1
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Zheng SJ, Ma J, Su J, Djurovich PI, Thompson ME, Li TY. Simultaneous Thermally Stimulated Delayed Phosphorescence (TSDP) and Thermally Activated Delayed Fluorescence (TADF) in a Two-Coordinated Au(I) Bimetallic Complex Featuring a Tandem Carbene Structure. J Am Chem Soc 2024; 146:19042-19049. [PMID: 38950194 DOI: 10.1021/jacs.4c02930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/03/2024]
Abstract
A bimetallic, two-coordinated carbene-metal-amine (cMa) Au(I) complex featuring a twisted tandem carbene structure (NHC1-Au-NHC2-Au-carbazolyl) was synthesized. The molecular structure in single crystals revealed a large dihedral angle between the two carbene ligands, while the bridged carbene NHC2 and carbazolyl (Cz) ligands were coplanar. A bluish green thermally stimulated delayed phosphorescence (TSDP) was observed in crystals with an emission lifetime over 70 μs, which can be attributed to the spin allowed diabatic population of a high-lying emissive triplet state from the 3LE characterized low-lying ones. The small rotation energy barrier of Cz along the coordination bond allowed conformers with large dihedral angles between NHC2 and Cz. The ICT characterized S1 state was consequently stabilized to achieve a thermally accessible energy gap to facilitate ISC between triplets and the S1, leading to the thermally activated delayed fluorescence (TADF). Simultaneous TSDP and TADF dual emission can be recorded in its doped polymer film owing to the coexistence of these different conformers.
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Affiliation(s)
- Shu-Jia Zheng
- Department of Chemistry, University of Science and Technology Beijing, 30 XueYuan Road, Beijing 100083, China
| | - Jie Ma
- Department of Chemistry, University of Southern California, 3620 McClintock Avenue, Los Angeles, California 90089, United States
| | - Junru Su
- Department of Chemistry, University of Southern California, 3620 McClintock Avenue, Los Angeles, California 90089, United States
| | - Peter I Djurovich
- Department of Chemistry, University of Southern California, 3620 McClintock Avenue, Los Angeles, California 90089, United States
| | - Mark E Thompson
- Department of Chemistry, University of Southern California, 3620 McClintock Avenue, Los Angeles, California 90089, United States
| | - Tian-Yi Li
- Department of Chemistry, University of Science and Technology Beijing, 30 XueYuan Road, Beijing 100083, China
- Department of Chemistry, University of Southern California, 3620 McClintock Avenue, Los Angeles, California 90089, United States
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2
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Zhao YY, Li ZQ, Gong ZL, Bernhard S, Zhong YW. Endowing Metal-Organic Coordination Materials with Chiroptical Activity by a Chiral Anion Strategy. Chemistry 2024; 30:e202400685. [PMID: 38469986 DOI: 10.1002/chem.202400685] [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: 02/19/2024] [Revised: 03/07/2024] [Accepted: 03/12/2024] [Indexed: 03/13/2024]
Abstract
Recently, chiral metal-organic coordination materials have emerged as promising candidates for a wide range of applications in chiroptoelectronics, chiral catalysis, and information encryption, etc. Notably, the chiroptical effect of coordination chromophores makes them appealing for applications such as photodetectors, OLEDs, 3D displays, and bioimaging. The direct synthesis of chiral coordination materials using chiral organic ligands or complexes with metal-centered chirality is very often tedious and costly. In the case of ionic coordination materials, the combination of chiral anions with cationic, achiral coordination compounds through noncovalent interactions may endow molecular materials with desirable chiroptical properties. The use of such a simple chiral strategy has been proven effective in inducing promising circular dichroism and/or circularly polarized luminescence signals. This concept article mainly delves into the latest advances in exploring the efficacy of such a chiral anion strategy for transforming achiral coordination materials into chromophores with superb photo- or electro-chiroptical properties. In particular, ionic small-molecular metal complexes, metal clusters, coordination supramolecular assemblies, and metal-organic frameworks containing chiral anions are discussed. A perspective on the future opportunities on the preparation of chiroptical materials with the chiral anion strategy is also presented.
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Affiliation(s)
- Yuan-Yuan Zhao
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Zhong-Qiu Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Zhong-Liang Gong
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Stefan Bernhard
- Department of Chemistry, Carnegie Mellon University, Pittsburgh, Pennsylvania, 15213, United States of America
| | - Yu-Wu Zhong
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Photochemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
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3
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Ikeshita M, Ma SC, Muller G, Naota T. Linker-dependent control of the chiroptical properties of polymethylene-vaulted trans-bis[(β-iminomethyl)naphthoxy]platinum(II) complexes. Dalton Trans 2024; 53:7775-7787. [PMID: 38619916 DOI: 10.1039/d4dt00273c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
The effects of polymethylene bridges on the chiroptical properties of trans-bis[(β-iminomethyl)naphthoxy]platinum(II) platforms were examined both experimentally and theoretically using newly designed planar chiral Pt analogues (1) having three-dimensional superstructures. A series of optically pure polymethylene-vaulted Pt complexes (R)- and (S)-1 were synthesized and characterized with regard to the chiroptical behaviour of the trans-bis[(β-iminomethyl)naphthoxy]platinum(II) platforms. These complexes were found to exhibit structure-dependent chiroptical characteristics in solution, such that the absolute values of specific rotation, the circular dichroism dissymmetry factor (gabs) and the circularly polarized luminescence dissymmetry factor (glum) all increased upon shortening the polymethylene bridges. Density functional theory and time dependent density functional theory calculations were used to analyse vaulted and non-vaulted complexes, which demonstrated that the present linker-dependent chiroptical properties resulted from constraint-induced changes in the square planar Pt coordination centres rather than from chiral distortion along the coordination platforms.
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Affiliation(s)
- Masahiro Ikeshita
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Machikaneyama, Toyonaka, Osaka 560-8531, Japan.
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Narashino, Chiba 275-8575, Japan.
| | - Shing Cho Ma
- Department of Chemistry, San José State University, One Washington Square, San José, California 95192-0101, USA.
| | - Gilles Muller
- Department of Chemistry, San José State University, One Washington Square, San José, California 95192-0101, USA.
| | - Takeshi Naota
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Machikaneyama, Toyonaka, Osaka 560-8531, Japan.
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4
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Ikeshita M, Hara N, Imai Y, Naota T. Chiroptical Response Control of Planar and Axially Chiral Polymethylene-Vaulted Platinum(II) Complexes Bearing 1,1'-Binaphthyl Frameworks. Inorg Chem 2023; 62:13964-13976. [PMID: 37581577 DOI: 10.1021/acs.inorgchem.3c01935] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2023]
Abstract
In this study, the synthesis, structure, and chiroptical response control of planar chiral polymethylene-vaulted trans-bis[(β-iminomethyl)aryloxy]platinum(II) complexes bearing axially chiral 1,1'-binaphthyl ligands are described. A series of enantiopure polymethylene (n = 4-10)-vaulted complexes were prepared in 6 steps using commercially available (R)- or (S)-BINOL as the starting material without an optical resolution process. The trans-coordination and three-dimensional vaulted structures of the platinum complexes were elucidated from X-ray diffraction (XRD) studies. The complexes were found to show structural dependence of chiroptical responses in the dilute solution state such that the absolute values of [α]D, dissymmetry factors gabs in circular dichroism (CD), and glum in circularly polarized luminescence (CPL) increased upon shortening the length of the polymethylene bridges. The enhanced chiroptical responses were theoretically investigated using density functional theory (DFT) and time-dependent DFT (TD-DFT) calculations, and the results are discussed in terms of the molecular structures and transition dipole moments of the ground states. The structural dependence of the chiroptical responses was ascribed to the distortion of the coordination platforms caused by restriction of the vaulting methylene linkers.
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Affiliation(s)
- Masahiro Ikeshita
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Machikaneyama, Toyonaka, Osaka 560-8531, Japan
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, Narashino, Chiba 275-8575, Japan
| | - Nobuyuki Hara
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Yoshitane Imai
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Takeshi Naota
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Machikaneyama, Toyonaka, Osaka 560-8531, Japan
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5
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Kanbe A, Yokoi K, Yamada Y, Tsurui M, Kitagawa Y, Hasegawa Y, Ogata D, Yuasa J, Aoki S. Optical Resolution of Carboxylic Acid Derivatives of Homoleptic Cyclometalated Iridium(III) Complexes via Diastereomers Formed with Chiral Auxiliaries. Inorg Chem 2023; 62:11325-11341. [PMID: 37432912 PMCID: PMC10369494 DOI: 10.1021/acs.inorgchem.3c00685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Indexed: 07/13/2023]
Abstract
We report on a facile method for the optical resolution of cyclometalated iridium(III) (Ir(III)) complexes via diastereomers formed with chiral auxiliaries. The racemic carboxylic acids of Ir(III) complexes (fac-4 (fac-Ir(ppyCO2H)3 (ppy: 2-phenylpyridine)), fac-6 (fac-Ir(tpyCO2H)3 (tpy: 2-(4'-tolyl)pyridine)), and fac-13 (fac-Ir(mpiqCO2H)3 (mpiq: 1-(4'-methylphenyl)isoquinoline))) were converted into the diastereomers, Δ- and Λ-forms of fac-9 (from fac-6), fac-10 (from fac-4), fac-11 (from fac-6), and fac-14 (from fac-13), respectively, by the condensation with (1R,2R)-1,2-diaminocyclohexane or (1R,2R)-2-aminocyclohexanol. The resulting diastereomers were separated by HPLC (with a nonchiral column) or silica gel column chromatography, and their absolute stereochemistry was determined by X-ray single-crystal structure analysis and CD (circular dichroism) spectra. Spectra of all diastereomers of the Ir(III) complexes are reported. Hydrolysis of the ester moieties of Δ- and Λ-forms of fac-10, fac-11, and fac-14 gave both enantiomers of the corresponding carboxylic acid derivatives in the optically pure forms, Δ-fac and Λ-fac-4, -6, and -13, respectively.
