1
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Hollister KK, Molino A, Le VV, Jones N, Smith WJ, Müller P, Dickie DA, Wilson DJD, Gilliard RJ. Pentacyclic fused diborepinium ions with carbene- and carbone-mediated deep-blue to red emission. Chem Sci 2024:d4sc03835e. [PMID: 39156927 PMCID: PMC11325318 DOI: 10.1039/d4sc03835e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2024] [Accepted: 08/03/2024] [Indexed: 08/20/2024] Open
Abstract
Designing molecules that can undergo late-stage modifications resulting in specific optical properties is useful for developing structure-function trends in materials, which ultimately advance optoelectronic applications. Herein, we report a series of fused diborepinium ions stabilized by carbene and carbone ligands (diamino-N-heterocyclic carbenes, cyclic(alkyl)(amino) carbenes, carbodicarbenes, and carbodiphosphoranes), including a detailed bonding analysis. These are the first structurally confirmed examples of diborepin dications and we detail how distortions in the core of the pentacyclic fused system impact aromaticity, stability, and their light-emitting properties. Using the same fused diborepin scaffold, coordinating ligands were used to dramatically shift the emission profile, which exhibit colors ranging from blue to red (358-643 nm). Notably, these diborepinium ions access expanded regions of the visible spectrum compared to known examples of borepins, with quantum yields up to 60%. Carbones were determined to be superior stabilizing ligands, resulting in improved stability in the solution and solid states. Density functional theory was used to provide insight into the bonding as well as the specific transitions that result in the observed photophysical properties.
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Affiliation(s)
- Kimberly K Hollister
- Department of Chemistry, Massachusetts Institute of Technology 77 Massachusetts Avenue, Building 18-596 Cambridge MA 02139-4307 USA
| | - Andrew Molino
- Department of Chemistry, Massachusetts Institute of Technology 77 Massachusetts Avenue, Building 18-596 Cambridge MA 02139-4307 USA
- Department of Chemistry, La Trobe Institute for Molecular Science, La Trobe University Melbourne 3086 Victoria Australia
| | - VuongVy V Le
- Department of Chemistry, University of Virginia Charlottesville Virginia 22904 USA
| | - Nula Jones
- Department of Chemistry, University of Virginia Charlottesville Virginia 22904 USA
| | - Wyatt J Smith
- Department of Chemistry, University of Virginia Charlottesville Virginia 22904 USA
| | - Peter Müller
- Department of Chemistry, Massachusetts Institute of Technology 77 Massachusetts Avenue, Building 18-596 Cambridge MA 02139-4307 USA
| | - Diane A Dickie
- Department of Chemistry, University of Virginia Charlottesville Virginia 22904 USA
| | - David J D Wilson
- Department of Chemistry, La Trobe Institute for Molecular Science, La Trobe University Melbourne 3086 Victoria Australia
| | - Robert J Gilliard
- Department of Chemistry, Massachusetts Institute of Technology 77 Massachusetts Avenue, Building 18-596 Cambridge MA 02139-4307 USA
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2
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Schepper J, Orthaber A, Pammer F. Tetrazole-Functionalized Organoboranes Exhibiting Dynamic Intramolecular N→B-Coordination and Cyanide-Selective Anion Binding. Chemistry 2024; 30:e202401466. [PMID: 38708576 DOI: 10.1002/chem.202401466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2024] [Revised: 04/25/2024] [Accepted: 04/25/2024] [Indexed: 05/07/2024]
Abstract
Starting from two different cyano-functionalized organoboranes, we demonstrate that 1,3-dipolar [3+2] azide-nitrile cycloaddition can serve to generate libraries of alkyl-tetrazole-functionalized compounds capable of intramolecular N→B-Lewis adduct formation. Due to the relatively low basicity of tetrazoles, structures can be generated that exhibit weak and labile N→B-coordination. The reaction furnishes 1- and 2-alkylated regio-isomers that exhibit different effective Lewis-acidities at the boron centers, and vary in their optical absorption and fluorescence properties. Indeed, we identified derivatives capable of selectively binding cyanide over fluoride, as confirmed by 11B NMR. This finding demonstrates the potentialities of this synthetic strategy to systematically fine-tune the properties of lead structures that are of interest as chemical sensors.
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Affiliation(s)
- Jonas Schepper
- Institute of Organic Chemistry II and Advanced Materials, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Andreas Orthaber
- Department of Chemistry - Ångström laboratories, Uppsala University, BOX 523, 75120, Uppsala, Sweden
| | - Frank Pammer
- Helmholtz Institute Ulm, Karlsruhe Institute for Technology, Helmholtzstrasse 11, 89081, Ulm, Germany
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3
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Adachi Y, Kurihara M, Yamada K, Arai F, Hattori Y, Yamana K, Kawasaki R, Ohshita J. Insights into mechanistic interpretation of crystalline-state reddish phosphorescence of non-planar π-conjugated organoboron compounds. Chem Sci 2024; 15:8127-8136. [PMID: 38817577 PMCID: PMC11134383 DOI: 10.1039/d4sc01184h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Accepted: 04/20/2024] [Indexed: 06/01/2024] Open
Abstract
Metal-free room-temperature phosphorescent (RTP) materials are attracting attention in such applications as organic light-emitting diodes and bioimaging. However, the chemical structures of RTP materials reported thus far are mostly predominantly based on π-conjugated systems incorporating heavy atoms such as bromine atoms or carbonyl groups, resulting in limited structural diversity. On the other hand, triarylboranes are known for their strong Lewis acidity and deep LUMO energy levels, but few studies have reported on their RTP properties. In this study, we discovered that compounds based on a tetracyclic structure containing boron, referred to as benzo[d]dithieno[b,f]borepins, exhibit strong solid-state reddish phosphorescence even in air. Quantum chemical calculations, including those for model compounds, revealed that the loss of planarity of the tetracyclic structure increases spin-orbit coupling matrix elements, thereby accelerating the intersystem crossing process. Moreover, single-crystal X-ray structural analysis and natural energy decomposition analysis suggested that the borepin compounds without bromine or oxygen atoms, unlike typical RTP materials, exhibit red-shifted phosphorescence in the crystalline state owing to structural relaxation in the T1 state. Additionally, the borepin compounds showed potential application as bioimaging dyes.
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Affiliation(s)
- Yohei Adachi
- Smart Innovation Program, Graduate School of Advanced Science and Engineering, Hiroshima University Higashi-Hiroshima 739-8527 Japan
| | - Maho Kurihara
- Smart Innovation Program, Graduate School of Advanced Science and Engineering, Hiroshima University Higashi-Hiroshima 739-8527 Japan
| | - Kohei Yamada
- Smart Innovation Program, Graduate School of Advanced Science and Engineering, Hiroshima University Higashi-Hiroshima 739-8527 Japan
| | - Fuka Arai
- Smart Innovation Program, Graduate School of Advanced Science and Engineering, Hiroshima University Higashi-Hiroshima 739-8527 Japan
| | - Yuto Hattori
- Smart Innovation Program, Graduate School of Advanced Science and Engineering, Hiroshima University Higashi-Hiroshima 739-8527 Japan
| | - Keita Yamana
- Applied Chemistry Program, Graduate School of Advanced Science and Engineering, Hiroshima University Higashi-Hiroshima 739-8527 Japan
| | - Riku Kawasaki
- Applied Chemistry Program, Graduate School of Advanced Science and Engineering, Hiroshima University Higashi-Hiroshima 739-8527 Japan
| | - Joji Ohshita
- Smart Innovation Program, Graduate School of Advanced Science and Engineering, Hiroshima University Higashi-Hiroshima 739-8527 Japan
- Division of Materials Model-Based Research, Digital Monozukuri (Manufacturing) Education and Research Center, Hiroshima University Higashi-Hiroshima Hiroshima 739-0046 Japan
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4
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Liu TT, Cui YS. One-Pot Access to Boron-Doped Fused Heterocycles via Domino Cyclization of Bis-Diazidoboranes with Isonitrile. Chemistry 2023; 29:e202302683. [PMID: 37753737 DOI: 10.1002/chem.202302683] [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: 08/16/2023] [Revised: 09/20/2023] [Accepted: 09/21/2023] [Indexed: 09/28/2023]
Abstract
Boron-doped fused heterocycles have shown great potential in the field of functional materials. This study reports on the synthesis of a new class of bis-diazidoboranes and the discovery of their cycloaddition reaction with isonitriles. Triply fused boron-doped heterocyclic compounds were constructed in a one-pot process through a domino cycloaddition, providing an effective route for constructing complex boron-doped heterocyclic systems.
