1
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Yang F, Li H, Li H, He X. Manipulation of 1D and 2D self-assembly via geometry modulation of adamantane isocyanide Pt(II) complexes. Chem Commun (Camb) 2024; 60:8605-8608. [PMID: 39045850 DOI: 10.1039/d4cc02400a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/25/2024]
Abstract
Two cationic luminescent cyclometalated Pt(II) complexes with adamantane-based isocyanide ligands are reported. This work provides important insights for the manipulation of the 1D and 2D self-assembly of Pt(II) complexes by controlling the geometry.
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Affiliation(s)
- Fang Yang
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China.
| | - Heyang Li
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China.
| | - Huijie Li
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China.
| | - Xiaoming He
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710119, P. R. China.
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2
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Benda L, Miton L, Hadj Seyd N, Chamoreau LM, Jonusauskas G, McClenaghan ND, Hasenknopf B, Marvaud V, Vives G. Cyclometalated luminescent platinum(II) complexes of dissymmetrical 2,2':4',2''-terpyridine and its self-assembled dimer presenting Pt-Ag dative bonds. Dalton Trans 2024; 53:12477-12485. [PMID: 38894665 DOI: 10.1039/d4dt01153h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/21/2024]
Abstract
A series of cyclometalated (N^C^N) Pt(II)-platinum complexes featuring a terpyridine ligand with a non-coordinating nitrogen atom and a Pt-C bond was synthesized. In the presence of Ag+, the bis(isonitrile)Pt(II) complex formed a remarkable self-assembled helicoidal dimer stabilized by coordination of Ag(I) and metallophilic Pt-Ag interactions. Its assembly was observed in the solid state and maintained in solution. All complexes show strong luminescence and multiple emitting states, which could be rationalized based on solid state X-ray structures and coordinating environment.
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Affiliation(s)
- Lorien Benda
- Sorbonne Université, UMR CNRS 8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005, Paris, France.
| | - Louise Miton
- Sorbonne Université, UMR CNRS 8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005, Paris, France.
| | - Nihal Hadj Seyd
- Sorbonne Université, UMR CNRS 8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005, Paris, France.
| | - Lise-Marie Chamoreau
- Sorbonne Université, UMR CNRS 8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005, Paris, France.
| | | | | | - Bernold Hasenknopf
- Sorbonne Université, UMR CNRS 8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005, Paris, France.
| | - Valérie Marvaud
- Sorbonne Université, UMR CNRS 8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005, Paris, France.
| | - Guillaume Vives
- Sorbonne Université, UMR CNRS 8232, Institut Parisien de Chimie Moléculaire, 4 place Jussieu, 75005, Paris, France.
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3
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Han T, Ren J, Jiang S, Wang F, Tian Y. Achieving Circularly Polarized Phosphorescence through Noncovalent Clipping of Metallotweezers. Inorg Chem 2024; 63:11523-11530. [PMID: 38860921 DOI: 10.1021/acs.inorgchem.3c04269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/12/2024]
Abstract
Circularly polarized phosphorescent materials, based on host-guest complexation, have received significant attention due to their outstanding emission performance in solutions. Recent studies have primarily focused on macrocyclic host-guest complexes. To broaden the scope of this research, there is a keen pursuit of developing novel chiral phosphorescent host-guest systems. Metallotweezers with square-planar d8 transition metal complexes emerge as promising candidates for achieving this objective. Specifically, metallotweezers, comprising platinum(II) terpyridine and gold(III) diphenylpyridine pincers on a diphenylpyridine scaffold, have been designed and synthesized. Due to the preorganization effect rendered by the diphenylpyridine scaffold, the resulting metallotweezers are capable of complexing with each other and forming quadruple stacking structures. The phosphorescent emission is enhanced owing to the synergistic rigidifying and shielding effects. Meanwhile, the steric effect of chiral (1R) pinene units on the platinum(II) terpyridine pincers results in a stereospecific twist for the quadruple stacking structures. Thus, the chirality transfers from the molecular to the supramolecular level. By a combination of phosphorescent enhancement and supramolecular chirality for the clipping complex, circularly polarized phosphorescent emission is achieved. Overall, noncovalent clipping of metallotweezers exemplified in the current study presents a novel and effective approach toward solution-processable circularly polarized phosphorescent materials.
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Affiliation(s)
- Tingting Han
- Key Laboratory of Environment-Friendly Polymeric Materials of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, China
| | - Jie Ren
- Key Laboratory of Environment-Friendly Polymeric Materials of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, China
| | - Sixun Jiang
- Key Laboratory of Precision and Intelligent Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Feng Wang
- Key Laboratory of Precision and Intelligent Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Yukui Tian
- Key Laboratory of Environment-Friendly Polymeric Materials of Anhui Province, Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, China
- School of Materials Science and Engineering, Anhui University, Hefei 230601, China
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4
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Tauchi D, Kanno K, Hasegawa M, Mazaki Y, Tsubaki K, Sugiura KI, Shiga T, Mori S, Nishikawa H. Aggregation-induced enhanced fluorescence emission of chiral Zn(II) complexes coordinated by Schiff-base type binaphthyl ligands. Dalton Trans 2024; 53:8926-8933. [PMID: 38687172 DOI: 10.1039/d4dt00903g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
A pair of novel chiral Zn(II) complexes coordinated by Schiff-base type ligands derived from BINOL (1,1'-bi-2-naphthol), R-/S-Zn, were synthesized. X-ray crystallography revealed the presence of two crystallographically independent complexes; one has a distorted trigonal-bipyramidal structure coordinated by two binaphthyl ligands and one disordered methanol molecule (molecule A), while the other has a distorted tetrahedral structure coordinated by two binaphthyl ligands (molecule B). Numerous CH⋯π and CH⋯O interactions were identified, contributing to the formation of a 3-dimensional rigid network structure. Both R-/S-Zn exhibited fluorescence in both CH2Cl2 solutions and powder samples, with the photoluminescence quantum yields (PLQYs) of powder samples being twice as large as those in solutions, indicating aggregation-induced enhanced emission (AIEE). The AIEE properties were attributed to the restraint of the molecular motion arising from the 3-dimensional intermolecular interactions. CD and CPL spectra were observed for R-/S-Zn in both solutions and powders. The dissymmetry factors, gabs and gCPL values, were within the order of 10-3 to 10-4 magnitudes, comparable to those reported for chiral Zn(II) complexes in previous studies.
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Affiliation(s)
- Daiki Tauchi
- Graduate School of Science and Engineering, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan.
| | - Katsuya Kanno
- Graduate School of Science and Engineering, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan.
| | - Masashi Hasegawa
- Graduate School of Science, Kitasato University, Kanagawa 252-0373, Japan
| | - Yasuhiro Mazaki
- Graduate School of Science, Kitasato University, Kanagawa 252-0373, Japan
| | - Kazunori Tsubaki
- Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Kyoto 606-8522, Japan
| | - Ken-Ichi Sugiura
- Graduate School of Science, Tokyo Metropolitan University, Tokyo, 192-0397, Japan
| | - Takuya Shiga
- Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8577, Japan
| | - Seiji Mori
- Graduate School of Science and Engineering, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan.
| | - Hiroyuki Nishikawa
- Graduate School of Science and Engineering, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan.
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5
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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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Khistiaeva VV, Buss S, Eskelinen T, Hirva P, Kinnunen N, Friedel J, Kletsch L, Klein A, Strassert CA, Koshevoy IO. Cyanido-bridged diplatinum(ii) complexes: ligand and solvent effect on aggregation and luminescence. Chem Sci 2024; 15:4005-4018. [PMID: 38487239 PMCID: PMC10935663 DOI: 10.1039/d3sc06941a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2023] [Accepted: 01/23/2024] [Indexed: 03/17/2024] Open
Abstract
The association of platinum(ii)-based luminophores, which is caused by metal⋯metal and π-π stacking interactions, has been actively exploited in supramolecular construction of photofunctional molecular materials. Herein, we describe a series of bimetallic complexes [{Pt(C^N^/*N)}2(CN)][BAr4F], containing cyanido-bridged cyclometalated Pt(ii) chromophore fragments (HC^N^N = 6-phenyl-2,2'-bipyridine, (benzyltriazolyl)-phenylpyridine, and pyrazolyl-phenylpyridine; HC^N*N = N-pentyl-6-phenyl-N-(pyridin-2-yl)pyridin-2-amine; ^/* denote five/six-membered metallocycles). These compounds are intensely phosphorescent at room temperature showing quantum yields up to 0.73 in solution and 0.62 in the solid state, which are generally higher than those of the mononuclear relatives [Pt(C^N^/*N)(CN)]. The complex cations bearing sterically unhindered -C^N^N ligands readily assemble in solution, reaching the tetrameric species [{Pt(C^N^N)}2(CN)]44+ as suggested by diffusion NMR spectroscopy. The size of the aggregates can be regulated by the concentration, temperature, and polarity of the solvent that allows to alter the emission from green to near-IR. In the solid state, the maximum of low-energy luminescence is shifted up to 912 nm. The results show that photophysical properties of discrete complexes and the intermolecular aggregation can be substantially enhanced by utilizing the rigid bimetallic units giving rise to novel dynamic light emitting Pt(ii) systems.