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Affiliation(s)
- Azusa Kanbe
- Faculty
of Pharmaceutical Science, Tokyo University
of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Kenta Yokoi
- Faculty
of Pharmaceutical Science, Tokyo University
of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
| | - Yasuyuki Yamada
- Department
of Chemistry, Graduate School of Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan
- Research
Center for Materials Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan
- JST,
PRESTO, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan
| | - Makoto Tsurui
- Graduate
School of Chemical Sciences and Engineering, Hokkaido University, N13W8, Kita-ku, Sapporo, Hokkaido 060-8628, Japan
| | - Yuichi Kitagawa
- Faculty of
Engineering, Hokkaido University, Kita-13, Nishi-8, Kita-Ku, Sapporo, Hokkaido 060-8628, Japan
- Institute
for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Kita-21, Nishi-10, Kita-Ku, Sapporo, Hokkaido 001-0021, Japan
| | - Yasuchika Hasegawa
- Faculty of
Engineering, Hokkaido University, Kita-13, Nishi-8, Kita-Ku, Sapporo, Hokkaido 060-8628, Japan
- Institute
for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Kita-21, Nishi-10, Kita-Ku, Sapporo, Hokkaido 001-0021, Japan
| | - Daiji Ogata
- Faculty
of Science, Tokyo University of Science, 1-3 Kagurazaka,
Shinjuku-ku, Tokyo 162-8601, Japan
| | - Junpei Yuasa
- Faculty
of Science, Tokyo University of Science, 1-3 Kagurazaka,
Shinjuku-ku, Tokyo 162-8601, Japan
| | - Shin Aoki
- Faculty
of Pharmaceutical Science, Tokyo University
of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
- Research
Institute for Science and Technology (RIST), Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
- Research
Institute for Biomedical Science (RIBS), Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan
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6
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Horiuchi S, Yamaguchi T, Tessarolo J, Tanaka H, Sakuda E, Arikawa Y, Meggers E, Clever GH, Umakoshi K. Symmetry-breaking host-guest assembly in a hydrogen-bonded supramolecular system. Nat Commun 2023; 14:155. [PMID: 36631447 PMCID: PMC9834293 DOI: 10.1038/s41467-023-35850-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 01/04/2023] [Indexed: 01/13/2023] Open
Abstract
Bio-inspired self-assembly is invaluable to create well-defined giant structures from small molecular units. Owing to a large entropy loss in the self-assembly process, highly symmetric structures are typically obtained as thermodynamic products while formation of low symmetric assemblies is still challenging. In this study, we report the symmetry-breaking self-assembly of a defined C1-symmetric supramolecular structure from an Oh-symmetric hydrogen-bonded resorcin[4]arene capsule and C2-symmetric cationic bis-cyclometalated Ir complexes, carrying sterically demanding tertiary butyl (tBu) groups, on the basis of synergistic effects of weak binding forces. The flexible capsule framework shows a large structural change upon guest binding to form a distorted resorcin[4]arene hexameric capsule, providing an asymmetric cavity. Location of the chiral guest inside the anisotropic environment leads to modulation of its Electric Dipole (ED) and Magnetic Dipole (MD) transition moments in the excited state, causing an increased emission quantum yield, longer emission lifetime, and enhancement of the dissymmetry factor (glum) in the circularly polarized luminescence.
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Affiliation(s)
- Shinnosuke Horiuchi
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan. .,Department of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Straße 6, 44227, Dortmund, Germany. .,Department of Basic Science, Graduate School of Arts and Sciences, The University of Tokyo, 3-8-1 Komaba, Meguro-ku, Tokyo, 153-8902, Japan.
| | - Takumi Yamaguchi
- School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, 923-1292, Japan
| | - Jacopo Tessarolo
- Department of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Straße 6, 44227, Dortmund, Germany
| | - Hirotaka Tanaka
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Eri Sakuda
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan.,Department of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Straße 6, 44227, Dortmund, Germany
| | - Yasuhiro Arikawa
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Eric Meggers
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, 35043, Marburg, Germany
| | - Guido H Clever
- Department of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Straße 6, 44227, Dortmund, Germany.
| | - Keisuke Umakoshi
- Division of Chemistry and Materials Science, Graduate School of Engineering, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan.
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7
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Yu Gitlina A, Fadaei-Tirani F, Ruggi A, Plaice C, Severin K. Acid-base-induced fac → mer isomerization of luminescent iridium(iii) complexes. Chem Sci 2022; 13:10370-10374. [PMID: 36277648 PMCID: PMC9473533 DOI: 10.1039/d2sc02808e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Accepted: 07/21/2022] [Indexed: 11/21/2022] Open
Abstract
Luminescent Ir(C^N)3 complexes (C^N = cyclometalated arylpyridine ligand) exist in the form of two stable isomers with distinct photophysical and electrochemical properties: fac and mer. Herein, we show that fac-Ir(C^N)3 complexes can be converted into the thermodynamically less stable mer forms by a consecutive reaction with first acid and then base. The chemically induced isomerization is fast, quantitative, and stereoselective, and it can be inversed by light. The new isomerization process opens the possibility to use highly luminescent Ir(C^N)3 complexes as molecular switches.
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Affiliation(s)
- Anastasia Yu Gitlina
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Farzaneh Fadaei-Tirani
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Albert Ruggi
- Département de Chimie, Université de Fribourg 1700 Fribourg Switzerland
| | - Carolina Plaice
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
| | - Kay Severin
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL) 1015 Lausanne Switzerland
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8
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Enantiopure Cyclometalated Rh(III) and Ir(III) Complexes Displaying Rigid Configuration at Metal Center: Design, Structures, Chiroptical Properties and Role of the Iodide Ligand. CHEMISTRY 2022. [DOI: 10.3390/chemistry4010014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Enantiopure N-heterocyclic carbene half-sandwich metal complexes of the general formula [Cp*M(C^C:)I] (M = Rh, Ir; C^C: = NI-NHC; NI-H = Naphthalimide; NHC = N-heterocyclic carbene) are reported. The rhodium compound was obtained as a single isomer displaying six membered metallacycle and was resolved on chiral column chromatography to the corresponding enantiomers (S)-[Cp*Rh(C^C:)I] (S)-2 and (R)-[Cp*Rh(C^C:)I] (R)-2. The iridium congener, however, furnishes a pair of regioisomers, which were resolved into (S)-[Cp*Ir(C^C:)I] (S)-3 and (R)-[Cp*Ir(C^C:)I] (R)-3 and (S)-[Cp*Ir(C^C:)I] (S)-4 and (R)-[Cp*Ir(C^C:)I] (R)-4. These regioisomers differ from each other, only by the size of the metallacycle; five-membered for 3 and six-membered for 4. The molecular structures of (S)-2 and (S)-4 are reported. Moreover, the chiroptical properties of these compounds are presented and discussed. These compounds display exceptional stable configurations at the metal center in solution with enantiomerization barrier ΔG≠ up to 124 kJ/mol. This is because the nature of the naphthalimide-NHC clamp ligand and the iodide ligand contribute to their configuration’s robustness. In contrast to related complexes reported in the literature, which are often labile in solution.
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9
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Rapp MR, Leis W, Zinna F, Di Bari L, Arnold T, Speiser B, Seitz M, Bettinger HF. Bright Luminescence by Combining Chiral [2.2]Paracyclophane with a Boron-Nitrogen-Doped Polyaromatic Hydrocarbon Building Block. Chemistry 2022; 28:e202104161. [PMID: 34918840 PMCID: PMC9306876 DOI: 10.1002/chem.202104161] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Indexed: 11/11/2022]
Abstract
Novel BN-doped compounds based on chiral, tetrasubstituted [2.2]paracyclophane and NBN-benzo[f,g]tetracene were synthesized by Sonogashira-Hagihara coupling. Conjugated ethynyl linkers allow electronic communication between the π-electron systems through-bond, whereas through-space interactions are provided by strong π-π overlap between the pairs of NBN-building blocks. Excellent optical and chiroptical properties in racemic and enantiopure conditions were measured, with molar absorption coefficients up to ϵ=2.04×105 M-1 cm-1 , fluorescence quantum yields up to ΦPL =0.70, and intense, mirror-image electronic circular dichroism and circularly polarized luminescence signals of the magnitude of 10-3 for the absorption and luminescence dissymmetry factors. Computed glum,calcd. values match the experimental ones. Electroanalytical data show both oxidation and reduction of the ethynyl-linked tetra-NBN-substituted paracyclophane, with an overlap of two redox processes for oxidation leading to a diradical dication.
