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Ikeno A, Hayakawa M, Sakai M, Tsutsui Y, Nakatsuka S, Seki S, Hatakeyama T. π-Extended 9b-Boraphenalenes: Synthesis, Structure, and Physical Properties. J Am Chem Soc 2024; 146:17084-17093. [PMID: 38861619 DOI: 10.1021/jacs.4c02407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2024]
Abstract
Boraphenalenes, compounds in which one carbon atom in the phenalenyl skeleton is replaced with a boron atom, have attracted attention for their solid-state and electronic structures; however, the construction of boraphenalene skeletons remains challenging because of the lack of suitable methods. Through this study, we showed that the tandem borylative cyclization of C3-symmetric dehydrobenzo[12]annulenes produces a new class of fully fused boron-atom-embedded polycyclic hydrocarbons possessing a 9b-boraphenalene skeleton. The obtained compounds exhibited high electron-accepting characteristics, and their two-step redox process was reversible in the reductive region, involving interconversion of 9b-boraphenalene between Hückel aromaticity and antiaromaticity. Notably, the benzo[b]fluorene-fused derivative exhibited a stepwise single-crystal-to-single-crystal (SCSC) phase transition triggered by thermal annealing. Intermolecular electron coupling calculation of the crystal structures suggested a significant improvement of charge transporting ability associated with the SCSC phase transition. Moreover, adequate photoconductivity was observed for the single crystals before and after the SCSC phase transition through flash photolysis-time-resolved microwave conductivity.
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Affiliation(s)
- Atsuhiro Ikeno
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Masahiro Hayakawa
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Mugiho Sakai
- Department of Chemistry, Graduate School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan
| | - Yusuke Tsutsui
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Nishikyo-ku, Kyoto 615-8510, Japan
| | - Soichiro Nakatsuka
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
| | - Shu Seki
- Department of Molecular Engineering, Graduate School of Engineering, Kyoto University Nishikyo-ku, Kyoto 615-8510, Japan
| | - Takuji Hatakeyama
- Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-ku, Kyoto 606-8502, Japan
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2
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Aota N, Nakagawa R, de Sousa LE, Tohnai N, Minakata S, de Silva P, Takeda Y. Anion-Responsive Colorimetric and Fluorometric Red-Shift in Triarylborane Derivatives: Dual Role of Phenazaborine as Lewis Acid and Electron Donor. Angew Chem Int Ed Engl 2024; 63:e202405158. [PMID: 38587303 DOI: 10.1002/anie.202405158] [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: 03/15/2024] [Revised: 04/07/2024] [Accepted: 04/08/2024] [Indexed: 04/09/2024]
Abstract
Photophysical modulation of triarylboranes (TABs) through Lewis acid-base interactions is a fundamental approach for sensing anions. Yet, design principles for anion-responsive TABs displaying significant red-shift in absorption and photoluminescence (PL) have remained elusive. Herein, a new strategy for modulating the photophysical properties of TABs in a red-shift mode has been presented, by using a nitrogen-bridged triarylborane (1,4-phenazaborine: PAzB) with a contradictory dual role as a Lewis acid and an electron donor. Following the strategy, PAzB derivatives connected with an electron-deficient azaaromatic have been developed, and these compounds display a distinct red-shift in their absorption and PL in response to an anion. Spectroscopic analyses and quantum chemical calculations have revealed the formation of a tetracoordinate borate upon the addition of fluoride, narrowing the HOMO-LUMO gap and enhancing the charge-transfer character in the excited state. This approach has also been demonstrated in modulating the photophysical properties of solid-state films.
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Affiliation(s)
- Nae Aota
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Riku Nakagawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Leonardo Evaristo de Sousa
- Department of Energy Conversion and Storage, Technical University of Denmark, Anker Engelunds Vej 301, 2800, Kongens Lyngby, Denmark
| | - Norimitsu Tohnai
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Satoshi Minakata
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
| | - Piotr de Silva
- Department of Energy Conversion and Storage, Technical University of Denmark, Anker Engelunds Vej 301, 2800, Kongens Lyngby, Denmark
| | - Youhei Takeda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Yamadaoka 2-1, Suita, Osaka 565-0871, Japan
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3
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Thilagar P, Nandi RP, Ghosh S. Heteroatom-Promoted Polyhexagonal Saddle-Shaped Molecular Structures and their Supramolecular Coassembly with C 60. Chemistry 2024; 30:e202400398. [PMID: 38549365 DOI: 10.1002/chem.202400398] [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: 03/01/2024] [Indexed: 05/15/2024]
Abstract
Molecules with curved architecture can exhibit unique optoelectronic properties due to the concave-convex π-surface. However, synthesizing negatively curved saddle-shaped aromatic systems has been challenging due to the internal structural strain. Herein, we report the facile synthesis of two polyhexagonal molecular systems, 1 and 2, with saddle shape geometry by judiciously varying the aromatic moiety, avoiding the harsh synthetic methods as that of heptagonal aromatic saddle systems. The unique geometry preferences of B, N, and S furnish suitable curvature to the molecules, featuring saddle shape. The saddle geometry also enables them to interact with fullerene C60 , and the supramolecular interactions of fullerene C60 with 1 and 2 modify their optoelectronic properties. Crystal structure analysis reveals that 1, with a small π-surface, forms a double columnar array of fullerenes in the solid state. In contrast, 2 with a large π-surface produces a supramolecular capsule entrapping two discrete fullerenes. The intermolecular interactions between B, N, S, and the aryl-π surface of the host and C60 guest are the stabilizing factors for creating these supramolecular structures. Comprehensive computational, optical, and Raman spectroscopic studies establish the charge transfer interactions between B-N doped heterocycle host and fullerene C60 guest.
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Affiliation(s)
- Pakkirisamy Thilagar
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560012, India
| | - Rajendra Prasad Nandi
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560012, India
| | - Subhajit Ghosh
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore, 560012, India
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4
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Beckmann JL, Neumann B, Stammler HG, Lamm JH, Mitzel NW. Bidentate boron Lewis acids: synthesis by tin boron exchange reaction and host-guest complex formation. Dalton Trans 2024; 53:7958-7964. [PMID: 38647186 DOI: 10.1039/d4dt00782d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Four bidentate boron Lewis acids based on the 1,8-diethynylanthracene backbone have been synthesized by a tin-boron exchange reaction with various chloroboranes, yielding the products in good to excellent yields. Complexation experiments of the host compounds with pyridine, pyrimidine and TMEDA demonstrated striking differences in terms of formation and solubility of the supramolecular adducts. The host-guest complexes were investigated by multinuclear NMR spectroscopy and structurally characterized by X-ray diffraction experiments, illustrating the adaptation of the host system upon adduct formation with different neutral guest molecules.
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Affiliation(s)
- J Louis Beckmann
- Chair of Inorganic and Structural Chemistry, Center for Molecular Materials CM2, Faculty of Chemistry, University of Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany.
| | - Beate Neumann
- Chair of Inorganic and Structural Chemistry, Center for Molecular Materials CM2, Faculty of Chemistry, University of Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany.
| | - Hans-Georg Stammler
- Chair of Inorganic and Structural Chemistry, Center for Molecular Materials CM2, Faculty of Chemistry, University of Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany.
| | - Jan-Hendrik Lamm
- Chair of Inorganic and Structural Chemistry, Center for Molecular Materials CM2, Faculty of Chemistry, University of Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany.
| | - Norbert W Mitzel
- Chair of Inorganic and Structural Chemistry, Center for Molecular Materials CM2, Faculty of Chemistry, University of Bielefeld, Universitätsstraße 25, 33615 Bielefeld, Germany.
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5
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Beagan DM, Kiernicki JJ, Zeller M, Szymczak NK. A Bidentate Ligand Featuring Ditopic Lewis Acids in the Second Sphere for Selective Substrate Capture and Activation. Angew Chem Int Ed Engl 2023; 62:e202218907. [PMID: 36720708 PMCID: PMC10023486 DOI: 10.1002/anie.202218907] [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: 12/21/2022] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 02/02/2023]
Abstract
We present a ligand platform featuring appended ditopic Lewis acids to facilitate capture/activation of diatomic substrates. We show that incorporation of two 9-borabicyclo[3.3.1]nonane (9-BBN) units on a single carbon tethered to a pyridine pyrazole scaffold maintains a set of unquenched nitrogen donors available to coordinate FeII , ZnII , and NiII . Using hydride ion affinity and competition experiments, we establish an additive effect for ditopic secondary sphere boranes, compared to the monotopic analogue. These effects are exploited to achieve high selectivity for binding NO2 - in the presence of competitive anions such as F- and NO3 - . Finally, we demonstrate hydrazine capture within the second-sphere of metal complexes, followed by unique activation pathways to generate hydrazido and diazene ligands on Zn and Fe, respectively.