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Affiliation(s)
- Viktoria V Khistiaeva
- Department of Chemistry, University of Eastern Finland P.O. Box 111 FI-80100 Joensuu Finland
| | - Stefan Buss
- Institut für Anorganische und Analytische Chemie, Universität Münster, CiMIC, CeNTech Heisenbergstraße 11 48149 Münster Germany
| | - Toni Eskelinen
- Department of Chemistry, University of Eastern Finland P.O. Box 111 FI-80100 Joensuu Finland
- Department of Chemistry and Materials Science, Aalto University FI-00076 Aalto Finland
| | - Pipsa Hirva
- Department of Chemistry, University of Eastern Finland P.O. Box 111 FI-80100 Joensuu Finland
| | - Niko Kinnunen
- Department of Chemistry, University of Eastern Finland P.O. Box 111 FI-80100 Joensuu Finland
| | - Joshua Friedel
- Faculty of Mathematics and Natural Sciences, Department of Chemistry and Biochemistry, Institute for Inorganic Chemistry, University of Cologne Greinstrasse 6 D-50939 Cologne Germany
| | - Lukas Kletsch
- Faculty of Mathematics and Natural Sciences, Department of Chemistry and Biochemistry, Institute for Inorganic Chemistry, University of Cologne Greinstrasse 6 D-50939 Cologne Germany
| | - Axel Klein
- Faculty of Mathematics and Natural Sciences, Department of Chemistry and Biochemistry, Institute for Inorganic Chemistry, University of Cologne Greinstrasse 6 D-50939 Cologne Germany
| | - Cristian A Strassert
- Institut für Anorganische und Analytische Chemie, Universität Münster, CiMIC, CeNTech Heisenbergstraße 11 48149 Münster Germany
| | - Igor O Koshevoy
- Department of Chemistry, University of Eastern Finland P.O. Box 111 FI-80100 Joensuu Finland
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Morimoto T, Yoshida M, Sato-Tomita A, Nozawa S, Takayama J, Hiura S, Murayama A, Kobayashi A, Kato M. Vapor-Induced Assembly of a Platinum(II) Complex Loaded on Layered Double Hydroxide Nanoparticles. Chemistry 2023; 29:e202301993. [PMID: 37581259 DOI: 10.1002/chem.202301993] [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: 06/22/2023] [Revised: 08/12/2023] [Accepted: 08/14/2023] [Indexed: 08/16/2023]
Abstract
Controlled self-assembly of PtII complexes is key to the development of optical and stimuli-responsive materials, but designing and precisely controlling them is still difficult owing to weak intermolecular interactions. Herein, we report the successful water-vapor-induced assembly of an anionic PtII complex [Pt(CN)2 (ppy)]- (Hppy=2-phenylpyridine) electrostatically loaded onto cationically charged layered double hydroxide (LDH) nanoparticles consisting of Mg2+ and Al3+ ions. When the PtII complexes were densely loaded onto the LDH nanoparticles, the assembly was maintained, even in dilute aqueous media. In the case of sparse loading, the PtII complexes were loaded discretely in the dry state; however, when water vapor was adsorbed, the increased mobility of the PtII complexes led to their assembly on the LDH nanoparticles. The presence of water vapor led to a drastic change in luminescence from green to orange.
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Affiliation(s)
- Tamami Morimoto
- Department of Chemistry, Faculty of Science, Hokkaido University, North-10 West-8, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan
| | - Masaki Yoshida
- Department of Applied Chemistry for Environment, School of Biological and Environmental Sciences, Kwansei Gakuin University, 1 Gakuen-Uegahara, Sanda, Hyogo, 669-1330, Japan
| | - Ayana Sato-Tomita
- Division of Biophysics, Department of Physiology, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan
| | - Shunsuke Nozawa
- Institute of Materials Structure Science, High Energy Accelerator Research Organization (KEK), 1-1 Oho, Tsukuba, Ibaraki, 305-0801, Japan
| | - Junichi Takayama
- Faculty of Information Science and Technology, Hokkaido University, North-14 West-9, Kita-ku, Sapporo, Hokkaido, 060-0814, Japan
| | - Satoshi Hiura
- Faculty of Information Science and Technology, Hokkaido University, North-14 West-9, Kita-ku, Sapporo, Hokkaido, 060-0814, Japan
| | - Akihiro Murayama
- Faculty of Information Science and Technology, Hokkaido University, North-14 West-9, Kita-ku, Sapporo, Hokkaido, 060-0814, Japan
| | - Atsushi Kobayashi
- Department of Chemistry, Faculty of Science, Hokkaido University, North-10 West-8, Kita-ku, Sapporo, Hokkaido, 060-0810, Japan
| | - Masako Kato
- Department of Applied Chemistry for Environment, School of Biological and Environmental Sciences, Kwansei Gakuin University, 1 Gakuen-Uegahara, Sanda, Hyogo, 669-1330, Japan
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8
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Park G, Jeong DY, Yu SY, Park JJ, Kim JH, Yang H, You Y. Enhancing Circularly Polarized Phosphorescence via Integrated Top-Down and Bottom-Up Approach. Angew Chem Int Ed Engl 2023; 62:e202309762. [PMID: 37606233 DOI: 10.1002/anie.202309762] [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: 07/10/2023] [Revised: 08/11/2023] [Accepted: 08/22/2023] [Indexed: 08/23/2023]
Abstract
In the dynamic domain of chiroptical technologies, it is imperative to engineer emitters endowed with circularly polarized luminescence (CPL) properties. This research demonstrates an advancement by employing a combined top-down and bottom-up strategy for the simultaneous amplification of photoluminescence quantum yield (Φ) and the luminescence dissymmetry factor (glum ). Square-planar Pt(II) complexes form helical assemblies, driven by torsional strain induced by bis(nonyl) chains. Integration of chiral anions leads these assemblies to prefer distinct helical sense. This arrangement activates the metal-metal-to-ligand charge transfer (MMLCT) transition that is CPL-active, with Φ and |glum | observing an upswing contingent on the charge number and aryl substituents in chiral anions. Utilizing the soft-lithographic micromolding in capillaries technique, we could fabricate exquisitely-ordered, one-dimensional co-assemblies to achieve the metrics to Φ of 0.32 and |glum | of 0.13. Finally, our spectroscopic research elucidates the underlying mechanism for the dual amplification, making a significant stride in the advancement of CPL-active emitters.
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Affiliation(s)
- Gyurim Park
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, 03722, Republic of Korea
| | - Dong Yeon Jeong
- Division of Chemical Engineering and Materials Science, Ewha Womans University, Seoul, 03760, Republic of Korea
| | - Seung Yeon Yu
- Division of Chemical Engineering and Materials Science, Ewha Womans University, Seoul, 03760, Republic of Korea
| | - Jong Jin Park
- Department of Molecular Science and Technology, Ajou University, Suwon, 16499, Republic of Korea
| | - Jong H Kim
- Department of Molecular Science and Technology, Ajou University, Suwon, 16499, Republic of Korea
| | - Hoichang Yang
- Department of Chemical Engineering, Inha University, Incheon, 22212, Republic of Korea
| | - Youngmin You
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul, 03722, Republic of Korea
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Jing J, Yu M, Pan L, Zhao Y, Xu G, Zhang HH, Li C, Zhang XP. Synthesis and Biological Activities of Luminescent 5,6-Membered Bis(Metallacyclic) Platinum(II) Complexes. Molecules 2023; 28:6369. [PMID: 37687198 PMCID: PMC10489632 DOI: 10.3390/molecules28176369] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Revised: 08/25/2023] [Accepted: 08/29/2023] [Indexed: 09/10/2023] Open
Abstract
Four couples of 5,6-membered bis(metallacyclic) Pt(II) complexes with acetylide and isocyanide auxiliary ligands have been prepared and characterized. The structures of (-)-2 and (-)-3 are confirmed by single-crystal X-ray diffraction, showing a distorted square-planar coordination environment around the Pt(II) nucleus. Both solutions and solid samples of all complexes are emissive at RT. Acetylide-coordinated Pt(II) complexes have a lower energy emission than those isocyanide-coordinated ones. The emission spectra of N^N'*C-coordinated Pt(II) derivatives show a lower energy emission maximum relative to N^C*N'-coordinated complexes with the same auxiliary ligand. Moreover, the difference between cyclometalated N^N'*C and N^C*N' ligands exerts a more remarkable effect on the emission than the auxiliary ligands acetylide and isocyanide. Cytotoxicity and cell imaging of luminescent 5,6-membered bis(metallacyclic) Pt(II) complexes have been evaluated.