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Affiliation(s)
- Mario R. Rapp
- Institut für Organische ChemieUniversität TübingenAuf der Morgenstelle 1872076TübingenGermany
| | - Wolfgang Leis
- Institut für Anorganische ChemieUniversität TübingenAuf der Morgenstelle 1872076TübingenGermany
| | - Francesco Zinna
- Department of Chemistry and Industrial ChemistryUniversità di Pisa56124PisaItaly
| | - Lorenzo Di Bari
- Department of Chemistry and Industrial ChemistryUniversità di Pisa56124PisaItaly
| | - Tamara Arnold
- Institut für Organische ChemieUniversität TübingenAuf der Morgenstelle 1872076TübingenGermany
| | - Bernd Speiser
- Institut für Organische ChemieUniversität TübingenAuf der Morgenstelle 1872076TübingenGermany
| | - Michael Seitz
- Institut für Anorganische ChemieUniversität TübingenAuf der Morgenstelle 1872076TübingenGermany
| | - Holger F. Bettinger
- Institut für Organische ChemieUniversität TübingenAuf der Morgenstelle 1872076TübingenGermany
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10
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Gong J, Zhang X. Coordination-based circularly polarized luminescence emitters: Design strategy and application in sensing. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214329] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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11
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Ikeshita M, Furukawa S, Ishikawa T, Matsudaira K, Imai Y, Tsuno T. Enhancement of Chiroptical Responses of trans-Bis[(β-iminomethyl)naphthoxy]platinum(II) Complexes with Distorted Square Planar Coordination Geometry. Chemistry 2022; 11:e202100277. [PMID: 35099127 PMCID: PMC8973265 DOI: 10.1002/open.202100277] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 12/28/2021] [Indexed: 12/17/2022]
Abstract
The relationship between the coordination geometry and photophysical properties of trans‐bis[(β‐iminomethyl)naphthoxy]platinum(II) was investigated both experimentally and theoretically. A series of platinum(II) complexes with differently substituted iminomethyl groups were synthesized, and their photophysical properties were examined in solution, in the crystalline, and in the PMMA film‐dispersed state, respectively (PMMA=poly(methyl methacrylate)). These complexes showed structure‐dependent emission spectra, in which the color of the luminescence in the crystalline state varied over a range of about 40 nm depending on the specific bowl‐shaped molecular structure. The chiral complexes with (R,R)‐ and (S,S)‐configurations were found to have structure‐dependent chiroptical properties both in solution and the PMMA film‐dispersed state such that the intensity of circular dichroism (CD) and circularly polarized luminescence (CPL) were enhanced with bulky cyclic substituents at the nitrogen atoms. A theoretical study using density functional theory (DFT) and time‐dependent (TD)‐DFT calculations revealed that the enhancement of chiroptical responses is due to the amplification of the magnetic dipole moment caused by the distortion of the square planar geometry.
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Affiliation(s)
- Masahiro Ikeshita
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, 275-8575, Narashino, Chiba, Japan
| | - Sho Furukawa
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, 275-8575, Narashino, Chiba, Japan
| | - Takahiro Ishikawa
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, 275-8575, Narashino, Chiba, Japan
| | - Kana Matsudaira
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, 577-8502, Higashi, Osaka, Japan
| | - Yoshitane Imai
- Department of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, 577-8502, Higashi, Osaka, Japan
| | - Takashi Tsuno
- Department of Applied Molecular Chemistry, College of Industrial Technology, Nihon University, 275-8575, Narashino, Chiba, Japan
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12
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Hara K, Morimoto A, Matsudaira K, Suzuki S, Yagi S, Fujiki M, Imai Y. External Magnetic Field Driven, Ambidextrous Circularly Polarized Electroluminescence from Organic Light Emitting Diodes Containing Racemic Cyclometalated Iridium(III) Complexes. CHEMPHOTOCHEM 2022. [DOI: 10.1002/cptc.202100253] [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)
- Kengo Hara
- Department of Applied Chemistry Faculty of Science and Engineering Kindai University 3-4-1 Kowakae, Higashi-Osaka Osaka 577–8502 Japan
| | - Ami Morimoto
- Department of Applied Chemistry Graduate School of Engineering Osaka Prefecture University 1-1 Gakuen-cho, Naka-ku, Sakai Osaka 599–8531 Japan
| | - Kana Matsudaira
- Department of Applied Chemistry Faculty of Science and Engineering Kindai University 3-4-1 Kowakae, Higashi-Osaka Osaka 577–8502 Japan
| | - Satoko Suzuki
- JASCO Corporation 2967-5 Ishikawa, Hachioji Tokyo 192–8537 Japan
| | - Shigeyuki Yagi
- Department of Applied Chemistry Graduate School of Engineering Osaka Prefecture University 1-1 Gakuen-cho, Naka-ku, Sakai Osaka 599–8531 Japan
| | - Michiya Fujiki
- Graduate School of Science and Technology Nara Institute of Science and Technology 8916-5 Takayama, Ikoma Nara 630–0192 Japan
| | - Yoshitane Imai
- Department of Applied Chemistry Faculty of Science and Engineering Kindai University 3-4-1 Kowakae, Higashi-Osaka Osaka 577–8502 Japan
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13
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Jerwood K, Lowy P, Deeming L, Kariuki BM, Newman PD. Remote control: stereoselective coordination of electron-deficient 2,2'-bipyridine ligands to Re(I) and Ir(III) cores. Dalton Trans 2021; 50:16459-16463. [PMID: 34668511 DOI: 10.1039/d1dt02928b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Highly diastereoselective coordination of unsymmetrical cationic 2,2'-bipyridine ligands bearing a chiral amidinium substituent to [Re(CO)3Cl] and [Ir(PhPy)2]+ cores is reported. Binding strength and stereoselectivity have been correlated with the position of the amidinium group on the bipy. The 4-, 5- and 6-substituted ligands all produce C-[Re(CO)3(LH)Cl]X selectively, while only the 4-derivative gives preferred formation of Δ-[Ir(Phpy)2(4-LH)](BF4)2.
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Affiliation(s)
- Kimberley Jerwood
- School of Chemistry, Cardiff University, Cardiff, Wales, CF10 3AT, UK
| | - Phoebe Lowy
- School of Chemistry, Cardiff University, Cardiff, Wales, CF10 3AT, UK
| | - Laura Deeming
- School of Chemistry, Cardiff University, Cardiff, Wales, CF10 3AT, UK
| | - Benson M Kariuki
- School of Chemistry, Cardiff University, Cardiff, Wales, CF10 3AT, UK
| | - Paul D Newman
- Cardiff Catalysis Institute, School of Chemistry, Cardiff University, Cardiff, Wales, CF10 3AT, UK.
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14
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Gaydon Q, Bohle DS. Separation of Isomers and Mechanisms of Inversion of Stereochemistry of Group 9 d 6 Tris-Chelate Complexes of Hinokitiol. Inorg Chem 2021; 60:13567-13577. [PMID: 34436874 DOI: 10.1021/acs.inorgchem.1c01879] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Tris-chelate complexes of Co(III), Rh(III), and Ir(III) with 4-isopropyltropolone (hinokitiol or β-thujaplicin) form by the substitution of carbonate and chloride ligands from group 9 trivalent metal salts. The new complexes are neutral, are readily soluble in most organic solvents, and are brightly colored with strong charge transfer bands. The fac isomers of Co(hino)3 and Rh(hino)3 were isolated from the mixture by fractional recrystallization from ethanol. The remaining mixtures were respectively enriched by 5:3 and 4.4:3 for the mer isomer. The 1H NMR data show that the complexes exhibit remarkable stereochemical lability, which is unusual for diamagnetic d6 group 9 metals, with rotational barriers of 14.2 and 18.2 kcal/mol found for the inversion of stereochemistry of Co(hino)3 and Rh(hino)3. The low activation barriers, as well as the analysis of some key structural parameters, suggest that the inversion of stereochemistry occurs via a trigonal-twist (Bailar) mechanism. Facile substitution of a single hinokitiol ligand in the cobalt complex with ethylenediamine to form [Co(en)(hino)2]Cl also indicates that the tris-chelates are substitutionally and configurationally labile.
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Affiliation(s)
- Quentin Gaydon
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal H3A 0B8, Canada
| | - David Scott Bohle
- Department of Chemistry, McGill University, 801 Sherbrooke Street West, Montreal H3A 0B8, Canada
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15
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Prabodh A, Wang Y, Sinn S, Albertini P, Spies C, Spuling E, Yang LP, Jiang W, Bräse S, Biedermann F. Fluorescence detected circular dichroism (FDCD) for supramolecular host-guest complexes. Chem Sci 2021; 12:9420-9431. [PMID: 34349916 PMCID: PMC8278969 DOI: 10.1039/d1sc01411k] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 06/08/2021] [Indexed: 11/30/2022] Open
Abstract
Fluorescence-detected circular dichroism (FDCD) spectroscopy is applied for the first time to supramolecular host-guest and host-protein systems and compared to the more known electronic circular dichroism (ECD). We find that FDCD can be an excellent choice for common supramolecular applications, e.g. for the detection and chirality sensing of chiral organic analytes, as well as for reaction monitoring. Our comprehensive investigations demonstrate that FDCD can be conducted in favorable circumstances at much lower concentrations than ECD measurements, even in chromophoric and auto-emissive biofluids such as blood serum, overcoming the sensitivity limitation of absorbance-based chiroptical spectroscopy. Besides, the combined use of FDCD and ECD can provide additional valuable information about the system, e.g. the chemical identity of an analyte or hidden aggregation phenomena. We believe that simultaneous FDCD- and ECD-based chiroptical characterization of emissive supramolecular systems will be of general benefit for characterizing fluorescent, chiral supramolecular systems due to the higher information content obtained by their combined use.
