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Thierry T, Giuso V, Polo F, Mercandelli P, Chen YT, Chang CH, Mauro M, Bellemin-Laponnaz S. A stable and true-blue emissive hexacoordinate Si(IV) N-heterocyclic carbene complex and its use in organic light-emitting diodes. Dalton Trans 2024; 53:6445-6450. [PMID: 38511259 DOI: 10.1039/d4dt00420e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/22/2024]
Abstract
A neutral hexacoordinate Si(IV) complex containing two tridentate N-heterocyclic carbene ligands is synthesised and characterized by X-ray crystallography, optical spectroscopy, electrochemistry and computational methods. The stable compound exhibits remarkable deep-blue photoluminescence particularly in the solid state, which enables its use as an electroluminescent material in organic light-emitting diodes.
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Affiliation(s)
- Thibault Thierry
- Institut de Physique et Chimie des Matériaux de Strasbourg UMR 7504 - Université de Strasbourg & CNRS, 23 rue du Loess, 67034 Strasbourg, France.
| | - Valerio Giuso
- Institut de Physique et Chimie des Matériaux de Strasbourg UMR 7504 - Université de Strasbourg & CNRS, 23 rue du Loess, 67034 Strasbourg, France.
| | - Federico Polo
- Department of Molecular Sciences and Nanosystems, Ca' Foscari University of Venice, Via Torino 155, 30172 Venice, Italy
- European Centre for Living Technology (ECLT), Ca' Foscari University of Venice, Ca' Bottacin, 30124, Venice, Italy
| | | | - Yi-Ting Chen
- Department of Electrical Engineering, Yuan Ze University, 32003 Taoyuan, Taiwan
| | - Chih-Hao Chang
- Department of Electrical Engineering, Yuan Ze University, 32003 Taoyuan, Taiwan
| | - Matteo Mauro
- Institut de Physique et Chimie des Matériaux de Strasbourg UMR 7504 - Université de Strasbourg & CNRS, 23 rue du Loess, 67034 Strasbourg, France.
| | - Stéphane Bellemin-Laponnaz
- Institut de Physique et Chimie des Matériaux de Strasbourg UMR 7504 - Université de Strasbourg & CNRS, 23 rue du Loess, 67034 Strasbourg, France.
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2
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Maurer LA, Pearce OM, Maharaj FDR, Brown NL, Amador CK, Damrauer NH, Marshak MP. Open for Bismuth: Main Group Metal-to-Ligand Charge Transfer. Inorg Chem 2021; 60:10137-10146. [PMID: 34181403 DOI: 10.1021/acs.inorgchem.0c03818] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The synthesis, characterization, and photophysical properties of 4- and 6-coordinate Bi3+ coordination complexes are reported. Bi(bzq)3 (1) and [Bi(bzq)2]Br (2) (bzq = benzo[h]quinoline) are synthesized by reaction of 9-Li-bzq with BiCl3 and BiBr3, respectively. Absorption spectroscopy, electrochemistry, and DFT studies suggest that 1 has 42% Bi 6s character in its highest-occupied molecular orbital (HOMO) as a result of six σ* interactions with the bzq ligands. Excitation of 1 at 450 nm results in a broad emission feature at 520 nm, which is rationalized as a metal-to-ligand charge transfer (MLCT) and phosphorescent emission resulting from bismuth-mediated intersystem crossing (ISC) to a triplet excited state. This excited state revealed a 35 μs lifetime and was quenched in the presence of oxygen. These results demonstrate that useful optoelectronic properties of Bi3+ can be accessed through hypercoordination with covalent organobismuth interactions that mimic the electronic structure of lead perovskites.