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Affiliation(s)
| | | | | | | | | | | | | | - Xiao-Peng Zhang
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou 571158, China; (J.J.); (M.Y.); (L.P.); (Y.Z.); (G.X.); (H.-H.Z.); (C.L.)
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10
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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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11
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Martínez-Junquera M, Lalinde E, Moreno MT. cis/ trans-[Pt(C ∧N)(C≡CR)(CNBu t)] Isomers: Synthesis, Photophysical, DFT Studies, and Chemosensory Behavior. Inorg Chem 2023; 62:11849-11868. [PMID: 37458185 PMCID: PMC10394665 DOI: 10.1021/acs.inorgchem.3c01196] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/01/2023]
Abstract
cis/trans Isomerism can be a crucial factor for photophysical properties. Here, we report the synthesis and optical properties of a series of trans- and cis-alkynyl/isocyanide cycloplatinated compounds [Pt(C∧N)(C≡CR)(CNBut)] [R = C6H4-4-OMe 1, 3-C4H3S 2; C∧N = 2-(2,4-difluorophenyl)pyridine (dfppy) (a), 4-(2-pyridyl)benzaldehyde (ppy-CHO) (b)]. The trans-forms do not isomerize thermally in MeCN solution to the cis forms, but upon photochemical irradiation in this medium at 298 K, a variable isomerization to the cis forms was observed. This behavior is in good agreement with the theoretically calculated energy values. The trans/cis configuration, the identity of the cyclometalated, and the alkynyl ligand influence on the absorption and emission properties of the complexes in solution, polystyrene (PS) films, and solid state are reported. All complexes are efficient triplet emitters in all media (except for trans-1a and trans-2a in CH2Cl2 solution at 298 K), with emission wavelengths depending mainly on the cyclometalated ligand in the region 473-490 nm (dfppy), 510-550 (ppy-CHO), and quantum yields (ϕ) ranging from 18.5 to 40.7% in PS films. The combined photophysical data and time-dependent density functional theory calculations (TD-DFT) at the excited-state T1 geometry reveal triplet excited states of 3L'LCT (C≡CR → C∧N)/3IL (C∧N) character with minor 3MLCT contribution. The dfppy (a) complexes show a greater tendency to aggregate in rigid media than the ppy-CHO (b) and the cis with respect to the trans, showing red-shifted structureless bands of 3MMLCT and/or excimer-like nature. Interestingly, trans-1a,2a and cis-1a,2a undergo significant changes in the ultraviolet (UV) and emission spectra with Hg2+ ions enabling their use for sensing of Hg2+ ions in solution. This is clearly shown by the hypsochromic shift and substantial decrease of the low-energy absorption band and an increase of the intensity of the emission in the MeCN solution upon the addition of a solution of Hg(ClO4)2 (1:5 molar ratio). Job's plot analysis estimated a 1:1 stoichiometry in the complexation mode of Hg2+ by trans-2a. The binding constant (log K) calculated for this system from absorption titration data resulted to be 2.56, and the limit of the detection (LOD) was 6.54 × 10-7 M.
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Affiliation(s)
- Mónica Martínez-Junquera
- Departamento de Química-Centro de Síntesis Química de La Rioja, (CISQ), Universidad de La Rioja, 26006 Logroño, Spain
| | - Elena Lalinde
- Departamento de Química-Centro de Síntesis Química de La Rioja, (CISQ), Universidad de La Rioja, 26006 Logroño, Spain
| | - M Teresa Moreno
- Departamento de Química-Centro de Síntesis Química de La Rioja, (CISQ), Universidad de La Rioja, 26006 Logroño, Spain
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12
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Tauchi D, Koida T, Nojima Y, Hasegawa M, Mazaki Y, Inagaki A, Sugiura KI, Nagaya Y, Tsubaki K, Shiga T, Nagata Y, Nishikawa H. Aggregation-induced circularly polarized phosphorescence of Pt(II) complexes with an axially chiral BINOL ligand. Chem Commun (Camb) 2023; 59:4004-4007. [PMID: 36917013 DOI: 10.1039/d2cc06198h] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
A pair of chiral Pt(II) complexes coordinated by simple BINOL and bipyridine ligands displaying aggregation-induced phosphorescence and circularly polarized luminescence were characterized by X-ray crystallography and absorption and emission spectroscopies. The emission of the powder sample was reddish whereas the thin film dispersed in PMMA (fPf = 1 wt%) exhibited a white emission.
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Affiliation(s)
- Daiki Tauchi
- Graduate School of Science and Engineering, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan.
| | - Taiki Koida
- Graduate School of Science and Engineering, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan.
| | - Yuki Nojima
- Graduate School of Science, Kitasato University, Kanagawa 252-0373, Japan
| | - Masahi Hasegawa
- Graduate School of Science, Kitasato University, Kanagawa 252-0373, Japan
| | - Yasuhiro Mazaki
- Graduate School of Science, Kitasato University, Kanagawa 252-0373, Japan
| | - Akiko Inagaki
- Faculty of Science and Technology, Seikei University, Tokyo, 180-8633, Japan
| | - Ken-Ichi Sugiura
- Graduate School of Science, Tokyo Metropolitan University, Tokyo, 192-0397, Japan
| | - Yuki Nagaya
- Graduate School of Life and Environmental Science, Kyoto Prefectural University, Kyoto 606-8522, Japan
| | - Kazunori Tsubaki
- Graduate School of Life and Environmental Science, Kyoto Prefectural University, Kyoto 606-8522, Japan
| | - Takuya Shiga
- Faculty of Pure and Applied Sciences, University of Tsukuba, Tsukuba 305-8577, Japan
| | - Yuuya Nagata
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD), Hokkaido University, Sapporo, Hokkaido 001-0021, Japan
| | - Hiroyuki Nishikawa
- Graduate School of Science and Engineering, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan.
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13
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Ren J, Jiang S, Han T, Wu S, Tian Y, Wang F. Dual supramolecular chirogenesis based on platinum(II) metallotweezers. Chem Commun (Camb) 2023; 59:744-747. [PMID: 36541365 DOI: 10.1039/d2cc05787e] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Optically active platinum(II) metallotweezers demonstrate both self-complexation and host-guest complexation capabilities, leading to two distinct supramolecular chirogenic signals in the visible region.
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Affiliation(s)
- Jie Ren
- Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui, 230601, China.
| | - Sixun Jiang
- Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China.
| | - Tingting Han
- Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui, 230601, China.
| | - Shuai Wu
- Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui, 230601, China.
| | - Yukui Tian
- Institutes of Physical Science and Information Technology, Anhui University, Hefei, Anhui, 230601, China. .,School of Materials Science and Engineering, Anhui University, Hefei, 230601, China
| | - Feng Wang
- Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, China.
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14
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Maeda T, Mori T, Ikeshita M, Ma SC, Muller G, Ariga K, Naota T. Vortex Flow-controlled Circularly Polarized Luminescence of Achiral Pt(II) Complex Aggregates Assembled at the Air-Water Interface. SMALL METHODS 2022; 6:e2200936. [PMID: 36287093 DOI: 10.1002/smtd.202200936] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 09/20/2022] [Indexed: 05/27/2023]
Abstract
Circularly polarized luminescence (CPL) has been researched for various applications by control of characteristics such as chirality and magnitude. Supramolecular chirality has been prepared by vortex motion as a mechanical stimulus; however, CPL has yet to be controlled precisely and reproducibly. In this work, the first precise control of CPL under vortex flow conditions at an air-water interface is reported. The supramolecular chirality of aggregates consisting of an achiral trans-bis(salicylaldiminato)Pt(II) complex bearing hexadecyl chains is induced and controlled with vortex flow at the air-water interface, whereas the complex naturally forms an achiral amorphous solid with non-chiroptical properties under non-vortex conditions. The CPL direction and magnitude (glum value) of the Pt(II) complex aggregates can be adjusted precisely according to the vortex conditions, including the rotatory direction and flow rate. Vortex-flow-induced emission enhancement is also observed upon an increase in the rate of the vortex flow.