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Affiliation(s)
- Amrutha Prabodh
- Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology (INT) Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen Germany
| | - Yichuan Wang
- Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology (INT) Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen Germany
- Karlsruhe Institute of Technology (KIT), Institute of Organic Chemistry Fritz-Haber-Weg 6 76131 Karlsruhe Germany
| | - Stephan Sinn
- Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology (INT) Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen Germany
| | | | - Christian Spies
- JASCO Deutschland GmbH Robert-Bosch-Str. 14, 64319 Pfungstadt Germany
| | - Eduard Spuling
- Karlsruhe Institute of Technology (KIT), Institute of Organic Chemistry Fritz-Haber-Weg 6 76131 Karlsruhe Germany
| | - Liu-Pan Yang
- Southern University of Science and Technology, Department of Chemistry Xueyuan Boulevard 1088, Nanshan District 518055 Shenzhen China
| | - Wei Jiang
- Southern University of Science and Technology, Department of Chemistry Xueyuan Boulevard 1088, Nanshan District 518055 Shenzhen China
| | - Stefan Bräse
- Karlsruhe Institute of Technology (KIT), Institute of Organic Chemistry Fritz-Haber-Weg 6 76131 Karlsruhe Germany
- Karlsruhe Institute of Technology (KIT), Institute of Biological and Chemical Systems - Functional Molecular Systems (ICBS-FMS) Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Frank Biedermann
- Karlsruhe Institute of Technology (KIT), Institute of Nanotechnology (INT) Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen Germany
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16
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Braker EE, Mukthar NFM, Schley ND, Ung G. Substituent Effect on the Circularly Polarized Luminescence of
C
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‐Symmetric Carbene‐Copper(I) Complexes. CHEMPHOTOCHEM 2021. [DOI: 10.1002/cptc.202100068] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Erin E. Braker
- Department of Chemistry University of Connecticut Storrs Connecticut 06269 USA
| | | | - Nathan D. Schley
- Department of Chemistry Vanderbilt University Nashville Tennessee 37235 USA
| | - Gaël Ung
- Department of Chemistry University of Connecticut Storrs Connecticut 06269 USA
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17
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Lee S, Lee Y, Kim K, Heo S, Jeong DY, Kim S, Cho J, Kim C, You Y. Twist to Boost: Circumventing Quantum Yield and Dissymmetry Factor Trade-Off in Circularly Polarized Luminescence. Inorg Chem 2021; 60:7738-7752. [PMID: 33760606 DOI: 10.1021/acs.inorgchem.1c00070] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Circularly polarized luminescence (CPL) enables promising applications in asymmetric photonics. However, the performances of CPL molecules do not yet meet the requirements of these applications. The shortcoming originates from the trade-off in CPL between the photoluminescence quantum yield (PLQY) and the photoluminescence dissymmetry factor (gPL). In this study, we developed a molecular strategy to circumvent this trade-off. Our approach takes advantage of the strong propensity of [Pt(N^C^N)Cl], where the N^C^N ligand is 1-(2-oxazoline)-3-(2-pyridyl)phenylate, to form face-to-face stacks. We introduced chiral substituents, including (S)-methyl, (R)- and (S)-isopropyl, and (S)-indanyl groups, into the ligand framework. This asymmetric control induces torsional displacements that give homohelical stacks of the Pt(II) complexes. X-ray single-crystal structure analyses for the (S)-isopropyl Pt(II) complex reveal the formation of a homohelical dimer with a Pt···Pt distance of 3.48 Å, which is less than the sum of the van der Waals radii of Pt. This helical stack elicits the metal-metal-to-ligand charge-transfer (MMLCT) transition that exhibits strong chiroptical activity due to the electric transition moment making an acute angle to the magnetic transition moment. The PLQY and gPL values of the MMLCT phosphorescence emission of the (S)-isopropyl Pt(II) complex are 0.49 and 8.4 × 10-4, which are improved by factors of ca. 6 and 4, respectively, relative to the values of the unimolecular emission (PLQY, 0.078; gPL, 2.4 × 10-4). Our photophysical measurements for the systematically controlled Pt(II) complexes reveal that the CPL amplifications depend on the chiral substituent. Our investigations also indicate that excimers are not responsible for the enhanced chiroptical activity. To demonstrate the effectiveness of our approach, organic electroluminescence devices were fabricated. The MMLCT emission devices were found to exhibit simultaneous enhancements in the external quantum efficiency (EQE, 9.7%) and the electroluminescence dissymmetry factor (gEL, 1.2 × 10-4) over the unimolecular emission devices (EQE, 5.8%; gEL, 0.3 × 10-4). These results demonstrate the usefulness of using the chiroptically active MMLCT emission for achieving an amplified CPL.
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Affiliation(s)
- Sumin Lee
- Division of Chemical Engineering and Materials Science, and Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Yongmoon Lee
- Graduate School of Convergence Science and Technology, and Inter-University Semiconductor Research Center, Seoul National University, Seoul 08826, Republic of Korea
| | - Kyungmin Kim
- Department of Emerging Materials Science, DGIST, Daegu 42988, Republic of Korea
| | - Seunga Heo
- Division of Chemical Engineering and Materials Science, and Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Dong Yeun Jeong
- Division of Chemical Engineering and Materials Science, and Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Sangsub Kim
- Graduate School of Convergence Science and Technology, and Inter-University Semiconductor Research Center, Seoul National University, Seoul 08826, Republic of Korea
| | - Jaeheung Cho
- Department of Emerging Materials Science, DGIST, Daegu 42988, Republic of Korea.,Department of Chemistry, UNIST, Ulsan 44919, Republic of Korea
| | - Changsoon Kim
- Graduate School of Convergence Science and Technology, and Inter-University Semiconductor Research Center, Seoul National University, Seoul 08826, Republic of Korea
| | - Youngmin You
- Division of Chemical Engineering and Materials Science, and Graduate Program in System Health Science and Engineering, Ewha Womans University, Seoul 03760, Republic of Korea
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18
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Kuznetsov KM, Kritchenkov IS, Shakirova JR, Gurzhiy VV, Pavlovskiy VV, Porsev VV, Sokolov VV, Tunik SP. Red‐to‐NIR Iridium(III) Emitters: Synthesis, Photophysical and Computational Study, the Effects of Cyclometallating and β‐Diketonate Ligands. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100189] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Kirill M. Kuznetsov
- Institute of Chemistry St. Petersburg State University Universitetskii pr. 26 198504 St. Petersburg Russia
| | - Ilya S. Kritchenkov
- Institute of Chemistry St. Petersburg State University Universitetskii pr. 26 198504 St. Petersburg Russia
| | - Julia R. Shakirova
- Institute of Chemistry St. Petersburg State University Universitetskii pr. 26 198504 St. Petersburg Russia
| | - Vladislav V. Gurzhiy
- Institute of Earth Sciences St. Petersburg State University University emb. 7/9 199034 St. Petersburg Russia
| | - Vladimir V. Pavlovskiy
- Institute of Chemistry St. Petersburg State University Universitetskii pr. 26 198504 St. Petersburg Russia
| | - Vitaly V. Porsev
- Institute of Chemistry St. Petersburg State University Universitetskii pr. 26 198504 St. Petersburg Russia
| | - Viktor V. Sokolov
- Institute of Chemistry St. Petersburg State University Universitetskii pr. 26 198504 St. Petersburg Russia
| | - Sergey P. Tunik
- Institute of Chemistry St. Petersburg State University Universitetskii pr. 26 198504 St. Petersburg Russia
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19
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August DP, Jaramillo-Garcia J, Leigh DA, Valero A, Vitorica-Yrezabal IJ. A Chiral Cyclometalated Iridium Star of David [2]Catenane. J Am Chem Soc 2021; 143:1154-1161. [DOI: 10.1021/jacs.0c12038] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- David P. August
- Department of Chemistry, University of Manchester, Manchester M13 9PL, United Kingdom
| | | | - David A. Leigh
- Department of Chemistry, University of Manchester, Manchester M13 9PL, United Kingdom
| | - Alberto Valero
- Department of Chemistry, University of Manchester, Manchester M13 9PL, United Kingdom
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20
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Doistau B, Jiménez JR, Piguet C. Beyond Chiral Organic (p-Block) Chromophores for Circularly Polarized Luminescence: The Success of d-Block and f-Block Chiral Complexes. Front Chem 2020; 8:555. [PMID: 32850617 PMCID: PMC7399180 DOI: 10.3389/fchem.2020.00555] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 05/29/2020] [Indexed: 12/16/2022] Open
Abstract
Chiral molecules are essential for the development of advanced technological applications in spintronic and photonic. The best systems should produce large circularly polarized luminescence (CPL) as estimated by their dissymmetry factor (g lum), which can reach the maximum values of -2 ≤ g lum ≤ 2 when either pure right- or left-handed polarized light is emitted after standard excitation. For matching this requirement, theoretical considerations indicate that optical transitions with large magnetic and weak electric transition dipole moments represent the holy grail of CPL. Because of their detrimental strong and allowed electric dipole transitions, popular chiral emissive organic molecules display generally moderate dissymmetry factors (10-5 ≤ g lum ≤ 10-3). However, recent efforts in this field show that g lum can be significantly enhanced when the chiral organic activators are part of chiral supramolecular assemblies or of liquid crystalline materials. At the other extreme, chiral EuIII- and SmIII-based complexes, which possess intra-shell parity-forbidden electric but allowed magnetic dipole transitions, have yielded the largest dissymmetry factor reported so far with g lum ~ 1.38. Consequently, 4f-based metal complexes with strong CPL are currently the best candidates for potential technological applications. They however suffer from the need for highly pure samples and from considerable production costs. In this context, chiral earth-abundant and cheap d-block metal complexes benefit from a renewed interest according that their CPL signal can be optimized despite the larger covalency displayed by d-block cations compared with 4f-block analogs. This essay thus aims at providing a minimum overview of the theoretical aspects rationalizing circularly polarized luminescence and their exploitation for the design of chiral emissive metal complexes with strong CPL. Beyond the corroboration that f-f transitions are ideal candidates for generating large dissymmetry factors, a special attention is focused on the recent attempts to use chiral CrIII-based complexes that reach values of g lum up to 0.2. This could pave the way for replacing high-cost rare earths with cheap transition metals for CPL applications.