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Affiliation(s)
- Laura A Maurer
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Orion M Pearce
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Franklin D R Maharaj
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Niamh L Brown
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Camille K Amador
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States
| | - Niels H Damrauer
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States.,Renewable and Sustainable Energy Institute, Boulder, Colorado 80309, United States
| | - Michael P Marshak
- Department of Chemistry, University of Colorado Boulder, Boulder, Colorado 80309, United States.,Renewable and Sustainable Energy Institute, Boulder, Colorado 80309, United States
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3
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Tanaka K, Chujo Y. New Idea for Narrowing an Energy Gap by Selective Perturbation of One Frontier Molecular Orbital. CHEM LETT 2021. [DOI: 10.1246/cl.200756] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Kazuo Tanaka
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
| | - Yoshiki Chujo
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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4
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Furuta S, Mori T, Yoshigoe Y, Sekine K, Kuninobu Y. Synthesis, structures and photophysical properties of hexacoordinated organosilicon compounds with 2-(2-pyridyl)phenyl groups. Org Biomol Chem 2020; 18:3239-3242. [PMID: 32285083 DOI: 10.1039/d0ob00484g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We synthesised novel hexacoordinated organosilicon compounds with two 2-(2-pyridyl)phenyl groups. Single-crystal X-ray structure analyses indicated that Lewis acid-base interactions exist between the silicon atom and two nitrogen atoms of the pyridine rings, and that hexacoordinated organosilicon compounds have slightly distorted octahedral structures in the solid state. The hexacoordinated organosilicon compounds are stable in air, water, heat, acids, and bases. The fluorescent quantum yield increased dramatically and a significant red-shift of the maximum fluorescence wavelength was observed with the introduction of amino groups on the 2-(2-pyridyl)phenyl aromatic rings. The fluorescence colours of a hexacoordinated organosilicon compound with two amino groups can be switched by protonation and deprotonation (neutralisation) of the amino groups.
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Affiliation(s)
- Shohei Furuta
- Department of Molecular and Material Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, Fukuoka 816-8580, Japan
| | - Toshiaki Mori
- Department of Molecular and Material Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, Fukuoka 816-8580, Japan
| | - Yusuke Yoshigoe
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, Fukuoka 816-8580, Japan.
| | - Kohei Sekine
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, Fukuoka 816-8580, Japan. and Department of Molecular and Material Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, Fukuoka 816-8580, Japan
| | - Yoichiro Kuninobu
- Institute for Materials Chemistry and Engineering, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, Fukuoka 816-8580, Japan. and Department of Molecular and Material Sciences, Interdisciplinary Graduate School of Engineering Sciences, Kyushu University, 6-1 Kasugakoen, Kasuga-shi, Fukuoka 816-8580, Japan
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Wysokiński R, Michalczyk M, Zierkiewicz W, Scheiner S. Influence of monomer deformation on the competition between two types of σ-holes in tetrel bonds. Phys Chem Chem Phys 2019; 21:10336-10346. [DOI: 10.1039/c9cp01759c] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Competition between two competing sites on a tetrel atom is explained by balance between structural deformation and σ-hole intensity.
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Affiliation(s)
- Rafał Wysokiński
- Faculty of Chemistry
- Wrocław University of Science and Technology
- 50-370 Wrocław
- Poland
| | - Mariusz Michalczyk
- Faculty of Chemistry
- Wrocław University of Science and Technology
- 50-370 Wrocław
- Poland
| | - Wiktor Zierkiewicz
- Faculty of Chemistry
- Wrocław University of Science and Technology
- 50-370 Wrocław
- Poland
| | - Steve Scheiner
- Department of Chemistry and Biochemistry
- Utah State University
- Logan
- USA
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Cycloisomerization – a straightforward way to benzo[h]quinolines and benzo[c]acridines. Chem Heterocycl Compd (N Y) 2017. [DOI: 10.1007/s10593-017-2179-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Kuninobu Y. The Development of Novel C-H Bond Transformations and Their Application to the Synthesis of Organic Functional Molecules. J SYN ORG CHEM JPN 2016. [DOI: 10.5059/yukigoseikyokaishi.74.1058] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Wakaki T, Kanai M, Kuninobu Y. Iridium-Catalyzed ortho-Selective C–H Silylation of Aromatic Compounds Directed toward the Synthesis of π-Conjugated Molecules with Lewis Acid–Base Interaction. Org Lett 2015; 17:1758-61. [DOI: 10.1021/acs.orglett.5b00529] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Takayuki Wakaki
- Graduate
School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Motomu Kanai
- Graduate
School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- ERATO, Japan Science and Technology Agency (JST), Kanai Life Science Catalysis Project, 7-3-1
Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Yoichiro Kuninobu
- Graduate
School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
- ERATO, Japan Science and Technology Agency (JST), Kanai Life Science Catalysis Project, 7-3-1
Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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Kano N, Yamamura M, Kawashima T. 2,2′-Disilylazobenzenes featuring double intramolecular nitrogen⋯silicon coordination: a photoisomerizable fluorophore. Dalton Trans 2015. [DOI: 10.1039/c5dt02038g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fluorescent (E)-4,4′-dimethyl-2,2′-bis(trimethylsilyl)azobenzene was synthesized.