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Affiliation(s)
- Takatoshi Maeda
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, 560-8531, Japan
| | - Taizo Mori
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki, 305-0044, Japan
- Department of Advanced Materials Science, Graduate School of Frontier Science, The University of Tokyo, Kashiwa, Chiba, 277-8561, Japan
- Institute for Solid State Physics, The University of Tokyo, Kashiwa, Chiba, 277-8581, Japan
| | - Masahiro Ikeshita
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, 560-8531, Japan
| | - Shing Cho Ma
- Department of Chemistry, San José State University, San José, California, 95192-0101, USA
| | - Gilles Muller
- Department of Chemistry, San José State University, San José, California, 95192-0101, USA
| | - Katsuhiko Ariga
- International Center for Materials Nanoarchitectonics (WPI-MANA), National Institute for Materials Science (NIMS), Tsukuba, Ibaraki, 305-0044, Japan
- Department of Advanced Materials Science, Graduate School of Frontier Science, The University of Tokyo, Kashiwa, Chiba, 277-8561, Japan
| | - Takeshi Naota
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka, 560-8531, Japan
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15
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Zhang HH, Jing J, Xu G, Song YX, Wu SX, Chen XH, Zhang DS, Zhang XP, Shi ZF. Circularly polarized luminescence of pinene-modified tetradentate platinum(II) enantiomers containing fused 5/6/6 metallocycles. Heliyon 2022; 8:e11358. [PMID: 36387510 PMCID: PMC9649974 DOI: 10.1016/j.heliyon.2022.e11358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2022] [Revised: 10/12/2022] [Accepted: 10/27/2022] [Indexed: 11/06/2022] Open
Abstract
In this study, a couple of tetradentate Pt(II) enantiomers ((−)-1 and (+)-1) and a couple of tetradentate Pt(IV) enantiomers ((−)-2 and (+)-2) containing fused 5/6/6 metallocycles have been synthesized by controlling reaction conditions. Two valence forms could transform into each other through mild chemical oxidants and reductants. Single-crystal X-ray diffraction confirms the structures of (−)-1 and (−)-2. The coordination sphere of the Pt(II) cation in (−)-1 displays a distorted square-planar geometry and a platinum centroid helix chirality. In contrast, the structure of (−)-2 reveals a distorted octahedral geometry. The solution and the solid of (−)-1 are highly luminescent. Complex (−)-1 shows a prominent aggregation-induced emission enhancement (AIEE) behavior in DMSO/water solution with emission quantum yield (Φem) up to 73.2%. Furthermore, highly phosphorescent Pt(II) enantiomers exhibit significant circularly polarized luminescence (CPL) with a dissymmetry factor (glum) of order 10−3 in CH2Cl2 solutions at room temperature. Symmetrically appreciable CPL signals are observed for the enantiomers (−)-1 and (+)-1.
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16
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Jing J, Xu G, Zhang HH, Chen XH, Zhang DS, Han LZ, Qi XW, Shi ZF, Zhang XP. Enhanced circularly polarized luminescence in fluoro-substituted N^C^N-coordinating platinum(II) complexes. Inorganica Chim Acta 2022. [DOI: 10.1016/j.ica.2022.121067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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17
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Jia D, Zhong H, Jiang S, Yao R, Wang F. Simultaneous enhancement of phosphorescence and chirality by host–guest recognition of molecular tweezers. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.02.081] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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18
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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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19
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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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20
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Song J, Xiao H, Fang L, Qu L, Zhou X, Xu ZX, Yang C, Xiang H. Highly Phosphorescent Planar Chirality by Bridging Two Square-Planar Platinum(II) Complexes: Chirality Induction and Circularly Polarized Luminescence. J Am Chem Soc 2022; 144:2233-2244. [DOI: 10.1021/jacs.1c11699] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Jintong Song
- College of Chemistry, Sichuan University, Chengdu 610064, People’s Republic of China
| | - Hui Xiao
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518000, People’s Republic of China
| | - Lizhi Fang
- College of Chemistry, Sichuan University, Chengdu 610064, People’s Republic of China
| | - Lang Qu
- College of Chemistry, Sichuan University, Chengdu 610064, People’s Republic of China
| | - Xiangge Zhou
- College of Chemistry, Sichuan University, Chengdu 610064, People’s Republic of China
| | - Zong-Xiang Xu
- Department of Chemistry, Southern University of Science and Technology, Shenzhen 518000, People’s Republic of China
| | - Cheng Yang
- College of Chemistry, Sichuan University, Chengdu 610064, People’s Republic of China
| | - Haifeng Xiang
- College of Chemistry, Sichuan University, Chengdu 610064, People’s Republic of China
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21
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Takaishi K, Nakatsuka Y, Asano H, Yamada Y, Ema T. Ruthenium Complexes Bearing Axially Chiral Bipyridyls: The Mismatched Diastereomer Showed Red Circularly Polarized Phosphorescence. Chemistry 2021; 28:e202104212. [PMID: 34837262 DOI: 10.1002/chem.202104212] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Indexed: 12/21/2022]
Abstract
RutheniumII complexes bearing three axially chiral bipyridyl ligands were synthesized as a new family of chiral complex dyes, and Δ-(S)- and Λ-(S)-diastereomers were obtained. The X-ray crystal structure analyses, spectroscopy, and DFT calculations suggested that all the bipyridyls maintained chirality in both the ground and excited states, and the Δ-(S)- and Λ-(S)-isomers are the matched (more relaxed) and mismatched (more constrained) pairs, respectively. The mismatched Λ-(S)-isomer exhibited red circularly polarized phosphorescence (CPP) both in solution and in the solid state. The solution state CPP is the most intense of ruthenium complexes, while the solid state CPP is the first example of them. It is supposed that, for the Λ-(S)-isomer, the six cumulative CH/π interactions suppress further distortion in the T1 state.
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Affiliation(s)
- Kazuto Takaishi
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University Tsushima, Okayama, 700-8530, Japan
| | - Yusuke Nakatsuka
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University Tsushima, Okayama, 700-8530, Japan
| | - Hitomi Asano
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University Tsushima, Okayama, 700-8530, Japan
| | - Yuya Yamada
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University Tsushima, Okayama, 700-8530, Japan
| | - Tadashi Ema
- Division of Applied Chemistry, Graduate School of Natural Science and Technology, Okayama University Tsushima, Okayama, 700-8530, Japan
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22
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Basuyaux G, Amar A, Troufflard C, Boucekkine A, Métivier R, Raynal M, Moussa J, Bouteiller L, Amouri H. Cyclometallated Pt(II) Complexes Containing a Functionalized Bis‐Urea Alkynyl Ligand: Probing Aggregation Mediated by Hydrogen Bonds
versus
Pt⋅⋅⋅Pt and π−π Interactions. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Gaëtan Basuyaux
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire 4 place Jussieu 75005 Paris France
| | - Anissa Amar
- Laboratoire de Chimie et de Physique Quantiques Faculté des Sciences, U.M.M.T.O 15000 Tizi-Ouzou Algeria
| | - Claire Troufflard
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire 4 place Jussieu 75005 Paris France
| | - Abdou Boucekkine
- Univ. Rennes ISCR UMR 6226 CNRS Campus de Beaulieu 35042 Rennes Cedex France
| | - Rémi Métivier
- PPSM, ENS Paris-Saclay, CNRS Université Paris-Saclay 91190 Gif-sur-Yvette France
| | - Matthieu Raynal
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire 4 place Jussieu 75005 Paris France
| | - Jamal Moussa
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire 4 place Jussieu 75005 Paris France
| | - Laurent Bouteiller
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire 4 place Jussieu 75005 Paris France
| | - Hani Amouri
- Sorbonne Université CNRS Institut Parisien de Chimie Moléculaire 4 place Jussieu 75005 Paris France
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23
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Zhang HH, Yang QY, Qi XW, Sun SS, Li BS, Zhang DS, Zhang XP, Shi ZF. Improved mechanochromism and mechanoluminescence in fluoro-substituted N^N^C-coordinating cyclometalated platinum(II) complexes. Inorganica Chim Acta 2021. [DOI: 10.1016/j.ica.2021.120411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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24
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Braker EE, Mukthar NFM, Schley ND, Ung G. Substituent Effect on the Circularly Polarized Luminescence of
C
1
‐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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25
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Yang QY, Zhang HH, Qi XW, Sun SS, Zhang DS, Han LZ, Zhang XP, Shi ZF. Mechanochromic luminescence properties of fluoro-substituted pinene-containing cyclometalated platinum(II) complexes with multiple triplet excited states. Dalton Trans 2021; 50:8938-8946. [PMID: 34109961 DOI: 10.1039/d1dt00848j] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The structure-mechanochromism relationship is explored with respect to packing patterns and corresponding intermolecular interactions that are affected by the number and location of -F. The distinct and reversible mechanochormic luminescence (Δλem up to ca. 90 nm) of yellow solids (-)-1-Yg, (-)-2-Yg, and (-)-3-Yg was displayed with a simultaneous crystal-to-amorphous transformation. The change of multiple triplet excited states accounted for the mechanochormic luminescence, and a switch from the 3π,π* monomer to the excimer/3MMLCT occurred in the grinding process. The mechanical force led to perturbation in the molecular packing, and aggregates with effective PtPt and π-π interactions were formed in the amorphous phase, leading to the variation of excited states. The mechanochromic luminescence could be reverted by dropping in CH2Cl2 and could be cycled multiple times without perceivable performance degradation. This work gives a reference for designing mechanochromic luminescent materials toward multicolor and multicomponent responses.
