1
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Shinde GH, Sundén H. Boron-Mediated Regioselective Aromatic C-H Functionalization via an Aryl BF 2 Complex. Chemistry 2023; 29:e202203505. [PMID: 36383388 DOI: 10.1002/chem.202203505] [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: 11/11/2022] [Revised: 11/15/2022] [Accepted: 11/16/2022] [Indexed: 11/17/2022]
Abstract
An efficient regioselective functionalization of 2-aryl-heteroarenes and aryl aldehydes via an azaaryl BF2 complex has been developed. Mechanistically the reaction comprises fluoride to bromide ligand exchange on an aryl boron species and consecutive C-B bond cleavage to deliver a broad range of functionalized products. The reaction is high yielding, has a broad substrate scope where several different heteroarenes can be functionalized with chloro, bromo, iodo, hydroxyl, amine and BF2 in a highly regioselective fashion. The method can be applied for late-stage functionalization or for rapid skeleton remodeling with for instance cross-couplings.
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Affiliation(s)
- Ganesh H Shinde
- Department of Chemistry and Molecular Biology, University of Gothenburg, 412 96, Gothenburg, Sweden
| | - Henrik Sundén
- Department of Chemistry and Molecular Biology, University of Gothenburg, 412 96, Gothenburg, Sweden.,Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 412 96, Gothenburg, Sweden
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2
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Taylor D, Malcomson T, Zhakeyev A, Rosair GM, Paterson MJ, Marques-Hueso J, Dalgarno SJ, Vilela F. Regioselective electrophilic aromatic borylation as a method for synthesising sterically hindered benzothiadiazole fluorophores. RSC Adv 2023; 13:5826-5832. [PMID: 36846398 PMCID: PMC9951066 DOI: 10.1039/d2ra08319a] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 02/01/2023] [Indexed: 02/18/2023] Open
Abstract
Regioselective stepwise phenylation of 4,7-diarylbenzo[c][1,2,5]thiadiazole fluorophores has been achieved through a facile one-pot, three-step synthetic strategy involving sequential borylation, hydroxydechlorination and Suzuki-Miyaura cross-coupling reactions. Crucial to the selectivity was the use of BCl3 to regioselectively install a boronic acid group in the ortho-position of only one of the diaryl groups. The subsequent introduction of ortho-phenyl groups through Suzuki-Miyaura cross-coupling gave rise to twisted structures with hindered intramolecular rotation, providing a structural lever with which the fluorophore absorption and emission properties could be adjusted.
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Affiliation(s)
- Dominic Taylor
- Institute of Chemical Sciences, School of Engineering and Physical Science, Heriot-Watt University Riccarton Edinburgh EH14 4AS UK
| | | | - Adilet Zhakeyev
- Institute of Sensors, Signals and Systems, School of Engineering and Physical Science, Heriot-Watt UniversityRiccartonEdinburghUK
| | - Georgina M. Rosair
- Institute of Chemical Sciences, School of Engineering and Physical Science, Heriot-Watt UniversityRiccartonEdinburghEH14 4ASUK
| | - Martin J. Paterson
- Institute of Chemical Sciences, School of Engineering and Physical Science, Heriot-Watt UniversityRiccartonEdinburghEH14 4ASUK
| | - Jose Marques-Hueso
- Institute of Sensors, Signals and Systems, School of Engineering and Physical Science, Heriot-Watt UniversityRiccartonEdinburghUK
| | - Scott J. Dalgarno
- Institute of Chemical Sciences, School of Engineering and Physical Science, Heriot-Watt UniversityRiccartonEdinburghEH14 4ASUK
| | - Filipe Vilela
- Institute of Chemical Sciences, School of Engineering and Physical Science, Heriot-Watt University Riccarton Edinburgh EH14 4AS UK
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3
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Liu K, Jiang Z, Lalancette RA, Tang X, Jäkle F. Near-Infrared-Absorbing B-N Lewis Pair-Functionalized Anthracenes: Electronic Structure Tuning, Conformational Isomerism, and Applications in Photothermal Cancer Therapy. J Am Chem Soc 2022; 144:18908-18917. [PMID: 36194812 DOI: 10.1021/jacs.2c06538] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
B-N-fused dianthracenylpyrazine derivatives are synthesized to generate new low gap chromophores. Photophysical and electrochemical, crystal packing, and theoretical studies have been performed. Two energetically similar conformers are identified by density functional theory calculations, showing that the core unit adopts a curved saddle-like shape (x-isomer) or a zig-zag conformation (z-isomer). In the solid state, the z-isomer is prevalent according to an X-ray crystal structure of a C6F5-substituted derivative (4-Pf), but variable-temperature nuclear magnetic resonance studies suggest a dynamic behavior in solution. B-N fusion results in a large decrease of the HOMO-LUMO gap and dramatically lowers the LUMO energy compared to the all-carbon analogues. 4-Pf in particular shows significant absorbance at greater than 700 nm while being almost transparent throughout the visible region. After encapsulation in the biodegradable polymer DSPE-mPEG2000, 4-Pf nanoparticles (4-Pf-NPs) exhibit good water solubility, high photostability, and an excellent photothermal conversion efficiency of ∼41.8%. 4-Pf-NPs are evaluated both in vitro and in vivo as photothermal therapeutic agents. These results uncover B-N Lewis pair functionalization of PAHs as a promising strategy toward new NIR-absorbing materials for photothermal applications.