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Affiliation(s)
- Tong-Tong Liu
- Department of Chemistry, Fudan University, Shanghai, 200438, China
| | - Yun-Shu Cui
- Department of Chemistry, Fudan University, Shanghai, 200438, China
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5
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Li X, Liu Z, Li C, Gao R, Qi Y, Ren Y. Synthesis and Photophysical Properties of Carbazole-Functionalized Diazaphosphepines via Sequent P-N Chemistry. J Org Chem 2023; 88:13678-13685. [PMID: 37691267 DOI: 10.1021/acs.joc.3c01351] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
Chemical structure tunability of organic π-conjugated molecules (OCMs) is highly appealing for fine-tuning the optoelectronic properties. Herein, we report a new series of carbazole-functionalized diazaphosphepines (DPP-CBZs) via one-pot phosphorus-nitrogen (P-N) chemistry. The one-pot synthesis harnessed the mild and selective P-N chemistry that successively installed carbazole moieties and seven-membered heterocycles at one P-center. Single-crystal structure studies revealed the tweezer-like structures for 1PO, 2PO, and 3PO that maintained the intramolecular donor-acceptor interactions between [d]-aryl moieties and carbazole. DPP-CBZs exhibited a more twisted central-diazaphosphepine ring compared with the reference molecules (1-3MO without carbazole group). DPP-CBZs with strong electron-accepting [d]-Ars generally showed lower photoluminescence quantum yields (PLQYs) than those of the reference molecules, which is probably due to the intramolecular charge transfer (ICT) from electron-donating carbazole to electron-withdrawing [d]-Ars. Upon the oxidation of the P-centers, PLQYs of DPP-CBZs increased. Furthermore, photophysical studies and theoretical studies suggested that the carbazole group had a strong impact on the structures of DPP-CBZs. As a proof of concept, we showed that grinding the mixture of 1PO as the electron-donating tweezer and benzene-1,2,4,5-tetracarbonitrile (BzCN) as the electron acceptor induced the formation of the CT complex.
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Affiliation(s)
- Xinyu Li
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Zhaoxin Liu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Can Li
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Rong Gao
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Yanpeng Qi
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
- ShanghaiTech Laboratory for Topological Physics, ShanghaiTech University, Shanghai 201210, China
- Shanghai Key Laboratory of High-resolution Electron Microscop, ShanghaiTech University, Shanghai 201210, China
| | - Yi Ren
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
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6
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Sarkar SK, Hollister KK, Molino A, Obi AD, Deng CL, Tra BYE, Stewart BM, Dickie DA, Wilson DJD, Gilliard RJ. Bis(9-Boraphenanthrene) and Its Stable Biradical. J Am Chem Soc 2023; 145:21475-21482. [PMID: 37738168 DOI: 10.1021/jacs.3c07236] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/24/2023]
Abstract
Selective and site-specific boron-doping of polycyclic aromatic hydrocarbon frameworks often give rise to redox and/or photophysical properties that are not easily accessible with the analogous all-carbon systems. Herein, we report ligand-mediated control of boraphenanthrene closed- and open-shell electronic states, which has led to the first structurally characterized examples of neutral bis(9-boraphenanthrene) (2-3) and its corresponding biradical (4). Notably, compounds 2 and 3 show intramolecular charge transfer absorption from the 9-boraphenanthrene units to p-quinodimethane, exhibiting dual (red-shifted) emission in solution due to excited state conjugation enhancement (ESCE). Moreover, while boron-centered monoradicals are ubiquitous, biradical 4 represents a rare type of open-shell singlet compound with 95% biradical character, among the highest of any reported boron-based polycyclic species with two radical sites.
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Affiliation(s)
- Samir Kumar Sarkar
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Kimberly K Hollister
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Andrew Molino
- Department of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, 3086 Victoria, Australia
| | - Akachukwu D Obi
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Chun-Lin Deng
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Bi Youan E Tra
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Brennan M Stewart
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - Diane A Dickie
- Department of Chemistry, University of Virginia, Charlottesville, Virginia 22904, United States
| | - David J D Wilson
- Department of Biochemistry and Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, 3086 Victoria, Australia
| | - Robert J Gilliard
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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7
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Yang Z, Li X, Yang K, Yu N, Gao R, Ren Y. Synthesis and Unexpected Optical Properties of Ionic Phosphorus Heterocycles with P-Regulated Noncovalent Interactions. J Org Chem 2023. [PMID: 36786509 DOI: 10.1021/acs.joc.2c02424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
Optoelectronic properties of organic chromophores (OCPs) are to a large extent dictated by the chemical structures. Herein, we synthesized a new series of ionic phosphorus(P)-heteropines via the methylation of the P(III) center. Our studies revealed that methylation is highly dependent on the P(III) environments (NPN, NPC, and CPC), in which adjacent nitrogen atoms greatly withdraw electron density of the P(III) center. The observation of noncovalent interactions between solvent molecules and the molecular backbones of the related P-heterocycle in the single crystal structure implied tunable molecular conformations. Different from the red-shifted absorption and emission spectra of ionic P-OCPs induced by either decreased lowest unoccupied molecular orbital (LUMO) or intramolecular charge transfer (ICT) state in previous studies, current ionic P-heterocycles exhibit blue-shifted absorption and emission spectra compared to the nonionic counterparts. Our experimental and theoretical studies suggest that the unexpected photophysical characters are probably due to the counter-anion induced structure twisting via intermolecular noncovalent interactions between NH-indole and O(OTf), and/or strong intermolecular O···F bonding between O(MI) and F(OTf). Our studies also revealed that the P-environments (NPN, NPC, and CPC) conjunctly impact the photophysical properties of the ionic P-heteropines. Overall, the fact that the P-environment-regulated noncovalent interactions induce the rich structure dynamics and photophysics offers us with a new and effective strategy to fine-tune the optical properties of OCPs.
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Affiliation(s)
- Zi Yang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Xinyu Li
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Kai Yang
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Na Yu
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Rong Gao
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Yi Ren
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China
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8
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Cheng L, Meng QW, Ge Q. Construction and Chlorine Resistance of Thiophene-Poly(ethyleneimine)-Based Dual-Functional Nanofiltration Membranes. ACS APPLIED MATERIALS & INTERFACES 2023; 15:10018-10029. [PMID: 36749691 DOI: 10.1021/acsami.2c21627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The demand to improve the chlorine resistance of polyamide (PA) membranes is escalated with greater amounts of chlorine-containing disinfectant being used in global water treatment during the COVID-19 pandemic. In this work, we designed thiophene-functionalized poly(ethyleneimine) (TPEI) materials first and grafted them onto a conventional PA membrane to develop novel nanofiltration membranes (PEI-M, TPEI-1-M, TPEI-2-M). These membranes have dual-functionalized selective surfaces covered by hydrophilic amino groups and electron-rich thiophene moieties, which endow these membranes with superior chlorine resistance and improved separation performance. The modified membranes increase the rejection of MgCl2 from 86.5% of the nascent PA membrane (PA-M) to higher than 93.0% without sacrificing the membrane water permeability. More stable separation performance is achieved with all of the as-prepared membranes than PA-M after exposure to a 2000 ppm sodium hypochlorite solution. TPEI-2-M outperforms other membranes after being treated in a chlorination intensity of 16,000 ppm·h with the smallest flux loss and the highest MgCl2 rejection. This is mainly ascribed to the highest amount of amino and thiophene moieties on the TPEI-2-M surface. This study provides an effective protocol for developing novel PA-based nanofiltration membranes while demonstrating its superiority over current technologies with exceptional separation performance and antichlorine ability.
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Affiliation(s)
- Luyang Cheng
- College of Environment and Safety Engineering, Fuzhou University, No.2 Xueyuan Road, Fujian 350116, China
| | - Qing-Wei Meng
- College of Environment and Safety Engineering, Fuzhou University, No.2 Xueyuan Road, Fujian 350116, China
| | - Qingchun Ge
- College of Environment and Safety Engineering, Fuzhou University, No.2 Xueyuan Road, Fujian 350116, China
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9
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Alahmadi AF, Yin X, Lalancette RA, Jäkle F. Synthesis and Structure-Property Relationships in Regioisomeric Alternating Borane-Terthiophene Polymers. Chemistry 2022; 29:e202203619. [PMID: 36562302 DOI: 10.1002/chem.202203619] [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: 11/21/2022] [Revised: 12/17/2022] [Accepted: 12/18/2022] [Indexed: 12/24/2022]
Abstract
Main-chain boron-containing π-conjugated polymers are attractive for organic electronic, sensing, and imaging applications. Alternating terthiophene-borane polymers were prepared and the effects of regioisomeric attachment of the conjugated linker and variations in the electronic effect of the pendent aryl groups (2,4,6-tri-tert-butylphenyl, Mes*; 2,4,6-tris(trifluoromethyl)phenyl, FMes) examined. Pd2 dba3 /P(t-Bu)3 -catalyzed Stille polymerization of arylbis(2-thienyl)borane and arylbis(3-thienylborane) with 2,5-bis(trimethylstannyl)thiophene at 120 °C gave polymers with appreciable molecular weight but MALDI-TOF MS analyses showed evidence of unusually prominent homocoupling. These defects could be suppressed by using brominated rather than iodinated monomers, more hindered 2,5-bis(tri-n-butylstannyl)thiophene as comonomer, and Pd2 dba3 /P(o-tol)3 as the catalyst at 100 °C. Under these conditions, macrocyclic species with n=3-10 repeating units formed preferentially according to MALDI-TOF MS analyses. Photophysical studies revealed a prominent effect of the regiochemistry and the nature of the pendent aryl groups on the absorption and emission, giving rise to orange, yellow-green, blue-green, and blue emissive materials respectively. The electronic effects were rationalized through DFT calculations on bis(terthiophene) model systems.