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Affiliation(s)
- Qian-Ying Yang
- College of Chemistry and Chemical Engineering, Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, Hainan Normal University, Haikou 571158, P.R. China.
| | - Hua-Hong Zhang
- College of Chemistry and Chemical Engineering, Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, Hainan Normal University, Haikou 571158, P.R. China.
| | - Xiao-Wei Qi
- College of Chemistry and Chemical Engineering, Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, Hainan Normal University, Haikou 571158, P.R. China.
| | - Shi-Shu Sun
- College of Chemistry and Chemical Engineering, Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, Hainan Normal University, Haikou 571158, P.R. China.
| | - Da-Shuai Zhang
- College of Chemistry and Chemical Engineering, Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, Hainan Normal University, Haikou 571158, P.R. China.
| | - Li-Zhi Han
- College of Chemistry and Chemical Engineering, Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, Hainan Normal University, Haikou 571158, P.R. China.
| | - Xiao-Peng Zhang
- College of Chemistry and Chemical Engineering, Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, Hainan Normal University, Haikou 571158, P.R. China.
| | - Zai-Feng Shi
- College of Chemistry and Chemical Engineering, Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, Hainan Normal University, Haikou 571158, P.R. China.
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26
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Yoshida M, Hirao T, Haino T. Self-assembly of neutral platinum complexes possessing chiral hydrophilic TEG chains. Org Biomol Chem 2021; 19:5303-5311. [PMID: 33969859 DOI: 10.1039/d1ob00492a] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Neutral platinum complexes that possess chiral triethylene glycol (TEG) moieties were synthesized. The platinum complexes formed helically twisted stacked assemblies in chloroform and toluene, which were studied by 1H NMR, UV/vis spectroscopy, and emission spectroscopy. On the other hand, emissive micellar aggregates were observed in a THF/water mixed solvent. Dynamic light scattering (DLS) experiments revealed that micellar aggregates with a diameter (d) of ≈100 nm emitted strong light, whereas the monomeric form and large aggregates (d > 500 nm) did not show luminescence efficiently. Furthermore, the micellar aggregates were twisted chirally, where the twisted direction was determined by the chirality of the TEG moieties. The assemblies were observed to be solvent responsive, which allows for the modulation of the nanostructure by changing the solvent polarity.
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Affiliation(s)
- Masaya Yoshida
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan.
| | - Takehiro Hirao
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan.
| | - Takeharu Haino
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University, 1-3-1 Kagamiyama, Higashi-Hiroshima, Hiroshima 739-8526, Japan.
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27
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Eskelinen T, Buss S, Petrovskii SK, Grachova EV, Krause M, Kletsch L, Klein A, Strassert CA, Koshevoy IO, Hirva P. Photophysics and Excited State Dynamics of Cyclometalated [M(Phbpy)(CN)] (M = Ni, Pd, Pt) Complexes: A Theoretical and Experimental Study. Inorg Chem 2021; 60:8777-8789. [PMID: 34097403 DOI: 10.1021/acs.inorgchem.1c00680] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Cyclometalated complexes [M(Phbpy)(CN)] (HPhbpy = 6-phenyl-2,2'-bipyridine) of the group 10 metals (Ni, Pd, and Pt) bearing a carbanionic -C∧N∧N pincer ligand were synthesized and studied in a combined experimental and computational DFT approach. All three complexes were crystallographically characterized showing closely packed dimers with head-to-tail stacking and short metal-metal contacts in the solid state. The computational models for geometries, excited states, and electronic transitions addressed both monomeric (Ni-mono, Pd-mono, and Pt-mono) and dimeric (Ni-dim, Pd-dim, and Pt-dim) entities. Photophysical properties and excited state dynamics of all title complexes were investigated in solution and in the solid at 298 and 77 K. [Ni(Phbpy)(CN)] and [Pd(Phbpy)(CN)] are virtually nonemissive in solution at 298 K, whereas [Pt(Phbpy)(CN)] shows phosphorescence in CH2Cl2 (DCM) solution (λem = 562 nm) stemming from a mixed 3MLCT/ILCT (metal-to-ligand charge transfer/intraligand charge transfer) state. At 77 K in a glassy frozen DCM:MeOH matrix, [Pd(Phbpy)(CN)] shows a remarkable emission (λem = 571 nm) with a photoluminescence quantum yield reaching almost unity, whereas [Ni(Phbpy)(CN)] is again nonemissive. Calculations on the monomeric models M-mono show that low-lying metal-centered states (MC, i.e., d-d* configuration) with dissociative character quench the photoluminescence. In the solid state, the complexes [M(Phbpy)(CN)] show defined photoluminescence bands (λem = 561 nm for Pd and 701 nm for Pt). Calculations on the dimeric models M-dim shows that the axial M···M interactions alter the photophysical properties of Pd-dim and Pt-dim toward MMLCT (metal-metal-to-ligand charge transfer) excited states with Pd-dim showing temperature-dependent emission lifetimes, suggesting thermally activated delayed fluorescence, whereas Pt-dim displayed phosphorescence with excimeric character. The metal-metal interactions were analyzed in detail with the quantum theory of atoms in molecules approach.