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Affiliation(s)
- Daniel M Beagan
- Department of Chemistry, University of Michigan, 930 N. University, Ann Arbor, MI 48109, USA
| | - John J Kiernicki
- Department of Chemistry, University of Michigan, 930 N. University, Ann Arbor, MI 48109, USA
- Present address: Drury University, Department of Chemistry and Physics, 900 North Benton Ave., Springfield, MO 65802, USA
| | - Matthias Zeller
- H.C. Brown Laboratory, Department of Chemistry, Purdue University, 560 Oval Dr., West Lafayette, IN 47907, USA
| | - Nathaniel K Szymczak
- Department of Chemistry, University of Michigan, 930 N. University, Ann Arbor, MI 48109, USA
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6
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Boyet M, Chabaud L, Pucheault M. Recent Advances in the Synthesis of Borinic Acid Derivatives. Molecules 2023; 28:molecules28062660. [PMID: 36985634 PMCID: PMC10057197 DOI: 10.3390/molecules28062660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/03/2023] [Accepted: 03/08/2023] [Indexed: 03/18/2023] Open
Abstract
Borinic acids [R2B(OH)] and their chelate derivatives are a subclass of organoborane compounds used in cross-coupling reactions, catalysis, medicinal chemistry, polymer or optoelectronics materials. In this paper, we review the recent advances in the synthesis of diarylborinic acids and their four-coordinated analogs. The main strategies to build up borinic acids rely either on the addition of organometallic reagents to boranes (B(OR)3, BX3, aminoborane, arylboronic esters) or the reaction of triarylboranes with a ligand (diol, amino alcohol, etc.). After general practical considerations of borinic acids, an overview of the main synthetic methods, their scope and limitations is provided. We also discuss some mechanistic aspects.
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7
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Booth AC, Vasko P, Fuentes MÁ, Cornelissen B, Faulkner S, Aldridge S. Boronic ester functionalised 1,8-diboryl-naphthalene scaffolds: fluoride versus oxide chelation. Dalton Trans 2022; 51:15783-15791. [PMID: 36189491 DOI: 10.1039/d2dt02888c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
1,8-Bis(boronic ester) derivatives of naphthalene, 1,8-C10H6{B(OR)2}2, present an attractive target as receptors for the fluoride ion via B-F-B chelation, but are synthetically challenging to access due to the competing formation of a very stable anhydride containing a B-O-B motif. By contrast, unsymmetrical systems of the type 1,8-C10H6{B(OR)2}(BR'2) can be synthesized for (OR)2 = 1,2-O2C6H4 (i.e. Cat) and R' = Mes. This system is shown to be competent for the uptake of F-, making use of a chelating mode of action and the formation of a bridging B-F-B motif between the two boron centres. However, both experimental and quantum chemical studies indicate that the μ2-F adduct is the kinetic product of fluoride uptake, with an alternative structural motif featuring a terminal B-F bond and a B-O-B bridge using one of the catechol oxygens being (marginally) more favourable thermodynamically.
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Affiliation(s)
- Anna C Booth
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK.
| | - Petra Vasko
- Department of Chemistry, University of Helsinki, PO Box 55, 00014, Helsinki, Finland
| | - M Ángeles Fuentes
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK.
| | - Bart Cornelissen
- Medical Research Council Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Oxford, UK
| | - Stephen Faulkner
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK.
| | - Simon Aldridge
- Inorganic Chemistry Laboratory, Department of Chemistry, University of Oxford, South Parks Road, Oxford, OX1 3QR, UK.
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8
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Shimada J, Tani A, Hanazato C, Masuyama T, Yamamoto Y, Kawachi A. Synthesis of B/Si Bidentate Lewis Acids, o-(Fluorosilyl)borylbenzenes and o-(Difluorosilyl)borylbenzenes, and Their Fluoride Ion Affinities. ACS OMEGA 2022; 7:30939-30953. [PMID: 36092602 PMCID: PMC9453949 DOI: 10.1021/acsomega.2c02775] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 08/10/2022] [Indexed: 06/15/2023]
Abstract
Herein, we report detailed studies on a series of o-(silyl)(boryl)benzenes (1-4), in which the two Lewis acid centers consisting of silicon and boron atoms are linked via an o-phenylene skeleton. o-(Fluorosilyl)(dimesitylboryl)benzenes 1 and 2 were prepared by the reaction of fluorodimesitylborane with [o-(fluorodimethylsilyl)phenyl]lithium (7) and [o-(fluorodiphenylsilyl)phenyl]lithium (8), respectively. o-(Difluorosilyl)(dimesitylboryl)benzenes 3 and 4 were also prepared by the reaction of fluorodimesitylborane with o-{[di(methoxy)methylsilyl]phenyl}lithium (11) and o-{[di(methoxy)phenylsilyl]phenyl}lithium (12), respectively, and their subsequent treatment with HF·pyridine. Compounds 1-4 readily capture a fluoride ion in the presence of 18-crown-6 or [2.2.2]cryptand to afford their corresponding μ-fluoro-bridged ate complexes (15-18). The structures of 15-18 were revealed by NMR spectroscopy and X-ray crystallography. DFT studies and natural bond orbital analysis of 15-18 were conducted to elucidate the nature of the Si-F and B-F bonding interactions in the μ-fluoro-bridges. The fluoride ion affinities of 1-4 were investigated by 1H NMR spectroscopy to monitor their competitive reactions. The dynamic behaviors of 15-18 at variable temperatures were monitored using 19F NMR spectroscopy.
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Affiliation(s)
- Junpei Shimada
- Department
of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Atsushi Tani
- Department
of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Chihiro Hanazato
- Faculty
of Bioscience and Applied Chemistry, Hosei
University, 3-7-2 Kajino-cho, Koganei, Tokyo 184-8584, Japan
| | - Takashi Masuyama
- Faculty
of Bioscience and Applied Chemistry, Hosei
University, 3-7-2 Kajino-cho, Koganei, Tokyo 184-8584, Japan
| | - Yohsuke Yamamoto
- Department
of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
| | - Atsushi Kawachi
- Department
of Chemistry, Graduate School of Science, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan
- Faculty
of Bioscience and Applied Chemistry, Hosei
University, 3-7-2 Kajino-cho, Koganei, Tokyo 184-8584, Japan
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9
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Sakai M, Mori M, Hirai M, Ando N, Yamaguchi S. Planarized Phenyldithienylboranes: Effects of the Bridging Moieties and π‐Extension on the Photophysical Properties and Lewis Acidity. Chemistry 2022; 28:e202200728. [DOI: 10.1002/chem.202200728] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Indexed: 12/14/2022]
Affiliation(s)
- Mika Sakai
- Department of Chemistry Graduate School of Science Research Center for Materials Science (RCMS), and Integrated Research Consortium on Chemical Sciences (IRCCS) Nagoya University Furo, Chikusa Nagoya 464-8602 Japan
| | - Masayoshi Mori
- Department of Chemistry Graduate School of Science Research Center for Materials Science (RCMS), and Integrated Research Consortium on Chemical Sciences (IRCCS) Nagoya University Furo, Chikusa Nagoya 464-8602 Japan
| | - Masato Hirai
- Institute of Transformative Bio-Molecules (WPI-ITbM) Nagoya University Furo, Chikusa Nagoya 464-8601 Japan
| | - Naoki Ando
- Department of Chemistry Graduate School of Science Research Center for Materials Science (RCMS), and Integrated Research Consortium on Chemical Sciences (IRCCS) Nagoya University Furo, Chikusa Nagoya 464-8602 Japan
| | - Shigehiro Yamaguchi
- Department of Chemistry Graduate School of Science Research Center for Materials Science (RCMS), and Integrated Research Consortium on Chemical Sciences (IRCCS) Nagoya University Furo, Chikusa Nagoya 464-8602 Japan
- Institute of Transformative Bio-Molecules (WPI-ITbM) Nagoya University Furo, Chikusa Nagoya 464-8601 Japan
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10
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Liu WC, Gabbai F. Fluoride ion sensing with an acridinium borane. CAN J CHEM 2022. [DOI: 10.1139/cjc-2022-0080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
With our continuing interest in the chemistry of cationic boranes, we have synthesizedthe tetrafluoroborate salt of 1-dimesitylboron-4-(N-methyl-9-acridinium)-phenylene which acts as a turn-on fluoride anion sensor, visibly changing from yellow to orange upon binding fluoride. To understand this reactivity, we spectroscopically and computationally analyzed the cation and triarylfluoroborate adduct. UV-vis spectroscopy and TD-DFT revealed the basis of the color change to be a red shift in a low-energy absorption band resulting from intramolecular charge-transfer. Electrochemical studies were undertaken to further probe this system. Cyclic voltammetry indicated a reversible one-electron reduction for the cation and a cathodic shift of -0.12 V in the first reduction wave upon fluoride binding. Chemical reduction of the cation yielded the acridine borane radical which was verified by EPR spectroscopy.