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Affiliation(s)
- Kanglei Liu
- Department of Chemistry, Rutgers University-Newark, 73 Warren Street, Newark, New Jersey 07102, United States.,Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102400, P. R. China
| | - Zhenqi Jiang
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102400, P. R. China.,School of Medical Technology, Beijing Institute of Technology, Beijing 102400, P. R. China
| | - Roger A Lalancette
- Department of Chemistry, Rutgers University-Newark, 73 Warren Street, Newark, New Jersey 07102, United States
| | - Xiaoying Tang
- School of Medical Technology, Beijing Institute of Technology, Beijing 102400, P. R. China
| | - Frieder Jäkle
- Department of Chemistry, Rutgers University-Newark, 73 Warren Street, Newark, New Jersey 07102, United States
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4
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Rej S, Chatani N. Regioselective Transition‐Metal‐Free C(sp
2
)−H Borylation: A Subject of Practical and Ongoing Interest in Synthetic Organic Chemistry. Angew Chem Int Ed Engl 2022; 61:e202209539. [DOI: 10.1002/anie.202209539] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Indexed: 12/22/2022]
Affiliation(s)
- Supriya Rej
- Department of Applied Chemistry Faculty of Engineering and Research Center for Environmental Preservation Osaka University Suita, Osaka 565-0871 Japan
- Institut für Chemie Technische Universität Berlin Strasse des 17. Juni 115 10623 Berlin Germany
| | - Naoto Chatani
- Department of Applied Chemistry Faculty of Engineering and Research Center for Environmental Preservation Osaka University Suita, Osaka 565-0871 Japan
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5
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Nayak P, Murali AC, Pal PK, Priyakumar UD, Chandrasekhar V, Venkatasubbaiah K. Tetra-Coordinated Boron-Functionalized Phenanthroimidazole-Based Zinc Salen as a Photocatalyst for the Cycloaddition of CO 2 and Epoxides. Inorg Chem 2022; 61:14511-14516. [PMID: 36074754 DOI: 10.1021/acs.inorgchem.2c02693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A unique B-N coordinated phenanthroimidazole-based zinc salen was synthesized. The zinc salen thus synthesized acts as a photocatalyst for the cycloaddition of carbon dioxide with terminal epoxides under ambient conditions. DFT study of the cycloaddition of carbon dioxide with terminal epoxide indicates the preference of the reaction pathway when photocatalyzed by zinc salen. We anticipate that this strategy will help to design new photocatalysts for CO2 fixation.
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Affiliation(s)
- Prakash Nayak
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), an OCC of Homi Bhaba National Institute, Bhubaneswar 752050, Odisha, India
| | - Anna Chandrasekar Murali
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), an OCC of Homi Bhaba National Institute, Bhubaneswar 752050, Odisha, India
| | - Pradeep Kumar Pal
- International Institute of Information Technology, Hyderabad 500 032, India
| | - U Deva Priyakumar
- International Institute of Information Technology, Hyderabad 500 032, India
| | - Vadapalli Chandrasekhar
- Tata Institute of Fundamental Research Hyderabad, Gopanpally, Hyderabad 500 046, India.,Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Krishnan Venkatasubbaiah
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), an OCC of Homi Bhaba National Institute, Bhubaneswar 752050, Odisha, India
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6
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Rej S, Chatani N. Regio‐Selective Transition‐Metal‐Free C(sp2)‒H Borylation: A Subject of Practical and Ongoing Interest in Synthetic Organic Chemistry. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202209539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Supriya Rej
- Osaka University School of Engineering Graduate School of Engineering: Osaka Daigaku Kogakubu Daigakuin Kogaku Kenkyuka Applied Chemistry JAPAN
| | - Naoto Chatani
- Osaka University School of Engineering Graduate School of Engineering: Osaka Daigaku Kogakubu Daigakuin Kogaku Kenkyuka Applied Chemistry 2-1 Yamadaoka 566-0871 Suita, Osaka JAPAN
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7
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Mukundam V, Sa S, Kumari A, Ponduru TT, Das R, Venkatasubbaiah K. Synthesis, photophysical, electrochemical, and non-linear optical properties of triaryl pyrazole based B-N coordinated boron compounds. Chem Asian J 2022; 17:e202200291. [PMID: 35452174 DOI: 10.1002/asia.202200291] [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: 03/22/2022] [Revised: 04/19/2022] [Indexed: 11/10/2022]
Abstract
We report here a set of triaryl pyrazole based B-N coordinated boron compounds ( 11 - 17 ) synthesized by electrophilic aromatic borylation strategy. All the pyrazole boron compounds were thoroughly characterized using multinuclear NMR spectroscopy, LCMS, and single crystal X-ray diffraction analysis (for 12 - 17 ). The photoluminescence measurements of 11 - 17 revealed that the emission peak maxima were tuned based on the substitution on Nphenyl. The photophysical and electrochemical properties were further supported by theoretical calculations. Z-scan based investigations at 515 nm pump wavelength showed that B-N coordination led to enhancement of nonlinear absorption (two-photon absorption (TPA)) in these compounds if an electron deficient moiety is attached. It has also been observed that an appropriate choice of moiety allows to optimally maneuver the molecular polarizability of the π-system and consequently, assists in controlling the third-order nonlinear optical response.
