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Päpcke A, Friedrich A, Lochbrunner S. Revealing the initial steps in homogeneous photocatalysis by time-resolved spectroscopy. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2020; 32:153001. [PMID: 31801126 DOI: 10.1088/1361-648x/ab5ed1] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Photocatalysis attracts currently intense research since it can provide efficient routes for generating solar fuels and allows to apply sunlight for an environmentally friendly synthesis of valuable chemical compounds. Accordingly, in future photocatalysis may contribute significantly to a sustainable economy. However, up to now photocatalysis has made it only into some niche applications. The reasons are manifold including too low yields, insufficient stability, and scarce availability of the precious metals and rare earths used in most cases. The design of better systems is the goal of many research activities. They call for a detailed knowledge of the individual steps and the microscopic mechanisms. Time-resolved spectroscopy is a powerful tool to improve our understanding of the individual steps of a photocatalytic process and of the efficiencies and losses associated with them. This allows to address specific weaknesses of the components of a photocatalytic system and to pursue a rational design of the corresponding compounds. In this review an overview is given about what insights can be gained by time-resolved spectroscopy referring mostly to our own results while it has to be stressed that many other groups are also highly successfully working in this area. We restrict ourselves to homogeneous systems which are often easier to analyze and focus on the primary steps occurring after optical excitation. This includes intramolecular relaxation and intersystem crossing in the photosensitizer as well as the first electron transfer step resulting from the interaction of the sensitizer with other components of the system. Ultrafast pump-probe spectroscopy turns out to be particularly helpful in analyzing new photosensitizers based on abundant metals, i.e. copper and iron. These sensitizers can suffer from short lifetimes of the metal-to-ligand charge transfer states which are typically involved in the intermolecular charge transfer processes. The latter are investigated on the pico- to microsecond timescale by quenching experiments making use of a streak camera and by pump-probe spectroscopy applying a YAG-laser system for excitation. The experiments with the streak camera allow to discriminate between oxidative and reductive pathways and to determine the corresponding bimolecular quenching rates which are compared to their diffusion limit to obtain a measure for the quenching efficiency. By applying transient absorption spectroscopy, it is furthermore possible to observe appearing charge transfer products and to determine their concentrations. In this way the efficiency of the electron transfer itself can be deduced and the relevance of lossy quenching events can be estimated.
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Affiliation(s)
- Ayla Päpcke
- Institute for Physics and Department of Life, Light and Matter, University of Rostock, 18051 Rostock, Germany
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152
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Highly efficient blue organic light-emitting diodes based on carbene-metal-amides. Nat Commun 2020; 11:1758. [PMID: 32273497 PMCID: PMC7145843 DOI: 10.1038/s41467-020-15369-8] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 03/03/2020] [Indexed: 11/13/2022] Open
Abstract
Carbene-metal-amides are soluble and thermally stable materials which have recently emerged as emitters in high-performance organic light-emitting diodes. Here we synthesise carbene-metal-amide photoemitters with CF3-substituted ligands to show sky-blue to deep-blue photoluminescence from charge-transfer excited states. We demonstrate that the emission colour can be adjusted from blue to yellow and observe that the relative energies of charge transfer and locally excited triplet states influence the performance of the deep-blue emission. High thermal stability and insensitivity to aggregation-induced luminescence quenching allow us to fabricate organic light-emitting diodes in both host-free and host-guest architectures. We report blue devices with a peak external quantum efficiency of 17.3% in a host-free emitting layer and 20.9% in a polar host. Our findings inform the molecular design of the next generation of stable blue carbene-metal-amide emitters. Realizing efficient blue-emitting organic light-emitting diodes (OLEDs) with long operational lifetime is key to the development of future display technologies. Here, the authors report efficient host-guest and host-free OLEDs featuring designed carbene-metal-amide-type deep-blue photoemitters.