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Affiliation(s)
- Wei-Chun Liu
- Texas A&M University, 14736, Department of Chemistry, College Station, United States
| | - Francois Gabbai
- Texas A&M University, 14736, Department of Chemistry, College Station, United States
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11
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Tian X, Guo J, Sun W, Yuan L, Dou C, Wang Y. Tuning Diradical Properties of Boron-Containing π-Systems by Structural Isomerism. Chemistry 2022; 28:e202200045. [PMID: 35146820 DOI: 10.1002/chem.202200045] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2022] [Indexed: 01/01/2023]
Abstract
Tuning diradical character is an important topic for organic diradicaloids. Herein, we report the precise borylation enabling structural isomerism as an effective strategy to modulate diradical character and thereby properties of organic diradicaloids. We synthesized a new B-containing polycyclic hydrocarbon that has the indeno[1,2-b]fluorene π-skeleton with the β-carbons bonding to two boron atoms. Detailed theoretical and experimental results show that this bonding pattern leads to its distinctive electronic structures and properties in comparison to that of its isomeric molecule. This molecule has the efficient conjugation between boron atoms and π-skeleton, resulting in downshifted LUMO and HOMO levels. Moreover, it exhibits smaller diradical character and thereby inhibited diradical properties, such as significantly blue-shifted light absorption, larger energy bandgap and weak para-magnetic resonance. Notably, this B-containing polycyclic hydrocarbon possesses much stronger Lewis acidity and its Lewis acid-base adducts display enhanced diradical character, demonstrating the positive effects of Lewis coordination on modulating diradical performance.
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Affiliation(s)
- Xinyu Tian
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Jiaxiang Guo
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Wenting Sun
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Liuzhong Yuan
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Chuandong Dou
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Yue Wang
- State Key Laboratory of Supramolecular Structure and Materials College of Chemistry, Jilin University, Changchun, 130012, P. R. China
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12
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Turkoglu G, Ozturk T. Fluorescent small molecules with alternating triarylamine-substituted selenophenothiophene and triarylborane: synthesis, photophysical properties and anion sensing studies. Dalton Trans 2022; 51:2715-2725. [PMID: 35080223 DOI: 10.1039/d1dt03681e] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Two novel D-π-A fluorophores based on selenopheno[3,2-b]thiophene, possessing triphenylamine and 4,4'-dimethoxytriphenylamine units as donors and dimesitylborane as an acceptor, linked through a π-conjugated thiophene spacer (BTPAST and BOMeTPAST, respectively) were synthesized. Their photophysical properties were investigated in both solution and the state of aggregation and compared to those of their corresponding donor parts, having no dimesitylborane units (TPAST and OMeTPAST). All the compounds displayed large Stokes shifts between 100 and 140 nm with positive solvatochromism in solvents having different polarities. While BTPAST displayed both aggregation induced emission (AIE) and twisted intramolecular charge transfer (TICT) characteristics, the others preponderated with TICT effects. The sensing abilities of BTPAST and BOMeTPAST towards different anions were studied. Both exhibited chromogenic and fluorogenic responses to small anions such as fluoride and cyanide, for which the detection limits were found to be 0.12 and 2.43 ppm with BTPAST and 0.59 and 0.92 ppm with BOMeTPAST, respectively. These results provide guidance for the development of novel fused selenophenothiophene sensors in the field of anion sensing.
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Affiliation(s)
- Gulsen Turkoglu
- Department of Chemistry, Faculty of Science, Istanbul Technical University, Maslak, Istanbul 34469, Turkey.
| | - Turan Ozturk
- Department of Chemistry, Faculty of Science, Istanbul Technical University, Maslak, Istanbul 34469, Turkey. .,TUBITAK-UME, Chemistry Group Laboratories, PO Box 54, 41471, Gebze, Kocaeli, Turkey
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13
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Rudlof J, Glodde T, Mix A, Neumann B, Stammler H, Mitzel NW. Synthesis of Bifunctional Boron‐Lewis Acids – Thorough Investigation of the Adduct Formation with Pyrimidine. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202100842] [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)
- Jens Rudlof
- Chair of Inorganic and Structural Chemistry Bielefeld University Universitätsstraße 25 33615 Bielefeld Germany
| | - Timo Glodde
- Chair of Inorganic and Structural Chemistry Bielefeld University Universitätsstraße 25 33615 Bielefeld Germany
| | - Andreas Mix
- Chair of Inorganic and Structural Chemistry Bielefeld University Universitätsstraße 25 33615 Bielefeld Germany
| | - Beate Neumann
- Chair of Inorganic and Structural Chemistry Bielefeld University Universitätsstraße 25 33615 Bielefeld Germany
| | - Hans‐Georg Stammler
- Chair of Inorganic and Structural Chemistry Bielefeld University Universitätsstraße 25 33615 Bielefeld Germany
| | - Norbert W. Mitzel
- Chair of Inorganic and Structural Chemistry Bielefeld University Universitätsstraße 25 33615 Bielefeld Germany
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14
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Guo J, Yang Y, Dou C, Wang Y. Boron-Containing Organic Diradicaloids: Dynamically Modulating Singlet Diradical Character by Lewis Acid-Base Coordination. J Am Chem Soc 2021; 143:18272-18279. [PMID: 34664955 DOI: 10.1021/jacs.1c08486] [Citation(s) in RCA: 64] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Organic diradicaloids have unique open-shell structures and properties and promising applications in organic electronics and spintronics. Incorporation of heteroatoms is an effective strategy to alter the electronic structures of organic diradicaloids. However, B-containing organic diradicaloids are very challenging due to their high reactivities, which are caused by not only diradical nature but also the B atom. In this article, we report a new kind of organic diradicaloids containing boron atoms. Our strategy is to incorporate planarized triarylboranes to antiaromatic polycyclic hydrocarbons (PHs). We synthesized two isomeric B-containing PHs composed of indenofluorene π-skeletons and two dioxa-bridged triphenylborane moieties. As proved by theoretical and experimental results, both of them have excellent ambient stability and open-shell singlet diradical structures, as well as intriguing magnetic and optoelectronic properties, such as thermally accessible triplet species, reversible multiredox ability, and narrow energy gaps. Notably, they possess sufficient Lewis acidity, which has never been observed for organic diradicaloids. In addition, they can coordinate with Lewis bases to form Lewis adducts, achieving unprecedented dynamic modulations of (anti)aromaticity and thus diradical character of organic diradicaloids.
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Affiliation(s)
- Jiaxiang Guo
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China
| | - Yue Yang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China
| | - Chuandong Dou
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China
| | - Yue Wang
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Changchun 130012, People's Republic of China
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15
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Dzhemilev UM, Khusainova LI, Ryazanov KS, Khafizova LO. Boron-containing small rings: synthesis, properties, and application prospects. Russ Chem Bull 2021. [DOI: 10.1007/s11172-021-3292-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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16
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Liao G, Chen X, Qiao Y, Liu K, Wang N, Chen P, Yin X. Highly Electron-Deficient Dicyanomethylene-Functionalized Triarylboranes with Low-Lying LUMO and Strong Lewis Acidity. Org Lett 2021; 23:5836-5841. [PMID: 34251839 DOI: 10.1021/acs.orglett.1c01983] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A series of dicyanomethylene-functionalized triarylboranes is reported in this work, with low-lying LUMO energy levels at ca. -3.66 eV for FMesB-ACN. The single-crystal structures of the mono- and dianion of Mes*B-ACN were obtained via chemical reduction, which revealed a conversion from a quinoidal to an aromatic structure. The strong Lewis acidity of these compounds is reflected in a fluoride-anion binding experiment. This work introduces a facile strategy for modulating the electron deficiency of boron-containing compounds.
