1
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Hayashi K, Inouye M. Reliable and Reproducible Separation of 3,9- and 3,10-Dibromoperylenes and the Photophysical Properties of Their Alkynyl Derivatives. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700807] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Koichiro Hayashi
- Graduate School of Pharmaceutical Sciences; University of Toyama; 930-0194 Toyama Japan
| | - Masahiko Inouye
- Graduate School of Pharmaceutical Sciences; University of Toyama; 930-0194 Toyama Japan
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2
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Matsumoto A, Suzuki M, Hayashi H, Kuzuhara D, Yuasa J, Kawai T, Aratani N, Yamada H. Studies on Pyrene and Perylene Derivatives upon Oxidation and Application to a Higher Analogue. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2017. [DOI: 10.1246/bcsj.20160337] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Akinobu Matsumoto
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, Nara 630-0192
| | - Mitsuharu Suzuki
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, Nara 630-0192
| | - Hironobu Hayashi
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, Nara 630-0192
| | - Daiki Kuzuhara
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, Nara 630-0192
| | - Junpei Yuasa
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, Nara 630-0192
| | - Tsuyoshi Kawai
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, Nara 630-0192
| | - Naoki Aratani
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, Nara 630-0192
| | - Hiroko Yamada
- Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama-cho, Ikoma, Nara 630-0192
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3
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Goker S, Hacioglu SO, Hizalan G, Aktas E, Cirpan A, Toppare L. Triphenylamine Based Random Copolymers: The Effect of Molecular Weight on Performance of Solar Cell and Optoelectronic Properties. MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201600544] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Seza Goker
- Department of Chemistry; Middle East Technical University; 06800 Ankara Turkey
| | - Serife O. Hacioglu
- Department of Chemistry; Middle East Technical University; 06800 Ankara Turkey
| | - Gonul Hizalan
- Department of Chemistry; Middle East Technical University; 06800 Ankara Turkey
| | - Ece Aktas
- Department of Chemistry; Middle East Technical University; 06800 Ankara Turkey
| | - Ali Cirpan
- Department of Chemistry; Department of Polymer Science and Technology; The Center for Solar Energy Research and Application (GUNAM); Department of Micro and Nanotechnology; Middle East Technical University; 06800 Ankara Turkey
| | - Levent Toppare
- Department of Chemistry; Department of Polymer Science and Technology; The Center for Solar Energy Research and Application (GUNAM); Department of Biotechnology; Middle East Technical University; 06800 Ankara Turkey
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4
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Wei H, Qiu T, Huang X, Zhou J, Guo J, Jiang C, Luo S, Zeng Z, Wu J. A facile approach toward 1,2-diazabenzo[ghi]perylene derivatives: structures and electronic properties. Chem Commun (Camb) 2017; 53:6740-6743. [DOI: 10.1039/c7cc03362a] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel pyridazine-fused perylenes are synthesized via simple intermolecular oxidative coupling followed by a condensation strategy, in which attractive structural and electronic features are observed.
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Affiliation(s)
- Haipeng Wei
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- Hunan University
- Changsha 410082
- P. R. China
| | - Tiancheng Qiu
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- Hunan University
- Changsha 410082
- P. R. China
| | - Xiaobo Huang
- College of Chemistry and Materials Engineering
- Wenzhou University
- Wenzhou 325035
- P. R. China
| | - Jun Zhou
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- Hunan University
- Changsha 410082
- P. R. China
| | - Jing Guo
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- Hunan University
- Changsha 410082
- P. R. China
| | - Chuanling Jiang
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- Hunan University
- Changsha 410082
- P. R. China
| | - Shenglian Luo
- College of Environmental and Chemical Engineering
- Nanchang Hangkong University
- Nanchang 330063
- P. R. China
| | - Zebing Zeng
- State Key Laboratory of Chemo/Biosensing and Chemometrics
- Hunan University
- Changsha 410082
- P. R. China
| | - Jishan Wu
- Department of Chemistry
- National University of Singapore
- Singapore
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5
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Jiang T, Yang J, Tao Y, Fan C, Xue L, Zhang Z, Li H, Li Y, Huang W. Random terpolymer with a cost-effective monomer and comparable efficiency to PTB7-Th for bulk-heterojunction polymer solar cells. Polym Chem 2016. [DOI: 10.1039/c5py01771h] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A new random terpolymer PTB7-Th-T2 was designed and synthesized for high performance PSCs by incorporating a significantly lower-cost 2,2′-bithiophene monomer to the famous PTB7-Th skeleton.