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Affiliation(s)
- Abdullah F Alahmadi
- Department of Chemistry, Rutgers University-Newark, 73 Warren Street, 07102, Newark, NJ, USA
| | - Xiaodong Yin
- Department of Chemistry, Rutgers University-Newark, 73 Warren Street, 07102, Newark, NJ, USA.,Current address: 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, 102488, Beijing, P. R. China
| | - Roger A Lalancette
- Department of Chemistry, Rutgers University-Newark, 73 Warren Street, 07102, Newark, NJ, USA
| | - Frieder Jäkle
- Department of Chemistry, Rutgers University-Newark, 73 Warren Street, 07102, Newark, NJ, USA
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10
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Bachmann J, Helbig A, Crumbach M, Krummenacher I, Braunschweig H, Helten H. Fusion of Aza- and Oxadiborepins with Furans in a Reversible Ring-Opening Process Furnishes Versatile Building Blocks for Extended π-Conjugated Materials. Chemistry 2022; 28:e202202455. [PMID: 35943830 PMCID: PMC9825880 DOI: 10.1002/chem.202202455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Indexed: 01/11/2023]
Abstract
A modular synthesis of both difurooxa- and difuroazadiborepins from a common precursor is demonstrated. Starting from 2,2'-bifuran, after protection of the positions 5 and 5' with bulky silyl groups, formation of the novel polycycles proceeds through opening of the furan rings to a dialkyne and subsequent re-cyclization in the borylation step. The resulting bifuran-fused diborepins show pronounced stability, highly planar tricyclic structures, and intense blue light emission. Deprotection and transformation into dibrominated building blocks that can be incorporated into π-extended materials can be performed in one step. Detailed DFT calculations provide information about the aromaticity of the constituent rings of this polycycle.
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Affiliation(s)
- Jonas Bachmann
- Institute of Inorganic Chemistry andInstitute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Andreas Helbig
- Institute of Inorganic Chemistry andInstitute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Merian Crumbach
- Institute of Inorganic Chemistry andInstitute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Ivo Krummenacher
- Institute of Inorganic Chemistry andInstitute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Holger Braunschweig
- Institute of Inorganic Chemistry andInstitute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Holger Helten
- Institute of Inorganic Chemistry andInstitute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
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11
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Hollister KK, Yang W, Mondol R, Wentz KE, Molino A, Kaur A, Dickie DA, Frenking G, Pan S, Wilson DJD, Gilliard RJ. Isolation of Stable Borepin Radicals and Anions. Angew Chem Int Ed Engl 2022; 61:e202202516. [PMID: 35289046 PMCID: PMC9324096 DOI: 10.1002/anie.202202516] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Indexed: 12/31/2022]
Abstract
Borepin, a 7-membered boron-containing heterocycle, has become an emerging molecular platform for the development of new materials and optoelectronics. While electron-deficient borepins are well-established, reduced electron-rich species have remained elusive. Herein we report the first isolable, crystalline borepin radical (2 a, 2 b) and anion (3 a, 3 b) complexes, which have been synthesized by potassium graphite (KC8 ) reduction of cyclic(alkyl)(amino) carbene-dibenzo[b,d]borepin precursors. Borepin radicals and anions have been characterized by EPR or NMR, elemental analysis, X-ray crystallography, and cyclic voltammetry. In addition, the bonding features have been investigated computationally using density functional theory.
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Affiliation(s)
- Kimberly K. Hollister
- Department of ChemistryUniversity of Virginia409 McCormick Rd./PO Box 400319CharlottesvilleVA 22904USA
| | - Wenlong Yang
- Department of ChemistryUniversity of Virginia409 McCormick Rd./PO Box 400319CharlottesvilleVA 22904USA
| | - Ranajit Mondol
- Department of ChemistryUniversity of Virginia409 McCormick Rd./PO Box 400319CharlottesvilleVA 22904USA
| | - Kelsie E. Wentz
- Department of ChemistryUniversity of Virginia409 McCormick Rd./PO Box 400319CharlottesvilleVA 22904USA
| | - Andrew Molino
- Department of Chemistry and PhysicsLa Trobe Institute for Molecular ScienceLatrobe UniversityMelbourne3086, VictoriaAustralia
| | - Aishvaryadeep Kaur
- Department of Chemistry and PhysicsLa Trobe Institute for Molecular ScienceLatrobe UniversityMelbourne3086, VictoriaAustralia
| | - Diane A. Dickie
- Department of ChemistryUniversity of Virginia409 McCormick Rd./PO Box 400319CharlottesvilleVA 22904USA
| | - Gernot Frenking
- Fachbereich ChemiePhilipps-Universität MarburgHans-Meerwein-Strasse 435043MarburgGermany
| | - Sudip Pan
- Fachbereich ChemiePhilipps-Universität MarburgHans-Meerwein-Strasse 435043MarburgGermany
| | - David J. D. Wilson
- Department of Chemistry and PhysicsLa Trobe Institute for Molecular ScienceLatrobe UniversityMelbourne3086, VictoriaAustralia
| | - Robert J. Gilliard
- Department of ChemistryUniversity of Virginia409 McCormick Rd./PO Box 400319CharlottesvilleVA 22904USA
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12
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Adachi Y, Arai F, Yamada K, Kurihara M, Ohshita J. Optical Properties of Boron-Incorporated Analogues of Tetrathienoanthracene. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00106] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Yohei Adachi
- Smart Innovation Program, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
| | - Fuka Arai
- Smart Innovation Program, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
| | - Kohei Yamada
- Smart Innovation Program, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
| | - Maho Kurihara
- Smart Innovation Program, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
| | - Joji Ohshita
- Smart Innovation Program, Graduate School of Advanced Science and Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
- Division of Materials Model-Based Research, Digital Monozukuri (Manufacturing) Education and Research Center, Hiroshima University, Higashi-Hiroshima 739-0046, Japan
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13
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Hollister KK, Yang W, Mondol R, Wentz KE, Molino A, Kaur A, Dickie DA, Frenking G, Pan S, Wilson DJD, Gilliard RJ. Isolation of Stable Borepin Radicals and Anions. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Kimberly K. Hollister
- Department of Chemistry University of Virginia 409 McCormick Rd./PO Box 400319 Charlottesville VA 22904 USA
| | - Wenlong Yang
- Department of Chemistry University of Virginia 409 McCormick Rd./PO Box 400319 Charlottesville VA 22904 USA
| | - Ranajit Mondol
- Department of Chemistry University of Virginia 409 McCormick Rd./PO Box 400319 Charlottesville VA 22904 USA
| | - Kelsie E. Wentz
- Department of Chemistry University of Virginia 409 McCormick Rd./PO Box 400319 Charlottesville VA 22904 USA
| | - Andrew Molino
- Department of Chemistry and Physics La Trobe Institute for Molecular Science Latrobe University Melbourne 3086, Victoria Australia
| | - Aishvaryadeep Kaur
- Department of Chemistry and Physics La Trobe Institute for Molecular Science Latrobe University Melbourne 3086, Victoria Australia
| | - Diane A. Dickie
- Department of Chemistry University of Virginia 409 McCormick Rd./PO Box 400319 Charlottesville VA 22904 USA
| | - Gernot Frenking
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Strasse 4 35043 Marburg Germany
| | - Sudip Pan
- Fachbereich Chemie Philipps-Universität Marburg Hans-Meerwein-Strasse 4 35043 Marburg Germany
| | - David J. D. Wilson
- Department of Chemistry and Physics La Trobe Institute for Molecular Science Latrobe University Melbourne 3086, Victoria Australia
| | - Robert J. Gilliard
- Department of Chemistry University of Virginia 409 McCormick Rd./PO Box 400319 Charlottesville VA 22904 USA
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14
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Mansha M, Ahmad T, Ullah N, Akram Khan S, Ashraf M, Ali S, Tan B, Khan I. Photocatalytic Water-Splitting by Organic Conjugated Polymers: Opportunities and Challenges. CHEM REC 2022; 22:e202100336. [PMID: 35257485 DOI: 10.1002/tcr.202100336] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 02/14/2022] [Accepted: 02/22/2022] [Indexed: 11/11/2022]
Abstract
The future challenges associated with the shortage of fossil fuels and their current environmental impacts intrigued the researchers to look for alternative ways of generating green energy. Solar-driven water splitting into oxygen and hydrogen is one of those advanced strategies. Researchers have studied various semiconductor materials to achieve potential results. However, it encountered multiple challenges such as high cost, low photostability and efficiency, and required multistep modifications. The conjugated polymers (CPs) have emerged as promising alternatives for conventional inorganic semiconductors. The CPs offer low cost, sufficient light absorption efficiency, excellent photo and chemical stability, and molecular optoelectronic tunable characteristics. Furthermore, organic CPs also present higher flexibility to tune the basic framework of the backbone of the polymers, amendments in the sidechain to incorporate desired functionalities, and much-needed porosity to serve better for photocatalytic applications. This review article summarizes the recent advancements made in visible-light-driven water splitting covering the aspects of synthetic strategies and experimental parameters employed for water splitting reactions with special emphasis on conjugated polymers such as linear CPs, planarized CPs, graphitic carbon nitride (g-C3 N4 ), conjugated microporous polymers (CMPs), covalent organic frameworks (COFs), and conjugated polymer-based nanocomposites (CPNCs). The current challenges and future prospects have also been described briefly.