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Affiliation(s)
- Guanming Liao
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China.,School of Chemistry and Chemical Engineering, Jiangxi Science and Technology Normal University, Nanchang, Jiangxi 330013, P. R. China
| | - Xing Chen
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
| | - Yali Qiao
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Green Printing, CAS Research/Education Centre for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (ICCAS), Beijing 100190, P. R. China
| | - Kanglei Liu
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, 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, Beijing 102488, P. R. China
| | - Pangkuan Chen
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
| | - Xiaodong Yin
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing 102488, P. R. China
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17
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You D, Zhou B, Hirai M, Gabbaï FP. Distiboranes based on ortho-phenylene backbones as bidentate Lewis acids for fluoride anion chelation. Org Biomol Chem 2021; 19:4949-4957. [PMID: 33988214 DOI: 10.1039/d1ob00536g] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
As part of our efforts in the chemistry of main group platforms that support anion sensing and transport, we are now reporting the synthesis of anitmony-based bidentate Lewis acids featuring the o-C6F4 backbone. These compounds can be easily accessed by reaction of the newly synthesized o-C6F4(SbPh2)2 (5) with o-chloranil or octafluorophenanthra-9,10-quinone, affording the corresponding distiboranes 6 and 7 of general formula o-C6F4(SbPh2(diolate))2 with diolate = tetrachlorocatecholate for 6 and octafluorophenanthrene-9,10-diolate for 7, respectively. While 6 is very poorly soluble, its octafluorophenanthrene-9,10-diolate analog 7 readily dissolves in CH2Cl2 and undergoes swift conversion into the corresponding fluoride chelate complex [7-μ2-F]- which has been isolated as a [nBu4N]+ salt. The o-C6H4 analog of 7, referred to as 8, has also been prepared. Although less Lewis acidic than 7, 8 also forms a very stable fluoride chelate complex ([8-μ2-F]-). Altogether, our experiental results, coupled with computational analyses and fluoride anion affinity calculations, show that 7 and 8 are some of the strongest antimony-based fluoride anion chelators prepared to date. Another notable aspect of this work concerns the use of the octafluorophenanthrene-9,10-diolate ligand and its ablity to impart advantageous solubility and Lewis acidity properties.
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Affiliation(s)
- Di You
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA.
| | - Benyu Zhou
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA.
| | - Masato Hirai
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA.
| | - François P Gabbaï
- Department of Chemistry, Texas A&M University, College Station, TX 77843, USA.
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18
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Niermeier P, Maibom KAM, Lamm JH, Neumann B, Stammler HG, Mitzel NW. Hydrogen-bond-induced selectivity of a head-to-head photo-dimerisation of dialkynylanthracene - access to tetradentate Lewis acids. Chem Sci 2021; 12:7943-7952. [PMID: 34257857 PMCID: PMC8230024 DOI: 10.1039/d1sc02065j] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Accepted: 05/06/2021] [Indexed: 11/21/2022] Open
Abstract
Using 2-hydroxypropyl-protecting groups, 1,8-dialkynylanthracene photo-dimers were prepared in head-to-head-configuration by UV irradiation on a multi-gram scale. In non-polar solvents, the combination of non-covalent hydrogen bonds and π-π-interactions induces the formation of the syn-isomer in up to 85% yield. Instead, more polar solvents or irradiation of unprotected 1,8-diethynylanthracene led to formation of the corresponding anti-isomer in large excess. Cleavage of the protecting groups under basic conditions affords a rigid hydrocarbon skeleton with four directional functions. This was used as a building block for a tetradentate boron Lewis acid. Its applicability as a host for Lewis-base substrates was demonstrated by the formation of adducts with various nitrogen bases. Adduct formation with hydrazine leads to impressive networks between the tetraboron host and the substrate molecules.
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Affiliation(s)
- Philipp Niermeier
- Universität Bielefeld, Fakultät für Chemie, Lehrstuhl für Anorganische Chemie und Strukturchemie (ACS), Centre for Molecular Materials (CM2) Universitätsstr. 25 D-33615 Bielefeld Germany https://www.uni-bielefeld.de/fakultaeten/chemie/ag/ac3-mitzel/
| | - Kristina A M Maibom
- Universität Bielefeld, Fakultät für Chemie, Lehrstuhl für Anorganische Chemie und Strukturchemie (ACS), Centre for Molecular Materials (CM2) Universitätsstr. 25 D-33615 Bielefeld Germany https://www.uni-bielefeld.de/fakultaeten/chemie/ag/ac3-mitzel/
| | - Jan-Hendrik Lamm
- Universität Bielefeld, Fakultät für Chemie, Lehrstuhl für Anorganische Chemie und Strukturchemie (ACS), Centre for Molecular Materials (CM2) Universitätsstr. 25 D-33615 Bielefeld Germany https://www.uni-bielefeld.de/fakultaeten/chemie/ag/ac3-mitzel/
| | - Beate Neumann
- Universität Bielefeld, Fakultät für Chemie, Lehrstuhl für Anorganische Chemie und Strukturchemie (ACS), Centre for Molecular Materials (CM2) Universitätsstr. 25 D-33615 Bielefeld Germany https://www.uni-bielefeld.de/fakultaeten/chemie/ag/ac3-mitzel/
| | - Hans-Georg Stammler
- Universität Bielefeld, Fakultät für Chemie, Lehrstuhl für Anorganische Chemie und Strukturchemie (ACS), Centre for Molecular Materials (CM2) Universitätsstr. 25 D-33615 Bielefeld Germany https://www.uni-bielefeld.de/fakultaeten/chemie/ag/ac3-mitzel/
| | - Norbert W Mitzel
- Universität Bielefeld, Fakultät für Chemie, Lehrstuhl für Anorganische Chemie und Strukturchemie (ACS), Centre for Molecular Materials (CM2) Universitätsstr. 25 D-33615 Bielefeld Germany https://www.uni-bielefeld.de/fakultaeten/chemie/ag/ac3-mitzel/
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19
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Xie DH, Ge X, Qin WX, Zhang YX. NH2-MIL-53(Al) for simultaneous removal and detection of fluoride anions. CHINESE J CHEM PHYS 2021. [DOI: 10.1063/1674-0068/cjcp2004054] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Dong-hua Xie
- Key Laboratory of Materials Physics, Center for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China
- University of Science and Technology of China, Hefei 230026, China
| | - Xiao Ge
- University of Science and Technology of China, Hefei 230026, China
| | - Wen-xiu Qin
- Key Laboratory of Materials Physics, Center for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China
| | - Yun-xia Zhang
- Key Laboratory of Materials Physics, Center for Environmental and Energy Nanomaterials, Anhui Key Laboratory of Nanomaterials and Nanotechnology, Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China
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20
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Sarkar SK, Rao SE, Thilagar P. Molecular Conformational Effect on Optical Properties and Fluoride Induced Color Changes in Triarylborane-Vinylbithiophene-BODIPY Conjugates. J Phys Chem B 2020; 124:8896-8903. [PMID: 32975933 DOI: 10.1021/acs.jpcb.0c07463] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Three new triads [bis(mesityl)boryl (Mes2B)-vinylbithiophene-BODIPY] bearing zero (1), two (2), and four (3) methyl groups on the BODIPY core are synthesized, and their optical properties are reported. The vinyl linker between the thiophene rings in the spacer moiety improved the electronic communication between the boryl and BODIPY units. It displayed a bathochromic shift in the absorption and emission spectra compared to the Mes2B-bithiophene-BODIPY triad reported elsewhere. These compounds exhibit intriguing multiple-emission features due to an incomplete energy transfer from donor borane to the acceptor BODIPY unit. These compounds' photoluminescence color can be conveniently fine-tuned by fluoride binding at the coordinatively unsaturated tricoordinate boron center. Triad 3, with a rigid molecular structure, showed a sharp emission band, whereas triads 1 and 2, with flexible molecular structures, displayed broad emission bands with a robust bathochromic shift, ascribed to their excited state structural reorganizations. These triads selectively bind fluoride ions and show colorimetric responses, which can be seen with an unaided eye. DFT computational studies were performed to rationalize the optical signatures of these compounds.
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Affiliation(s)
- Samir Kumar Sarkar
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Shilpa Eshwar Rao
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Pakkirisamy Thilagar
- Department of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
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21
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Avinash I, Parveen S, Anantharaman G. Backbone Boron-Functionalized Imidazoles/Imidazolium Salts: Synthesis, Structure, Metalation Studies, and Fluoride Sensing Properties. Inorg Chem 2020; 59:5646-5661. [DOI: 10.1021/acs.inorgchem.0c00348] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Iruthayaraj Avinash
- Department of Chemistry, Indian Institute of Technology, Kanpur, Uttar Pradesh 208016, India
| | - Sabeeha Parveen
- Department of Chemistry, Indian Institute of Technology, Kanpur, Uttar Pradesh 208016, India
| | - Ganapathi Anantharaman
- Department of Chemistry, Indian Institute of Technology, Kanpur, Uttar Pradesh 208016, India
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22
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Peng X, Liu X, Wang S, Guo X, Yan M, Xie J, Yang G. Temperature-sensitive triarylboron compounds based on naphthalene substituents. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2020; 226:117648. [PMID: 31629976 DOI: 10.1016/j.saa.2019.117648] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2019] [Revised: 09/29/2019] [Accepted: 10/08/2019] [Indexed: 06/10/2023]
Abstract
Since temperature is one of the most important physical parameters, it is of great significance to measure temperature with high space resolution and accuracy. Herein, a series of π-conjugated triarylboron compounds with temperature sensitivity based on naphthalene aromatic groups were designed and synthesized. Their photophysical properties were studied in detail by steady state absorption, emission spectroscopy and time-dependent density functional theory calculation. As the temperature increased, their emission spectra exhibited obvious blue shifts in liquid organic solvent, making ratiometric fluorescence sensing of temperature achievable.