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153
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Jazzar R, Soleilhavoup M, Bertrand G. Cyclic (Alkyl)- and (Aryl)-(amino)carbene Coinage Metal Complexes and Their Applications. Chem Rev 2020; 120:4141-4168. [DOI: 10.1021/acs.chemrev.0c00043] [Citation(s) in RCA: 131] [Impact Index Per Article: 32.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Rodolphe Jazzar
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Michele Soleilhavoup
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
| | - Guy Bertrand
- UCSD-CNRS Joint Research Laboratory (UMI 3555), Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0358, United States
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154
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Xu C, Li HM, Wang ZQ, Han X, Fu WJ, Hao XQ. Synthesis, Structures and Photophysical Properties of Cationic Cyclometalated Iridium(III) Complexes Bearing N
-Phenylcarbazole Group. Z Anorg Allg Chem 2020. [DOI: 10.1002/zaac.201900340] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Chen Xu
- School of Environmental and Chemical Engineering; Jiangsu University of Science and Technology; 212003 Zhenjiang Jiangsu P. R. China
| | - Hong-Mei Li
- School of Environmental and Chemical Engineering; Jiangsu University of Science and Technology; 212003 Zhenjiang Jiangsu P. R. China
| | - Zhi-Qiang Wang
- College of Chemistry and Chemical Engineering; Luoyang Normal University; 471022 Luoyang Henan P. R. China
| | - Xin Han
- College of Chemistry and Molecular Engineering; Zhengzhou University; 450001 Zhengzhou Henan P. R. China
| | - Wei-Jun Fu
- College of Chemistry and Chemical Engineering; Luoyang Normal University; 471022 Luoyang Henan P. R. China
| | - Xin-Qi Hao
- College of Chemistry and Molecular Engineering; Zhengzhou University; 450001 Zhengzhou Henan P. R. China
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155
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Avinash I, Parveen S, Anantharaman G. Backbone Boron-Functionalized Imidazoles/Imidazolium Salts: Synthesis, Structure, Metalation Studies, and Fluoride Sensing Properties. Inorg Chem 2020; 59:5646-5661. [DOI: 10.1021/acs.inorgchem.0c00348] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Iruthayaraj Avinash
- Department of Chemistry, Indian Institute of Technology, Kanpur, Uttar Pradesh 208016, India
| | - Sabeeha Parveen
- Department of Chemistry, Indian Institute of Technology, Kanpur, Uttar Pradesh 208016, India
| | - Ganapathi Anantharaman
- Department of Chemistry, Indian Institute of Technology, Kanpur, Uttar Pradesh 208016, India
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156
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Abstract
Curcumin complex compound, MLn (L = curcumin; M = Na+, Mg2+, Cu2+) has been synthesized from the reaction between curcumin and metal precursors (NaCl, MgSO4.7H2O, CuCl2.2H2O) in ethanol under reflux conditions. Synthesis takes place through the reaction between the metal ions Na+, Mg2+, or Cu2+ as the central atom and curcumin as the ligand. Curcumin has been consumed after the reaction lasts for four hours, shown by thin-layer chromatography in which a new spot appears at higher Rf as the spot of curcumin disappears in the reaction mixture. Compared with the spectrum of curcumin, the FTIR spectra of the complexes show changes in the absorption bands and shifts of wave numbers particularly in absorption bands of phenolic –OH and C=O enol groups which strongly indicates the coordination of metal ions with the curcumin ligand which is proposed to be in β–1,3 diketone system. Also, the FTIR spectra of the reaction product showed typical absorption bands for the metal-oxygen group, M–O, at 524 cm–1, 670 cm–1 and 470 cm–1 in Na+–curcumin, Mg2+–curcumin and Cu2+–curcumin, respectively.
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157
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Liguori PF, Ghedini M, La Deda M, Godbert N, Parisi F, Guzzi R, Ionescu A, Aiello I. Electrochromic behaviour of Ir(iii) bis-cyclometalated 1,2-dioxolene tetra-halo complexes: fully reversible catecholate/semiquinone redox switches. Dalton Trans 2020; 49:2628-2635. [PMID: 32039433 DOI: 10.1039/c9dt04848k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Neutral cyclometalated Ir(iii) complexes of general formula [Ir(ppy)2(O^O)squi], where ppy = 2-phenylpyridine and (O^O)squi = TBC (tetrabromocatechol) or TCC (tetrachlorocatechol) in their semiquinone (squi) monoanionic redox state, were synthesized by chemically oxidizing the anionic parent complexes NBu4[Ir(ppy)2(O^O)cat], in which (O^O)cat represents the corresponding ancillary dioxolene ligand in its dianionic catecholate (cat) redox state. This chemical oxidation leads to the modification of both the photophysical and the magnetic properties of the complexes. While the NBu4[Ir(ppy)2(O^O)cat] complexes are diamagnetic (D) and yellow-orange solids, the corresponding oxidized complexes [Ir(ppy)2(O^O)squi] display paramagnetic (P) properties and are characterized by a dark-green color. The conversion between the two forms (squi vs. cat) is electrochemically and chemically fully reversible. Indeed, the anionic NBu4[Ir(ppy)2(O^O)cat] complexes are quantitatively restored by chemical reduction of the neutral [Ir(ppy)2(O^O)squi] parents. These complexes therefore represent interesting redox based switches between multi-parameter states since they allow switching from a neutral paramagnetic to an anionic diamagnetic form together with a significant change in chromicity. Taking advantage of the significant color difference between the oxidized and the reduced form, an electrochromic cell was prepared with [Ir(ppy)2(TBC)squi] and its spectroelectrochemical properties are reported.