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Affiliation(s)
- Tao Jiang
- Key Lab for Flexible Electronics & Institute of Advanced Materials
- Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech University
- Nanjing
- P. R. China
| | - Jie Yang
- Key Lab for Flexible Electronics & Institute of Advanced Materials
- Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech University
- Nanjing
- P. R. China
| | - Youtian Tao
- Key Lab for Flexible Electronics & Institute of Advanced Materials
- Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech University
- Nanjing
- P. R. China
| | - Cong Fan
- Key Lab for Flexible Electronics & Institute of Advanced Materials
- Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech University
- Nanjing
- P. R. China
| | - Lingwei Xue
- Beijing National Laboratory of Molecular Sciences
- CAS Key Laboratory of Organic Solids
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Zhiguo Zhang
- Beijing National Laboratory of Molecular Sciences
- CAS Key Laboratory of Organic Solids
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Hai Li
- Key Lab for Flexible Electronics & Institute of Advanced Materials
- Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech University
- Nanjing
- P. R. China
| | - Yongfang Li
- Beijing National Laboratory of Molecular Sciences
- CAS Key Laboratory of Organic Solids
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Wei Huang
- Key Lab for Flexible Electronics & Institute of Advanced Materials
- Jiangsu National Synergistic Innovation Center for Advanced Materials (SICAM)
- Nanjing Tech University
- Nanjing
- P. R. China
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6
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Kim JH, Song CE, Shin WS, Kim B, Kang IN, Hwang DH. Modulation of optical and electronic properties of quinoxailine-based conjugated polymers for organic photovoltaic cells. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/pola.27642] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Ji-Hoon Kim
- Department of Chemistry; and Chemistry Institute for Functional Materials; Pusan National University; Busan 609-735 Republic of Korea
| | - Chang Eun Song
- Energy Materials Research Division, Korea Research Institute of Chemical Technology; Daejeon Republic of Korea
| | - Won Suk Shin
- Energy Materials Research Division, Korea Research Institute of Chemical Technology; Daejeon Republic of Korea
| | - BongSoo Kim
- Department of Science Education; Ewha Womans University, 52, Ewhayeodae-gil, Seodaemun-gu; Seoul 120-750 Republic of Korea
| | - In-Nam Kang
- Department of Chemistry; The Catholic University of Korea; Bucheon 420-743 Republic of Korea
| | - Do-Hoon Hwang
- Department of Chemistry; and Chemistry Institute for Functional Materials; Pusan National University; Busan 609-735 Republic of Korea
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7
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Attri P, Bharti V, Kim YS, Gaur J, Chand S, Kwon GC, Lee SH, Lee W, Choi EH, Kim IT. Plasma modification of poly(2-heptadecyl-4-vinylthieno[3,4-d]thiazole) low bandgap polymer and its application in solar cells. Phys Chem Chem Phys 2014; 16:27043-52. [DOI: 10.1039/c4cp03323j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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8
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Wang N, Bao X, Yan Y, Ouyang D, Sun M, Roy VAL, Lee CS, Yang R. Synthesis and photovoltaic properties of conjugated D-A copolymers based on thienyl substituted pyrene and diketopyrrolopyrrole for polymer solar cells. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/pola.27378] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Ning Wang
- CAS Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences; Qingdao 266101 China
| | - Xichang Bao
- CAS Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences; Qingdao 266101 China
| | - Yan Yan
- Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong; Tat Chee Ave Hong Kong
| | - Dan Ouyang
- CAS Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences; Qingdao 266101 China
| | - Mingliang Sun
- Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong; Tat Chee Ave Hong Kong
- Institute of Materials Science and Engineering, Ocean University of China; Qingdao 266100 China
| | - V. A. L. Roy
- Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong; Tat Chee Ave Hong Kong
| | - Chun Sing Lee
- Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong; Tat Chee Ave Hong Kong
| | - Renqiang Yang
- CAS Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences; Qingdao 266101 China
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9
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Tang R, Zhang F, Fu Y, Xu Q, Wang X, Zhuang X, Wu D, Giannakopoulos A, Beljonne D, Feng X. Efficient Approach to Electron-Deficient 1,2,7,8-Tetraazaperylene Derivatives. Org Lett 2014; 16:4726-9. [DOI: 10.1021/ol502109y] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Ruizhi Tang
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Metal
Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Fan Zhang
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Metal
Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Yubin Fu
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Metal
Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Qing Xu
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Metal
Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Xinyang Wang
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Metal
Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Xiaodong Zhuang
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Metal
Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Dongqing Wu
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Metal
Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | | | - David Beljonne
- Université de Mons - UMONS/Materia Nova, Place du Parc, 20, B-7000 Mons, Belgium
| | - Xinliang Feng
- School
of Chemistry and Chemical Engineering, State Key Laboratory of Metal
Matrix Composites, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
- Max-Planck Institute for Polymer Research, Ackermannweg 10, 55128, Mainz, Germany
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10
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Kim JH, Park JB, Shin SA, Hyun MH, Hwang DH. Low-bandgap copolymers consisting of 2,1,3-benzoselenadiazole and carbazole derivatives with thiophene or selenophene π-bridges. POLYMER 2014. [DOI: 10.1016/j.polymer.2014.05.055] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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11
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Huo MM, Liang R, Xing YD, Hu R, Zhao NJ, Zhang W, Fu LM, Ai XC, Zhang JP, Hou JH. Side-chain effects on the solution-phase conformations and charge photogeneration dynamics of low-bandgap copolymers. J Chem Phys 2014; 139:124904. [PMID: 24089801 DOI: 10.1063/1.4821751] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Solution-phase conformations and charge photogeneration dynamics of a pair of low-bandgap copolymers based on benzo[1,2-b:4,5-b(')]dithiophene (BDT) and thieno[3,4-b]thiophene (TT), differed by the respective carbonyl (-C) and ester (-E) substituents at the TT units, were comparatively investigated by using near-infrared time-resolved absorption (TA) spectroscopy at 25 °C and 120 °C. Steady-state and TA spectroscopic results corroborated by quantum chemical analyses prove that both PBDTTT-C and PBDTTT-E in chlorobenzene solutions are self-aggregated; however, the former bears a relatively higher packing order. Specifically, PBDTTT-C aggregates with more π-π stacked domains, whereas PBDTTT-E does with more random coils interacting strongly at the chain intersections. At 25 °C, the copolymers exhibit comparable exciton lifetimes (~1 ns) and fluorescence quantum yields (~2%), but distinctly different charge photogeneration dynamics: PBDTTT-C on photoexcitation gives rise to a branching ratio of charge separated (CS) over charge transfer (CT) states more than 20% higher than PBDTTT-E does, correlating with their photovoltaic performance. Temperature and excitation-wavelength dependent exciton∕charge dynamics suggest that the CT states localize at the chain intersections that are survivable up to 120 °C, and that the excitons and the CS states inhabit the stretched strands and the also thermally robust orderly stacked domains. The stable self-aggregation structures and the associated primary charge dynamics of the PBDTTT copolymers in solutions are suggested to impact intimately on the morphologies and the charge photogeneration efficiency of the solid-state photoactive layers.