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Affiliation(s)
- Vanga Mukundam
- National Institute of Science Education and Research, School of Chemical Sciences, INDIA
| | - Shreenibasa Sa
- National Institute of Science Education and Research, School of Chemical Sciences, INDIA
| | - Anupa Kumari
- National Institute of Science Education and Research, School of Physical Sciences, INDIA
| | - Tharun Teja Ponduru
- National Institute of Science Education and Research, School of Chemical Sciences, INDIA
| | - Ritwick Das
- National Institute of Science Education and Research, School of Physical Sciences, INDIA
| | - Krishnan Venkatasubbaiah
- National Institute of Science Education and Research, School of Chemical Sciences, NISER, 752050, Bhubaneswar, INDIA
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8
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Wu G, Xu X, Wang S, Chen L, Pang B, Ma T, Ji Y. Metal-free directed C−H borylation of 2-(N-methylanilino)-5-fluoropyridines and 2-benzyl-5-fluoropyridines. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.09.081] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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9
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Yamazaki K, Rej S, Ano Y, Chatani N. Origin of the Enhanced Reactivity in the ortho C-H Borylation of Benzaldehydes with BBr 3. Org Lett 2021; 24:213-217. [PMID: 34939820 DOI: 10.1021/acs.orglett.1c03829] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The metal-free ortho C-H borylation of benzaldehyde derivatives using a transient imine directing group was recently developed by our group, providing an efficient strategy for the synthesis of organoboron reagents. Herein, we report on an extensive investigation of the reaction mechanism using density functional theory (DFT) calculations. Computations for the reaction pathway with various imine substrates, as well as the effect of an added base were examined, and the experimentally observed reactivity enhancement is proposed to originate from the tunability of the destabilizing strain energies that results in a reversible complexation process with BBr3.
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Affiliation(s)
- Ken Yamazaki
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Supriya Rej
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Yusuke Ano
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Naoto Chatani
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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10
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Rej S, Das A, Chatani N. Pyrimidine-directed metal-free C-H borylation of 2-pyrimidylanilines: a useful process for tetra-coordinated triarylborane synthesis. Chem Sci 2021; 12:11447-11454. [PMID: 34567499 PMCID: PMC8409464 DOI: 10.1039/d1sc02937a] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 07/22/2021] [Indexed: 12/15/2022] Open
Abstract
Convenient, easily handled, laboratory friendly, robust approaches to afford synthetically important organoboron compounds are currently of great interest to researchers. Among the various available strategies, a metal-free approach would be overwhelmingly accepted, since the target boron compounds can be prepared in a metal-free state. We herein present a detailed study of the metal-free directed ortho-C–H borylation of 2-pyrimidylaniline derivatives. The approach allowed us to synthesize various boronates, which are synthetically important compounds and various four-coordinated triarylborane derivatives, which could be useful in materials science as well as Lewis-acid catalysts. This metal-free directed C–H borylation reaction proceeds smoothly without any interference by external impurities, such as inorganic salts, reactive functionalities, heterocycles and even transition metal precursors, which further enhance its importance. We present the metal-free ortho-C–H borylation of 2-pyrimidylanilines to afford synthetically important boronic esters and tetra-coordinated triarylboranes, which could be useful in materials science as well as Lewis-acid catalysts.![]()
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Affiliation(s)
- Supriya Rej
- Department of Applied Chemistry, Faculty of Engineering, Osaka University Suita Osaka 5650871 Japan
| | - Amrita Das
- Department of Applied Chemistry, Faculty of Engineering, Osaka University Suita Osaka 5650871 Japan
| | - Naoto Chatani
- Department of Applied Chemistry, Faculty of Engineering, Osaka University Suita Osaka 5650871 Japan
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11
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Rej S, Chatani N. Transient Imine as a Directing Group for the Metal-Free o-C-H Borylation of Benzaldehydes. J Am Chem Soc 2021; 143:2920-2929. [PMID: 33586953 DOI: 10.1021/jacs.0c13013] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Organoboron reagents are important synthetic intermediates and have wide applications in synthetic organic chemistry. The selective borylation strategies that are currently in use largely rely on the use of transition-metal catalysts. Hence, identifying much milder conditions for transition-metal-free borylation would be highly desirable. We herein present a unified strategy for the selective C-H borylation of electron-deficient benzaldehyde derivatives using a simple metal-free approach, utilizing an imine transient directing group. The strategy covers a wide spectrum of reactions and (i) even highly sterically hindered C-H bonds can be borylated smoothly, (ii) despite the presence of other potential directing groups, the reaction selectively occurs at the o-C-H bond of the benzaldehyde moiety, and (iii) natural products appended to benzaldehyde derivatives can also give the appropriate borylated products. Moreover, the efficacy of the protocol was confirmed by the fact that the reaction proceeds even in the presence of a series of external impurities.