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Affiliation(s)
- Benjamin Doistau
- Department of Inorganic and Analytical Chemistry, University of Geneva, Geneva, Switzerland
| | - Juan-Ramón Jiménez
- Department of Inorganic and Analytical Chemistry, University of Geneva, Geneva, Switzerland
| | - Claude Piguet
- Department of Inorganic and Analytical Chemistry, University of Geneva, Geneva, Switzerland
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21
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Ayers KM, Schley ND, Ung G. Circularly Polarized Luminescence from Enantiopure C2-Symmetrical Tetrakis(2-pyridylmethyl)-1,2-diaminocyclohexane Lanthanide Complexes. Inorg Chem 2020; 59:7657-7665. [DOI: 10.1021/acs.inorgchem.0c00628] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Kaitlynn M. Ayers
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
| | - Nathan D. Schley
- Department of Chemistry, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Gaël Ung
- Department of Chemistry, University of Connecticut, Storrs, Connecticut 06269, United States
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22
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Szabó M, Kleineisel M, Németh K, Domján A, Vass E, Szilvágyi G. Twisted paddlewheel rhodium complexes: Contribution of central and axial chirality to ECD, VCD, and NMR spectra. Chirality 2020; 32:446-456. [PMID: 32031731 DOI: 10.1002/chir.23182] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 01/03/2020] [Accepted: 01/17/2020] [Indexed: 01/14/2023]
Abstract
Dirhodium complexes bearing N-substituted chiral amino acid ligands are investigated. These complexes have an unusual twisted paddlewheel structure, showing inherent chirality. We would like to demonstrate that parallel application of chiroptical spectroscopic methods (ECD and VCD) and NMR spectroscopy combined with quantum chemical calculations constitutes a powerful tool to determine the configuration of the complexes unequivocally. Two chiroptical methods are needed to determine the absolute configuration: ECD for the coordinated nitrogen atom and VCD for the rhodium core. A quick to use NMR method is also presented: Upon the coordination of small molecules in the axial position, the relative configuration of both the rhodium core and the nitrogen atom can be determined simultaneously by studying spatial proximities provided by 1D NOE spectra.
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Affiliation(s)
- Márk Szabó
- Institute of Chemistry, Eötvös Loránd University, Budapest, Hungary.,NMR Laboratory, Hungarian Academy of Sciences, Research Centre for Natural Sciences, Instrumentation Centre, Budapest, Hungary
| | - Márk Kleineisel
- Institute of Chemistry, Eötvös Loránd University, Budapest, Hungary
| | - Krisztina Németh
- MS Metabolomics Laboratory, Hungarian Academy of Sciences, Research Center for Natural Sciences, Instrumentation Centre, Budapest, Hungary
| | - Attila Domján
- NMR Laboratory, Hungarian Academy of Sciences, Research Centre for Natural Sciences, Instrumentation Centre, Budapest, Hungary
| | - Elemér Vass
- Institute of Chemistry, Eötvös Loránd University, Budapest, Hungary
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23
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Deng M, Mukthar NFM, Schley ND, Ung G. Yellow Circularly Polarized Luminescence from
C
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‐Symmetrical Copper(I) Complexes. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201913672] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Min Deng
- Department of Chemistry University of Connecticut Storrs CT 06269 USA
| | | | - Nathan D. Schley
- Department of Chemistry Vanderbilt University Nashville TN 37235 USA
| | - Gaël Ung
- Department of Chemistry University of Connecticut Storrs CT 06269 USA
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24
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Deng M, Mukthar NFM, Schley ND, Ung G. Yellow Circularly Polarized Luminescence from
C
1
‐Symmetrical Copper(I) Complexes. Angew Chem Int Ed Engl 2019; 59:1228-1231. [DOI: 10.1002/anie.201913672] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2019] [Revised: 11/04/2019] [Indexed: 12/18/2022]
Affiliation(s)
- Min Deng
- Department of Chemistry University of Connecticut Storrs CT 06269 USA
| | | | - Nathan D. Schley
- Department of Chemistry Vanderbilt University Nashville TN 37235 USA
| | - Gaël Ung
- Department of Chemistry University of Connecticut Storrs CT 06269 USA
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25
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Gendron F, Moore Ii B, Cador O, Pointillart F, Autschbach J, Le Guennic B. Ab Initio Study of Circular Dichroism and Circularly Polarized Luminescence of Spin-Allowed and Spin-Forbidden Transitions: From Organic Ketones to Lanthanide Complexes. J Chem Theory Comput 2019; 15:4140-4155. [PMID: 31125219 DOI: 10.1021/acs.jctc.9b00286] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Complete and restricted active space self-consistent field (CAS-/RAS-SCF) wave function methods are applied for the calculation of circular dichroism (CD) and circularly polarized luminescence (CPL) of a series of molecules comprising four organic ketones, the chiral cobalt(III) complex [Co(en)3]3+, and the europium(III) complex [Eu(DPA)3]3-. The ab initio results are in good agreement with the experimental data and previous results obtained with Kohn-Sham density functional theory in the case of the spin-allowed transitions. CD and CPL properties are calculated ab initio for the spin-forbidden transitions of both a transition metal and a lanthanide complex.
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Affiliation(s)
- Frédéric Gendron
- Univ Rennes, CNRS , ISCR (Institut des Sciences Chimiques de Rennes) , UMR 6226, F-35000 Rennes , France
| | - Barry Moore Ii
- Department of Chemistry , University at Buffalo, State University of New York , Buffalo , New York 14260-3000 , United States
| | - Olivier Cador
- Univ Rennes, CNRS , ISCR (Institut des Sciences Chimiques de Rennes) , UMR 6226, F-35000 Rennes , France
| | - Fabrice Pointillart
- Univ Rennes, CNRS , ISCR (Institut des Sciences Chimiques de Rennes) , UMR 6226, F-35000 Rennes , France
| | - Jochen Autschbach
- Department of Chemistry , University at Buffalo, State University of New York , Buffalo , New York 14260-3000 , United States
| | - Boris Le Guennic
- Univ Rennes, CNRS , ISCR (Institut des Sciences Chimiques de Rennes) , UMR 6226, F-35000 Rennes , France
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26
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Macé A, Hellou N, Hammoud J, Martin C, Gauthier ES, Favereau L, Roisnel T, Caytan E, Nasser G, Vanthuyne N, Williams JAG, Berrée F, Carboni B, Crassous J. An Enantiopure Cyclometallated Iridium Complex Displaying Long‐Lived Phosphorescence both in Solution and in the Solid State. Helv Chim Acta 2019. [DOI: 10.1002/hlca.201900044] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Aurélie Macé
- Univ Rennes, CNRSISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226 FR-35000 Rennes France
| | - Nora Hellou
- Univ Rennes, CNRSISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226 FR-35000 Rennes France
| | - Joanna Hammoud
- Univ Rennes, CNRSISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226 FR-35000 Rennes France
| | - Clothilde Martin
- Univ Rennes, CNRSISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226 FR-35000 Rennes France
| | - Etienne S. Gauthier
- Univ Rennes, CNRSISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226 FR-35000 Rennes France
| | - Ludovic Favereau
- Univ Rennes, CNRSISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226 FR-35000 Rennes France
| | - Thierry Roisnel
- Univ Rennes, CNRSISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226 FR-35000 Rennes France
| | - Elsa Caytan
- Univ Rennes, CNRSISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226 FR-35000 Rennes France
| | - Ghassan Nasser
- Inorganic and Organometallic Coordination Chemistry Laboratory (LCIO)Lebanese University, Rafic Hariri University Campus, Faculty of Sciences I Hadath Lebanon
| | - Nicolas Vanthuyne
- Aix Marseille UniversityCNRS, Centrale Marseille, iSm2 FR–13284 Marseille France
| | | | - Fabienne Berrée
- Univ Rennes, CNRSISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226 FR-35000 Rennes France
| | - Bertrand Carboni
- Univ Rennes, CNRSISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226 FR-35000 Rennes France
| | - Jeanne Crassous
- Univ Rennes, CNRSISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226 FR-35000 Rennes France
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27
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Traskovskis K, Kokars V, Belyakov S, Lesina N, Mihailovs I, Vembris A. Emission Enhancement by Intramolecular Stacking between Heteroleptic Iridium(III) Complex and Flexibly Bridged Aromatic Pendant Group. Inorg Chem 2019; 58:4214-4222. [DOI: 10.1021/acs.inorgchem.8b03273] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kaspars Traskovskis
- Institute of Applied Chemistry, Riga Technical University, 3/7 Paula Valdena Street, Riga LV-1048, Latvia
| | - Valdis Kokars
- Institute of Applied Chemistry, Riga Technical University, 3/7 Paula Valdena Street, Riga LV-1048, Latvia
| | - Sergey Belyakov
- Latvian Institute of Organic Synthesis, 21 Aizkraukles Street, Riga LV-1006, Latvia
| | - Natalija Lesina
- Institute of Solid State Physics, University of Latvia, 8 Kengaraga Street, Riga LV-1063, Latvia
| | - Igors Mihailovs
- Institute of Applied Chemistry, Riga Technical University, 3/7 Paula Valdena Street, Riga LV-1048, Latvia
- Institute of Solid State Physics, University of Latvia, 8 Kengaraga Street, Riga LV-1063, Latvia
| | - Aivars Vembris
- Institute of Solid State Physics, University of Latvia, 8 Kengaraga Street, Riga LV-1063, Latvia
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28
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Song J, Wang M, Xu X, Qu L, Zhou X, Xiang H. 1D-helical platinum(ii) complexes bearing metal-induced chirality, aggregation-induced red phosphorescence, and circularly polarized luminescence. Dalton Trans 2019; 48:4420-4428. [DOI: 10.1039/c8dt03615b] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Binaphthyls-linked Pt(ii) complexes with metal-induced chirality self-assemble to build 1D M or P helices and show aggregation/racemization-induced and circularly polarized luminescence.