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Affiliation(s)
- Xiaoman Peng
- Institute of Molecular Medicine (IMM), Renji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China.
| | - Xuan Liu
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China.
| | - Shuangqing Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China.
| | - Xudong Guo
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China
| | - Manling Yan
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China
| | - Jiao Xie
- School of Chemistry and Chemical Engineering, Hunan University of Science and Technology, Xiangtan, 411201, China
| | - Guoqiang Yang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Photochemistry, Institute of Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100190, China.
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23
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Murfin LC, Chiang K, Williams GT, Lyall CL, Jenkins ATA, Wenk J, James TD, Lewis SE. A Colorimetric Chemosensor Based on a Nozoe Azulene That Detects Fluoride in Aqueous/Alcoholic Media. Front Chem 2020; 8:10. [PMID: 32064247 PMCID: PMC7000628 DOI: 10.3389/fchem.2020.00010] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 01/07/2020] [Indexed: 01/16/2023] Open
Abstract
Colorimetry is an advantageous method for detecting fluoride in drinking water in a resource-limited context, e. g., in parts of the developing world where excess fluoride intake leads to harmful health effects. Here we report a selective colorimetric chemosensor for fluoride that employs an azulene as the reporter motif and a pinacolborane as the receptor motif. The chemosensor, NAz-6-Bpin, is prepared using the Nozoe azulene synthesis, which allows for its rapid and low-cost synthesis. The chemosensor gives a visually observable response to fluoride both in pure organic solvent and also in water/alcohol binary solvent mixtures.
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Affiliation(s)
- Lloyd C Murfin
- Department of Chemistry, University of Bath, Bath, United Kingdom
| | - Kirstie Chiang
- Department of Chemistry, University of Bath, Bath, United Kingdom.,School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, Singapore
| | | | - Catherine L Lyall
- Materials and Chemical Characterization (MC2), University of Bath, Bath, United Kingdom
| | - A Toby A Jenkins
- Department of Chemistry, University of Bath, Bath, United Kingdom
| | - Jannis Wenk
- Department of Chemical Engineering and Water Innovation & Research Centre, University of Bath, Bath, United Kingdom.,Centre for Sustainable Chemical Technologies, University of Bath, Bath, United Kingdom
| | - Tony D James
- Department of Chemistry, University of Bath, Bath, United Kingdom.,Centre for Sustainable Chemical Technologies, University of Bath, Bath, United Kingdom
| | - Simon E Lewis
- Department of Chemistry, University of Bath, Bath, United Kingdom.,Centre for Sustainable Chemical Technologies, University of Bath, Bath, United Kingdom
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24
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Lee H, Jana S, Kim J, Lee SU, Lee MH. Donor–Acceptor-Appended Triarylboron Lewis Acids: Ratiometric or Time-Resolved Turn-On Fluorescence Response toward Fluoride Binding. Inorg Chem 2020; 59:1414-1423. [DOI: 10.1021/acs.inorgchem.9b03159] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Heechai Lee
- Department of Chemistry, University of Ulsan, Ulsan 44610, Republic of Korea
| | - Saibal Jana
- Department of Chemistry, University of Liverpool, Crown Street, Liverpool L69 7ZD, United Kingdom
| | - Juhee Kim
- Department of Chemistry, University of Ulsan, Ulsan 44610, Republic of Korea
| | - Sang Uck Lee
- Department of Bionano Technology and Department of Chemical and Molecular Engineering, Hanyang University, Ansan 15588, Republic of Korea
| | - Min Hyung Lee
- Department of Chemistry, University of Ulsan, Ulsan 44610, Republic of Korea
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25
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Teerasarunyanon R, Wilkins LC, Park G, Gabbaï FP. Synthesis, structure and anion binding properties of 1,8-bis(dimesitylboryl)anthracene and its monoborylated analog. Dalton Trans 2019; 48:14777-14782. [PMID: 31552969 DOI: 10.1039/c9dt03238j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two boranes, 1-(dimesitylboryl)anthracene (1) and 1,8-bis(dimesitylboryl)anthracene (2), have been synthesized with the spectrophysical properties showing how the inclusion of one or two boron atoms progressively perturbs the π-system of the anthracene backbone. This perturbation is caused by conjugation of the anthracene-π* orbital with the vacant p-orbital on boron. Additionally, both 1 and 2 have a high affinity for fluoride and cyanide anions which are complexed in a 1 : 1 guest-host ratio. The mono-borane 1 is particularly well-suited for cyanide binding, displaying a binding constant of 3 × 107 in THF. Furthermore, as a result of their unique electronic structures, these boranes display a fluorescence response to fluoride anion characterized by a blue shift in the case of 1 and a red shift in the case of 2.
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26
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Yoshino J, Konishi S, Kanno R, Hayashi N, Higuchi H. An Azide-Substituted Triarylborane: A Key Compound for the Facile Synthesis of Fluorescent Triarylboranes Bearing Triazole Moieties as Connectable π-Conjugated System Linkages. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901151] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Junro Yoshino
- Graduate School of Science and Engineering; University of Toyama; 3190 Gofuku 930-8555 Toyama Toyama Japan
| | - Shota Konishi
- Graduate School of Science and Engineering; University of Toyama; 3190 Gofuku 930-8555 Toyama Toyama Japan
| | - Ryosei Kanno
- Graduate School of Innovative Life Science; University of Toyama; 3190 Gofuku 930-8555 Toyama Toyama Japan
| | - Naoto Hayashi
- Graduate School of Science and Engineering; University of Toyama; 3190 Gofuku 930-8555 Toyama Toyama Japan
| | - Hiroyuki Higuchi
- Graduate School of Science and Engineering; University of Toyama; 3190 Gofuku 930-8555 Toyama Toyama Japan
- Graduate School of Innovative Life Science; University of Toyama; 3190 Gofuku 930-8555 Toyama Toyama Japan
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27
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Radtke J, Lerner HW, Bolte M. Polymorphism and pseudosymmetry of 10,10'-oxybis(9-thia-10-hydro-10-boraanthracene). Acta Crystallogr E Crystallogr Commun 2019; 75:690-694. [PMID: 31110812 PMCID: PMC6505595 DOI: 10.1107/s205698901900522x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Accepted: 04/16/2019] [Indexed: 12/01/2022]
Abstract
We have encountered two polymorphs of the title compound, C24H16B2OS2, both of which display almost the same unit-cell parameters. Compound (I) crystallizes in the non-centrosymmetric space group P21 with four mol-ecules in the asymmetric unit. These mol-ecules are related by pseudosymmetry. As a result, the space group looks like P21/c, but the structure cannot be refined successfully in that space group. Compound (II) on the other hand crystallizes in the centrosymmetric space group P21/c with only two mol-ecules in the asymmetric unit. The crystals studied for (I) and (II) were both non-merohedral twins.
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Affiliation(s)
- Julian Radtke
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, 60438 Frankfurt am Main, Germany
| | - Hans-Wolfram Lerner
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, 60438 Frankfurt am Main, Germany
| | - Michael Bolte
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, 60438 Frankfurt am Main, Germany
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28
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Baek Y, Kwon Y, Maeng C, Lee JH, Hwang H, Lee KM, Lee PH. Pyrazinoindole-Based Lewis-Acid/Base Assembly: Intriguing Intramolecular Charge-Transfer Switching through the Dual-Sensing of Fluoride and Acid. J Org Chem 2019; 84:3843-3852. [PMID: 30675790 DOI: 10.1021/acs.joc.8b02942] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Pyrazinoindole-based Lewis-acid/base assemblies are prepared through the use of regioselective formal [3 + 3] cycloaddition reactions, and their intriguing photophysical properties are described. The assemblies exhibit strong emissions in THF solution, which are attributed to through-space intramolecular charge-transfer (ICT) transitions between the branched Lewis-acid/base moieties. Furthermore, these show ratiometric color-change responses in PL titration experiments, which give rise to new colors through turn-on emissions ascribable to ICT transitions that alternate between the pyrazinoindole units and each triarylboryl or amino moiety, a consequence of the binding of the fluoride or acid. Pieces of filter paper covered by these assemblies exhibited blue-shifted color changes when immersed in aqueous acidic solutions, suggesting that these are promising candidate indicators that detect acid through emissive color. Computational data for these assemblies and their corresponding adducts verify the existence of ICT transitions that alternate through fluoride or acid binding.