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Affiliation(s)
- Supriya Rej
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Naoto Chatani
- Department of Applied Chemistry, Faculty of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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12
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Maliszewsk Paczkowski I, Lange Coelho F, Franciscato Campo L. 2,1,3-Benzothiadiazole dyes conjugated with benzothiazole and benzoxazole: Synthesis, solvatochromism and solid-state properties. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114277] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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13
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Haque A, Al-Balushi RA, Raithby PR, Khan MS. Recent Advances in π-Conjugated N^C-Chelate Organoboron Materials. Molecules 2020; 25:E2645. [PMID: 32517244 PMCID: PMC7321365 DOI: 10.3390/molecules25112645] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 06/03/2020] [Accepted: 06/04/2020] [Indexed: 11/17/2022] Open
Abstract
Boron-containing π-conjugated materials are archetypical candidates for a variety of molecular scale applications. The incorporation of boron into the π-conjugated frameworks significantly modifies the nature of the parent π-conjugated systems. Several novel boron-bridged π-conjugated materials with intriguing structural, photo-physical and electrochemical properties have been reported over the last few years. In this paper, we review the properties and multi-dimensional applications of the boron-bridged fused-ring π-conjugated systems. We critically highlight the properties of π-conjugated N^C-chelate organoboron materials. This is followed by a discussion on the potential applications of the new materials in opto-electronics (O-E) and other areas. Finally, attempts will be made to predict the future direction/outlook for this class of materials.
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Affiliation(s)
- Ashanul Haque
- Department of Chemistry, College of Science, University of Hail, Ha’il 81451, Saudi Arabia
| | - Rayya A. Al-Balushi
- Department of Basic Sciences, College of Applied and Health Sciences, A’Sharqiyah University, P.O. Box 42, Ibra 400, Sultanate of Oman;
| | - Paul R. Raithby
- Department of Chemistry, University of Bath, Claverton Down BA2 7AY, UK
| | - Muhammad S. Khan
- Department of Chemistry, Sultan Qaboos University, P.O. Box 36, Al-Khod 123, Sultanate of Oman
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14
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Suresh SM, Duda E, Hall D, Yao Z, Bagnich S, Slawin AMZ, Bässler H, Beljonne D, Buck M, Olivier Y, Köhler A, Zysman-Colman E. A Deep Blue B,N-Doped Heptacene Emitter That Shows Both Thermally Activated Delayed Fluorescence and Delayed Fluorescence by Triplet–Triplet Annihilation. J Am Chem Soc 2020; 142:6588-6599. [DOI: 10.1021/jacs.9b13704] [Citation(s) in RCA: 106] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Subeesh Madayanad Suresh
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews, U.K. KY16 9ST
| | - Eimantas Duda
- Soft Matter Optoelectronics, University of Bayreuth, Universitätsstraße 30, 95447 Bayreuth, Germany
| | - David Hall
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews, U.K. KY16 9ST
- Laboratory for Chemistry of Novel Materials, University of Mons, 7000 Mons, Belgium
| | - Zhen Yao
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews, U.K. KY16 9ST
| | - Sergey Bagnich
- Soft Matter Optoelectronics, University of Bayreuth, Universitätsstraße 30, 95447 Bayreuth, Germany
| | - Alexandra M. Z. Slawin
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews, U.K. KY16 9ST
| | - Heinz Bässler
- BIMF, University of Bayreuth, 95447 Bayreuth, Germany
| | - David Beljonne
- Laboratory for Chemistry of Novel Materials, University of Mons, 7000 Mons, Belgium
| | - Manfred Buck
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews, U.K. KY16 9ST
| | - Yoann Olivier
- Laboratory for Chemistry of Novel Materials, University of Mons, 7000 Mons, Belgium
- Unité de Chimie Physique Théorique et Structurale & Laboratoire de Physique du Solide, Namur Institute of Structured Matter, Université de Namur, Rue de Bruxelles, 61, 5000 Namur, Belgium
| | - Anna Köhler
- Soft Matter Optoelectronics, University of Bayreuth, Universitätsstraße 30, 95447 Bayreuth, Germany
| | - Eli Zysman-Colman
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews, U.K. KY16 9ST
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15
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Vanga M, Lalancette RA, Jäkle F. Controlling the Optoelectronic Properties of Pyrene by Regioselective Lewis Base‐Directed Electrophilic Aromatic Borylation. Chemistry 2019; 25:10133-10140. [DOI: 10.1002/chem.201901231] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Mukundam Vanga