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Affiliation(s)
- Paola Francesca Liguori
- MAT_InLAB and LASCAMM - CR INSTM, Unità INSTM della Calabria, Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, 87036 Arcavacata di Rende (CS), Italy.
| | - Mauro Ghedini
- MAT_InLAB and LASCAMM - CR INSTM, Unità INSTM della Calabria, Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, 87036 Arcavacata di Rende (CS), Italy. and CNR-NANOTEC, Istituto di Nanotecnologia U.O.S. Cosenza, 87036 Arcavacata di Rende (CS), Italy
| | - Massimo La Deda
- MAT_InLAB and LASCAMM - CR INSTM, Unità INSTM della Calabria, Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, 87036 Arcavacata di Rende (CS), Italy. and CNR-NANOTEC, Istituto di Nanotecnologia U.O.S. Cosenza, 87036 Arcavacata di Rende (CS), Italy
| | - Nicolas Godbert
- MAT_InLAB and LASCAMM - CR INSTM, Unità INSTM della Calabria, Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, 87036 Arcavacata di Rende (CS), Italy. and CNR-NANOTEC, Istituto di Nanotecnologia U.O.S. Cosenza, 87036 Arcavacata di Rende (CS), Italy
| | - Francesco Parisi
- MAT_InLAB and LASCAMM - CR INSTM, Unità INSTM della Calabria, Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, 87036 Arcavacata di Rende (CS), Italy.
| | - Rita Guzzi
- CNR-NANOTEC, Istituto di Nanotecnologia U.O.S. Cosenza, 87036 Arcavacata di Rende (CS), Italy and Dipartimento di Fisica, Università della Calabria, 87036 Arcavacata di Rende (CS), Italy
| | - Andreea Ionescu
- MAT_InLAB and LASCAMM - CR INSTM, Unità INSTM della Calabria, Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, 87036 Arcavacata di Rende (CS), Italy.
| | - Iolinda Aiello
- MAT_InLAB and LASCAMM - CR INSTM, Unità INSTM della Calabria, Dipartimento di Chimica e Tecnologie Chimiche, Università della Calabria, 87036 Arcavacata di Rende (CS), Italy. and CNR-NANOTEC, Istituto di Nanotecnologia U.O.S. Cosenza, 87036 Arcavacata di Rende (CS), Italy
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158
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Giereth R, Mengele AK, Frey W, Kloß M, Steffen A, Karnahl M, Tschierlei S. Copper(I) Phosphinooxazoline Complexes: Impact of the Ligand Substitution and Steric Demand on the Electrochemical and Photophysical Properties. Chemistry 2020; 26:2675-2684. [PMID: 31747089 PMCID: PMC7065177 DOI: 10.1002/chem.201904379] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Indexed: 12/29/2022]
Abstract
A series of seven homoleptic CuI complexes based on hetero-bidentate P^N ligands was synthesized and comprehensively characterized. In order to study structure-property relationships, the type, size, number and configuration of substituents at the phosphinooxazoline (phox) ligands were systematically varied. To this end, a combination of X-ray diffraction, NMR spectroscopy, steady-state absorption and emission spectroscopy, time-resolved emission spectroscopy, quenching experiments and cyclic voltammetry was used to assess the photophysical and electrochemical properties. Furthermore, time-dependent density functional theory calculations were applied to also analyze the excited state structures and characteristics. Surprisingly, a strong dependency on the chirality of the respective P^N ligand was found, whereas the specific kind and size of the different substituents has only a minor impact on the properties in solution. Most importantly, all complexes except C3 are photostable in solution and show fully reversible redox processes. Sacrificial reductants were applied to demonstrate a successful electron transfer upon light irradiation. These properties render this class of photosensitizers as potential candidates for solar energy conversion issues.
