León, Guanajuato, Mexico.
- Departamento de Química Orgánica, Facultad de Ciencias Químicas, Universidad Autónoma de Coahuila, 25280 Saltillo, Coahuila, Mexico.
| | - Arian Espinosa Roa
- Research Group of Optical Properties of Materials (GPOM), Centro de Investigaciones en Óptica, 37000 León, Guanajuato, Mexico.
| | - Oracio Barbosa-García
- Research Group of Optical Properties of Materials (GPOM), Centro de Investigaciones en Óptica, 37000 León, Guanajuato, Mexico.
| | - Mario Rodríguez
- Research Group of Optical Properties of Materials (GPOM), Centro de Investigaciones en Óptica, 37000 León, Guanajuato, Mexico.
| | - Enrique Pérez-Gutiérrez
- CONACYT-Laboratorio de Polímeros, Centro de Química, Instituto de Ciencias, Benemérita Universidad Autónoma de Puebla (BUAP), Complejo de Ciencias, ICUAP, 72570 Puebla, Puebla, Mexico.
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Acevedo-Peña P, Baray-Calderón A, Hu H, González I, Ugalde-Saldivar VM. Measurements of HOMO-LUMO levels of poly(3-hexylthiophene) thin films by a simple electrochemical method. J Solid State Electrochem 2017. [DOI: 10.1007/s10008-017-3587-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Xia B, Lu K, Yuan L, Zhang J, Zhu L, Zhu X, Deng D, Li H, Wei Z. A conformational locking strategy in linked-acceptor type polymers for organic solar cells. Polym Chem 2016. [DOI: 10.1039/c5py01946j] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The concept of introducing intramolecular noncovalent conformational locks into the polymer main chain was implemented to improve the coplanarity of the linked-acceptor polymers. As a result, the novel polymer shows the best power conversion efficiency of 8.18%.
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Affiliation(s)
- Benzheng Xia
- National Center for Nanoscience and Technology
- Beijing 100190
- China
| | - Kun Lu
- National Center for Nanoscience and Technology
- Beijing 100190
- China
| | - Liu Yuan
- National Center for Nanoscience and Technology
- Beijing 100190
- China
| | - Jianqi Zhang
- National Center for Nanoscience and Technology
- Beijing 100190
- China
| | - Lingyun Zhu
- National Center for Nanoscience and Technology
- Beijing 100190
- China
| | - Xiangwei Zhu
- National Center for Nanoscience and Technology
- Beijing 100190
- China
| | - Dan Deng
- National Center for Nanoscience and Technology
- Beijing 100190
- China
| | - Huan Li
- National Center for Nanoscience and Technology
- Beijing 100190
- China
| | - Zhixiang Wei
- National Center for Nanoscience and Technology
- Beijing 100190
- China
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8
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Xia B, Lu K, Zhao Y, Zhang J, Yuan L, Zhu L, Yi Y, Wei Z. Linked-Acceptor Type Conjugated Polymer for High Performance Organic Photovoltaics with an Open-Circuit Voltage Exceeding 1 V. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2015; 2:1500021. [PMID: 27980933 PMCID: PMC5115348 DOI: 10.1002/advs.201500021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2015] [Indexed: 06/05/2023]
Abstract
A linked-acceptor type conjugated polymer is designed and sythesized based on 4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b']dithiophene (BDTT) and linked-thieno[3,4-c]pyrrole-4,6-dione (LTPD). This polymer uses alkyl-substituted thiophene as a bridge. The PBDTT-LTPD includes two TPD units in one repeating unit, which can enhance acceptor density in the polymer backbone and lower the highest occupied molecular orbital (HOMO) level. By contrast, variable alkyl substitutions in the thiophene-bridges ensure the subtle regulation of polymer properties. The solar cells based on PBDTT-LTPD display an open-circuit voltage (Voc) that exceeds 1 V, and a maximum power conversion efficiency (PCE) of 7.59% is obtained. This PCE value is the highest for conventional single-junction bulk heterojunction solar cells with Voc values of up to 1 V. Given that PBDTT-LTPD exhibits a low HOMO energy level and a band gap equivalent to that of poly(3-hexylthiophene), PBDTT-LTPD/phenyl-C61-butyric acid methyl ester may be a promising candidate for the front cell in tandem polymer solar cells.