- Department of Chemistry Rutgers University-Newark 73 Warren Street Newark NJ 07102 USA
| | - Roger A. Lalancette
- Department of Chemistry Rutgers University-Newark 73 Warren Street Newark NJ 07102 USA
| | - Frieder Jäkle
- Department of Chemistry Rutgers University-Newark 73 Warren Street Newark NJ 07102 USA
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16
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Liu K, Lalancette RA, Jäkle F. Tuning the Structure and Electronic Properties of B–N Fused Dipyridylanthracene and Implications on the Self-Sensitized Reactivity with Singlet Oxygen. J Am Chem Soc 2019; 141:7453-7462. [DOI: 10.1021/jacs.9b01958] [Citation(s) in RCA: 65] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Kanglei Liu
- Department of Chemistry, Rutgers University−Newark, 73 Warren Street, Newark, New Jersey 07102, United States
| | - Roger A. Lalancette
- Department of Chemistry, Rutgers University−Newark, 73 Warren Street, Newark, New Jersey 07102, United States
| | - Frieder Jäkle
- Department of Chemistry, Rutgers University−Newark, 73 Warren Street, Newark, New Jersey 07102, United States
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17
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Grandl M, Schepper J, Maity S, Peukert A, von Hauff E, Pammer F. N → B Ladder Polymers Prepared by Postfunctionalization: Tuning of Electron Affinity and Evaluation as Acceptors in All-Polymer Solar Cells. Macromolecules 2019. [DOI: 10.1021/acs.macromol.8b02595] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Markus Grandl
- Wacker Chemie
AG, Johannes-Hess-Strasse 24, 84489 Burghausen, Germany
| | - Jonas Schepper
- Institute of Organic Chemistry II and Advanced Materials, University of Ulm, Albert-Einstein-Allee 11, D-89081 Ulm, Germany
| | - Sudeshna Maity
- Department of Physics and Astronomy, Vrije Universiteit Amsterdam, De Boelelaan 1081, NL-1081 HV Amsterdam, Netherlands
| | - Andreas Peukert
- Department of Physics and Astronomy, Vrije Universiteit Amsterdam, De Boelelaan 1081, NL-1081 HV Amsterdam, Netherlands
| | - Elizabeth von Hauff
- Department of Physics and Astronomy, Vrije Universiteit Amsterdam, De Boelelaan 1081, NL-1081 HV Amsterdam, Netherlands
| | - Frank Pammer
- Institute of Organic Chemistry II and Advanced Materials, University of Ulm, Albert-Einstein-Allee 11, D-89081 Ulm, Germany
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18
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Pammer F, Schepper J, Glöckler J, Sun Y, Orthaber A. Expansion of the scope of alkylboryl-bridged N → B-ladder boranes: new substituents and alternative substrates. Dalton Trans 2019; 48:10298-10312. [DOI: 10.1039/c9dt01555h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A series of new boranes capable of forming intramolecular N → B-heterocycles has been prepared and their properties have been studied by electrochemical methods and UV-vis-spectroscopy complemented by DFT calculations.
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Affiliation(s)
- Frank Pammer
- Institute of Organic Chemistry II and Advanced Materials
- University of Ulm
- 89081 Ulm
- Germany
| | - Jonas Schepper
- Institute of Organic Chemistry II and Advanced Materials
- University of Ulm
- 89081 Ulm
- Germany
| | - Johannes Glöckler
- Institut of Analytical and Bioanalytical Chemistry
- University of Ulm
- 89081 Ulm
- Germany
| | - Yu Sun
- Fachbereich Chemie
- Technische Universität Kaiserslautern
- D-67663 Kaiserslautern
- Germany
| | - Andreas Orthaber
- Department of Chemistry – Ångström laboratories
- Uppsala University
- 75120 Uppsala
- Sweden
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19
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Nakatsuka S, Yasuda N, Hatakeyama T. Four-Step Synthesis of B2N2-Embedded Corannulene. J Am Chem Soc 2018; 140:13562-13565. [DOI: 10.1021/jacs.8b08197] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Soichiro Nakatsuka
- Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Nobuhiro Yasuda
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Takuji Hatakeyama
- Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
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20
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Grandl M, Sun Y, Pammer F. Electronic and structural properties of N → B-ladder boranes with high electron affinity. Org Chem Front 2018. [DOI: 10.1039/c7qo00876g] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A series of electronically and structurally diverse N → B-ladder boranes has been prepared by hydroboration.