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Affiliation(s)
- Jintong Song
- College of Chemistry
- Sichuan University
- Chengdu
- China
| | - Man Wang
- College of Chemistry
- Sichuan University
- Chengdu
- China
| | - Xuemei Xu
- College of Chemistry
- Sichuan University
- Chengdu
- China
| | - Lang Qu
- College of Chemistry
- Sichuan University
- Chengdu
- China
| | - Xiangge Zhou
- College of Chemistry
- Sichuan University
- Chengdu
- China
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29
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Yan ZP, Liao K, Han HB, Su J, Zheng YX, Zuo JL. Chiral iridium(iii) complexes with four-membered Ir–S–P–S chelating rings for high-performance circularly polarized OLEDs. Chem Commun (Camb) 2019; 55:8215-8218. [DOI: 10.1039/c9cc03915e] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
CP-OLEDs with two series of chiral iridium(iii) complexes based on four-membered Ir–S–P–S chelating rings and chiral BINOL-based derivatives show excellent electroluminescence performances with obvious CPEL properties.
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Affiliation(s)
- Zhi-Ping Yan
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Kang Liao
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Hua-Bo Han
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Jian Su
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - You-Xuan Zheng
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Jing-Lin Zuo
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
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30
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Manguin R, Pichon D, Tarrieu R, Vives T, Roisnel T, Dorcet V, Crévisy C, Miqueu K, Favereau L, Crassous J, Mauduit M, Baslé O. A kinetic resolution strategy for the synthesis of chiral octahedral NHC–iridium(iii) catalysts. Chem Commun (Camb) 2019; 55:6058-6061. [DOI: 10.1039/c9cc02434d] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The transmetalation reaction of a chiral-bidentate NHC–silver complex to racemic [lr(μ-Cl)(ppy)2]2 operates with kinetic resolution leading to chiral octahedral NHC–iridium(iii) complexes and enantio-enriched bis-cyclometalated iridium(iii) complexes.
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Affiliation(s)
- Romane Manguin
- Univ. Rennes
- Ecole Nationale Supérieure de Chimie de Rennes
- CNRS, ISCR – UMR 6226
- F-35000 Rennes
- France
| | - Delphine Pichon
- Univ. Rennes
- Ecole Nationale Supérieure de Chimie de Rennes
- CNRS, ISCR – UMR 6226
- F-35000 Rennes
- France
| | - Robert Tarrieu
- Univ. Rennes
- Ecole Nationale Supérieure de Chimie de Rennes
- CNRS, ISCR – UMR 6226
- F-35000 Rennes
- France
| | - Thomas Vives
- Univ. Rennes
- Ecole Nationale Supérieure de Chimie de Rennes
- CNRS, ISCR – UMR 6226
- F-35000 Rennes
- France
| | | | | | - Christophe Crévisy
- Univ. Rennes
- Ecole Nationale Supérieure de Chimie de Rennes
- CNRS, ISCR – UMR 6226
- F-35000 Rennes
- France
| | - Karinne Miqueu
- CNRS/Univ. Pau & Pays de l'Adour
- Institut des Sciences Analytiques et de Physico-Chimie pour l’environnement et les Matériaux
- IPREM
- UMR 5254
- Pau
| | | | | | - Marc Mauduit
- Univ. Rennes
- Ecole Nationale Supérieure de Chimie de Rennes
- CNRS, ISCR – UMR 6226
- F-35000 Rennes
- France
| | - Olivier Baslé
- Univ. Rennes
- Ecole Nationale Supérieure de Chimie de Rennes
- CNRS, ISCR – UMR 6226
- F-35000 Rennes
- France
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31
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Park G, Kim H, Yang H, Park KR, Song I, Oh JH, Kim C, You Y. Amplified circularly polarized phosphorescence from co-assemblies of platinum(ii) complexes. Chem Sci 2018; 10:1294-1301. [PMID: 30809343 PMCID: PMC6357861 DOI: 10.1039/c8sc04509g] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Accepted: 11/29/2018] [Indexed: 01/08/2023] Open
Abstract
Molecules capable of producing zero-field circularly polarized phosphorescence (CPP) are highly valuable for chiroptoelectronic applications that rely on triplet exciton. However, the paucity of tractable molecular design rules for obtaining CPP emission has inhibited full utilization. We report amplification of CPP by the formation of helical co-assemblies consisting of achiral square planar cycloplatinated complexes and small fractions of homochiral cycloplatinated complexes. The latter has a unique Pfeiffer effect during the formation of superhelical co-assemblies, enabling versatile chiroptical control. Large dissymmetry factors in electronic absorption (g abs, 0.020) and phosphorescence emission (g lum, 0.064) are observed from the co-assemblies. These values are two orders of magnitude improved relative to those of individual molecules. In addition, photoluminescence quantum yields (PLQY) also increase by a factor of ten. Our structural, photophysical, and quantum chemical investigations reveal that the chiroptical amplification is attributable to utilization of both the magnetically allowed electronic transition and asymmetric coupling of excitons. The strategy overcomes the trade-off between g lum and PLQY which has frequently been found for previous molecular emitters of circularly polarized luminescence. It is anticipated that our study will provide new insight into the future research for the exploitation of the full potential of CPP.
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Affiliation(s)
- Gyurim Park
- Division of Chemical Engineering and Materials Science , Ewha Womans University , Seoul 03760 , The Republic of Korea .
| | - Hyungchae Kim
- Graduate School of Convergence Science and Technology , Inter-University Semiconductor Research Center , Seoul National University , Seoul 08826 , The Republic of Korea
| | - Hoichang Yang
- Department of Chemical Engineering , Inha University , Incheon 22212 , The Republic of Korea
| | - Kyung Ryoul Park
- Graduate School of Convergence Science and Technology , Inter-University Semiconductor Research Center , Seoul National University , Seoul 08826 , The Republic of Korea
| | - Inho Song
- School of Chemical and Biological Engineering , Seoul National University , Seoul 08826 , The Republic of Korea.,Department of Chemical Engineering , Pohang University of Science and Technology (POSTECH) , Pohang , Gyeongbuk 37673 , The Republic of Korea
| | - Joon Hak Oh
- School of Chemical and Biological Engineering , Seoul National University , Seoul 08826 , The Republic of Korea
| | - Changsoon Kim
- Graduate School of Convergence Science and Technology , Inter-University Semiconductor Research Center , Seoul National University , Seoul 08826 , The Republic of Korea
| | - Youngmin You
- Division of Chemical Engineering and Materials Science , Ewha Womans University , Seoul 03760 , The Republic of Korea .
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32
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Yoshikawa N, Yamazaki S, Kato N, Kanehisa N, Inoue T, Nakata E, Takashima H. Study of the triplet excited states and DFT calculations of iridium(III) complexes with mixed ligands. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.03.064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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33
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Kottisch V, Supej MJ, Fors BP. Enhancing Temporal Control and Enabling Chain-End Modification in Photoregulated Cationic Polymerizations by Using Iridium-Based Catalysts. Angew Chem Int Ed Engl 2018; 57:8260-8264. [PMID: 29750387 DOI: 10.1002/anie.201804111] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 05/01/2018] [Indexed: 11/11/2022]
Abstract
Gaining temporal control over chain growth is a key challenge in the enhancement of controlled living polymerizations. Though research on photocontrolled polymerizations is still in its infancy, it has already proven useful in the development of previously inaccessible materials. Photocontrol has now been extended to cationic polymerizations using 2,4,6-triarylpyrylium salts as photocatalysts. Despite the ability to stop polymerization for a short time, monomer conversion was observed over long dark periods. Improved catalyst systems based on Ir complexes give optimal temporal control over chain growth. The excellent stability of these complexes and the ability to tune the excited and ground state redox potentials to regulate the number of monomer additions per cation formed allows polymerization to be halted for more than 20 hours. The excellent stability of these iridium catalysts in the presence of more nucleophilic species enables chain-end functionalization of these polymers.
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Affiliation(s)
- Veronika Kottisch
- Department of Chemistry and Chemical Biology, Cornell University, Baker Lab, 14853, Ithaca, USA
| | - Michael J Supej
- Department of Chemistry and Chemical Biology, Cornell University, Baker Lab, 14853, Ithaca, USA
| | - Brett P Fors
- Department of Chemistry and Chemical Biology, Cornell University, Baker Lab, 14853, Ithaca, USA
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34
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Kottisch V, Supej MJ, Fors BP. Enhancing Temporal Control and Enabling Chain‐End Modification in Photoregulated Cationic Polymerizations by Using Iridium‐Based Catalysts. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201804111] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Veronika Kottisch
- Department of Chemistry and Chemical Biology Cornell University Baker Lab 14853 Ithaca USA
| | - Michael J. Supej
- Department of Chemistry and Chemical Biology Cornell University Baker Lab 14853 Ithaca USA
| | - Brett P. Fors
- Department of Chemistry and Chemical Biology Cornell University Baker Lab 14853 Ithaca USA
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35
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Egidi F, Fusè M, Baiardi A, Bloino J, Li X, Barone V. Computational simulation of vibrationally resolved spectra for spin-forbidden transitions. Chirality 2018; 30:850-865. [PMID: 29727500 DOI: 10.1002/chir.22864] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 03/22/2018] [Accepted: 03/23/2018] [Indexed: 12/25/2022]
Abstract
In this computational study, we illustrate a method for computing phosphorescence and circularly polarized phosphorescence spectra of molecular systems, which takes into account vibronic effects including both Franck-Condon and Herzberg-Teller contributions. The singlet and triplet states involved in the phosphorescent emission are described within the harmonic approximation, and the method fully takes mode-mixing effects into account when evaluating Franck-Condon integrals. Spin-orbit couplings, which are responsible for these otherwise forbidden phenomena, are accounted for by means of a relativistic two-component time-dependent density functional theory method. The model is applied to two types of chiral systems: camphorquinone, a rigid organic system that allows for an extensive benchmark, and some members of a class of iridium complexes. The merits and shortcomings of the methods are discussed, and some perspectives for future developments are offered.