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Affiliation(s)
- Yonghyeon Baek
- Department of Chemistry and Institute for Molecular Science and Fusion Technology , Kangwon National University , Chuncheon 24341 , Kangwon , Republic of Korea.,National Creative Research Initiative Center for Catalytic Organic Reactions , Kangwon National University , Chuncheon 24341 , Kangwon , Republic of Korea
| | - Youngjae Kwon
- Department of Chemistry and Institute for Molecular Science and Fusion Technology , Kangwon National University , Chuncheon 24341 , Kangwon , Republic of Korea
| | - Chanyoung Maeng
- Department of Chemistry and Institute for Molecular Science and Fusion Technology , Kangwon National University , Chuncheon 24341 , Kangwon , Republic of Korea.,National Creative Research Initiative Center for Catalytic Organic Reactions , Kangwon National University , Chuncheon 24341 , Kangwon , Republic of Korea
| | - Ji Hye Lee
- Department of Chemistry and Institute for Molecular Science and Fusion Technology , Kangwon National University , Chuncheon 24341 , Kangwon , Republic of Korea
| | - Hyonseok Hwang
- Department of Chemistry and Institute for Molecular Science and Fusion Technology , Kangwon National University , Chuncheon 24341 , Kangwon , Republic of Korea
| | - Kang Mun Lee
- Department of Chemistry and Institute for Molecular Science and Fusion Technology , Kangwon National University , Chuncheon 24341 , Kangwon , Republic of Korea
| | - Phil Ho Lee
- Department of Chemistry and Institute for Molecular Science and Fusion Technology , Kangwon National University , Chuncheon 24341 , Kangwon , Republic of Korea.,National Creative Research Initiative Center for Catalytic Organic Reactions , Kangwon National University , Chuncheon 24341 , Kangwon , Republic of Korea
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29
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Niermeier P, Blomeyer S, Bejaoui YKJ, Beckmann JL, Neumann B, Stammler HG, Mitzel NW. Bidentate Boron Lewis Acids: Selectivity in Host-Guest Complex Formation. Angew Chem Int Ed Engl 2019; 58:1965-1969. [PMID: 30576056 DOI: 10.1002/anie.201812696] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Indexed: 01/19/2023]
Abstract
Bidentate boron Lewis acids based on 1,8-diethynylanthracene were synthesised in two steps by initial stannylation of the terminal alkynes and subsequent tin-boron exchange with different chloroboranes. The reactions were very selective, and the target compounds were obtained in high purity and good to excellent yields. Complexation experiments of 1,8-bis[(diphenylboranyl)ethynyl]anthracene with nitrogen bases (pyridine, pyrimidine, TMEDA) afforded three stable adducts, which were structurally characterised by X-ray diffraction. Competition experiments demonstrated the selective exchange of guests, and quantum-chemical calculations provided information on their energetics. NMR experiments at low temperature gave insight into the dynamic behaviour of the TMEDA adduct.
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Affiliation(s)
- Philipp Niermeier
- Lehrstuhl für Anorganische Chemie und Strukturchemie, Centrum für Molekulare Materialien CM2, Fakultät für Chemie, Universität Bielefeld, Universitätsstraße 25, 33615, Bielefeld, Germany
| | - Sebastian Blomeyer
- Lehrstuhl für Anorganische Chemie und Strukturchemie, Centrum für Molekulare Materialien CM2, Fakultät für Chemie, Universität Bielefeld, Universitätsstraße 25, 33615, Bielefeld, Germany
| | - Younes K J Bejaoui
- Lehrstuhl für Anorganische Chemie und Strukturchemie, Centrum für Molekulare Materialien CM2, Fakultät für Chemie, Universität Bielefeld, Universitätsstraße 25, 33615, Bielefeld, Germany
| | - J Louis Beckmann
- Lehrstuhl für Anorganische Chemie und Strukturchemie, Centrum für Molekulare Materialien CM2, Fakultät für Chemie, Universität Bielefeld, Universitätsstraße 25, 33615, Bielefeld, Germany
| | - Beate Neumann
- Lehrstuhl für Anorganische Chemie und Strukturchemie, Centrum für Molekulare Materialien CM2, Fakultät für Chemie, Universität Bielefeld, Universitätsstraße 25, 33615, Bielefeld, Germany
| | - Hans-Georg Stammler
- Lehrstuhl für Anorganische Chemie und Strukturchemie, Centrum für Molekulare Materialien CM2, Fakultät für Chemie, Universität Bielefeld, Universitätsstraße 25, 33615, Bielefeld, Germany
| | - Norbert W Mitzel
- Lehrstuhl für Anorganische Chemie und Strukturchemie, Centrum für Molekulare Materialien CM2, Fakultät für Chemie, Universität Bielefeld, Universitätsstraße 25, 33615, Bielefeld, Germany
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30
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Niermeier P, Blomeyer S, Bejaoui YKJ, Beckmann JL, Neumann B, Stammler HG, Mitzel NW. Zweizähnige Bor-Lewis-Säuren und ihre Selektivität in der Wirt-Gast-Komplexbildung. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201812696] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Philipp Niermeier
- Lehrstuhl für Anorganische Chemie und Strukturchemie; Centrum für Molekulare Materialien CM 2; Fakultät für Chemie; Universität Bielefeld; Universitätsstraße 25 33615 Bielefeld Deutschland
| | - Sebastian Blomeyer
- Lehrstuhl für Anorganische Chemie und Strukturchemie; Centrum für Molekulare Materialien CM 2; Fakultät für Chemie; Universität Bielefeld; Universitätsstraße 25 33615 Bielefeld Deutschland
| | - Younes K. J. Bejaoui
- Lehrstuhl für Anorganische Chemie und Strukturchemie; Centrum für Molekulare Materialien CM 2; Fakultät für Chemie; Universität Bielefeld; Universitätsstraße 25 33615 Bielefeld Deutschland
| | - J. Louis Beckmann
- Lehrstuhl für Anorganische Chemie und Strukturchemie; Centrum für Molekulare Materialien CM 2; Fakultät für Chemie; Universität Bielefeld; Universitätsstraße 25 33615 Bielefeld Deutschland
| | - Beate Neumann
- Lehrstuhl für Anorganische Chemie und Strukturchemie; Centrum für Molekulare Materialien CM 2; Fakultät für Chemie; Universität Bielefeld; Universitätsstraße 25 33615 Bielefeld Deutschland
| | - Hans-Georg Stammler
- Lehrstuhl für Anorganische Chemie und Strukturchemie; Centrum für Molekulare Materialien CM 2; Fakultät für Chemie; Universität Bielefeld; Universitätsstraße 25 33615 Bielefeld Deutschland
| | - Norbert W. Mitzel
- Lehrstuhl für Anorganische Chemie und Strukturchemie; Centrum für Molekulare Materialien CM 2; Fakultät für Chemie; Universität Bielefeld; Universitätsstraße 25 33615 Bielefeld Deutschland
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31
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Lee JH, Ryu CH, Yu S, Hwang H, Lee KM. Quinolinol-based Al/Triarylborane Dyad Assembly: Alteration of Electronic Transition States Mediated by Fluoride Anion Binding. B KOREAN CHEM SOC 2018. [DOI: 10.1002/bkcs.11595] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Ji Hye Lee
- Department of Chemistry; Institute for Molecular Science and Fusion Technology, Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Chan Hee Ryu
- Department of Chemistry; Institute for Molecular Science and Fusion Technology, Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Seokhyeon Yu
- Department of Chemistry; Institute for Molecular Science and Fusion Technology, Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Hyonseok Hwang
- Department of Chemistry; Institute for Molecular Science and Fusion Technology, Kangwon National University; Chuncheon 24341 Republic of Korea
| | - Kang Mun Lee
- Department of Chemistry; Institute for Molecular Science and Fusion Technology, Kangwon National University; Chuncheon 24341 Republic of Korea
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32
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Ryu JY, Lee JM, Van Nghia N, Lee KM, Lee S, Lee MH, Stang PJ, Lee J. Supramolecular Pt(II) and Ru(II) Trigonal Prismatic Cages Constructed with a Tris(pyridyl)borane Donor. Inorg Chem 2018; 57:11696-11703. [PMID: 30160112 PMCID: PMC6402499 DOI: 10.1021/acs.inorgchem.8b01830] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We report a novel example of supramolecular cages containing a Lewis acidic trigonal boron center. Self-assembly of the tris(pyridyl)borane donor 1 with diruthenium (2) or platinum (3), as an electron acceptor, furnished boron-containing trigonal prismatic supramolecular cages 5 and 6, which were characterized by 1H NMR and electrospray ionization time-of-flight mass spectroscopy and X-ray crystallography. The molecular structure of cage 5 was confirmed as a trigonal prismatic cage with an inner dimension of about 400 Å3. The fluoride binding properties of borane ligand 1 and Pt cage 6 were studied. UV/vis absorption titration studies demonstrated that the boron center of cage 6 undergoes strong binding interaction with the fluoride ion, with an estimated binding constant of 1.3 × 1010 M-2 in acetone based on the 1:2 binding isotherm. The binding was also confirmed by 1H NMR titration. Photoluminescence titration studies showed that cage 6 emitted borane-centered fluorescence (τ = 2.21 ns), which was gradually quenched upon addition of fluoride. When excess fluoride was added to a solution of 6, however, dissociation of the pyridyl ligand from the Pt(II) center was observed.
