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Yamada S, Kataoka M, Yoshida K, Nagata M, Agou T, Fukumoto H, Konno T. Photophysical and thermophysical behavior of D-π-A-type fluorinated diphenylacetylenes bearing an alkoxy and an ethoxycarbonyl group at both longitudinal molecular terminals. J Fluor Chem 2022. [DOI: 10.1016/j.jfluchem.2022.110032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Yamada S, Sato M, Uto E, Kataoka M, Morita M, Konno T. Fluorinated tolane-based fluorophores bearing a branched flexible unit with aggregation-induced emission enhancement characteristics. NEW J CHEM 2022. [DOI: 10.1039/d1nj05822c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Precise molecular design of fluorinated tolane-based fluorophores can control both the electron density and molecular aggregated structures.
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Affiliation(s)
- Shigeyuki Yamada
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Masaya Sato
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Eiji Uto
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Mitsuki Kataoka
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Masato Morita
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
| | - Tsutomu Konno
- Faculty of Molecular Chemistry and Engineering, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606-8585, Japan
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Erazo EA, Gómez M, Rios L, Patiño EJ, Cortés MT, Ortiz P. Electrodeposited PEDOT:PSS-Al 2O 3 Improves the Steady-State Efficiency of Inverted Perovskite Solar Cells. Polymers (Basel) 2021; 13:polym13234162. [PMID: 34883665 PMCID: PMC8659661 DOI: 10.3390/polym13234162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Revised: 11/16/2021] [Accepted: 11/22/2021] [Indexed: 01/20/2023] Open
Abstract
The atomic layer deposition (ALD) of Al2O3 between perovskite and the hole transporting material (HTM) PEDOT:PSS has previously been shown to improve the efficiency of perovskite solar cells. However, the costs associated with this technique make it unaffordable. In this work, the deposition of an organic-inorganic PEDOT:PSS-Cl-Al2O3 bilayer is performed by a simple electrochemical technique with a final annealing step, and the performance of this material as HTM in inverted perovskite solar cells is studied. It was found that this material (PEDOT:PSS-Al2O3) improves the solar cell performance by the same mechanisms as Al2O3 obtained by ALD: formation of an additional energy barrier, perovskite passivation, and increase in the open-circuit voltage (Voc) due to suppressed recombination. As a result, the incorporation of the electrochemical Al2O3 increased the cell efficiency from 12.1% to 14.3%. Remarkably, this material led to higher steady-state power conversion efficiency, improving a recurring problem in solar cells.
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Affiliation(s)
- Eider A. Erazo
- Departamento de Química, Universidad de los Andes, Bogotá D.C. 111711, Colombia;
| | - Martín Gómez
- Departamento de Ingeniería Química, Universidad de los Andes, Bogotá D.C. 111711, Colombia; (M.G.); (P.O.)
| | - Leonardo Rios
- Superconductivity and Nanodevices Laboratory, Departamento de Física, Universidad de los Andes, Bogotá D.C. 111711, Colombia; (L.R.); (E.J.P.)
| | - Edgar J. Patiño
- Superconductivity and Nanodevices Laboratory, Departamento de Física, Universidad de los Andes, Bogotá D.C. 111711, Colombia; (L.R.); (E.J.P.)
| | - María T. Cortés
- Departamento de Química, Universidad de los Andes, Bogotá D.C. 111711, Colombia;
- Correspondence:
| | - Pablo Ortiz
- Departamento de Ingeniería Química, Universidad de los Andes, Bogotá D.C. 111711, Colombia; (M.G.); (P.O.)