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Affiliation(s)
| | - Yu Sun
- Fachbereich Chemie
- Technische Universität Kaiserslautern
- 67663 Kaiserslautern
- Germany
| | - Frank Pammer
- Institute of Organic Chemistry II and Advanced Materials
- University of Ulm
- 89081 Ulm
- Germany
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21
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Matsui K, Oda S, Yoshiura K, Nakajima K, Yasuda N, Hatakeyama T. One-Shot Multiple Borylation toward BN-Doped Nanographenes. J Am Chem Soc 2017; 140:1195-1198. [DOI: 10.1021/jacs.7b10578] [Citation(s) in RCA: 259] [Impact Index Per Article: 37.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Kohei Matsui
- Department
of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Susumu Oda
- Department
of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Kazuki Yoshiura
- Department
of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Kiichi Nakajima
- Department
of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Nobuhiro Yasuda
- Japan Synchrotron Radiation Research Institute (JASRI), 1-1-1, Kouto, Sayo-cho, Sayo-gun, Hyogo 679-5198, Japan
| | - Takuji Hatakeyama
- Department
of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
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22
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Crossley DL, Urbano L, Neumann R, Bourke S, Jones J, Dailey LA, Green M, Humphries MJ, King SM, Turner ML, Ingleson MJ. Post-polymerization C-H Borylation of Donor-Acceptor Materials Gives Highly Efficient Solid State Near-Infrared Emitters for Near-IR-OLEDs and Effective Biological Imaging. ACS APPLIED MATERIALS & INTERFACES 2017; 9:28243-28249. [PMID: 28783304 DOI: 10.1021/acsami.7b08473] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Post-polymerization modification of the donor-acceptor polymer, poly(9,9-dioctylfluorene-alt-benzothiadiazole), PF8-BT, by electrophilic C-H borylation is a simple method to introduce controllable quantities of near-infrared (near-IR) emitting chromophore units into the backbone of a conjugated polymer. The highly stable borylated unit possesses a significantly lower LUMO energy than the pristine polymer resulting in a reduction in the band gap of the polymer by up to 0.63 eV and a red shift in emission of more than 150 nm. Extensively borylated polymers absorb strongly in the deep red/near-IR and are highly emissive in the near-IR region of the spectrum in solution and solid state. Photoluminescence quantum yield (PLQY) values are extremely high in the solid state for materials with emission maxima ≥ 700 nm with PLQY values of 44% at 700 nm and 11% at 757 nm for PF8-BT with different borylation levels. This high brightness enables efficient solution processed near-IR emitting OLEDs to be fabricated and highly emissive borylated polymer loaded conjugated polymer nanoparticles (CPNPs) to be prepared. The latter are bright, photostable, low toxicity bioimaging agents that in phantom mouse studies show higher signal to background ratios for emission at 820 nm than the ubiquitous near-IR emissive bioimaging agent indocyanine green. This methodology represents a general approach for the post-polymerization functionalization of donor-acceptor polymers to reduce the band gap as confirmed by the C-H borylation of poly((9,9-dioctylfluorene)-2,7-diyl-alt-[4,7-bis(3-hexylthien-5-yl)-2,1,3-benzothiadiazole]-2c,2cc-diyl) (PF8TBT) resulting in a red shift in emission of >150 nm, thereby shifting the emission maximum to 810 nm.