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Affiliation(s)
- Robin Giereth
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Alexander K Mengele
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
| | - Wolfgang Frey
- Institute of Organic Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Marvin Kloß
- Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Strasse 6, 44227, Dortmund, Germany
| | - Andreas Steffen
- Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Strasse 6, 44227, Dortmund, Germany
| | - Michael Karnahl
- Institute of Organic Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Stefanie Tschierlei
- Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, 89081, Ulm, Germany
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159
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Molotkov AP, Arsenov MA, Kapustin DA, Muratov DV, Shepel' NE, Fedorov YV, Smol'yakov AF, Knyazeva EI, Lypenko DA, Dmitriev AV, Aleksandrov AE, Maltsev EI, Loginov DA. Effect of Cp-Ligand Methylation on Rhodium(III)-Catalyzed Annulations of Aromatic Carboxylic Acids with Alkynes: Synthesis of Isocoumarins and PAHs for Organic Light-Emitting Devices. Chempluschem 2020; 85:334-345. [PMID: 32048812 DOI: 10.1002/cplu.202000048] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 01/28/2020] [Indexed: 01/24/2023]
Abstract
An efficient protocol was developed for the synthesis of π-extended isocoumarins and polycyclic aromatic hydrocarbons based on the oxidative coupling of aromatic carboxylic acids with internal alkynes catalyzed by (cyclopentadienyl)rhodium complexes. The coupling chemoselectivity strongly depends on whether Cp or the methylated Cp* ligands are used. The pentamethyl derivative [Cp*RhCl2 ]2 predominantly gives isocoumarins, while the non-methylated complex [CpRhI2 ]n produces naphthalene derivatives. The polyaromatic carboxylic acids (such as 1-naphthoic acid, 1-pyrenecarboxylic acid, fluorene-1-carboxylic acid, and dibenzofuran-4-carboxylic acid) are suitable for this approach. A mixture of Cp*H/RhCl3 can be used as a catalyst instead of [Cp*RhCl2 ]2 . The structures of 3,4-diphenylindeno[1,2-h]isochromen-1(11H)-one and 7,10-dimethyl-8,9-diphenylbenzo[pqr]tetraphene were determined by X-ray diffraction. In addition, the optical properties of the prepared compounds were studied. 7,8-Diphenyl-10H-phenaleno[1,9-gh]isochromen-10-one was employed as an emissive layer for OLED manufacturing. The OLED emits yellow-green light with a maximum intensity 1740 cd ⋅ m-2 at 15 V.
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Affiliation(s)
- Alexander P Molotkov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Science, 28 ul. Vavilova, 119991, Moscow, Russian Federation
| | - Mikhail A Arsenov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Science, 28 ul. Vavilova, 119991, Moscow, Russian Federation
| | - Daniil A Kapustin
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Science, 28 ul. Vavilova, 119991, Moscow, Russian Federation
| | - Dmitry V Muratov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Science, 28 ul. Vavilova, 119991, Moscow, Russian Federation
| | - Nikolay E Shepel'
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Science, 28 ul. Vavilova, 119991, Moscow, Russian Federation
| | - Yury V Fedorov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Science, 28 ul. Vavilova, 119991, Moscow, Russian Federation
| | - Alexander F Smol'yakov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Science, 28 ul. Vavilova, 119991, Moscow, Russian Federation.,Faculty of Science, RUDN University, 6 Miklukho-Maklaya St., Moscow, 117198, Russian Federation.,Plekhanov Russian University of Economics, Stremyanny per. 36, Moscow, 117997, Russian Federation
| | - Elena I Knyazeva
- Faculty of Science, RUDN University, 6 Miklukho-Maklaya St., Moscow, 117198, Russian Federation
| | - Dmitry A Lypenko
- A.N. Frumkin Institute of Physical Chemistry and, Electrochemistry of the Russian Academy of Sciences, Leninsky Prosp. 31, bld.4, Moscow, 119071, Russian Federation
| | - Artem V Dmitriev
- A.N. Frumkin Institute of Physical Chemistry and, Electrochemistry of the Russian Academy of Sciences, Leninsky Prosp. 31, bld.4, Moscow, 119071, Russian Federation
| | - Alexey E Aleksandrov