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Affiliation(s)
- Toni Eskelinen
- Department of Chemistry, University of Eastern Finland, P.O. Box 111, FI-80100 Joensuu, Finland
| | - Stefan Buss
- CeNTech, CiMIC, SoN, Westfälische Wilhelms-Universität Münster, Heisenbergstr. 11, D-48149 Münster, Germany
| | - Stanislav K Petrovskii
- Department of Chemistry, St. Petersburg State University, Universitetskii pr. 26, 198504 St. Petersburg, Russia
| | - Elena V Grachova
- Department of Chemistry, St. Petersburg State University, Universitetskii pr. 26, 198504 St. Petersburg, Russia
| | - Maren Krause
- Department of Chemistry, University of Cologne, D-50939 Cologne, Germany
| | - Lukas Kletsch
- Department of Chemistry, University of Cologne, D-50939 Cologne, Germany
| | - Axel Klein
- Department of Chemistry, University of Cologne, D-50939 Cologne, Germany
| | - Cristian A Strassert
- Institut für Anorganische und Analytische Chemie, Westfälische Wilhelms-Universität Münster, Corrensstr. 28/30, D-48149 Münster, Germany.,CeNTech, CiMIC, SoN, Westfälische Wilhelms-Universität Münster, Heisenbergstr. 11, D-48149 Münster, Germany
| | - Igor O Koshevoy
- Department of Chemistry, University of Eastern Finland, P.O. Box 111, FI-80100 Joensuu, Finland
| | - Pipsa Hirva
- Department of Chemistry, University of Eastern Finland, P.O. Box 111, FI-80100 Joensuu, Finland
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28
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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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29
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Gao Q, Peng F, Wang C, Lin J, Chang X, Zou C, Lu W. Phosphorescent Zwitterionic Pt(
II
)
N
‐Heterocyclic
Allenylidene Complexes: Metallophilicity and Ionic
Self‐Assembly
†. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000674] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Qin Gao
- Department of Chemistry, Southern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Fei Peng
- Department of Chemistry, Southern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Chuanfei Wang
- Department of Chemistry, Southern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Jinqiang Lin
- Department of Chemistry, Southern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Xiaoyong Chang
- Department of Chemistry, Southern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Chao Zou
- Department of Chemistry, Southern University of Science and Technology Shenzhen Guangdong 518055 China
| | - Wei Lu
- Department of Chemistry, Southern University of Science and Technology Shenzhen Guangdong 518055 China
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30
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Deng Y, Wang M, Zhuang Y, Liu S, Huang W, Zhao Q. Circularly polarized luminescence from organic micro-/nano-structures. LIGHT, SCIENCE & APPLICATIONS 2021; 10:76. [PMID: 33840811 PMCID: PMC8039044 DOI: 10.1038/s41377-021-00516-7] [Citation(s) in RCA: 106] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 02/16/2021] [Accepted: 03/21/2021] [Indexed: 05/17/2023]
Abstract
Circularly polarized light exhibits promising applications in future displays and photonic technologies. Circularly polarized luminescence (CPL) from chiral luminophores is an ideal approach to directly generating circularly polarized light, in which the energy loss induced by the circularly polarized filters can be reduced. Among various chiral luminophores, organic micro-/nano-structures have attracted increasing attention owing to the high quantum efficiency and luminescence dissymmetry factor. Herein, the recent progress of CPL from organic micro-/nano-structures is summarized. Firstly, the design principles of CPL-active organic micro-/nano-structures are expounded from the construction of micro-/nano-structure and the introduction of chirality. Based on these design principles, several typical organic micro-/nano-structures with CPL activity are introduced in detail, including self-assembly of small molecules, self-assembly of π-conjugated polymers, and self-assembly on micro-/nanoscale architectures. Subsequently, we discuss the external stimuli that can regulate CPL performance, including solvents, pH value, metal ions, mechanical force, and temperature. We also summarize the applications of CPL-active materials in organic light-emitting diodes, optical information processing, and chemical and biological sensing. Finally, the current challenges and prospects in this emerging field are presented. It is expected that this review will provide a guide for the design of excellent CPL-active materials.
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Affiliation(s)
- Yongjing Deng
- State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) & Institute of Flexible Electronics (Future Technology), Nanjing University of Posts & Telecommunications (NUPT), 9 Wenyuan Road, 210023, Nanjing, Jiangsu, China
| | - Mengzhu Wang
- State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) & Institute of Flexible Electronics (Future Technology), Nanjing University of Posts & Telecommunications (NUPT), 9 Wenyuan Road, 210023, Nanjing, Jiangsu, China
| | - Yanling Zhuang
- State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) & Institute of Flexible Electronics (Future Technology), Nanjing University of Posts & Telecommunications (NUPT), 9 Wenyuan Road, 210023, Nanjing, Jiangsu, China
| | - Shujuan Liu
- State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) & Institute of Flexible Electronics (Future Technology), Nanjing University of Posts & Telecommunications (NUPT), 9 Wenyuan Road, 210023, Nanjing, Jiangsu, China
| | - Wei Huang
- State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) & Institute of Flexible Electronics (Future Technology), Nanjing University of Posts & Telecommunications (NUPT), 9 Wenyuan Road, 210023, Nanjing, Jiangsu, China.
- Frontiers Science Center for Flexible Electronics (FSCFE), MIIT Key Laboratory of Flexible Electronics (KLoFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, 710072, Xi'an, Shaanxi, China.
| | - Qiang Zhao
- State Key Laboratory of Organic Electronics and Information Displays & Jiangsu Key Laboratory for Biosensors, Institute of Advanced Materials (IAM) & Institute of Flexible Electronics (Future Technology), Nanjing University of Posts & Telecommunications (NUPT), 9 Wenyuan Road, 210023, Nanjing, Jiangsu, China.
- College of Electronic and Optical Engineering & College of Microelectronics, Jiangsu Province Engineering Research Center for Fabrication and Application of Special Optical Fiber Materials and Devices, Nanjing University of Posts and Telecommunications (NUPT), 9 Wenyuan Road, 210023, Nanjing, Jiangsu, China.
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31
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Lin J, Xie M, Zhang X, Gao Q, Chang X, Zou C, Lu W. Helically chiral Pd(ii) complexes containing intramolecular PdPd metallophilicity as circularly polarized molecular phosphors. Chem Commun (Camb) 2021; 57:1627-1630. [PMID: 33459300 DOI: 10.1039/d0cc08188d] [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
Carbon-centred chirality of the pincer-type cyclometalated ligands is transferred to the helical chirality of dinuclear and tetranuclear Pd(ii) arylacetylide complexes, and hence phosphorescence with quantum yields up to 50% and dissymmetry factors in the 10-3 scale from the metal-metal-to-ligand charge-transfer excited states has been recorded in diluted solutions.
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Affiliation(s)
- Jinqiang Lin
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, P. R. China
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32
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Sivchik V, Kochetov A, Eskelinen T, Kisel KS, Solomatina AI, Grachova EV, Tunik SP, Hirva P, Koshevoy IO. Modulation of Metallophilic and π-π Interactions in Platinum Cyclometalated Luminophores with Halogen Bonding. Chemistry 2021; 27:1787-1794. [PMID: 32970903 DOI: 10.1002/chem.202003952] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 09/23/2020] [Indexed: 12/11/2022]
Abstract
Luminescent cyclometalated complexes [M(C^N^N)CN] (M=Pt, Pd; HC^N^N=pyridinyl- (M=Pt 1, Pd 5), benzyltriazolyl- (M=Pt 2), indazolyl- (M=Pt 3, Pd 6), pyrazolyl-phenylpyridine (M=Pt 4)) decorated with cyanide ligand, have been explored as nucleophilic building blocks for the construction of halogen-bonded (XB) adducts using IC6 F5 as an XB donor. The negative electrostatic potential of the CN group afforded CN⋅⋅⋅I noncovalent interactions for platinum complexes 1-3; the energies of XB contacts are comparable to those of metallophilic bonding according to QTAIM analysis. Embedding the chromophore units into XB adducts 1-3⋅⋅⋅IC6 F5 has little effect on the charge distribution, but strongly affects Pt⋅⋅⋅Pt bonding and π-stacking, which lead to excited states of MMLCT (metal-metal-to-ligand charge transfer) origin. The energies of these states and the photoemissive properties of the crystalline materials are primarily determined by the degree of aggregation of the luminophores via metal-metal interactions. The adduct formation depends on the nature of the metal and the structure of the metalated ligand, the variation of which can yield dynamic XB-supported systems, exemplified by thermally regulated transition 3↔3⋅⋅⋅IC6 F5 .
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Affiliation(s)
- Vasily Sivchik
- Department of Chemistry, University of Eastern Finland, 80101, Joensuu, Finland
| | - Aleksandr Kochetov
- Department of Chemistry, University of Eastern Finland, 80101, Joensuu, Finland
| | - Toni Eskelinen
- Department of Chemistry, University of Eastern Finland, 80101, Joensuu, Finland
| | - Kristina S Kisel
- Institute of Chemistry, St. Petersburg State University, Universitetskiy pr. 26, Petergof, St. Petersburg, Russia
| | - Anastasia I Solomatina
- Institute of Chemistry, St. Petersburg State University, Universitetskiy pr. 26, Petergof, St. Petersburg, Russia
| | - Elena V Grachova
- Institute of Chemistry, St. Petersburg State University, Universitetskiy pr. 26, Petergof, St. Petersburg, Russia
| | - Sergey P Tunik
- Institute of Chemistry, St. Petersburg State University, Universitetskiy pr. 26, Petergof, St. Petersburg, Russia
| | - Pipsa Hirva
- Department of Chemistry, University of Eastern Finland, 80101, Joensuu, Finland
| | - Igor O Koshevoy
- Department of Chemistry, University of Eastern Finland, 80101, Joensuu, Finland
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33
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Liu M, Han Y, Zhong H, Zhang X, Wang F. Supramolecular Chirogenesis Induced by Platinum(II) Tweezers with Excellent Environmental Tolerance. Angew Chem Int Ed Engl 2020; 60:3498-3503. [PMID: 33118695 DOI: 10.1002/anie.202012901] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Revised: 10/17/2020] [Indexed: 11/06/2022]
Abstract
Supramolecular chirogenesis has emerged as an effective strategy to access symmetry breaking in artificial systems. However, the chirogenic signals suffer from high susceptibility toward environmental variations. An effective strategy has been developed to address this issue by constructing platinum(II)-based tweezer/guest complexes stabilized by two-fold donor-acceptor and PtII -PtII metal-metal interactions. Upon guest encapsulation, the two pincers on the achiral PtII tweezer undergo a stereospecific twist to minimize steric repulsion, thus locking tweezer/guest complexes into the preferred chiral conformations. The induced chiroptical effects display outstanding solvent and temperature tolerance, ascribed to the balance between electrostatic and desolvation effects for the involved non-covalent interactions. Moreover, hierarchical and multi-component supramolecular assembly of tweezer/guest complexes provide a convenient way to modulate chirogeneic signals for their intensities.