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Affiliation(s)
- Ji Yeon Ryu
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Ji Min Lee
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Nguyen Van Nghia
- Department of Chemistry and EHSRC, University of Ulsan, Ulsan 44610, Republic of Korea
| | - Kang Mun Lee
- Department of Chemistry, Institute for Molecular Science and Fusion Technology, Kangwon National University, Chuncheon, Gangwon 24341, Republic of Korea
| | - Sunwoo Lee
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Min Hyung Lee
- Department of Chemistry and EHSRC, University of Ulsan, Ulsan 44610, Republic of Korea
| | - Peter J. Stang
- Department of Chemistry, University of Utah, 315 South 1400 East, Room 2020, Salt Lake City, Utah 84112, United States
| | - Junseong Lee
- Department of Chemistry, Chonnam National University, Gwangju 61186, Republic of Korea
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33
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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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34
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Yuan K, Wang X, Mellerup SK, Kozin I, Wang S. Spiro-BODIPYs with a Diaryl Chelate: Impact on Aggregation and Luminescence. J Org Chem 2017; 82:13481-13487. [DOI: 10.1021/acs.joc.7b02602] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Kang Yuan
- Department of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Xiang Wang
- Department of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Soren K Mellerup
- Department of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Igor Kozin
- Department of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Suning Wang
- Department of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
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35
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Yamamoto K, Pandit P, Higashibayashi S. Non-Planar [n]Cyclo-1,8-carbazolylenes (n=3,4,6) and [3]Cyclo-1,8-carbazolylenyl B, P, PO, SiPh Complexes. Chemistry 2017; 23:14011-14016. [PMID: 28733988 DOI: 10.1002/chem.201702853] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Indexed: 11/11/2022]
Abstract
A new family of non-planar heterocyclic molecules consisting of carbazoles was created. A bowl-shaped cyclodimer, a flake-shaped cyclotrimer, a double-decker-ring-shaped cyclotetramer and a cyclohexamer were synthesized by Ni0 -mediated one-shot cyclo-oligomerization of 1,8-dibromocarbazole, and were named [n]cyclo-1,8-carbazolylenes (n=3,4,6). [3]Cyclo-1,8-carbazolylene was found to act as a trivalent tridentate ligand for heteroatoms (B, P, Si), giving flake-shaped complexes. The boron derivative acted as a Lewis acid, and the tetra-coordinated complexes showed an unprecedented red-shift of absorption and emission spectra by the coordination. The synthetic method, the distorted C2 or C1 symmetric shape, the trivalent tridentate coordination ability and the kinds of introduced heteroatoms of [3]cyclo-1,8-carbazolylenes, the electronic structure, the photophysical property, and the Lewis acidity were distinct from those of related subporphyrins/subphthalocyanines.
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Affiliation(s)
- Koji Yamamoto
- Institute for Molecular Science, Myodaiji, Okazaki, 444-8787, Japan
| | - Palash Pandit
- Institute for Molecular Science, Myodaiji, Okazaki, 444-8787, Japan
| | - Shuhei Higashibayashi
- Institute for Molecular Science, Myodaiji, Okazaki, 444-8787, Japan.,Faculty of Pharmacy, Keio University, 1-5-30 Shibakoen, Minato-ku, Tokyo, 105-8512, Japan
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36
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Lee YH, Lee HD, Ryu JY, Lee J, Lee MH. Photophysical and Lewis acidic properties of triarylboranes with meta -substituted 2-R- o -carboranes. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.06.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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37
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Turkoglu G, Cinar ME, Ozturk T. Synthesis and Photophysical and Anion-Sensing Properties of Triarylborane-Substituted Cross-Conjugated and Conjugated Thienothiophenes. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700679] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Gulsen Turkoglu
- Department of Chemistry; Istanbul Technical University; Maslak 34469 Istanbul Turkey
| | - M. Emin Cinar
- Department of Chemistry; Istanbul Technical University; Maslak 34469 Istanbul Turkey
- Department Chemie-Biologie; Universität Siegen; OC1 57068 Siegen Germany
| | - Turan Ozturk
- Department of Chemistry; Istanbul Technical University; Maslak 34469 Istanbul Turkey
- Chemistry Group Laboratories; TUBITAK-UME; P. O. Box 54, Gebze 41471 Kocaeli Turkey
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38
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Yin GJ, Zhang B. Crystal structure of bis(2-(2′-hydroxy-5′-methoxyphenyl)-1 H-benzimidazole)boron – tetrahydrofuran (1/1), C 36H 37N 4O 6B. Z KRIST-NEW CRYST ST 2017. [DOI: 10.1515/ncrs-2016-0377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
C36H37N4O6B, monoclinic, C2/c, a = 9.3404(4) Å, b = 19.8395(10) Å, c = 17.8985(9) Å, β = 103.301(5)°, V = 3226.0(3) Å3, Z = 4, R
gt(F) = 0.0626, wR
ref(F
2) = 0.2086, T = 293 K.
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Affiliation(s)
- Guo-jie Yin
- School of Environmental Engineering and Chemistry , Luoyang Institute of Science and Technology , 471023, Luoyang , People’s Republic of China
| | - Bin Zhang
- The College of Chemistry and Molecular Engineering , Zhengzhou University , 450052, Zhengzhou , People’s Republic of China
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39
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Stauber JM, Alliger GE, Nocera DG, Cummins CC. Second-Coordination-Sphere Assisted Selective Colorimetric Turn-on Fluoride Sensing by a Mono-Metallic Co(II) Hexacarboxamide Cryptand Complex. Inorg Chem 2017; 56:7615-7619. [DOI: 10.1021/acs.inorgchem.7b01335] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Julia M. Stauber
- Department
of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts
Ave, Cambridge, Massachusetts 02139, United States
| | - Glen E. Alliger
- Department
of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts
Ave, Cambridge, Massachusetts 02139, United States
| | - Daniel G. Nocera
- Department
of Chemistry and Chemical Biology, Harvard University, 12 Oxford
Street, Cambridge, Massachusetts 02138, United States
| | - Christopher C. Cummins
- Department
of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts
Ave, Cambridge, Massachusetts 02139, United States
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40
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Ji L, Griesbeck S, Marder TB. Recent developments in and perspectives on three-coordinate boron materials: a bright future. Chem Sci 2017; 8:846-863. [PMID: 28572897 PMCID: PMC5452272 DOI: 10.1039/c6sc04245g] [Citation(s) in RCA: 437] [Impact Index Per Article: 62.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2016] [Accepted: 11/08/2016] [Indexed: 12/12/2022] Open
Abstract
The empty p z -orbital of a three-coordinate organoboron compound leads to its electron-deficient properties, which make it an excellent π-acceptor in conjugated organic chromophores. The empty p-orbital in such Lewis acids can be attacked by nucleophiles, so bulky groups are often employed to provide air-stable materials. However, many of these can still bind fluoride and cyanide anions leading to applications as anion-selective sensors. One electron reduction generates radical anions. The π-acceptor strength can be easily tuned by varying the organic substituents. Many of these compounds show strong two-photon absorption (TPA) and two-photon excited fluorescence (TPEF) behaviour, which can be applied for e.g. biological imaging. Furthermore, these chromophores can be used as emitters and electron transporters in OLEDs, and examples have recently been found to exhibit efficient thermally activated delayed fluorescence (TADF). The three-coordinate organoboron unit can also be incorporated into polycyclic aromatic hydrocarbons. Such boron-doped compounds exhibit very interesting properties, distinct from their all-carbon analogues. Significant developments have been made in all of these areas in recent years and new applications are rapidly emerging for this class of boron compounds.
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Affiliation(s)
- Lei Ji
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron , Julius-Maximilians-Universität Würzburg , Am Hubland , 97074 Würzburg , Germany .
| | - Stefanie Griesbeck
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron , Julius-Maximilians-Universität Würzburg , Am Hubland , 97074 Würzburg , Germany .
| | - Todd B Marder
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron , Julius-Maximilians-Universität Würzburg , Am Hubland , 97074 Würzburg , Germany .