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Affiliation(s)
- Ming-Ming Huo
- Center for Condensed Matter Science and Technology, Department of Physics, Harbin Institute of Technology, Harbin 150001, China
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12
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Kim JH, Shin SA, Park JB, Song CE, Shin WS, Yang H, Li Y, Hwang DH. Fluorinated Benzoselenadiazole-Based Low-Band-Gap Polymers for High Efficiency Inverted Single and Tandem Organic Photovoltaic Cells. Macromolecules 2014. [DOI: 10.1021/ma4026493] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Ji-Hoon Kim
- Department of Chemistry and Chemistry Institute for Functional
Materials, Pusan National University, Busan 609-735, Republic of Korea
| | - Seung Ah Shin
- Department of Chemistry and Chemistry Institute for Functional
Materials, Pusan National University, Busan 609-735, Republic of Korea
| | - Jong Baek Park
- Department of Chemistry and Chemistry Institute for Functional
Materials, Pusan National University, Busan 609-735, Republic of Korea
| | - Chang Eun Song
- Department of Materials
Science and Engineering KAIST, Daejeon 305-701, Republic of Korea
| | - Won Suk Shin
- Korea Research Institute of Chemical Technology, 100 Jang-dong, Yuseong-gu, Daejeon 305-343, Republic of Korea
| | - Hoichang Yang
- Department of Advanced
Fiber Engineering, Optoelectronic Hybrids Research Center, Inha University, Incheon 402-751, Republic of Korea
| | - Yongfang Li
- Beijing National Laboratory for Molecular
Sciences and Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Do-Hoon Hwang
- Department of Chemistry and Chemistry Institute for Functional
Materials, Pusan National University, Busan 609-735, Republic of Korea
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13
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Chung HS, Lee WH, Song CE, Shin Y, Kim J, Lee SK, Shin WS, Moon SJ, Kang IN. Highly Conjugated Side-Chain-Substituted Benzo[1,2-b:4,5-b′]dithiophene-Based Conjugated Polymers for Use in Polymer Solar Cells. Macromolecules 2013. [DOI: 10.1021/ma402245t] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Ha-Seul Chung
- Department
of Chemistry, The Catholic University of Korea, Bucheon, Republic of Korea
| | - Woo-Hyung Lee
- Department
of Chemistry, The Catholic University of Korea, Bucheon, Republic of Korea
| | - Chang Eun Song
- Department
of Materials Science and Engineering, KAIST, Daejeon 305-701, Republic of Korea
| | - Yurim Shin
- Department
of Chemistry, The Catholic University of Korea, Bucheon, Republic of Korea
| | - Joonghan Kim
- Department
of Chemistry, The Catholic University of Korea, Bucheon, Republic of Korea
| | - Sang Kyu Lee
- Energy
Materials Research Division, Korea Research Institute of Chemical Technology, Daejeon, Republic of Korea
| | - Won Suk Shin
- Energy
Materials Research Division, Korea Research Institute of Chemical Technology, Daejeon, Republic of Korea
| | - Sang-Jin Moon
- Energy
Materials Research Division, Korea Research Institute of Chemical Technology, Daejeon, Republic of Korea
| | - In-Nam Kang
- Department
of Chemistry, The Catholic University of Korea, Bucheon, Republic of Korea
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14
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Kim JH, Song CE, Shin N, Kang H, Wood S, Kang IN, Kim BJ, Kim B, Kim JS, Shin WS, Hwang DH. High-crystalline medium-band-gap polymers consisting of benzodithiophene and benzotriazole derivatives for organic photovoltaic cells. ACS APPLIED MATERIALS & INTERFACES 2013; 5:12820-12831. [PMID: 23905751 DOI: 10.1021/am401926h] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Two semiconducting conjugated polymers were synthesized via Stille polymerization. The structures combined unsubstituted or (triisopropylsilyl)ethynyl (TIPS)-substituted 2,6-bis(trimethylstannyl)benzo[1,2-b:4.5-b']dithiophene (BDT) as a donor unit and benzotriazole with a symmetrically branched alkyl side chain (DTBTz) as an acceptor unit. We investigated the effects of the different BDT moieties on the optical, electrochemical, and photovoltaic properties of the polymers and the film crystallinities and carrier mobilities. The optical-band-gap energies were measured to be 1.97 and 1.95 eV for PBDT-DTBTz and PTIPSBDT-DTBTz, respectively. Bulk heterojunction photovoltaic devices were fabricated and power conversion efficiencies of 5.5% and 2.9% were found for the PTIPSBDT-DTBTz- and PBDT-DTBTz-based devices, respectively. This difference was explained by the more optimal morphology and higher carrier mobility in the PTIPSBDT-DTBTz-based devices. This work demonstrates that, under the appropriate processing conditions, TIPS groups can change the molecular ordering and lower the highest occupied molecular orbital level, providing the potential for improved solar cell performance.