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Affiliation(s)
- Benzheng Xia
- National Center for Nanoscience and Technology Beijing 100190 P. R. China
| | - Kun Lu
- National Center for Nanoscience and Technology Beijing 100190 P. R. China
| | - Yifan Zhao
- National Center for Nanoscience and Technology Beijing 100190 P. R. China
| | - Jianqi Zhang
- National Center for Nanoscience and Technology Beijing 100190 P. R. China
| | - Liu Yuan
- National Center for Nanoscience and Technology Beijing 100190 P. R. China
| | - Lingyun Zhu
- National Center for Nanoscience and Technology Beijing 100190 P. R. China
| | - Yuanping Yi
- Institute of Chemistry Chinese Academy of Sciences Beijing 100190 P. R. China
| | - Zhixiang Wei
- National Center for Nanoscience and Technology Beijing 100190 P. R. China
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9
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Choi YS, Shin TJ, Jo WH. Small molecules based on thieno[3,4-c]pyrrole-4,6-dione for high open-circuit voltage (VOC) organic photovoltaics: effect of different positions of alkyl substitution on molecular packing and photovoltaic performance. ACS APPLIED MATERIALS & INTERFACES 2014; 6:20035-20042. [PMID: 25333357 DOI: 10.1021/am505608s] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Two different thienopyrroledione (TPD)-based small molecules (SMs) with different alkyl substitution positions were synthesized, and their photovoltaic properties are measured and compared to examine the effect of the alkyl substitution position on their optical, electrochemical, and photovoltaic properties. The use of TPD as an electron-accepting unit in conjugated SMs effectively lowers the highest occupied molecular orbital (HOMO) energy levels of the conjugated SMs and leads to high open-circuit voltage (VOC). The two SMs with n-hexyl group substituted at different positions exhibit almost identical optical and electrochemical properties in the pristine state. However, the crystallographic and morphological characteristics of the two SMs are significantly different, because they are blended with PC71BM. The SM in which n-alkyl groups are substituted at the central accepting unit exhibits a power conversion efficiency (PCE) of 6.0% with VOC=0.94 V, which is among the highest PCE values of TPD-based SM devices, whereas the SM with n-alkyl groups being substituted at the chain ends shows a moderate PCE value of 3.1%.
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Affiliation(s)
- Yoon Suk Choi
- Department of Materials and Engineering, Seoul National University , 1 Gwanak-ro, Gwanak-gu, Seoul 151-744, Korea
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10
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Kim G, Han AR, Lee HR, Lee J, Oh JH, Yang C. Acceptor-acceptor type isoindigo-based copolymers for high-performance n-channel field-effect transistors. Chem Commun (Camb) 2014; 50:2180-3. [PMID: 24430290 DOI: 10.1039/c3cc48013e] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two acceptor-acceptor (A-A) type copolymers (PIIG-BT and PIIG-TPD) with backbones composed exclusively of electron-deficient units are designed and synthesized. Both copolymers show unipolar n-type operations. In particular, PIIG-BT shows electron mobility of up to 0.22 cm(2) V(-1) s(-1). This is a record value for n-type copolymers based on lactam cores.
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Affiliation(s)
- Gyoungsik Kim
- School of Energy and Chemical Engineering, KIER-UNIST Advanced Center for Energy, Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), Ulsan 689-798, South Korea.
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11
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Bujak P, Kulszewicz-Bajer I, Zagorska M, Maurel V, Wielgus I, Pron A. Polymers for electronics and spintronics. Chem Soc Rev 2013; 42:8895-999. [PMID: 24030727 DOI: 10.1039/c3cs60257e] [Citation(s) in RCA: 223] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
This critical review is devoted to semiconducting and high spin polymers which are of great scientific interest in view of further development of the organic electronics and the emerging organic spintronic fields. Diversified synthetic strategies are discussed in detail leading to high molecular mass compounds showing appropriate redox (ionization potential (IP), electron affinity (EA)), electronic (charge carrier mobility, conductivity), optoelectronic (electroluminescence, photoconductivity) and magnetic (magnetization, ferromagnetic spin interactions) properties and used as active components of devices such as n- and p-channel field effect transistors, ambipolar light emitting transistors, light emitting diodes, photovoltaic cells, photodiodes, magnetic photoswitches, etc. Solution processing procedures developed with the goal of depositing highly ordered and oriented films of these polymers are also described. This is completed by the description of principal methods that are used for characterizing these macromolecular compounds both in solution and in the solid state. These involve various spectroscopic methods (UV-vis-NIR, UPS, pulse EPR), electrochemistry and spectroelectrochemistry, magnetic measurements (SQUID), and structural and morphological investigations (X-ray diffraction, STM, AFM). Finally, four classes of polymers are discussed in detail with special emphasis on the results obtained in the past three years: (i) high IP, (ii) high |EA|, (iii) low band gap and (iv) high spin ones.
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Affiliation(s)
- Piotr Bujak
- Faculty of Chemistry, Warsaw University of Technology, Noakowskiego 3, 00-664 Warsaw, Poland.
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Jiang JM, Chen HC, Lin HK, Yu CM, Lan SC, Liu CM, Wei KH. Conjugated random copolymers of benzodithiophene–benzooxadiazole–diketopyrrolopyrrole with full visible light absorption for bulk heterojunction solar cells. Polym Chem 2013. [DOI: 10.1039/c3py00132f] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Lan SC, Yang PA, Zhu MJ, Yu CM, Jiang JM, Wei KH. Thiophene spacers impart crystallinity and enhance the efficiency of benzotrithiophene-based conjugated polymers for bulk heterojunction photovoltaics. Polym Chem 2013. [DOI: 10.1039/c2py20819a] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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14
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Wang H, Gao J, Tong W, Qian Q, Lin K, Liu F. Copolymerization of 3,3′′′-didodecylquaterthiophene with fluorene and silole units: improving photovoltaic performance by tuning energy levels. Polym Chem 2012. [DOI: 10.1039/c2py20460f] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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