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Affiliation(s)
- Muhammad Mansha
- Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Tauqir Ahmad
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Nisar Ullah
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia.,Interdisciplinary Research Center for Refining and Advanced Chemicals, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Safyan Akram Khan
- Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Muhammad Ashraf
- Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Shahid Ali
- Interdisciplinary Research Center for Hydrogen and Energy Storage, King Fahd University of Petroleum and Minerals, Dhahran, 31261, Saudi Arabia
| | - Bein Tan
- School of Chemistry and Chemical Engineering, Huazhong University of Science & Technology, Wuhan, 430074, China
| | - Ibrahim Khan
- School of Chemical Engineering and Materials Science, Chung-Ang University, 84 Heukseok-ro, Seoul, 06974, South Korea
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15
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Ma J, Gao H, Feng J, Zhang SF, Wang L, Zhao D, Wu Y, Jiang L. Controlled Assembly of Conjugated Ladder Molecules with Different Bridging Structures toward Optoelectronic Application. ACS APPLIED MATERIALS & INTERFACES 2021; 13:50197-50205. [PMID: 34652904 DOI: 10.1021/acsami.1c18673] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Structural design of organic π-conjugated small molecules allows the energy band structure and electronic properties of the molecules to be tuned as needed, which provides a feasible strategy for enhancing the performance of optoelectronic devices. The introduction of bridging structures is a common structural modification method to adjust the rigidity and coplanarity of the molecular backbone, thus affecting the molecular packing. However, patterning of organic single-crystalline microstructures based on conjugated ladder molecules with different bridging structures still remains challenging for large-area integration of optoelectronic devices. In this paper, a controlled dewetting process is applied to obtain organic single-crystalline arrays with precise positioning and a regular morphology based on two isomers with silicon-oxygen bridging and their two carbon-oxygen-bridged analogues. Molecules with different bridging structures show disparate packing models due to the difference of dihedral angles and ring tensions. A microwire-array ultraviolet photodetector based on the oxygen-silicon-bridging ladder molecule exhibits a high light on/off ratio of 24 and a responsivity of 0.63 mA W-1 owing to the effective π-π stacking governed by the molecular planarity. This work not only provides a universal method for the integration of organic optoelectronic devices but also explains the effect of bridging structure engineering on molecular assembly and optoelectronic performance.
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Affiliation(s)
- Jianpeng Ma
- School of Materials Science and Technology, China University of Geosciences, Beijing 100083, P. R. China
- Key Laboratory of Bio-Inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Hanfei Gao
- Key Laboratory of Bio-Inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- Ji Hua Laboratory, Foshan, 528000 Guangdong, P. R. China
| | - Jiangang Feng
- Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
| | - Shou-Feng Zhang
- Department of Electronic Engineering, Guangxi University of Science and Technology, Liuzhou 545006, P. R. China
| | - Lin Wang
- School of Materials Science and Technology, China University of Geosciences, Beijing 100083, P. R. China
| | - Dongbing Zhao
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Yuchen Wu
- Key Laboratory of Bio-Inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- Ji Hua Laboratory, Foshan, 528000 Guangdong, P. R. China
| | - Lei Jiang
- Key Laboratory of Bio-Inspired Materials and Interfacial Science, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- Ji Hua Laboratory, Foshan, 528000 Guangdong, P. R. China
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16
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Sa S, Murali AC, Nayak P, Venkatasubbaiah K. Thiophene-fused boracycles as photoactive analogues of diboraanthracenes. Chem Commun (Camb) 2021; 57:10170-10173. [PMID: 34519321 DOI: 10.1039/d1cc03323a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The construction of thiophene-fused analogues of diboraanthracenes with different aryl substituents through boron-mercury exchange followed by the nucleophilic replacement of the chlorines of dichlorodiboradithiophene 2 with Grignard reagents is reported. These diboradithiophenes exhibited unusual photophysical and electrochemical properties. They all undergo photoisomerisation, which can be traced using photophysical and 1H NMR spectroscopy studies.
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Affiliation(s)
- Shreenibasa Sa
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar-752050, Odisha, India.
| | - Anna Chandrasekar Murali
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar-752050, Odisha, India.
| | - Prakash Nayak
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar-752050, Odisha, India.
| | - Krishnan Venkatasubbaiah
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar-752050, Odisha, India.
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17
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Li C, Shi Y, Li P, Zhang N, Wang N, Yin X, Chen P. Access to Highly Luminescent N-Doped Diazaborepins with Penta-, Hexa-, and Heptagon Substructures. Org Lett 2021; 23:7123-7128. [PMID: 34449226 DOI: 10.1021/acs.orglett.1c02528] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Two diazaborepins (BNN1 and BNN2) have been accomplished via a highly efficient pathway in the step-economic transformation. Oxidative dimerization of carbazole derivatives followed by borylation reaction gave heterocyclic diazaborepin as the key building block. Replacement of carbon moiety in traditional borepins with N-N functionality led to a significant red shift of their emissions up to 585 nm with strong red color as solids. This work offered an approach to diazaborepin-based materials for applications in light-emitting field.
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Affiliation(s)
- Chenglong Li
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing 102488, People's Republic of China
| | - Yafei Shi
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing 102488, People's Republic of China
| | - Pengfei Li
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing 102488, People's Republic of China
| | - Niu Zhang
- Analysis & Testing Centre, Beijing Institute of Technology of China, Beijing 102488, China
| | - Nan Wang
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing 102488, People's Republic of China
| | - Xiaodong Yin
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing 102488, People's Republic of China
| | - Pangkuan Chen
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, Key Laboratory of Cluster Science of the Ministry of Education, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing 102488, People's Republic of China
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18
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Fritze L, Fest M, Helbig A, Bischof T, Krummenacher I, Braunschweig H, Finze M, Helten H. Boron-Doped α-Oligo- and Polyfurans: Highly Luminescent Hybrid Materials, Color-Tunable through the Doping Density. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01267] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lars Fritze
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Maximilian Fest
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Andreas Helbig
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Tobias Bischof
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Ivo Krummenacher
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Holger Braunschweig
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Maik Finze
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Holger Helten
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
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19
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Liu Y, Li B, Xiang Z. Pathways towards Boosting Solar-Driven Hydrogen Evolution of Conjugated Polymers. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2021; 17:e2007576. [PMID: 34160904 DOI: 10.1002/smll.202007576] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 01/16/2021] [Indexed: 06/13/2023]
Abstract
Photocatalytic H2 evolution under solar illumination has been considered to be a promising technology for green energy resources. Developing highly efficient photocatalysts for photocatalytic water splitting is long-term desired but still challenging. Conjugated polymers (CPs) have attracted ongoing attention and have been considered to be promising alternatives for solar-driven H2 production due to the excellent merits of the large π-conjugated system, versatile structures, tunable photoelectric properties, and well-defined chemical composites. The excellent merits have offered numerous methods for boosting photocatalytic hydrogen evolution (PHE) of initial CP-based photocatalysts, whose apparent quantum yield is dramatically increased from <1 to >20% in recent five years. According to the photocatalytic mechanism, this review herein systematically summarizes three major strategies for boosting photocatalytic H2 production of CPs: 1) enhancing visible light absorption, 2) suppressing recombination of electron-hole pairs, and 3) boosting surface catalytic reaction, mainly involving eleven methods, that is, copolymerization, modifying cross-linker, constructing a donor-acceptor structure, functionalization, fabricating organic heterojunction, loading cocatalyst, and surface modification. Finally, the perspectives towards the future development of PHE are proposed.
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Affiliation(s)
- Yaoyao Liu
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
| | - Bingjie Li
- The First Affiliated Hospital Zhengzhou University, 1 Jianshe Street, Zhengzhou, Henan, 450052, P. R. China
| | - Zhonghua Xiang
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing, 100029, P. R. China
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20
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Crumbach M, Bachmann J, Fritze L, Helbig A, Krummenacher I, Braunschweig H, Helten H. Dithiophene‐Fused Oxadiborepins and Azadiborepins: A New Class of Highly Fluorescent Heteroaromatics. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202100295] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Merian Crumbach
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB) Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Jonas Bachmann
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB) Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Lars Fritze
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB) Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Andreas Helbig
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB) Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Ivo Krummenacher
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB) Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Holger Braunschweig
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB) Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Holger Helten
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB) Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
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21
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Crumbach M, Bachmann J, Fritze L, Helbig A, Krummenacher I, Braunschweig H, Helten H. Dithiophene-Fused Oxadiborepins and Azadiborepins: A New Class of Highly Fluorescent Heteroaromatics. Angew Chem Int Ed Engl 2021; 60:9290-9295. [PMID: 33522053 PMCID: PMC8252115 DOI: 10.1002/anie.202100295] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Indexed: 12/15/2022]
Abstract
Access to dithiophene-fused oxadiborepins and the first azadiborepins attained via a modular synthesis route are presented. The new compounds emit intense blue light, some of which demonstrate fluorescence quantum yields close to unity. Cyclic voltammetry (CV) revealed electrochemically reversible one-electron reduction processes. The weak aromatic character of the novel 1,2,7-azadiborepin ring is demonstrated with in-depth theoretical investigations using nucleus-independent chemical shift (NICS) scans and anisotropy of the induced current density (ACID) calculations.