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41
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Kalpana P, Suganya S, Velmathi S. Structurally simple azo based chromogenic R1 for the selective sensing of cyanide ion in aqueous medium. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2017; 171:162-167. [PMID: 27526339 DOI: 10.1016/j.saa.2016.07.045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Revised: 07/13/2016] [Accepted: 07/31/2016] [Indexed: 06/06/2023]
Abstract
Structurally simple azo linked Schiff base R1 was synthesized and characterized using IR, 1H NMR and mass spectroscopic techniques. The selective sensing of cyanide anion over other anions such as fluoride, chloride, bromine, iodide, acetate, nitrate, hydrogen sulphate and dihydrogenphosphate was revealed by naked-eye color change and UV-vis spectra. Addition of CN- ions to the R1 showed a dramatic change in color from pale yellow to intense yellow along with the formation of a new band at 415nm in the absorption spectrum even in 100% aqueous medium. The interaction between R1 and cyanide was also investigated using 1H NMR titration study. The R1 showed limit of detection (LOD) up to micromolar level at 2.72×10-6M. Job's plot reveals the existing binding mode of R1 and CN- ion in molar ratio of 1:1 (R1:CN-).
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Affiliation(s)
- Palanisamy Kalpana
- Organic and Polymer Synthesis Laboratory, Department of Chemistry, National Institute of Technology, Tiruchirappalli, 620 015, India
| | - Sivalingam Suganya
- Organic and Polymer Synthesis Laboratory, Department of Chemistry, National Institute of Technology, Tiruchirappalli, 620 015, India
| | - Sivan Velmathi
- Organic and Polymer Synthesis Laboratory, Department of Chemistry, National Institute of Technology, Tiruchirappalli, 620 015, India.
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42
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You DK, Lee SH, Lee JH, Kwak SW, Hwang H, Lee J, Chung Y, Park MH, Lee KM. Synthesis and photophysical properties of phenanthroimidazole–triarylborane dyads: intriguing ‘turn-on’ sensing mediated by fluoride anions. RSC Adv 2017. [DOI: 10.1039/c6ra28559g] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Phenanthroimidazole-based triarylborane compounds with an N-phenyl or N-biphenyl bridge were prepared and these compounds show ratiometrical ‘turn-on’ response in PL spectra upon fluoride binding to the borane moiety.
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Affiliation(s)
- Dong Kyun You
- Department of Chemistry
- Institute for Molecular Science and Fusion Technology
- Kangwon National University
- Chuncheon
- Republic of Korea
| | - Seon Hee Lee
- Department of Chemistry Education
- Chungbuk National University
- Cheongju
- Republic of Korea
| | - Ji Hye Lee
- Department of Chemistry
- Institute for Molecular Science and Fusion Technology
- Kangwon National University
- Chuncheon
- Republic of Korea
| | - Sang Woo Kwak
- Department of Chemistry
- Chungbuk National University
- Cheongju
- Republic of Korea
| | - Hyonseok Hwang
- Department of Chemistry
- Institute for Molecular Science and Fusion Technology
- Kangwon National University
- Chuncheon
- Republic of Korea
| | - Junseong Lee
- Department of Chemistry
- Chonnam National University
- Gwangju 61186
- Republic of Korea
| | - Yongseog Chung
- Department of Chemistry
- Chungbuk National University
- Cheongju
- Republic of Korea
| | - Myung Hwan Park
- Department of Chemistry Education
- Chungbuk National University
- Cheongju
- Republic of Korea
| | - Kang Mun Lee
- Department of Chemistry
- Institute for Molecular Science and Fusion Technology
- Kangwon National University
- Chuncheon
- Republic of Korea
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43
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Wen Y, Kuang D, Huang J, Zhang Y. Microaxicave colour analysis system for fluoride concentration using a smartphone. RSC Adv 2017. [DOI: 10.1039/c7ra07727k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Layout of our fluoride measurement system and the correlation between the concentration of fluoride and the peak of value–hue curves.
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Affiliation(s)
- Yuxiang Wen
- Institute of Modern Optics
- The Key Laboratory of Optical Information Science and Technology of the Education Ministry of China
- Nankai University
- Tianjin
- China
| | - Dengfeng Kuang
- Institute of Modern Optics
- The Key Laboratory of Optical Information Science and Technology of the Education Ministry of China
- Nankai University
- Tianjin
- China
| | - Jinhui Huang
- Sino-Canada Joint R&D Centre for Water and Environment Safety
- College of Environmental Science and Engineering
- Nankai University
- Tianjin
- China
| | - Yi Zhang
- Sino-Canada Joint R&D Centre for Water and Environment Safety
- College of Environmental Science and Engineering
- Nankai University
- Tianjin
- China
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44
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Hertz VM, Ando N, Hirai M, Bolte M, Lerner HW, Yamaguchi S, Wagner M. Steric Shielding vs Structural Constraint in a Boron-Containing Polycyclic Aromatic Hydrocarbon. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00800] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Valentin M. Hertz
- Institut
für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Straße 7, 60438 Frankfurt am Main, Germany
| | - Naoki Ando
- Department
of Chemistry, Graduate School of Science, Institute of Transformative
Bio-Molecules (WPI-ITbM), and Integrated Research Consortium on Chemical
Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
| | - Masato Hirai
- Department
of Chemistry, Graduate School of Science, Institute of Transformative
Bio-Molecules (WPI-ITbM), and Integrated Research Consortium on Chemical
Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
| | - Michael Bolte
- Institut
für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Straße 7, 60438 Frankfurt am Main, Germany
| | - Hans-Wolfram Lerner
- Institut
für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Straße 7, 60438 Frankfurt am Main, Germany
| | - Shigehiro Yamaguchi
- Department
of Chemistry, Graduate School of Science, Institute of Transformative
Bio-Molecules (WPI-ITbM), and Integrated Research Consortium on Chemical
Sciences (IRCCS), Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
| | - Matthias Wagner
- Institut
für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt, Max-von-Laue-Straße 7, 60438 Frankfurt am Main, Germany
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45
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Ohtsuka K, Inagi S, Fuchigami T. Electrochemical Properties and Reactions of Oxygen-Containing Organotrifluoroborates and Their Boronic Acid Esters. ChemElectroChem 2016. [DOI: 10.1002/celc.201600519] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Kazuhiro Ohtsuka
- Department of Electronic Chemistry; Tokyo Institute of Technology; 4259 Nagatsuta-cho, Midori-ku Yokohama 226-8502 Japan
| | - Shinsuke Inagi
- Department of Chemical Science and Engineering; School of Materials and Chemical Technology; Tokyo Institute of Technology; 4259 Nagatsuta-cho, Midori-ku Yokohama 226-8502 Japan
| | - Toshio Fuchigami
- Department of Electronic Chemistry; Tokyo Institute of Technology; 4259 Nagatsuta-cho, Midori-ku Yokohama 226-8502 Japan
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46
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Puneet P, Vedarajan R, Matsumi N. Alternating Poly(borosiloxane) for Solid State Ultrasensitivity Toward Fluoride Ions in Aqueous Media. ACS Sens 2016. [DOI: 10.1021/acssensors.6b00346] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Puhup Puneet
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi-shi, Ishikawa 923-1292, Japan
| | - Raman Vedarajan
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi-shi, Ishikawa 923-1292, Japan
| | - Noriyoshi Matsumi
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi-shi, Ishikawa 923-1292, Japan
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47
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Sun ZB, Li SY, Liu ZQ, Zhao CH. Triarylborane π -electron systems with intramolecular charge-transfer transitions. CHINESE CHEM LETT 2016. [DOI: 10.1016/j.cclet.2016.06.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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48
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Suzuki J, Shida N, Inagi S, Fuchigami T. Electrochemical Properties and Reactions of Organoboronic Acids in the Presence of Fluoride Ions. ELECTROANAL 2016. [DOI: 10.1002/elan.201600130] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Junji Suzuki
- Department of Electronic Chemistry; Tokyo Institute of Technology; 4259 Nagatsuta Midori-ku, Yokohama 226-8502 Japan
| | - Naoki Shida
- Department of Electronic Chemistry; Tokyo Institute of Technology; 4259 Nagatsuta Midori-ku, Yokohama 226-8502 Japan
| | - Shinsuke Inagi
- Department of Electronic Chemistry; Tokyo Institute of Technology; 4259 Nagatsuta Midori-ku, Yokohama 226-8502 Japan
| | - Toshio Fuchigami
- Department of Electronic Chemistry; Tokyo Institute of Technology; 4259 Nagatsuta Midori-ku, Yokohama 226-8502 Japan
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Weisheim E, Schwartzen A, Kuhlmann L, Neumann B, Stammler HG, Mitzel NW. Tridentate Lewis Acids: Boron-, Silicon- and Gallium-Functionalised Tris(dimethylsilyl)methanes. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501432] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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