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Affiliation(s)
- Mingyang Liu
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Yifei Han
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Hua Zhong
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Xiaolong Zhang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
| | - Feng Wang
- CAS Key Laboratory of Soft Matter Chemistry, Department of Polymer Science and Engineering, University of Science and Technology of China, Hefei, Anhui, 230026, P. R. China
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34
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Liu M, Han Y, Zhong H, Zhang X, Wang F. Supramolecular Chirogenesis Induced by Platinum(II) Tweezers with Excellent Environmental Tolerance. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202012901] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Mingyang Liu
- CAS Key Laboratory of Soft Matter Chemistry Department of Polymer Science and Engineering University of Science and Technology of China Hefei Anhui 230026 P. R. China
| | - Yifei Han
- CAS Key Laboratory of Soft Matter Chemistry Department of Polymer Science and Engineering University of Science and Technology of China Hefei Anhui 230026 P. R. China
| | - Hua Zhong
- CAS Key Laboratory of Soft Matter Chemistry Department of Polymer Science and Engineering University of Science and Technology of China Hefei Anhui 230026 P. R. China
| | - Xiaolong Zhang
- CAS Key Laboratory of Soft Matter Chemistry Department of Polymer Science and Engineering University of Science and Technology of China Hefei Anhui 230026 P. R. China
| | - Feng Wang
- CAS Key Laboratory of Soft Matter Chemistry Department of Polymer Science and Engineering University of Science and Technology of China Hefei Anhui 230026 P. R. China
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35
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Sign inversion of excimer circularly polarized luminescence in water-soluble bipyrenyl oligopeptides through an odd-even effect. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152238] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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36
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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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37
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Han Y, Gao Z, Wang C, Zhong R, Wang F. Recent progress on supramolecular assembly of organoplatinum(II) complexes into long-range ordered nanostructures. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213300] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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38
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Han J, Lu H, Xu Y, Guo S, Zheng X, Tao P, Liu S, Zhang X, Zhao Q. Concentration-dependent circularly polarized luminescence of chiral cyclometalated platinum(II) complexes for electroluminescence. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121240] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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39
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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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40
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Yang QY, Zhang HH, Han XL, Weng SD, Chen Y, Wu JL, Han LZ, Zhang XP, Shi ZF. Enhanced Circularly Polarized Luminescence Activity in Chiral Platinum(II) Complexes With Bis- or Triphenylphosphine Ligands. Front Chem 2020; 8:303. [PMID: 32391328 PMCID: PMC7193082 DOI: 10.3389/fchem.2020.00303] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 03/26/2020] [Indexed: 12/17/2022] Open
Abstract
Distinct circularly polarized luminescence (CPL) activity was observed in chiral (C∧N∧N)Pt(II) [(C∧N∧N) = 4,5-pinene-6'-phenyl-2,2'-bipyridine] complexes with bis- or triphenylphosphine ligands. Compared to the pseudo-square-planar geometry of chiral (C∧N∧N)Pt(II) complexes with chloride, phenylacetylene (PPV) and 2,6-dimethylphenyl isocyanide (Dmpi) ligands, the coordination configuration around the Pt(II) nucleus of chiral (C∧N∧N)Pt(II) complexes with bulk phosphine ligands is far more distorted. The geometry is straightforwardly confirmed by X-ray crystallography. The phosphines' participation enhanced the CPL signal of Pt(II) complexes profoundly, with the dissymmetry factor (g lum) up to 10-3. The distorted structures and enhanced chiroptical signals were further confirmed by time-dependent density functional theory (TD-DFT) calculations.
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Affiliation(s)
- Qian-Ying Yang
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, China
| | - Hua-Hong Zhang
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, China
| | - Xue-Ling Han
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, China
| | - Shi-Dao Weng
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, China
| | - Yuan Chen
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, China
| | - Jia-Li Wu
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, China
| | - Li-Zhi Han
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, China
| | - Xiao-Peng Zhang
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, China
| | - Zai-Feng Shi
- Key Laboratory of Water Pollution Treatment & Resource Reuse of Hainan Province, College of Chemistry and Chemical Engineering, Hainan Normal University, Haikou, China
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41
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Yang J, Li K, Wang J, Sun S, Chi W, Wang C, Chang X, Zou C, To W, Li M, Liu X, Lu W, Zhang H, Che C, Chen Y. Controlling Metallophilic Interactions in Chiral Gold(I) Double Salts towards Excitation Wavelength‐Tunable Circularly Polarized Luminescence. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202000792] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jian‐Gong Yang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials & CAS-HKU Joint Laboratory on New MaterialsTechnical Institute of Physics and ChemistryChinese Academy of Sciences Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Kai Li
- Shenzhen Key Laboratory of Polymer Science and TechnologyCollege of Materials Science and EngineeringShenzhen University Shenzhen 518055 P. R. China
| | - Jian Wang
- Institute of Theoretical ChemistryCollege of ChemistryJilin University Changchun 130023 P. R. China
| | - Shanshan Sun
- Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong ProvinceDepartment of ChemistryShantou University Shantou 515031 P. R. China
| | - Weijie Chi
- Singapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore
| | - Chao Wang
- Singapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore
| | - Xiaoyong Chang
- Department of ChemistrySouthern University of Science and Technology Shenzhen 518055 P. R. China
| | - Chao Zou
- Department of ChemistrySouthern University of Science and Technology Shenzhen 518055 P. R. China
| | - Wai‐Pong To
- State Key Laboratory of Synthetic Chemistry & Department of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong SAR P. R. China
| | - Ming‐De Li
- Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong ProvinceDepartment of ChemistryShantou University Shantou 515031 P. R. China
| | - Xiaogang Liu
- Singapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore
| | - Wei Lu
- Department of ChemistrySouthern University of Science and Technology Shenzhen 518055 P. R. China
| | - Hong‐Xing Zhang
- Institute of Theoretical ChemistryCollege of ChemistryJilin University Changchun 130023 P. R. China
| | - Chi‐Ming Che
- State Key Laboratory of Synthetic Chemistry & Department of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong SAR P. R. China
| | - Yong Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials & CAS-HKU Joint Laboratory on New MaterialsTechnical Institute of Physics and ChemistryChinese Academy of Sciences Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
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42
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Yang J, Li K, Wang J, Sun S, Chi W, Wang C, Chang X, Zou C, To W, Li M, Liu X, Lu W, Zhang H, Che C, Chen Y. Controlling Metallophilic Interactions in Chiral Gold(I) Double Salts towards Excitation Wavelength‐Tunable Circularly Polarized Luminescence. Angew Chem Int Ed Engl 2020; 59:6915-6922. [DOI: 10.1002/anie.202000792] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Jian‐Gong Yang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials & CAS-HKU Joint Laboratory on New MaterialsTechnical Institute of Physics and ChemistryChinese Academy of Sciences Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
| | - Kai Li
- Shenzhen Key Laboratory of Polymer Science and TechnologyCollege of Materials Science and EngineeringShenzhen University Shenzhen 518055 P. R. China
| | - Jian Wang
- Institute of Theoretical ChemistryCollege of ChemistryJilin University Changchun 130023 P. R. China
| | - Shanshan Sun
- Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong ProvinceDepartment of ChemistryShantou University Shantou 515031 P. R. China
| | - Weijie Chi
- Singapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore
| | - Chao Wang
- Singapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore
| | - Xiaoyong Chang
- Department of ChemistrySouthern University of Science and Technology Shenzhen 518055 P. R. China
| | - Chao Zou
- Department of ChemistrySouthern University of Science and Technology Shenzhen 518055 P. R. China
| | - Wai‐Pong To