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Affiliation(s)
- Merian Crumbach
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Jonas Bachmann
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Lars Fritze
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Andreas Helbig
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Ivo Krummenacher
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Holger Braunschweig
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Holger Helten
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB)Julius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
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22
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Dhiman A, Giribabu L, Trivedi R. π-Conjugated Materials Derived From Boron-Chalcogenophene Combination. A Brief Description of Synthetic Routes and Optoelectronic Applications. CHEM REC 2021; 21:1738-1770. [PMID: 33844422 DOI: 10.1002/tcr.202100039] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Revised: 03/19/2021] [Accepted: 03/29/2021] [Indexed: 12/12/2022]
Abstract
Functional materials composed of Boron-chalcogenophene conjugates have emerged as promising ensemble featuring commendable optoelectronic properties. This review describes the categories, synthetic routes and optoelectronic applications of a range of boron-chalcogenophene conjugates. Conjugation and linking of different types of tri- and tetra-coordinated boron moieties with chalcogenophenes have remained an important strategy for constructing a range of functional materials. Synthetic protocols have been devised to efficiently prepare such chemically robust conjugates, often exhibiting a myriad of photophysical properties, redox capabilities and also solid-state behaviors. Tin-boron and silicon-boron exchange protocols have been efficiently adapted to access these boron-chalcogenophenes. Few other commonly used methods namely, hydroboration of alkynes as well as electrophilic borylations are also mentioned. The chemical and electronic properties of such boron-chalcogenophene conjugates are directly influenced by the strong Lewis acid character of trivalent boranes which can further alter the intra- and inter- molecular Lewis acid-base interactions. Apart from the synthetic protocols, recent advances in the application of these boron-chalcogenophene conjugates towards analyte sensing, organic electronics, molecular switches and several other aspects will be discussed in this review.
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Affiliation(s)
- Ankita Dhiman
- Catalysis and Fine Chemicals Department, CSIR-Indian Institute of Chemical Technology, Hyderabad, Uppal Road, Tarnaka, Hyderabad,, 500007, Telangana, India
| | - Lingamallu Giribabu
- Polymers and Functional Materials Department, CSIR-Indian Institute of Chemical Technology, Hyderabad, Uppal Road, Tarnaka, Hyderabad, 500007, Telangana, India.,Professor (AcSIR), Academy of Scientific and Innovative Research, AcSIR Headquarters, CSIR-HRDC campus Sector 19, Kamala Nehru Nagar, Ghaziabad, U.P., 201 002, India
| | - Rajiv Trivedi
- Catalysis and Fine Chemicals Department, CSIR-Indian Institute of Chemical Technology, Hyderabad, Uppal Road, Tarnaka, Hyderabad,, 500007, Telangana, India.,Professor (AcSIR), Academy of Scientific and Innovative Research, AcSIR Headquarters, CSIR-HRDC campus Sector 19, Kamala Nehru Nagar, Ghaziabad, U.P., 201 002, India
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23
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Riensch NA, Swoboda L, Lik A, Krummenacher I, Braunschweig H, Helten H. Conjugated Bis(triarylboranes) with Disconnected Conjugation. Z Anorg Allg Chem 2021. [DOI: 10.1002/zaac.202000476] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Nicolas Alexander Riensch
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB) Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Lukas Swoboda
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB) Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Artur Lik
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB) Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Ivo Krummenacher
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB) Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Holger Braunschweig
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB) Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Holger Helten
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB) Julius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
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24
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Duan Z, Wang L, Ma J, Si E. Recent Advances in Luminescent Annulated Borepins, Silepins, and Phosphepins. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/s-0040-1705946] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
AbstractThis review summarizes recent research on the molecular design, optical, and electronic properties of annulated borepins, silepins, and phosphepins, with emphasis on their structure–property relationships at the molecular level.1 Introduction2 Borepins3 Silepins4 Phosphepins5 Summary and Outlook
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25
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Adachi Y, Arai F, Sakabe M, Ohshita J. Effect of the conjugation pathway on the electronic structures of p–π* conjugated polymers with fused borepin units. Polym Chem 2021. [DOI: 10.1039/d1py00528f] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Borepin, an aromatic ring system with tricoordinate boron, was incorporated into p–π* conjugated polymers. The polymers exhibited characteristic optical responses upon the addition of cyanide anions in solution.
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Affiliation(s)
- Yohei Adachi
- Smart Innovation Program
- Graduate School of Advanced Science and Engineering
- Hiroshima University
- Higashi-Hiroshima 739-8527
- Japan
| | - Fuka Arai
- Smart Innovation Program
- Graduate School of Advanced Science and Engineering
- Hiroshima University
- Higashi-Hiroshima 739-8527
- Japan
| | - Mitsuru Sakabe
- Smart Innovation Program
- Graduate School of Advanced Science and Engineering
- Hiroshima University
- Higashi-Hiroshima 739-8527
- Japan
| | - Joji Ohshita
- Smart Innovation Program
- Graduate School of Advanced Science and Engineering
- Hiroshima University
- Higashi-Hiroshima 739-8527
- Japan
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26
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Riensch NA, Fest M, Fritze L, Helbig A, Krummenacher I, Braunschweig H, Helten H. Bifuran-bridged bisboranes: highly luminescent B-doped oligohetarenes. NEW J CHEM 2021. [DOI: 10.1039/d0nj04297h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Boron-doping of oligohetarenes – via classical metathesis or silicon/boron exchange routes – led to strongly luminescent and twofold reversibly reducible oligomers.
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Affiliation(s)
- Nicolas Alexander Riensch
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Maximilian Fest
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Lars Fritze
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Andreas Helbig
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Ivo Krummenacher
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Holger Braunschweig
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Holger Helten
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron (ICB), Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
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27
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Padberg K, Ascherl JDR, Hampel F, Kivala M. Isomeric Dithienophosphepines: The Impact of Ring Fusion on Electronic and Structural Properties. Chemistry 2020; 26:3474-3478. [PMID: 31797440 PMCID: PMC7154744 DOI: 10.1002/chem.201905429] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2019] [Indexed: 01/01/2023]
Abstract
The synthesis and extensive experimental (X-ray crystallography, UV/Vis spectroscopy, cyclic voltammetry) and theoretical (DFT calculations) characterization of two isomeric dithieno[b,f]phosphepines (DTPs) are presented herein. The relative orientation of the phosphepine and the thiophene moieties has a decisive impact on the electronic and structural properties of these compounds. Moreover, the thiophene units allow for a facile subsequent functionalization through direct Pd-catalyzed C-H coupling, which renders DTPs highly promising building blocks for organophosphorus functional materials.
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Affiliation(s)
- Kevin Padberg
- Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nürnberg, Nikolaus-Fiebiger-Strasse 10, 91058, Erlangen, Germany
| | - Johannes D R Ascherl
- Institute of Organic Chemistry & Centre for Advanced Materials, Ruprecht-Karls-University Heidelberg, Im Neuenheimer Feld 270 & 225, 69120, Heidelberg, Germany
| | - Frank Hampel
- Department of Chemistry and Pharmacy, Friedrich-Alexander-University Erlangen-Nürnberg, Nikolaus-Fiebiger-Strasse 10, 91058, Erlangen, Germany
| | - Milan Kivala
- Institute of Organic Chemistry & Centre for Advanced Materials, Ruprecht-Karls-University Heidelberg, Im Neuenheimer Feld 270 & 225, 69120, Heidelberg, Germany
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28
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Tian D, Li Q, Zhao Y, Wang Z, Li W, Xia S, Xing S, Zhu B, Zhang J, Cui C. Synthesis of bis-BN-Naphthalene-Fused Oxepins and Their Photoluminescence Including White-Light Emission. J Org Chem 2020; 85:526-536. [PMID: 31859499 DOI: 10.1021/acs.joc.9b02594] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
A series of novel bis-BN-naphthalene-fused oxepin derivatives were synthesized via a Pd-catalyzed tandem reaction from brominated 2,1-borazaronaphthalenes and cis-bis(boryl)alkenes. X-ray crystallographic analysis revealed that bis-BN-naphthalene-fused oxepins feature a planar framework. The electronic and photophysical properties of the novel BN-naphthalene-fused oxepins were investigated by UV-vis and fluorescence spectroscopies and density functional theory (DFT) calculations, which disclosed the distinct electronic and photophysical properties of the analogous hydrocarbon system. Interestingly, dual-fluorescent emissions were observed upon dissolving N-substituted derivatives 10-14 in dimethyl sulfoxide. Tunable emission colors especially for white-light emissions can be achieved by controlling the ratio of solvents, concentration, or temperature using only a single-molecule compound.