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Affiliation(s)
| | | | | | - Julien Bloino
- Institute of Chemistry of Organometallic Compounds, National Research Council of Italy, Pisa, Italy
| | - Xiaosong Li
- Department of Chemistry, University of Washington, Seattle, Washington, USA
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36
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Li TY, Zheng YX, Zhou YH. Iridium(iii) phosphorescent complexes with dual stereogenic centers: single crystal, electronic circular dichroism evidence and circularly polarized luminescence properties. Dalton Trans 2018; 45:19234-19237. [PMID: 27874902 DOI: 10.1039/c6dt04030f] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Iridium complexes with a chiral metal center and chiral carbons, Λ/Δ-(dfppy)2Ir(chty-R) and Λ/Δ-(dfppy)2Ir(chty-S), were synthesized and characterized. These isomers have the same steady-state photophysical properties, and obvious offsets in ECD spectra highlight both the chiral sources. Each enantiomeric couple shows mirror-image CPL bands with a dissymmetry factor in the order of 10-3.
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Affiliation(s)
- Tian-Yi Li
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China. and Dresden Integrated Center for Applied Physics and Photonic Materials, Technische Universität Dresden, George-Bähr-Str.1, 01069 Dresden, Germany
| | - You-Xuan Zheng
- State Key Laboratory of Coordination Chemistry, Collaborative Innovation Center of Advanced Microstructures, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, P. R. China.
| | - Yong-Hui Zhou
- Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, College of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, P. R. China.
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37
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Yan ZP, Luo XF, Liao K, Lin ZX, Wu ZG, Zhou YH, Zheng YX. The Taiji and Eight Trigrams chemistry philosophy of chiral iridium(iii) complexes with triplex stereogenic centers. Dalton Trans 2018; 47:4045-4048. [DOI: 10.1039/c8dt00264a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Eight Ir(iii) isomers with triplex stereogenic centers are corresponding to the old Chinese philosophy Taiji and Eight Trigrams. The ECD and CPL spectra of four pair isomers show perfect mirror-images with a glum factor around 0.003.
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Affiliation(s)
- Zhi-Ping Yan
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Xu-Feng Luo
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Kang Liao
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Zi-Xuan Lin
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Zheng-Guang Wu
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
| | - Yong-Hui Zhou
- Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology
- Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control
- College of Environmental Science and Engineering
- Nanjing University of Information Science & Technology
- Nanjing 210044
| | - You-Xuan Zheng
- State Key Laboratory of Coordination Chemistry
- Collaborative Innovation Center of Advanced Microstructures
- Jiangsu Key Laboratory of Advanced Organic Materials
- School of Chemistry and Chemical Engineering
- Nanjing University
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38
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Takimoto K, Tamura K, Watanabe Y, Yamagishi A, Sato H. Microscopic chiral pockets in a tris(chelated) iridium(iii) complex as sites for dynamic enantioselective quenching. NEW J CHEM 2018. [DOI: 10.1039/c7nj04688j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
A microscopic pocket surrounded by bulky ligands in Ir(iii) acted as a site discriminating the chirality of an approaching molecule.
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Affiliation(s)
- Kazuyoshi Takimoto
- Department of Chemistry
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Kenji Tamura
- National Institute for Materials Science
- Tsukuba 305-0044
- Japan
| | - Yutaka Watanabe
- Department of Chemistry
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
| | | | - Hisako Sato
- Department of Chemistry
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
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39
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Kajjam AB, Vaidyanathan S. Structural Mimics of Phenyl Pyridine (ppy) - Substituted, Phosphorescent Cyclometalated Homo and Heteroleptic Iridium(III) Complexes for Organic Light Emitting Diodes - An Overview. CHEM REC 2017; 18:293-349. [PMID: 28929624 DOI: 10.1002/tcr.201700035] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Indexed: 01/13/2023]
Abstract
Today organic light emitting diodes are a topic of significant academic and industrial research interest. OLED technology is used in commercially available displays, and efforts have been directed to improve this technology. Design and synthesis of phosphorescent based transition metals are capable of harvesting both singlet and triplet excitons and achieve 100 % internal quantum efficiency is an active area of research. Among all the transition metals, iridium is considered a prime candidate for OLEDs due to its prominent photophysical characteristics. In the present review, we have concentrated on the Iridium based homo and heteroleptic complexes that have dissimilar substitutions on phenylpyridine ligands, different ancillary ligands and the effect of substitution on HOMO/LUMO energies and a brief discussion and correlation on the photophysical, electrochemical and device performances of the different complexes have been reviewed for organic light emitting diodes.
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Affiliation(s)
- Aravind Babu Kajjam
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha, India
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40
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Li LP, Yao SY, Ou YL, Wei LQ, Ye BH. Diastereoselective Synthesis and Photophysical Properties of Bis-Cyclometalated Ir(III) Stereoisomers with Dual Stereocenters. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00406] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Li-Ping Li
- MOE Key Laboratory of Bioinorganic
and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, People’s Republic of China
| | - Su-Yang Yao
- MOE Key Laboratory of Bioinorganic
and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, People’s Republic of China
| | - Yan-Ling Ou
- MOE Key Laboratory of Bioinorganic
and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, People’s Republic of China
| | - Lian-Qiang Wei
- MOE Key Laboratory of Bioinorganic
and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, People’s Republic of China
| | - Bao-Hui Ye
- MOE Key Laboratory of Bioinorganic
and Synthetic Chemistry, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, People’s Republic of China
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41
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Lu GZ, Su N, Li Y, Zheng YX. Efficient electroluminescence of platinum complexes containing pinene sterically hindered spacer. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.05.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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42
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Hellou N, Srebro‐Hooper M, Favereau L, Zinna F, Caytan E, Toupet L, Dorcet V, Jean M, Vanthuyne N, Williams JAG, Di Bari L, Autschbach J, Crassous J. Enantiopure Cycloiridiated Complexes Bearing a Pentahelicenic N‐Heterocyclic Carbene and Displaying Long‐Lived Circularly Polarized Phosphorescence. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201704263] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Nora Hellou
- Institut des Sciences Chimiques de Rennes UMR 6226, Institut de Physique de Rennes, UMR 6251 CNRS Université de Rennes 1 Campus de Beaulieu 35042 Rennes Cedex France
| | | | - Ludovic Favereau
- Institut des Sciences Chimiques de Rennes UMR 6226, Institut de Physique de Rennes, UMR 6251 CNRS Université de Rennes 1 Campus de Beaulieu 35042 Rennes Cedex France
| | - Francesco Zinna
- Dipartimento di Chimica e Chimica Industriale University of Pisa via Moruzzi 13 56124 Pisa Italy
- Present address: Université de Genève Département de Chimie Organique Quai Ernest-Ansermet 30 1211 Genève 4 Switzerland
| | - Elsa Caytan
- Institut des Sciences Chimiques de Rennes UMR 6226, Institut de Physique de Rennes, UMR 6251 CNRS Université de Rennes 1 Campus de Beaulieu 35042 Rennes Cedex France
| | - Loïc Toupet
- Institut des Sciences Chimiques de Rennes UMR 6226, Institut de Physique de Rennes, UMR 6251 CNRS Université de Rennes 1 Campus de Beaulieu 35042 Rennes Cedex France
| | - Vincent Dorcet
- Institut des Sciences Chimiques de Rennes UMR 6226, Institut de Physique de Rennes, UMR 6251 CNRS Université de Rennes 1 Campus de Beaulieu 35042 Rennes Cedex France
| | - Marion Jean
- Aix Marseille University, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Nicolas Vanthuyne
- Aix Marseille University, CNRS, Centrale Marseille, iSm2 Marseille France
| | | | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica Industriale University of Pisa via Moruzzi 13 56124 Pisa Italy
| | - Jochen Autschbach
- Department of Chemistry University at Buffalo, State University of New York Buffalo NY 14260 USA
| | - Jeanne Crassous
- Institut des Sciences Chimiques de Rennes UMR 6226, Institut de Physique de Rennes, UMR 6251 CNRS Université de Rennes 1 Campus de Beaulieu 35042 Rennes Cedex France
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43
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Hellou N, Srebro‐Hooper M, Favereau L, Zinna F, Caytan E, Toupet L, Dorcet V, Jean M, Vanthuyne N, Williams JAG, Di Bari L, Autschbach J, Crassous J. Enantiopure Cycloiridiated Complexes Bearing a Pentahelicenic N‐Heterocyclic Carbene and Displaying Long‐Lived Circularly Polarized Phosphorescence. Angew Chem Int Ed Engl 2017; 56:8236-8239. [DOI: 10.1002/anie.201704263] [Citation(s) in RCA: 120] [Impact Index Per Article: 17.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Indexed: 11/06/2022]
Affiliation(s)
- Nora Hellou
- Institut des Sciences Chimiques de Rennes UMR 6226, Institut de Physique de Rennes, UMR 6251 CNRS Université de Rennes 1 Campus de Beaulieu 35042 Rennes Cedex France
| | | | - Ludovic Favereau
- Institut des Sciences Chimiques de Rennes UMR 6226, Institut de Physique de Rennes, UMR 6251 CNRS Université de Rennes 1 Campus de Beaulieu 35042 Rennes Cedex France
| | - Francesco Zinna
- Dipartimento di Chimica e Chimica Industriale University of Pisa via Moruzzi 13 56124 Pisa Italy
- Present address: Université de Genève Département de Chimie Organique Quai Ernest-Ansermet 30 1211 Genève 4 Switzerland
| | - Elsa Caytan
- Institut des Sciences Chimiques de Rennes UMR 6226, Institut de Physique de Rennes, UMR 6251 CNRS Université de Rennes 1 Campus de Beaulieu 35042 Rennes Cedex France
| | - Loïc Toupet
- Institut des Sciences Chimiques de Rennes UMR 6226, Institut de Physique de Rennes, UMR 6251 CNRS Université de Rennes 1 Campus de Beaulieu 35042 Rennes Cedex France
| | - Vincent Dorcet
- Institut des Sciences Chimiques de Rennes UMR 6226, Institut de Physique de Rennes, UMR 6251 CNRS Université de Rennes 1 Campus de Beaulieu 35042 Rennes Cedex France
| | - Marion Jean
- Aix Marseille University, CNRS, Centrale Marseille, iSm2 Marseille France
| | - Nicolas Vanthuyne
- Aix Marseille University, CNRS, Centrale Marseille, iSm2 Marseille France
| | | | - Lorenzo Di Bari
- Dipartimento di Chimica e Chimica Industriale University of Pisa via Moruzzi 13 56124 Pisa Italy
| | - Jochen Autschbach
- Department of Chemistry University at Buffalo, State University of New York Buffalo NY 14260 USA
| | - Jeanne Crassous
- Institut des Sciences Chimiques de Rennes UMR 6226, Institut de Physique de Rennes, UMR 6251 CNRS Université de Rennes 1 Campus de Beaulieu 35042 Rennes Cedex France
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44
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Takimoto K, Watanabe Y, Mori S, Sato H. Vibrational circular dichroism and single crystal X-Ray diffraction analyses of [Ir(bzq)2(phen)]+ (bzq = benzo[h]quinoline; phen = 1,10-phenanthroline): absolute configuration and role of CH–π interaction in molecular packing. Dalton Trans 2017; 46:4397-4402. [DOI: 10.1039/c7dt00606c] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The absolute configuration of a cationic iridium(iii) complex was determined in solution and solid by vibrational circular dichroism and X-ray diffraction analyses.