- A.N. Frumkin Institute of Physical Chemistry and, Electrochemistry of the Russian Academy of Sciences, Leninsky Prosp. 31, bld.4, Moscow, 119071, Russian Federation
| | - Eugeny I Maltsev
- A.N. Frumkin Institute of Physical Chemistry and, Electrochemistry of the Russian Academy of Sciences, Leninsky Prosp. 31, bld.4, Moscow, 119071, Russian Federation
| | - Dmitry A Loginov
- A. N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Science, 28 ul. Vavilova, 119991, Moscow, Russian Federation
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160
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Fu G, He Y, Li W, Miao T, Lü X, He H, Liu L, Wong WY. Efficient white polymer light-emitting diodes (WPLEDs) based on covalent-grafting of [Zn2(MP)3(OAc)] into PVK. Chem Sci 2020; 11:2640-2646. [PMID: 34084322 PMCID: PMC8157705 DOI: 10.1039/c9sc05288g] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Thanks to the straightforward white light of single grafting-type polymers based on earth-abundant Zn(ii)-complexes, producing cost-effective flexible WOLEDs/WPLEDs with good device performance remains a formidable challenge. Herein, by using the polymer Poly(NVK-co-[Zn2(MP)3(OAc)]) with excellent physical properties for single-layer WPLEDs, record-high efficiencies (η Max c = 13.0 cd A-1, η Max p = 6.1 lm W-1 and η Max EQE = 9.2%) and low (ca. 25%) efficiency roll-off compared to previous organo-Zn2+-based WOLEDs/WPLEDs are realized. This finding renders single Zn(ii)-complex-grafted polymers a new route to low-cost and large-area flexible WPLEDs for potential full-colour flat displays.
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Affiliation(s)
- Guorui Fu
- School of Chemical Engineering, Northwest University Xi'an 710069 Shaanxi China
| | - Yani He
- School of Chemical Engineering, Northwest University Xi'an 710069 Shaanxi China
| | - Wentao Li
- School of Chemical Engineering, Northwest University Xi'an 710069 Shaanxi China
| | - Tiezheng Miao
- School of Chemical Engineering, Northwest University Xi'an 710069 Shaanxi China
| | - Xingqiang Lü
- School of Chemical Engineering, Northwest University Xi'an 710069 Shaanxi China
| | - Hongshan He
- Department of Chemistry, Eastern Illinois University Charleston IL 61920 USA
| | - Li Liu
- Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules, School of Chemistry and Chemical Engineering, Hubei University Wuhan 430062 China
| | - Wai-Yeung Wong
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University Hung Hom Hong Kong China
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161
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Tang T, Guo W, Xu Y, Xu D. Synthesis and characterization of novel hyperbranched fluorescent polymers that can be precisely used for metal ion detection and quantification. J Appl Polym Sci 2020. [DOI: 10.1002/app.48933] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Tengxuan Tang
- College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou Jiangsu 215123 China
| | - Wenbo Guo
- College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou Jiangsu 215123 China
| | - Ying Xu
- Testing and Analysis CenterSoochow University Suzhou 215123 China
| | - Dongmei Xu
- College of Chemistry, Chemical Engineering and Materials ScienceSoochow University Suzhou Jiangsu 215123 China
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162
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Förster C, Heinze K. Photophysics and photochemistry with Earth-abundant metals - fundamentals and concepts. Chem Soc Rev 2020; 49:1057-1070. [PMID: 32025671 DOI: 10.1039/c9cs00573k] [Citation(s) in RCA: 180] [Impact Index Per Article: 45.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Recent exciting developments in the area of mononuclear photoactive complexes with Earth-abundant metal ions (Cu, Zr, Fe, Cr) for potential eco-friendly applications in (phosphorescent) organic light emitting diodes, in imaging and sensing systems, in dye-sensitized solar cells and as photocatalysts are presented. Challenges, in particular the extension of excited state lifetimes, and recent conceptual breakthroughs in substituting precious and rare-Earth metal ions (e.g. Ru, Ir, Pt, Au, Eu) in these applications by abundant ions are outlined with selected examples. Relevant fundamentals of photophysics and photochemistry are discussed first, followed by conceptual and instructive case studies.