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Affiliation(s)
- Daniel L Crossley
- School of Chemistry, University of Manchester , Manchester M13 9PL, United Kingdom
| | - Laura Urbano
- Institute of Pharmaceutical Sciences, King's College London , Waterloo Campus, London SE1 9NH, United Kingdom
| | - Robert Neumann
- Institute of Pharmacy, Martin-Luther University Halle-Wittenberg , Wolfgang-Langenbeck-Strasse 4, 06120 Halle, Saale, Germany
| | - Struan Bourke
- Department of Physics, King's College London , Strand Campus, London WC2R 2LS, United Kingdom
| | - Jennifer Jones
- School of Chemistry, University of Manchester , Manchester M13 9PL, United Kingdom
| | - Lea Ann Dailey
- Institute of Pharmacy, Martin-Luther University Halle-Wittenberg , Wolfgang-Langenbeck-Strasse 4, 06120 Halle, Saale, Germany
| | - Mark Green
- Department of Physics, King's College London , Strand Campus, London WC2R 2LS, United Kingdom
| | - Martin J Humphries
- Cambridge Display Technology Ltd. (Company Number 02672530), Unit 12, Cardinal Park, Cardinal Way, Godmanchester PE29 2XG, United Kingdom
| | - Simon M King
- Cambridge Display Technology Ltd. (Company Number 02672530), Unit 12, Cardinal Park, Cardinal Way, Godmanchester PE29 2XG, United Kingdom
| | - Michael L Turner
- School of Chemistry, University of Manchester , Manchester M13 9PL, United Kingdom
| | - Michael J Ingleson
- School of Chemistry, University of Manchester , Manchester M13 9PL, United Kingdom
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23
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Hecht R, Kade J, Schmidt D, Nowak-Król A. n-Channel Organic Semiconductors Derived from Air-Stable Four-Coordinate Boron Complexes of Substituted Thienylthiazoles. Chemistry 2017; 23:11620-11628. [DOI: 10.1002/chem.201701922] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2017] [Indexed: 02/04/2023]
Affiliation(s)
- Reinhard Hecht
- Center for Nanosystems Chemistry (CNC) and Bavarian Polymer Institute (BPI); Universität Würzburg; Theodor-Boveri-Weg 97074 Würzburg Germany
- Institut für Organische Chemie; Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - Juliane Kade
- Institut für Organische Chemie; Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - David Schmidt
- Center for Nanosystems Chemistry (CNC) and Bavarian Polymer Institute (BPI); Universität Würzburg; Theodor-Boveri-Weg 97074 Würzburg Germany
- Institut für Organische Chemie; Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - Agnieszka Nowak-Król
- Center for Nanosystems Chemistry (CNC) and Bavarian Polymer Institute (BPI); Universität Würzburg; Theodor-Boveri-Weg 97074 Würzburg Germany
- Institut für Organische Chemie; Universität Würzburg; Am Hubland 97074 Würzburg Germany
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24
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Mukundam V, Dhanunjayarao K, Samal S, Venkatasubbaiah K. Variation ofparaSubstituent on 2-Phenol of Tetraaryl-Substituted Imidazole-Boron Difluoride Complexes: Synthesis, Characterization, and Photophysical Properties. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700234] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
- Vanga Mukundam
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI; Bhubaneswar- 752050 Orissa India
| | - Kunchala Dhanunjayarao
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI; Bhubaneswar- 752050 Orissa India
| | - Sanket Samal
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI; Bhubaneswar- 752050 Orissa India
| | - Krishnan Venkatasubbaiah
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI; Bhubaneswar- 752050 Orissa India
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25
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Crossley DL, Goh R, Cid J, Vitorica-Yrezabal I, Turner ML, Ingleson MJ. Borylated Arylamine–Benzothiadiazole Donor–Acceptor Materials as Low-LUMO, Low-Band-Gap Chromophores. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00188] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Daniel L. Crossley
- School of Chemistry, University of Manchester, Manchester M13 9PL, United Kingdom
| | - Rosanne Goh
- School of Chemistry, University of Manchester, Manchester M13 9PL, United Kingdom
| | - Jessica Cid
- School of Chemistry, University of Manchester, Manchester M13 9PL, United Kingdom
| | | | - Michael L. Turner
- School of Chemistry, University of Manchester, Manchester M13 9PL, United Kingdom
| | - Michael J. Ingleson
- School of Chemistry, University of Manchester, Manchester M13 9PL, United Kingdom
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26
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Creamer A, Casey A, Marsh AV, Shahid M, Gao M, Heeney M. Systematic Tuning of 2,1,3-Benzothiadiazole Acceptor Strength by Monofunctionalization with Alkylamine, Thioalkyl, or Alkoxy Groups in Carbazole Donor–Acceptor Polymers. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00235] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Adam Creamer
- Department
of Chemistry and Centre for Plastic Electronics, Imperial College London, London SW7 2AZ, U.K
| | - Abby Casey
- Department
of Chemistry and Centre for Plastic Electronics, Imperial College London, London SW7 2AZ, U.K
| | - Adam V. Marsh
- Department
of Chemistry and Centre for Plastic Electronics, Imperial College London, London SW7 2AZ, U.K
| | - Munazza Shahid
- Department
of Chemistry and Centre for Plastic Electronics, Imperial College London, London SW7 2AZ, U.K
| | - Mei Gao
- CSIRO Manufacturing, Private Bag 10, Clayton South, Victoria 3169, Australia
| | - Martin Heeney
- Department
of Chemistry and Centre for Plastic Electronics, Imperial College London, London SW7 2AZ, U.K
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27
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Shimogawa H, Yoshikawa O, Aramaki Y, Murata M, Wakamiya A, Murata Y. 4,7-Bis[3-(dimesitylboryl)thien-2-yl]benzothiadiazole: Solvato-, Thermo-, and Mechanochromism Based on the Reversible Formation of an Intramolecular B-N Bond. Chemistry 2017; 23:3784-3791. [PMID: 28066965 DOI: 10.1002/chem.201606041] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Indexed: 12/12/2022]
Abstract
4,7-Bis-[3-(dimesitylboryl)thien-2-yl]benzothiadiazole (1) and monoborylated derivative 2 were synthesized and their chromic behavior was investigated. Photophysical measurements, single-crystal XRD analysis, and theoretical calculations revealed that an intramolecular B-N coordination bond formed reversibly. The equilibrium of this reversible bond formation depends on the solid-state structure, solvent, temperature, and mechanical forces, and leads to significant changes in the electronic structure and chromic behavior of these molecules. The responsiveness toward external stimuli, resulting in the reversible formation of open and closed forms of this system, is achieved through weak intramolecular B-N coordination bonds induced by the steric bulk of the mesityl groups on the boron centers.