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Affiliation(s)
- Naokazu Kano
- Department of Chemistry
- Graduate School of Science
- The University of Tokyo
- Tokyo 113-0033
- Japan
| | - Masaki Yamamura
- Department of Chemistry
- Graduate School of Science
- The University of Tokyo
- Tokyo 113-0033
- Japan
| | - Takayuki Kawashima
- Department of Chemistry
- Graduate School of Science
- The University of Tokyo
- Tokyo 113-0033
- Japan
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Tokoro Y, Tanaka K, Chujo Y. Integration of benzo[h]quinoline and π-extended dibenzo[b,f]silepins on pentacoordinate silicon. RSC Adv 2015. [DOI: 10.1039/c5ra00418g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
We investigated the relationship between the chemical structure involving the pentacoordinate silicon and the electronic properties of the molecules.
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Affiliation(s)
- Yuichiro Tokoro
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto
- Japan
| | - Kazuo Tanaka
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto
- Japan
| | - Yoshiki Chujo
- Department of Polymer Chemistry
- Graduate School of Engineering
- Kyoto University
- Kyoto
- Japan
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12
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Yeo H, Hirose M, Tanaka K, Chujo Y. Construction of multi-N-heterocycle-containing organic solvent-soluble polymers with 1,3,4,6,9b-pentaazaphenalene. Polym J 2014. [DOI: 10.1038/pj.2014.59] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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13
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Xiao Q, Meng X, Kanai M, Kuninobu Y. Palladium-Catalyzed CH Fluorosilylation of 2-Phenylpyridines: Synthesis of Silafluorene Equivalents. Angew Chem Int Ed Engl 2014; 53:3168-72. [DOI: 10.1002/anie.201310293] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2013] [Indexed: 12/23/2022]
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14
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Xiao Q, Meng X, Kanai M, Kuninobu Y. Palladium-Catalyzed CH Fluorosilylation of 2-Phenylpyridines: Synthesis of Silafluorene Equivalents. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201310293] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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15
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Tokoro Y, Tanaka K, Chujo Y. Synthesis of Dibenzo[b,f]silepins with a Benzoquinolyl Ligand. Org Lett 2013; 15:2366-9. [DOI: 10.1021/ol400730n] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Yuichiro Tokoro
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Kazuo Tanaka
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
| | - Yoshiki Chujo
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto, 615-8510, Japan
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Yoshii R, Nagai A, Tanaka K, Chujo Y. Highly near-infrared emissive boron di(iso)indomethene-based polymer: Drastic change from deep-red to near-infrared emission via quantitative polymer reaction. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26547] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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17
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Tokoro Y, Yeo H, Tanaka K, Chujo Y. Synthesis and tuning of optical properties of conjugated polymers involving benzo[h]quinoline-based neutral pentacoordinate organosilicon complexes in the main chain. Polym Chem 2013. [DOI: 10.1039/c3py00215b] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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