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Affiliation(s)
- Christoph Förster
- Department of Chemistry, Johannes Gutenberg University of Mainz, Duesbergweg 10-14, D-55128, Mainz, Germany.
| | - Katja Heinze
- Department of Chemistry, Johannes Gutenberg University of Mainz, Duesbergweg 10-14, D-55128, Mainz, Germany.
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163
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Rozhkov AV, Eliseeva SN, Baykov SV, Zelenkov LE, Goriachiy DO, Taydakov IV. Copper( i) ionic complexes based on imidazo[4,5- f][1,10]phenanthrolin diimine chelating ligands: crystal structures, and photo- and electroluminescence properties. NEW J CHEM 2020. [DOI: 10.1039/c9nj05109k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Four new luminescent diimine Cu(i) complexes have been synthesized and applied in organic light-emitting diodes.
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Affiliation(s)
- Anton V. Rozhkov
- Institute of Chemistry
- Saint Petersburg State University
- 199034 Saint Petersburg
- Russian Federation
| | - Svetlana N. Eliseeva
- Institute of Chemistry
- Saint Petersburg State University
- 199034 Saint Petersburg
- Russian Federation
| | - Sergey V. Baykov
- Institute of Chemistry
- Saint Petersburg State University
- 199034 Saint Petersburg
- Russian Federation
| | - Lev E. Zelenkov
- Institute of Chemistry
- Saint Petersburg State University
- 199034 Saint Petersburg
- Russian Federation
| | - Dmitry O. Goriachiy
- P. N. Lebedev Physical Institute of the Russian Academy of Science
- 119991 Moscow
- Russian Federation
| | - Ilya V. Taydakov
- P. N. Lebedev Physical Institute of the Russian Academy of Science
- 119991 Moscow
- Russian Federation
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164
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Evariste S, Khalil AM, Kerneis S, Xu C, Calvez G, Costuas K, Lescop C. Luminescent vapochromic single crystal to single crystal transition in one-dimensional coordination polymer featuring the first Cu(i) dimer bridged by an aqua ligand. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00691b] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Vapochromic luminescence caused by included solvent mobility is observed in reversible single-crystal to single-crystal (SC–SC) transitions in a one-dimensional coordination polymer bearing the first reported water molecule bridging two Cu(i) ions.
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Affiliation(s)
- Sloane Evariste
- Univ Rennes
- INSA Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F-35000 Rennes
| | - Ali Moustafa Khalil
- Univ Rennes
- INSA Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F-35000 Rennes
| | - Sebastien Kerneis
- Univ Rennes
- INSA Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F-35000 Rennes
| | - Chendong Xu
- Univ Rennes
- INSA Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F-35000 Rennes
| | - Guillaume Calvez
- Univ Rennes
- INSA Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F-35000 Rennes
| | - Karine Costuas
- Univ Rennes
- INSA Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F-35000 Rennes
| | - Christophe Lescop
- Univ Rennes
- INSA Rennes
- CNRS
- ISCR (Institut des Sciences Chimiques de Rennes) – UMR 6226
- F-35000 Rennes
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165
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Keller S, Prescimone A, La Placa MG, Junquera-Hernández JM, Bolink HJ, Constable EC, Sessolo M, Ortí E, Housecroft CE. The shiny side of copper: bringing copper(i) light-emitting electrochemical cells closer to application. RSC Adv 2020; 10:22631-22644. [PMID: 35514545 PMCID: PMC9054616 DOI: 10.1039/d0ra03824e] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 05/31/2020] [Indexed: 01/06/2023] Open
Abstract