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Boonnab S, Chaiwai C, Nalaoh P, Manyum T, Namuangruk S, Chitpakdee C, Sudyoadsuk T, Promarak V. Synthesis, Characterization, and Physical Properties of Pyrene‐Naphthalimide Derivatives as Emissive Materials for Electroluminescent Devices. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100134] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Sumita Boonnab
- School of Chemistry Institute of Science Suranaree University of Technology Muang District Nakhon Ratchasima 30000 Thailand
| | - Chaiyon Chaiwai
- Department of Materials Science and Engineering School of Molecular Science and Engineering Vidyasirimedhi Institute of Science and Technology Wangchan Rayong 21210 Thailand
| | - Phattananawee Nalaoh
- Department of Materials Science and Engineering School of Molecular Science and Engineering Vidyasirimedhi Institute of Science and Technology Wangchan Rayong 21210 Thailand
| | - Thanaporn Manyum
- School of Chemistry Institute of Science Suranaree University of Technology Muang District Nakhon Ratchasima 30000 Thailand
| | - Supawadee Namuangruk
- National Nanotechnology Center (NANOTEC) National Science and Technology Development Agency Klong Luang Pathum Thani 12120 Thailand
| | - Chirawat Chitpakdee
- National Nanotechnology Center (NANOTEC) National Science and Technology Development Agency Klong Luang Pathum Thani 12120 Thailand
| | - Taweesak Sudyoadsuk
- Department of Materials Science and Engineering School of Molecular Science and Engineering Vidyasirimedhi Institute of Science and Technology Wangchan Rayong 21210 Thailand
| | - Vinich Promarak
- Department of Materials Science and Engineering School of Molecular Science and Engineering Vidyasirimedhi Institute of Science and Technology Wangchan Rayong 21210 Thailand
- Research Network of NANOTEC-VISTEC on Nanotechnology for Energy Vidyasirimedhi Institute of Science and Technology Wangchan Rayong 21210 Thailand
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Systematic Studies on the Effect of Fluorine Atoms in Fluorinated Tolanes on Their Photophysical Properties. Molecules 2021; 26:molecules26082274. [PMID: 33919915 PMCID: PMC8070916 DOI: 10.3390/molecules26082274] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 04/06/2021] [Accepted: 04/08/2021] [Indexed: 11/29/2022] Open
Abstract
In this study, we synthesized a series of fluorinated and non-fluorinated tolanes, in which one or more fluorine atoms were systematically introduced into one aromatic ring of a tolane scaffold, and systematically evaluated their photophysical properties. All the tolanes with or without fluorine substituents were found to have poor photoluminescence (PL) in tetrahydrofuran (THF) solutions. On the other hand, in the crystalline state, non-fluorinated and fluorinated tolanes with one or four fluorine atoms were less emissive, whereas fluorinated tolanes with three or five fluorine atoms exhibited high PL efficiencies (ФPL) up to 0.51. X-ray crystallographic analyses of the emissive fluorinated tolanes revealed that the position of the fluorine substituent played a key role in achieving a high ФPL. Fluorine substituents at the ortho (2/6) and para (4) positions led to tight and rigid packing due to plural π–π stacking and/or hydrogen bonding interactions, resulting in enhanced ФPL caused by the suppression of non-radiative deactivation. Additionally, fluorinated tolanes with three fluorine atoms exhibited notable aggregation-induced PL emission enhancement in THF/water mixed solvents. This demonstrates that the PL characteristics of small PL materials can be tuned depending on the usage requirements.
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Meng D, Wang R, Lin JB, Yang JL, Nuryyeva S, Lin YC, Yuan S, Wang ZK, Zhang E, Xiao C, Zhu D, Jiang L, Zhao Y, Li Z, Zhu C, Houk KN, Yang Y. Chlorinated Spiroconjugated Fused Extended Aromatics for Multifunctional Organic Electronics. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2006120. [PMID: 33586281 DOI: 10.1002/adma.202006120] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 01/06/2021] [Indexed: 06/12/2023]
Abstract
The synthesis of a new molecule, SFIC-Cl, is reported, which features enhanced π-electron delocalization by spiroconjugation and narrowed bandgap by chlorination. SFIC-Cl is integrated into a single-crystal transistor (OFET) and organic light-emitting diode (OLED). The material demonstrates remarkable transport abilities across various solution-processed OFETs and retains efficient radiance in a near-infrared OLED emitting light at 700 nm. Furthermore, the intermolecular multi-dimensional connection of SFIC-Cl enables the fabrication of a single-component large-area (2 × 2 cm2 ) near-infrared OLED by spin-coating. The SFIC-Cl-acceptor-based solar cell shows excellent power conversion efficiency of 10.16% resulting from the broadened and strong absorption and well-matched energy levels. The study demonstrates that chlorinated spiroconjugated fused systems offer a novel direction toward the development of high-performance organic semiconductor materials for hybrid organic electronic devices.
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Affiliation(s)
- Dong Meng
- Department of Materials Science and Engineering and California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Rui Wang
- Department of Materials Science and Engineering and California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Janice B Lin
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Jonathan Lee Yang
- Department of Chemistry, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Selbi Nuryyeva
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Yu-Che Lin
- Department of Materials Science and Engineering and California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Shuai Yuan
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123, China
| | - Zhao-Kui Wang
- Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou, 215123, China
| | - Elizabeth Zhang
- Department of Materials Science and Engineering and California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Chengyi Xiao
- Beijing Advanced Innovation Center for Soft Matter Science and Engineering & State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, China
| | - Danlei Zhu
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Lang Jiang
- Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Yepin Zhao
- Department of Materials Science and Engineering and California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Zhenxing Li
- State Key Laboratory of Heavy Oil Processing College of New Energy and Materials China University of Petroleum (Beijing), Beijing, 102249, China
| | - Chenhui Zhu
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA, 94704, USA
| | - Kendall N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Yang Yang
- Department of Materials Science and Engineering and California NanoSystems Institute, University of California, Los Angeles, Los Angeles, CA, 90095, USA
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