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Affiliation(s)
- Dawei Tian
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry , Tianjin Normal University , Tianjin 300387 , People's Republic of China
| | - Qian Li
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry , Tianjin Normal University , Tianjin 300387 , People's Republic of China
| | - Yifan Zhao
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry , Tianjin Normal University , Tianjin 300387 , People's Republic of China
| | - Zijia Wang
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry , Tianjin Normal University , Tianjin 300387 , People's Republic of China
| | - Wenbin Li
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry , Tianjin Normal University , Tianjin 300387 , People's Republic of China
| | - Shuling Xia
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry , Tianjin Normal University , Tianjin 300387 , People's Republic of China
| | - Siyang Xing
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry , Tianjin Normal University , Tianjin 300387 , People's Republic of China
| | - Bolin Zhu
- Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Key Laboratory of Inorganic-Organic Hybrid Functional Material Chemistry, Ministry of Education (Tianjin Normal University), College of Chemistry , Tianjin Normal University , Tianjin 300387 , People's Republic of China
| | - Jianying Zhang
- State Key Laboratory of Elemento-Organic Chemistry , Cooperative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University , Tianjin 300071 , China
| | - Chunming Cui
- State Key Laboratory of Elemento-Organic Chemistry , Cooperative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University , Tianjin 300071 , China
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29
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Shimoi M, Kevlishvili I, Watanabe T, Maeda K, Geib SJ, Curran DP, Liu P, Taniguchi T. The Thermal Rearrangement of an NHC-Ligated 3-Benzoborepin to an NHC-Boranorcaradiene. Angew Chem Int Ed Engl 2020; 59:903-909. [PMID: 31670450 DOI: 10.1002/anie.201912234] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Indexed: 11/08/2022]
Abstract
An N-heterocyclic-carbene-ligated 3-benzoborepin with a bridged structure has been synthesized by double radical trans-hydroboration of benzo[3,4]cycloundec-3-ene-1,5-diyne with an N-heterocyclic carbene borane. The thermal reaction of the NHC-ligated borepin at 150 °C gives an isolable NHC-boranorcaradiene. Experiments and density functional theory calculations support a mechanism whereby the borepin initially rearranges to a boranorcaradiene by a thermal 6π-electrocyclic reaction. This is followed by 1,5-boron shift to give a rearranged boranorcaradiene. This shift occurs with stereoinversion at boron through a transition state with open-shell diradical character. This is the first example of the isolation of a boranorcaradiene from a thermal reaction of a borepin.
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Affiliation(s)
- Masaki Shimoi
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Ilia Kevlishvili
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Takashi Watanabe
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Katsuhiro Maeda
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan.,Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
| | - Steven J Geib
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Dennis P Curran
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Tsuyoshi Taniguchi
- Graduate School of Natural Science and Technology, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
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30
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Adachi Y, Arai F, Jäkle F. Extended conjugated borenium dimers via late stage functionalization of air-stable borepinium ions. Chem Commun (Camb) 2020; 56:5119-5122. [DOI: 10.1039/d0cc02514c] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Conjugated dimeric borenium ions exhibit red-shifted absorptions, enhanced emission, and dramatically lower LUMO energies.
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Affiliation(s)
- Yohei Adachi
- Department of Applied Chemistry
- Graduate School of Engineering
- Hiroshima University
- Higashi-Hiroshima 739-8527
- Japan
| | - Fuka Arai
- Department of Applied Chemistry
- Graduate School of Engineering
- Hiroshima University
- Higashi-Hiroshima 739-8527
- Japan
| | - Frieder Jäkle
- Department of Chemistry
- Rutgers University Newark
- Newark
- USA
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31
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Shimoi M, Kevlishvili I, Watanabe T, Maeda K, Geib SJ, Curran DP, Liu P, Taniguchi T. The Thermal Rearrangement of an NHC‐Ligated 3‐Benzoborepin to an NHC‐Boranorcaradiene. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201912234] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Masaki Shimoi
- Graduate School of Natural Science and Technology Kanazawa University Kakuma-machi Kanazawa 920-1192 Japan
| | - Ilia Kevlishvili
- Department of Chemistry University of Pittsburgh Pittsburgh PA 15260 USA
| | - Takashi Watanabe
- Graduate School of Natural Science and Technology Kanazawa University Kakuma-machi Kanazawa 920-1192 Japan
| | - Katsuhiro Maeda
- Graduate School of Natural Science and Technology Kanazawa University Kakuma-machi Kanazawa 920-1192 Japan
- Nano Life Science Institute (WPI-NanoLSI) Kanazawa University Kakuma-machi Kanazawa 920-1192 Japan
| | - Steven J. Geib
- Department of Chemistry University of Pittsburgh Pittsburgh PA 15260 USA
| | - Dennis P. Curran
- Department of Chemistry University of Pittsburgh Pittsburgh PA 15260 USA
| | - Peng Liu
- Department of Chemistry University of Pittsburgh Pittsburgh PA 15260 USA
| | - Tsuyoshi Taniguchi
- Graduate School of Natural Science and Technology Kanazawa University Kakuma-machi Kanazawa 920-1192 Japan
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32
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Baghernejad M, Van Dyck C, Bergfield J, Levine DR, Gubicza A, Tovar JD, Calame M, Broekmann P, Hong W. Quantum Interference Enhanced Chemical Responsivity in Single‐Molecule Dithienoborepin Junctions. Chemistry 2019; 25:15141-15146. [DOI: 10.1002/chem.201903315] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Indexed: 11/08/2022]
Affiliation(s)
- Masoud Baghernejad
- Transport at Nanoscale Interface Laboratory Empa, Swiss Federal Laboratories for Materials Science and Technology 8600 Dübendorf Switzerland
- Department of Chemistry and Biochemistry University of Bern Freiestrasse 3 3012 Bern Switzerland
- Department of Physics University of Basel Klingelbergstrasse 56 4056 Basel Switzerland
| | - Colin Van Dyck
- Department of Physics University of Mons 20, place du parc 7000 Mons Belgium
| | - Justin Bergfield
- Department of Physics and Department of Chemistry Illinois State University Moulton Hall USA
| | - David R. Levine
- Department of Chemistry and Department of Materials Science and Engineering Johns Hopkins University 3400 N. Charles Street Baltimore MD 21218 USA
| | - Agnes Gubicza
- Transport at Nanoscale Interface Laboratory Empa, Swiss Federal Laboratories for Materials Science and Technology 8600 Dübendorf Switzerland
| | - John D. Tovar
- Department of Chemistry and Department of Materials Science and Engineering Johns Hopkins University 3400 N. Charles Street Baltimore MD 21218 USA
| | - Michel Calame
- Transport at Nanoscale Interface Laboratory Empa, Swiss Federal Laboratories for Materials Science and Technology 8600 Dübendorf Switzerland
- Department of Physics University of Basel Klingelbergstrasse 56 4056 Basel Switzerland
| | - Peter Broekmann
- Department of Chemistry and Biochemistry University of Bern Freiestrasse 3 3012 Bern Switzerland
| | - Wenjing Hong
- Department of Chemistry and Biochemistry University of Bern Freiestrasse 3 3012 Bern Switzerland
- State Key Laboratory of Physical Chemistry of Solid Surfaces, iChEM, NEL, College of Chemistry and Chemical Engineering Xiamen University Xiamen 361005 China
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33
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Yang W, Krantz KE, Freeman LA, Dickie DA, Molino A, Kaur A, Wilson DJD, Gilliard RJ. Stable Borepinium and Borafluorenium Heterocycles: A Reversible Thermochromic "Switch" Based on Boron-Oxygen Interactions. Chemistry 2019; 25:12512-12516. [PMID: 31334883 DOI: 10.1002/chem.201903348] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2019] [Indexed: 12/13/2022]
Abstract
The first examples of N-heterocyclic carbene (NHC) and cyclic(alkyl)(amino) carbene (CAAC) stabilized borepinium and borafluorenium heterocycles are reported herein. The optical properties of the heterocyclic borenium cations were tuned by varying the Lewis base and by changing the number of atoms in the ring. More importantly, functionalizing the cationic boron ring system in the NHC-borafluorenium cation affords a temperature-sensitive molecule with reversible colorimetric "turn off/turn on" properties in solution. Notably, this is the first report of thermochromism in these cationic species. This property, which is mediated by an intermolecular boron-oxygen bond equilibrium, was examined in detail by X-ray crystallography, variable temperature-UV/Vis absorption spectroscopy (VT-UV/Vis), and density functional theory (DFT).