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Affiliation(s)
- Kazuyoshi Takimoto
- Department of Chemistry
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Yutaka Watanabe
- Department of Chemistry
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Shigeki Mori
- Advanced Research Support Center
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Hisako Sato
- Department of Chemistry
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
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45
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Sato H, Tamura K, Yajima T, Sato F, Yamagishi A. Chiral phosphorescent probes for amino acids: hybrids of iridium(iii) complexes with synthetic saponite. NEW J CHEM 2017. [DOI: 10.1039/c6nj03777a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The effects of amino acids on the emission of iridium(iii) complexes adsorbed by colloidal particles of synthetic saponite lead to the conclusion that the interplay between two intramolecular chiral centers achieved enantioselectivity.
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Affiliation(s)
- Hisako Sato
- Department of Chemistry
- Graduate School of Science and Engineering
- Ehime University
- Matsuyama 790-8577
- Japan
| | - Kenji Tamura
- National Institute for Materials Science
- Tsukuba 305-0044
- Japan
| | - Tomoko Yajima
- Department of Chemistry
- Ochanomizu University
- Tokyo 112-8610
- Japan
| | - Fumi Sato
- School of Medicine
- Toho University
- Tokyo 143-8540
- Japan
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46
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Wang X, Tang Z. Circular Dichroism Studies on Plasmonic Nanostructures. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1601115. [PMID: 27273904 DOI: 10.1002/smll.201601115] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Revised: 04/22/2016] [Indexed: 06/06/2023]
Abstract
In recent years, optical chirality of plasmonic nanostructures has aroused great interest because of innovative fundamental understanding as well as promising potential applications in optics, catalysis and sensing. Herein, state-of-the-art studies on circular dichroism (CD) characteristics of plasmonic nanostructures are summarized. The hybrid of achiral plasmonic nanoparticles (NPs) and chiral molecules is explored to generate a new CD response at the plasmon resonance as well as the enhanced CD intensity of chiral molecules in the UV region, owing to the Coulomb static and dynamic dipole interactions between plasmonic NPs and chiral molecules. As for chiral assembly of plasmonic NPs, plasmon-plasmon interactions between the building blocks are found to induce generation of intense CD response at the plasmon resonance. Three-dimensional periodical arrangement of plasmonic NPs into macroscale chiral metamaterials is further introduced from the perspective of negative refraction and photonic bandgap. A strong CD signal is also discerned in achiral planar plasmonic nanostructures under illumination of circular polarized plane wave at oblique incidence or input vortex beam at normal incidence. Finally perspectives, especially on future investigation of time-resolved CD responses, are presented.
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Affiliation(s)
- Xiaoli Wang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P.R. China
| | - Zhiyong Tang
- CAS Key Laboratory of Nanosystem and Hierarchical Fabrication, National Center for Nanoscience and Technology, Beijing, 100190, P.R. China
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47
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Wang Y, Harada T, Shiota Y, Yoshizawa K, Wang H, Wang S, Ye X, Ogasawara M, Nakano T. Isolation and phototransformation of enantiomerically pure iridium( iii) bis[(4,6-difluorophenyl)pyridinato-N,C 2]picolinate. RSC Adv 2017. [DOI: 10.1039/c7ra04141a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Here we report the resolution of phosphorescent light-emitting iridium(iii) bis[(4,6-difluorophenyl)pyridinato-N,C2]-picolinate into its respective enantiomers by using chiral HPLC and the photo-induced transformation of the isolated enantiomers.
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Affiliation(s)
- Yue Wang
- Institute for Catalysis (ICAT)
- Graduate School of Chemical Sciences and Engineering
- Hokkaido University
- Sapporo 001-0021
- Japan
| | - Takunori Harada
- Department of Applied Chemistry
- Faculty of Engineering
- Oita University
- Oita
- Japan
| | - Yoshihito Shiota
- Institute for Materials Chemistry and Engineering
- Kyushu University
- Fukuoka 819-0395
- Japan
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering
- Kyushu University
- Fukuoka 819-0395
- Japan
| | - Heng Wang
- Institute for Catalysis (ICAT)
- Graduate School of Chemical Sciences and Engineering
- Hokkaido University
- Sapporo 001-0021
- Japan
| | - Sheng Wang
- Institute for Catalysis (ICAT)
- Graduate School of Chemical Sciences and Engineering
- Hokkaido University
- Sapporo 001-0021
- Japan
| | - Xichong Ye
- Institute for Catalysis (ICAT)
- Graduate School of Chemical Sciences and Engineering
- Hokkaido University
- Sapporo 001-0021
- Japan
| | - Masamichi Ogasawara
- Graduate School of Science and Technology
- Tokushima University
- Tokushima 770-8506
- Japan
| | - Tamaki Nakano
- Institute for Catalysis (ICAT)
- Graduate School of Chemical Sciences and Engineering
- Hokkaido University
- Sapporo 001-0021
- Japan
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48
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Martir DR, Momblona C, Pertegás A, Cordes DB, Slawin AMZ, Bolink HJ, Zysman-Colman E. Chiral Iridium(III) Complexes in Light-Emitting Electrochemical Cells: Exploring the Impact of Stereochemistry on the Photophysical Properties and Device Performances. ACS APPLIED MATERIALS & INTERFACES 2016; 8:33907-33915. [PMID: 27960443 DOI: 10.1021/acsami.6b14050] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Despite hundreds of cationic bis-cyclometalated iridium(III) complexes having been explored as emitters for light-emitting electrochemical cells (LEECs), uniformly their composition has been in the form of a racemic mixture of Λ and Δ enantiomers. The investigation of LEECs using enantiopure iridium(III) emitters, however, remains unprecedented. Herein, we report the preparation, the crystal structures, and the optoelectronic properties of two families of cyclometalated iridium(III) complexes of the form of [(C^N)2Ir(dtBubpy)]PF6 (where dtBubpy is 4,4'-di-tert-butyl-2,2'-bipyridine) in both their racemic and enantiopure configurations. LEEC devices using Λ and Δ enantiomers as well as the racemic mixture of both families have been prepared, and the device performances were tested. Importantly, different solid-state photophysical properties exist between enantiopure and racemic emitters, which are also reflected in the device performances.
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Affiliation(s)
- Diego Rota Martir
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews , St Andrews, Fife KY16 9ST, United Kingdom
| | - Cristina Momblona
- Instituto de Ciencia Molecular, Universidad de Valencia , c/Catedrático J. Beltrán, 2, Paterna 46980, Spain
| | - Antonio Pertegás
- Instituto de Ciencia Molecular, Universidad de Valencia , c/Catedrático J. Beltrán, 2, Paterna 46980, Spain
| | - David B Cordes
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews , St Andrews, Fife KY16 9ST, United Kingdom
| | - Alexandra M Z Slawin
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews , St Andrews, Fife KY16 9ST, United Kingdom
| | - Henk J Bolink
- Instituto de Ciencia Molecular, Universidad de Valencia , c/Catedrático J. Beltrán, 2, Paterna 46980, Spain
| | - Eli Zysman-Colman
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St Andrews , St Andrews, Fife KY16 9ST, United Kingdom
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49
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Kim HE, Seo NH, Hyun MH. Enantiomeric Separations of Iridium (III) Complexes Using HPLC Chiral Stationary Phases Based on Amylose Derivatives. B KOREAN CHEM SOC 2016. [DOI: 10.1002/bkcs.11029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Hee Eun Kim
- Department of Chemistry and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241 Republic of Korea
| | - Na Hyeon Seo
- Department of Chemistry and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241 Republic of Korea
| | - Myung Ho Hyun
- Department of Chemistry and Chemistry Institute for Functional Materials; Pusan National University; Busan 46241 Republic of Korea
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50
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Citti C, Battisti UM, Ciccarella G, Maiorano V, Gigli G, Abbate S, Mazzeo G, Castiglioni E, Longhi G, Cannazza G. Analytical and preparative enantioseparation and main chiroptical properties of Iridium(III) bis(4,6-difluorophenylpyridinato)picolinato. J Chromatogr A 2016; 1467:335-346. [DOI: 10.1016/j.chroma.2016.05.059] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2016] [Revised: 05/09/2016] [Accepted: 05/17/2016] [Indexed: 12/17/2022]
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