- State Key Laboratory of Synthetic Chemistry & Department of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong SAR P. R. China
| | - Ming‐De Li
- Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong ProvinceDepartment of ChemistryShantou University Shantou 515031 P. R. China
| | - Xiaogang Liu
- Singapore University of Technology and Design 8 Somapah Road Singapore 487372 Singapore
| | - Wei Lu
- Department of ChemistrySouthern University of Science and Technology Shenzhen 518055 P. R. China
| | - Hong‐Xing Zhang
- Institute of Theoretical ChemistryCollege of ChemistryJilin University Changchun 130023 P. R. China
| | - Chi‐Ming Che
- State Key Laboratory of Synthetic Chemistry & Department of ChemistryThe University of Hong Kong Pokfulam Road Hong Kong SAR P. R. China
| | - Yong Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials & CAS-HKU Joint Laboratory on New MaterialsTechnical Institute of Physics and ChemistryChinese Academy of Sciences Beijing 100190 P. R. China
- University of Chinese Academy of Sciences Beijing 100049 P. R. China
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43
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Jiang Z, Wang J, Gao T, Ma J, Liu Z, Chen R. Rational Design of Axially Chiral Platinabinaphthalenes with Aggregation-Induced Emission for Red Circularly Polarized Phosphorescent Organic Light-Emitting Diodes. ACS APPLIED MATERIALS & INTERFACES 2020; 12:9520-9527. [PMID: 31990175 DOI: 10.1021/acsami.9b20568] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Circularly polarized luminescent (CPL) materials have received a lot of interest due to their potential applications in next-generation displays. However, the development of easily accessible red circularly polarized phosphorescent emitters for practical organic light-emitting diodes fabrication remains a grand challenge. In this paper, we report a new family of CPL-active platinum complexes based on the binaphthalene chiral platform. These axially chiral platinabinaphthalenes were facile synthesized by directly incorporating platinum(II) into the π-conjugated backbone of a commercially available enantiopure binaphthalene derivate. These complexes exhibit aggregation-induced circularly polarized phosphorescence enhancement with high quantum yields of up to 66% and luminescence dissymmetry factors of around 2.6 × 10-3. Moreover, solution-processable circularly polarized organic light-emitting diodes (CPOLEDs) using these complexes as emitters show good performance with the maximum luminance of up to 3500 cd m-2 and dissymmetry factor values of around 1.0 × 10-3. These findings by the rational design of axially chiral platinabinaphthalenes are important for the development of high-performance CPL complexes for CPOLEDs.
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Affiliation(s)
- Zhiyong Jiang
- College of Materials Science and Engineering , Nanjing Forestry University , 159 Longpan Road , Xuanwu District, Nanjing 210037 , China
- Key Laboratory of Flexible Electronics, Institute of Advanced Materials , Nanjing Tech University (NanjingTech) , Nanjing 211816 , China
| | - Jun Wang
- Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts & Telecommunications , 9 Weyuan Road , Nanjing 210023 , China
| | - Tingting Gao
- College of Materials Science and Engineering , Nanjing Forestry University , 159 Longpan Road , Xuanwu District, Nanjing 210037 , China
- Key Laboratory of Flexible Electronics, Institute of Advanced Materials , Nanjing Tech University (NanjingTech) , Nanjing 211816 , China
| | - Jianping Ma
- School of Chemistry and Chemical Engineering , Shandong Normal University , Jinan 250014 , China
| | - Zhipeng Liu
- College of Materials Science and Engineering , Nanjing Forestry University , 159 Longpan Road , Xuanwu District, Nanjing 210037 , China
| | - Runfeng Chen
- Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing University of Posts & Telecommunications , 9 Weyuan Road , Nanjing 210023 , China
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44
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Abstract
Recent progress in chiroptical switches including on/off, amplification, and inversion of the chiral signals such as ECD and CPL in supramolecular assemblies is shown.
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Affiliation(s)
- Li Zhang
- Beijing National Laboratory for Molecular Science (BNLMS)
- CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Han-Xiao Wang
- Beijing National Laboratory for Molecular Science (BNLMS)
- CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Shuai Li
- Beijing National Laboratory for Molecular Science (BNLMS)
- CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
| | - Minghua Liu
- Beijing National Laboratory for Molecular Science (BNLMS)
- CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics
- Institute of Chemistry
- Chinese Academy of Sciences
- Beijing 100190
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45
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Tabrizi L, Zouchoune B, Zaiter A. Theoretical and experimental study of gold(III), palladium(II), and platinum (II) complexes with 3-((4-nitrophenyl)thio)phenylcyanamide and 2,2′-bipyridine ligands: Cytotoxic activity and interaction with 9-methylguanine. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2019.119211] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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46
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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. [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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47
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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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48
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Usuki T, Uchida H, Omoto K, Yamanoi Y, Yamada A, Iwamura M, Nozaki K, Nishihara H. Enhancement of the Photofunction of Phosphorescent Pt(II) Cyclometalated Complexes Driven by Substituents: Solid-State Luminescence and Circularly Polarized Luminescence. J Org Chem 2019; 84:10749-10756. [PMID: 31366198 DOI: 10.1021/acs.joc.9b01285] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Ligand functionalization is an attractive strategy for enhancing the performance of metal-based phosphorescent emitters. Here, we report the synthesis and characterization of cyclometalated Pt(II) complexes Pt3 and Pt4 containing organosilyl-substituted (2-(2-thienyl)pyridine) ligands and compare their properties with those of Pt1 (no substituent) and Pt2 (organocarbon substituent). The photophysical characteristics of these molecules, including their absorption and phosphorescence spectra, phosphorescence quantum yield and lifetime, were investigated. The molecular structures were revealed by X-ray diffraction analysis. Under UV light irradiation, Pt2-Pt4 emitted intense orange phosphorescence in the solid state because of the bulkiness of their side chains (up to ΦP: 0.49). Optically pure (-)-(S)Si-Pt4 and (+)-(R)Si-Pt4 were prepared using the optically active ligands (+)-L4 and (-)-L4, respectively. The chiroptical properties of (+)-(R)Si-Pt4, which has an asymmetric silicon atom, were investigated. Circular dichroism and circularly polarized luminescence measurements showed that these structural motifs are suitable for applications in chiroptical phosphorescent materials.
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Affiliation(s)
- Tsukasa Usuki
- Department of Chemistry, School of Science , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku, Tokyo 113-0033 , Japan
| | - Hikaru Uchida
- Department of Chemistry, School of Science , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku, Tokyo 113-0033 , Japan
| | - Kenichiro Omoto
- Department of Chemistry, School of Science , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku, Tokyo 113-0033 , Japan
| | - Yoshinori Yamanoi
- Department of Chemistry, School of Science , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku, Tokyo 113-0033 , Japan
| | - Ayano Yamada
- Graduate School of Science and Engineering , University of Toyama , 3190 Gofuku , Toyama 930-8555 , Japan
| | - Munetaka Iwamura
- Graduate School of Science and Engineering , University of Toyama , 3190 Gofuku , Toyama 930-8555 , Japan
| | - Koichi Nozaki
- Graduate School of Science and Engineering , University of Toyama , 3190 Gofuku , Toyama 930-8555 , Japan
| | - Hiroshi Nishihara
- Department of Chemistry, School of Science , The University of Tokyo , 7-3-1 Hongo , Bunkyo-ku, Tokyo 113-0033 , Japan
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49
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Willot J, Lugan N, Valyaev DA. Binuclear Cu(I) and Mn(0) Complexes with a Tridentate Pyridine-NHC-Phosphane Ligand in a µ-κ2
Ĉ,N
-M;κ1
P
-M Coordination Mode. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900628] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Jérémy Willot
- LCC-CNRS; Université de Toulouse; CNRS, UPS, Toulouse, France; 205 route de Narbonne 31077 Toulouse Cedex 4 France
| | - Noël Lugan
- LCC-CNRS; Université de Toulouse; CNRS, UPS, Toulouse, France; 205 route de Narbonne 31077 Toulouse Cedex 4 France
| | - Dmitry A. Valyaev
- LCC-CNRS; Université de Toulouse; CNRS, UPS, Toulouse, France; 205 route de Narbonne 31077 Toulouse Cedex 4 France
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50
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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: 25] [Impact Index Per Article: 5.0] [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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