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Affiliation(s)
- Wenlong Yang
- Department of Chemistry, University of Virginia, 409 McCormick Rd./ PO Box 400319, Charlottesville, VA, 22904, USA
| | - Kelsie E Krantz
- Department of Chemistry, University of Virginia, 409 McCormick Rd./ PO Box 400319, Charlottesville, VA, 22904, USA
| | - Lucas A Freeman
- Department of Chemistry, University of Virginia, 409 McCormick Rd./ PO Box 400319, Charlottesville, VA, 22904, USA
| | - Diane A Dickie
- Department of Chemistry, University of Virginia, 409 McCormick Rd./ PO Box 400319, Charlottesville, VA, 22904, USA
| | - Andrew Molino
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, 3086, Victoria, Australia
| | - Aishvaryadeep Kaur
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, 3086, Victoria, Australia
| | - David J D Wilson
- Department of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, 3086, Victoria, Australia
| | - Robert J Gilliard
- Department of Chemistry, University of Virginia, 409 McCormick Rd./ PO Box 400319, Charlottesville, VA, 22904, USA
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34
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Omori H, Shinokubo H. Ni(II) 10-Boracorrole: An Antiaromatic Porphyrinoid Containing a Boron Atom at the meso-Position. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00303] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Hiroto Omori
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Hiroshi Shinokubo
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
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35
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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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36
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Zeng C, Yuan K, Wang N, Peng T, Wu G, Wang S. The opposite and amplifying effect of B ← N coordination on photophysical properties of regioisomers with an unsymmetrical backbone. Chem Sci 2019; 10:1724-1734. [PMID: 30842837 PMCID: PMC6369733 DOI: 10.1039/c8sc04210a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 11/27/2018] [Indexed: 01/28/2023] Open
Abstract
1,3-Dipolar cycloaddition of pyrido[2,1-a]isoindole with internal alkynes functionalized by a BMes2ph and an N-aromatic heterocycle leads to the formation of two types of regioisomers (major a and minor b) that have distinct physical and photophysical properties. Examination on 5 pairs of regioisomers unveils that the major isomers consistently have a smaller optical energy gap and emission energy than the corresponding minor isomers, which is greatly amplified by the formation of an internal B ← N bond. The regioisomers with a B ← N bond display contrasting temperature-dependent structural dynamics and response to fluoride ions, owing to an entropy-driven or fluoride initiated B ← N bond rupture/ring-opening process and the different B ← N bond strength. The opposite inductive effect and the Lewis pair properties of the dichotomic substituent units are responsible for the contrasting properties of the regioisomers in this system.
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Affiliation(s)
- Chao Zeng
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials , School of Chemistry and Chemical Engineering , Beijing Institute of Technology of China , Beijing, 102488 , People's Republic of China . ;
| | - Kang Yuan
- Department of Chemistry , Queen's University , Kingston , Ontario K7L 3N6 , Canada
| | - Nan Wang
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials , School of Chemistry and Chemical Engineering , Beijing Institute of Technology of China , Beijing, 102488 , People's Republic of China . ;
| | - Tai Peng
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials , School of Chemistry and Chemical Engineering , Beijing Institute of Technology of China , Beijing, 102488 , People's Republic of China . ;
| | - Gang Wu
- Department of Chemistry , Queen's University , Kingston , Ontario K7L 3N6 , Canada
| | - Suning Wang
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials , School of Chemistry and Chemical Engineering , Beijing Institute of Technology of China , Beijing, 102488 , People's Republic of China . ;
- Department of Chemistry , Queen's University , Kingston , Ontario K7L 3N6 , Canada
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37
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Delouche T, Mocanu A, Roisnel T, Szűcs R, Jacques E, Benkő Z, Nyulászi L, Bouit PA, Hissler M. π-Extended Phosphepines: Redox and Optically Active P-Heterocycles with Nonplanar Framework. Org Lett 2019; 21:802-806. [PMID: 30673253 DOI: 10.1021/acs.orglett.8b04064] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In this letter, we present the synthesis of a new family of π-extended dithieno[ b, f]phosphepines. The Pd-catalyzed direct arylation allows the introduction of various substituents, which tune the absorption/emission in the visible range as well as the redox properties. All those modifications were rationalized through DFT calculations. The physical properties of ambipolar phosphepine with diphenylamino substituents inspired us to use it as a semiconductor in p-type organic field-effect transistors (OFETs).
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Affiliation(s)
- Thomas Delouche
- Univ Rennes, CNRS , ISCR - UMR 6226, ScanMAT - UMS 2001, F-35000 Rennes , France
| | - Anabella Mocanu
- Univ Rennes, CNRS , ISCR - UMR 6226, ScanMAT - UMS 2001, F-35000 Rennes , France
| | - Thierry Roisnel
- Univ Rennes, CNRS , ISCR - UMR 6226, ScanMAT - UMS 2001, F-35000 Rennes , France
| | - Rózsa Szűcs
- Department of Inorganic and Analytical Chemistry , Budapest University of Technology and Economics, and MTA-BME Computation Driven Chemistry Research Group , Szt. Gellert ter 4 , H-1111 Budapest , Hungary
| | | | - Zoltán Benkő
- Department of Inorganic and Analytical Chemistry , Budapest University of Technology and Economics, and MTA-BME Computation Driven Chemistry Research Group , Szt. Gellert ter 4 , H-1111 Budapest , Hungary
| | - László Nyulászi
- Department of Inorganic and Analytical Chemistry , Budapest University of Technology and Economics, and MTA-BME Computation Driven Chemistry Research Group , Szt. Gellert ter 4 , H-1111 Budapest , Hungary
| | - Pierre-Antoine Bouit
- Univ Rennes, CNRS , ISCR - UMR 6226, ScanMAT - UMS 2001, F-35000 Rennes , France
| | - Muriel Hissler
- Univ Rennes, CNRS , ISCR - UMR 6226, ScanMAT - UMS 2001, F-35000 Rennes , France
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38
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Messersmith RE, Tovar JD. Borepin Rings as "Sigma-Free" Reporters of Aromaticity within Polycyclic Aromatic Scaffolds. J Phys Chem A 2019; 123:881-888. [PMID: 30620595 DOI: 10.1021/acs.jpca.9b00125] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The definition and measurement of local and global aromaticity in fused ring polycyclic aromatic compounds is a complex issue. Historically, these types of molecules have been explored in this capacity by way of experimental (NMR, thermochemistry) and computational (NICS, HOMA) analyses. We previously showed how borepin rings with [ b, f] arene fusions can be used as experimental magnetic aromaticity reporters via the remaining protons attached to the borepin rings. In this report, we describe a joint experimental and computational analysis of several borepin-containing polycyclic aromatic molecules in order to draw conclusions about the influence of ring fusion on aromaticity. We find that the borepin ring within these extended structures is a unique motif with limited σ-contribution to aromaticity while still displaying a wide range of structural and magnetic aromatic character.
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Affiliation(s)
- Reid E Messersmith
- Department of Chemistry , Johns Hopkins University , 3400 North Charles Street , Baltimore , Maryland 21218 , United States of America
| | - John D Tovar
- Department of Chemistry , Johns Hopkins University , 3400 North Charles Street , Baltimore , Maryland 21218 , United States of America.,Department of Materials Science and Engineering , Johns Hopkins University , 3400 North Charles Street , Baltimore , Maryland 21218 , United States of America
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39
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Bel Abed H, Blum SA. Transition-Metal-Free Synthesis of Borylated Thiophenes via Formal Thioboration. Org Lett 2018; 20:6673-6677. [DOI: 10.1021/acs.orglett.8b02727] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Hassen Bel Abed
- Department of Chemistry, University of California—Irvine, Irvine, California 92617-2025, United States
| | - Suzanne A. Blum
- Department of Chemistry, University of California—Irvine, Irvine, California 92617-2025, United States
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40
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Hou Q, Liu L, Mellerup SK, Wang N, Peng T, Chen P, Wang S. Stimuli-Responsive B/N Lewis Pairs Based on the Modulation of B–N Bond Strength. Org Lett 2018; 20:6467-6470. [DOI: 10.1021/acs.orglett.8b02774] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Qinggao Hou
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing 102488, China
| | - Lijie Liu
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing 102488, China
| | - Soren K. Mellerup
- Department of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Nan Wang
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing 102488, China
| | - Tai Peng
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing 102488, China
| | - Pangkuan Chen
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing 102488, China
| | - Suning Wang
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology of China, Beijing 102488, China
- Department of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
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41
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Kelch H, Kachel S, Wahler J, Celik MA, Stoy A, Krummenacher I, Kramer T, Radacki K, Braunschweig H. Borabicyclo[3.2.0]heptadiene: A Fused Bicyclic Isomer of Borepin. Chemistry 2018; 24:15387-15391. [DOI: 10.1002/chem.201803509] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Revised: 08/08/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Hauke Kelch
- Institute for Inorganic ChemistryJulius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
- Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Stephanie Kachel
- Institute for Inorganic ChemistryJulius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
- Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Johannes Wahler
- Institute for Inorganic ChemistryJulius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
- Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Mehmet Ali Celik
- Institute for Inorganic ChemistryJulius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
- Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Andreas Stoy
- Institute for Inorganic ChemistryJulius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
- Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Ivo Krummenacher
- Institute for Inorganic ChemistryJulius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
- Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Thomas Kramer
- Institute for Inorganic ChemistryJulius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
- Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Krzysztof Radacki
- Institute for Inorganic ChemistryJulius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
- Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
| | - Holger Braunschweig
- Institute for Inorganic ChemistryJulius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
- Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität Würzburg Am Hubland 97074 Würzburg Germany
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42
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De Simone BC, Mazzone G, Marino T, Russo N, Toscano M. On the Electrochromic Properties of Borepins: A Computational Prediction. ACS OMEGA 2018; 3:9556-9563. [PMID: 31459087 PMCID: PMC6645310 DOI: 10.1021/acsomega.8b01288] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 08/03/2018] [Indexed: 06/10/2023]
Abstract
The spectroelectrochemical features of some recently synthesized borepins have been predicted herein using the methods based on density functional theory. The computed electronic spectra of neutral, radical anion, and dianion species clearly suggest that these molecules can be used as new electrochromic materials. The excellent agreement with the available structural and absorption experimental data for the neutral systems made us confident for the results obtained for charged species and suggests their potential use as electrochromic materials.