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Affiliation(s)
- Ji-Hoon Kim
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University , Busan 609-735, Republic of Korea
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15
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Dharmapurikar SS, Arulkashmir A, Das C, Muddellu P, Krishnamoorthy K. Enhanced hole carrier transport due to increased intermolecular contacts in small molecule based field effect transistors. ACS APPLIED MATERIALS & INTERFACES 2013; 5:7086-7093. [PMID: 23808768 DOI: 10.1021/am401379a] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Small molecules and oligomers can be synthesized with very high purity and precise molecular weights, but they often do not form uniform thin films while processed from solution. Decreased intermolecular contacts between the small molecules are another disadvantage. To increase the intermolecular contacts in small molecules, we have chosen i-indigo, as one of the conjugated molecular units. The electron poor i-indigo has been connected with electron rich triphenylamine to synthesize a donor-acceptor-donor type small molecule. The propeller shaped triphenylamine helps to increase the solubility of the small molecule as well as isotropic charge transport. The intermolecular spacing between the molecules has been found to be low and did not vary as a function of thermal annealing. This implies that the intermolecular contacts between the small molecules are enhanced, and they do not vary as a function of thermal annealing. Organic field effect transistors (OFET) fabricated using a small molecule exhibited a hole carrier mobility (μ) of 0.3 cm(2)/(V s) before thermal annealing. A marginal increase in μ was observed upon thermal annealing at 150 °C, which has been attributed to changes in thin film morphology. The morphology of the thin films plays an important role in charge transport in addition to the intermolecular spacing that can be modulated with a judicious choice of the conjugated molecular unit.
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Affiliation(s)
- Satej S Dharmapurikar
- Polymer Science and Engineering Division, CSIR-National Chemical Laboratory, Pune 411008, Maharashtra, India
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16
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Attri P, Lee SH, Hwang SW, Kim JIL, Lee SW, Kwon GC, Choi EH, Kim IT. Elucidating interactions and conductivity of newly synthesised low bandgap polymer with protic and aprotic ionic liquids. PLoS One 2013; 8:e68970. [PMID: 23874829 PMCID: PMC3706474 DOI: 10.1371/journal.pone.0068970] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Accepted: 06/03/2013] [Indexed: 11/30/2022] Open
Abstract
In this paper, we have examined the conductivity and interaction studies of ammonium and imidazolium based ionic liquids (ILs) with the newly synthesised low bandgap polymer (Poly(2-heptadecyl-4-vinylthieno[3,4-d]thiazole) (PHVTT)). Use of low bandgap polymers is the most suitable way to harvest a broader spectrum of solar radiations for solar cells. But, still there is lack of most efficient low bandgap polymer. In order to solve this problem, we have synthesised a new low bandgap polymer and investigated its interaction with the ILs to enhance its conductivity. ILs may undergo almost unlimited structural variations; these structural variations have attracted extensive attention in polymer studies. The aim of present work is to illustrate the state of art progress of implementing the interaction of ILs (protic and aprotic ILs) with newly synthesised low bandgap polymer. In addition to this, our UV-Vis spectroscopy, confocal Raman spectroscopy and FT-IR spectroscopy results have revealed that all studied ILs (tributylmethylammonium methyl sulfate ([N1444][MeSO4] from ammonium family) and 1-methylimidazolium chloride ([Mim]Cl, and 1-butyl-3-methylimidazolium chloride ([Bmim]Cl from imidazolium family) have potential to interact with polymer. Our semi empirical calculation with help of Hyperchem 7 shows that protic IL ([Mim]Cl) interacts strongly with the low bandgap polymer through the H-bonding. Further, protic ILs shows enhanced conductivity than aprotic ILs in association with low bandgap polymer. This study provides the combined effect of low bandgap polymer and ILs that may generate many theoretical and experimental opportunities.
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Affiliation(s)
- Pankaj Attri
- Plasma Bioscience Research Center, Department of Electrical and Biological Physics, Kwangwoon University, Seoul, Korea
| | - Seung-Hyun Lee
- Graduate School of Information Contents, Kwangwoon University, Seoul, Korea
| | - Sun Woo Hwang
- Department of Chemistry, Kwangwoon University, Seoul, Korea
| | | | - Sang Woo Lee
- Department of Chemistry, Kwangwoon University, Seoul, Korea
| | - Gi-Chung Kwon
- Plasma Bioscience Research Center, Department of Electrical and Biological Physics, Kwangwoon University, Seoul, Korea
| | - Eun Ha Choi
- Plasma Bioscience Research Center, Department of Electrical and Biological Physics, Kwangwoon University, Seoul, Korea
- * E-mail: (ITK); (EHC)
| | - In Tae Kim
- Department of Chemistry, Kwangwoon University, Seoul, Korea
- * E-mail: (ITK); (EHC)
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