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Affiliation(s)
- Hiroyuki Shimogawa
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, 611-0011, Japan
| | - Osamu Yoshikawa
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, 611-0011, Japan
| | - Yoshitaka Aramaki
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, 611-0011, Japan
| | - Michihisa Murata
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, 611-0011, Japan
| | - Atsushi Wakamiya
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, 611-0011, Japan.,Precursory Research for Embryonic Science and Technology (PRESTO), Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama, 332-0012, Japan
| | - Yasujiro Murata
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto, 611-0011, Japan
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28
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Grandl M, Rudolf B, Sun Y, Bechtel DF, Pierik AJ, Pammer F. Intramolecular N→B Coordination as a Stabilizing Scaffold for π-Conjugated Radical Anions with Tunable Redox Potentials. Organometallics 2017. [DOI: 10.1021/acs.organomet.6b00916] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Markus Grandl
- Institute
of Organic Chemistry II and Advanced Materials, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Benjamin Rudolf
- Institute
of Organic Chemistry II and Advanced Materials, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
| | - Yu Sun
- Fachbereich
Chemie, Technische Universität Kaiserslautern, Erwin-Schrödinger-Strasse
54, 67663 Kaiserslautern, Germany
| | - Dominique F. Bechtel
- Fachbereich
Chemie, Technische Universität Kaiserslautern, Erwin-Schrödinger-Strasse
54, 67663 Kaiserslautern, Germany
| | - Antonio J. Pierik
- Fachbereich
Chemie, Technische Universität Kaiserslautern, Erwin-Schrödinger-Strasse
54, 67663 Kaiserslautern, Germany
| | - Frank Pammer
- Institute
of Organic Chemistry II and Advanced Materials, Ulm University, Albert-Einstein-Allee 11, 89081 Ulm, Germany
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29
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Cortizo-Lacalle D, Pertegás A, Melle-Franco M, Bolink HJ, Mateo-Alonso A. Pyrene-fused bisphenazinothiadiazoles with red to NIR electroluminescence. Org Chem Front 2017. [DOI: 10.1039/c7qo00227k] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Deep red and NIR electroluminescence from pyrene-fused bisphenazinothiadiazoles.
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Affiliation(s)
| | - Antonio Pertegás
- Instituto de Ciencia Molecular
- Universidad de Valencia
- 46980 Paterna
- Spain
| | - Manuel Melle-Franco
- CICECO – Aveiro Institute of Materials
- Department of Chemistry
- University of Aveiro
- 3810-193 Aveiro
- Portugal
| | - Henk J. Bolink
- Instituto de Ciencia Molecular
- Universidad de Valencia
- 46980 Paterna
- Spain
| | - Aurelio Mateo-Alonso
- POLYMAT
- University of the Basque Country UPV/EHU
- E-20018 Donostia-San Sebastian
- Spain
- Ikerbasque
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30
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Crossley DL, Vitorica-Yrezabal I, Humphries MJ, Turner ML, Ingleson MJ. Highly Emissive Far Red/Near-IR Fluorophores Based on Borylated Fluorene-Benzothiadiazole Donor-Acceptor Materials. Chemistry 2016; 22:12439-48. [PMID: 27460768 PMCID: PMC6680280 DOI: 10.1002/chem.201602010] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Indexed: 01/25/2023]
Abstract
Stille, Suzuki-Miyaura and Negishi cross-coupling reactions of bromine-functionalised borylated precursors enable the facile, high yielding, synthesis of borylated donor-acceptor materials that contain electron-rich aromatic units and/or extended effective conjugation lengths. These materials have large Stokes shifts, low LUMO energies, small band-gaps and significant fluorescence emission >700 nm in solution and when dispersed in a host polymer.
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Affiliation(s)
- Daniel L Crossley
- School of Chemistry, University of Manchester, Manchester, M13 9PL, UK
| | | | - Martin J Humphries
- Cambridge Display Technology Ltd. (Company Number 02672530) Unit 12, Cardinal Park, Cardinal Way, Godmanchester, PE29 2XG, UK
| | - Michael L Turner
- School of Chemistry, University of Manchester, Manchester, M13 9PL, UK.
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