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43
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Yan Q, Yin M, Chen C, Zhang Y. An Air-Stable Organoboron Compound, Dithienooxadiborepine: Preparation and Functionalization. J Org Chem 2018; 83:9096-9102. [DOI: 10.1021/acs.joc.8b01188] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Qifan Yan
- Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Mengxuan Yin
- Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Cheng Chen
- Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
| | - Yuankun Zhang
- Key Laboratory for Advanced Materials, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai 200237, China
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44
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Wang Z, Zhou Y, Zhang JX, Krummenacher I, Braunschweig H, Lin Z. DFT Studies on the Reactions of Boroles with Alkynes. Chemistry 2018; 24:9612-9621. [DOI: 10.1002/chem.201801094] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2018] [Revised: 04/04/2018] [Indexed: 12/20/2022]
Affiliation(s)
- Zheng Wang
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong P.R. China
| | - Yu Zhou
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong P.R. China
| | - Jing-Xuan Zhang
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong P.R. China
| | - Ivo Krummenacher
- Institut für Anorganische Chemie; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - Holger Braunschweig
- Institut für Anorganische Chemie; Julius-Maximilians-Universität Würzburg; Am Hubland 97074 Würzburg Germany
| | - Zhenyang Lin
- Department of Chemistry; The Hong Kong University of Science and Technology; Clear Water Bay Kowloon Hong Kong P.R. China
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45
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Lik A, Jenthra S, Fritze L, Müller L, Truong KN, Helten H. From Monodisperse Thienyl- and Furylborane Oligomers to Polymers: Modulating the Optical Properties through the Hetarene Ratio. Chemistry 2018. [PMID: 29543358 DOI: 10.1002/chem.201706124] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The application of our newly developed B-C coupling method by catalytic Si/B exchange is demonstrated for the synthesis of a series of triarylboranes (1), monodisperse thienyl- and furylborane dimers (2) and trimers (9), extended oligomers (3) and polymers (3'), as well as mixed (oligo)thienyl-/furylboranes. The structures of 1 aaTip , 1 bbTip , and 2 bbbMes* , determined by X-ray crystallography, reveal largely coplanar hetarene rings and BR3 environments, which are most pronounced in the furylborane species. Photophysical investigations, supported by TD-DFT calculations, revealed pronounced π-electron delocalization over the hetarene backbones including the boron centers. With an extended series of derivatives of varying chain lengths available, we were able to determine the effective conjugation lengths (ECL) of poly(thienylborane)s and poly(furylborane)s, which have been reached with the highest-molecular-weight derivatives of our study. Through variation of the furan-to-thiophene ratio, the photophysical properties of these materials are effectively modulated. Significantly, higher furan contents lead to considerably increased fluorescence intensities. Compounds 1 aaTip , 1 bbTip , and 3 aTip showed the ability to bind fluoride anions. The binding process is signaled by a distinct change in their optical absorption characteristics, thus rendering these materials attractive targets for sensory applications.
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Affiliation(s)
- Artur Lik
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52056, Aachen, Germany
| | - Sangeth Jenthra
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52056, Aachen, Germany
| | - Lars Fritze
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52056, Aachen, Germany
| | - Lars Müller
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52056, Aachen, Germany
| | - Khai-Nghi Truong
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52056, Aachen, Germany
| | - Holger Helten
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52056, Aachen, Germany
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46
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Affiliation(s)
- Yohei Adachi
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
| | - Joji Ohshita
- Department of Applied Chemistry, Graduate School of Engineering, Hiroshima University, Higashi-Hiroshima 739-8527, Japan
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47
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Zhang J, Liu F, Sun Z, Li C, Zhang Q, Zhang C, Liu Z, Liu X. Synthesis, characterization and properties of aryl-fused bis-BN dihydropyrenes. Chem Commun (Camb) 2018; 54:8178-8181. [DOI: 10.1039/c8cc01748d] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of aryl-fused bis-BN dihydropyrenes are synthesized, their photophysical properties are fully investigated by experimental and theoretical calculations.
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Affiliation(s)
- Jinyun Zhang
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion
- School of Chemistry and Chemical Engineering
- Tianjin University of Technology
- Tianjin 300384
- People's Republic of China
| | - Fude Liu
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion
- School of Chemistry and Chemical Engineering
- Tianjin University of Technology
- Tianjin 300384
- People's Republic of China
| | - Zhe Sun
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion
- School of Chemistry and Chemical Engineering
- Tianjin University of Technology
- Tianjin 300384
- People's Republic of China
| | - Chenglong Li
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion
- School of Chemistry and Chemical Engineering
- Tianjin University of Technology
- Tianjin 300384
- People's Republic of China
| | - Qian Zhang
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion
- School of Chemistry and Chemical Engineering
- Tianjin University of Technology
- Tianjin 300384
- People's Republic of China
| | - Chen Zhang
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion
- School of Chemistry and Chemical Engineering
- Tianjin University of Technology
- Tianjin 300384
- People's Republic of China
| | - Zhiqiang Liu
- State Key Laboratory of Crystal Materials
- Shandong University
- Jinan 250100
- People's Republic of China
| | - Xuguang Liu
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion
- School of Chemistry and Chemical Engineering
- Tianjin University of Technology
- Tianjin 300384
- People's Republic of China
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48
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Riensch NA, Fritze L, Schindler T, Kremer M, Helten H. Difuryl(supermesityl)borane: a versatile building block for extended π-conjugated materials. Dalton Trans 2018; 47:10399-10403. [DOI: 10.1039/c8dt01716f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
B-Doping of oligo(hetarene)s led to very robust, air-stable π-conjugated materials that are strong electron-acceptors and blue light emitters.
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Affiliation(s)
- Nicolas A. Riensch
- Institute of Inorganic Chemistry
- RWTH Aachen University
- 52056 Aachen
- Germany
| | - Lars Fritze
- Institute of Inorganic Chemistry
- RWTH Aachen University
- 52056 Aachen
- Germany
| | - Tobias Schindler
- Institute of Inorganic Chemistry
- RWTH Aachen University
- 52056 Aachen
- Germany
| | - Marius Kremer
- Institute of Inorganic Chemistry
- RWTH Aachen University
- 52056 Aachen
- Germany
| | - Holger Helten
- Institute of Inorganic Chemistry
- RWTH Aachen University
- 52056 Aachen
- Germany
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49
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Ando N, Kushida T, Yamaguchi S. A planarized B-phenyldibenzoborepin: impact of structural constraint on its electronic properties and Lewis acidity. Chem Commun (Camb) 2018; 54:5213-5216. [DOI: 10.1039/c8cc02837k] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Planarization of B-phenyldibenzo[b,f]borepin allows π-expansion across the B-phenyl group and makes this scaffold a useful electron-accepting unit for donor-π-acceptor type fluorophores.
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Affiliation(s)
- Naoki Ando
- Department of Chemistry
- Graduate School of Science
- Nagoya University
- Furo
- Chikusa
| | - Tomokatsu Kushida
- Department of Chemistry
- Graduate School of Science
- Nagoya University
- Furo
- Chikusa
| | - Shigehiro Yamaguchi
- Department of Chemistry
- Graduate School of Science
- Nagoya University
- Furo
- Chikusa
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50
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Wang S, Yuan K, Hu MF, Wang X, Peng T, Wang N, Li QS. Cleavage of Unstrained C−C Bonds in Acenes by Boron and Light: Transformation of Naphthalene into Benzoborepin. Angew Chem Int Ed Engl 2017; 57:1073-1077. [DOI: 10.1002/anie.201711658] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Suning Wang
- 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; 5 South Zhongguancun Street Beijing P. R. China
- Department of Chemistry; Queen's University; Kingston Ontario K7L 3N6 Canada
| | - Kang Yuan
- Department of Chemistry; Queen's University; Kingston Ontario K7L 3N6 Canada
| | - Ming-Feng Hu
- 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; 5 South Zhongguancun Street Beijing P. R. China
| | - Xiang Wang
- Department of Chemistry; Queen's University; Kingston Ontario K7L 3N6 Canada
| | - Tai Peng
- 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; 5 South Zhongguancun Street Beijing P. R. China
| | - Nan Wang
- 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; 5 South Zhongguancun Street Beijing P. R. China
| | - Quan-Song Li
- 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; 5 South Zhongguancun Street Beijing P. R. China
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