Heteroleptic [Cu(P^P)(N^N)][PF6] complexes, where N^N is 5,5′-dimethyl-2,2′-bipyridine (5,5′-Me2bpy), 4,5,6-trimethyl-2,2′-bipyridine (4,5,6-Me3bpy), 6-(tert-butyl)-2,2′-bipyridine (6-tBubpy) and 2-ethyl-1,10-phenanthroline (2-Etphen) and P^P is either bis(2-(diphenylphosphino)phenyl)ether (POP, PIN [oxydi(2,1-phenylene)]bis(diphenylphosphane)) or 4,5-bis(diphenylphosphino)-9,9-dimethylxanthene (xantphos, PIN (9,9-dimethyl-9H-xanthene-4,5-diyl)bis(diphenylphosphane)) have been synthesized and their NMR spectroscopic, mass spectrometric, structural, electrochemical and photophysical properties were investigated. The single-crystal structures of [Cu(POP)(5,5′-Me2bpy)][PF6], [Cu(xantphos)(5,5′-Me2bpy)][PF6], [Cu(POP)(6-tBubpy)][PF6], [Cu(POP)(4,5,6-Me3bpy)][PF6]·1.5Et2O, [Cu(xantphos)(4,5,6-Me3bpy)][PF6]·2.33CH2Cl2, [Cu(POP)(2-Etphen)][PF6] and [Cu(xantphos)(2-Etphen)][PF6] are described. While alkyl substituents in general exhibit electron-donating properties, variation in the nature and substitution-position of the alkyl group in the N^N chelate leads to different effects in the photophysical properties of the [Cu(P^P)(N^N)][PF6] complexes. In the solid state, the complexes are yellow to green emitters with emission maxima between 518 and 602 nm, and photoluminescence quantum yields (PLQYs) ranging from 1.1 to 58.8%. All complexes show thermally activated delayed fluorescence (TADF). The complexes were employed in the active layer of light-emitting electrochemical cells (LECs). The device performance properties are among the best reported for copper-based LECs, with maximum luminance values of up to 462 cd m−2 and device half-lifetimes of up to 98 hours. Heteroleptic copper(i) complexes with bisphosphanes and astutely tuned N^N chelating ligands as emitters give bright LECs with record-breaking stability.![]()
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Affiliation(s)
- Sarah Keller
- Department of Chemistry
- University of Basel
- CH-4058 Basel
- Switzerland
| | | | | | | | - Henk J. Bolink
- Instituto de Ciencia Molecular
- Universidad de Valencia
- 46980 Paterna
- Spain
| | | | - Michele Sessolo
- Instituto de Ciencia Molecular
- Universidad de Valencia
- 46980 Paterna
- Spain
| | - Enrique Ortí
- Instituto de Ciencia Molecular
- Universidad de Valencia
- 46980 Paterna
- Spain
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166
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Olaru M, Rychagova E, Ketkov S, Shynkarenko Y, Yakunin S, Kovalenko MV, Yablonskiy A, Andreev B, Kleemiss F, Beckmann J, Vogt M. A Small Cationic Organo-Copper Cluster as Thermally Robust Highly Photo- and Electroluminescent Material. J Am Chem Soc 2019; 142:373-381. [PMID: 31814392 DOI: 10.1021/jacs.9b10829] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Organic light-emitting diodes (OLEDs) are revolutionizing display applications. In this aspect, luminescent complexes of precious metals such as iridium, platinum, or ruthenium still playing a significant role. Emissive compounds of earth-abundant copper with equivalent performance are desired for practical, large-scale applications such as solid-state lighting and displays. Copper(I)-based emitters are well-known to suffer from weak spin-orbit coupling and a high reorganization energy upon photoexcitation. Here we report a cationic organo-copper cluster [Cu4(PCP)3]+ (PCP = 2,6-(PPh2)2C6H3) that features suppressed nonradiative decays, giving rise to a robust narrow-band green luminophore with a photoluminescent (PL) efficiency up to 93%. PL decay kinetics corroborated by DFT calculations reveal a complex emission mechanism involving contributions of both thermally activated delayed fluorescence and phosphorescence. This robust compound was solution-processed into a thin film in prototype OLEDs with external quantum efficiency up to 11% and a narrow emission bandwidth (65 nm fwhm).
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Affiliation(s)
- Marian Olaru
- Institut für Anorganische Chemie und Kristallographie , Universität Bremen , Leobener Straße 7 , 28359 Bremen , Germany
| | - Elena Rychagova
- G. A. Razuvaev Institute of Organometallic Chemistry , Russian Academy of Sciences , Tropinina, 49 , Nizhny Novgorod , 603950 , Russian Federation
| | - Sergey Ketkov
- G. A. Razuvaev Institute of Organometallic Chemistry , Russian Academy of Sciences , Tropinina, 49 , Nizhny Novgorod , 603950 , Russian Federation
| | - Yevhen Shynkarenko
- Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Bioscience , ETH Zürich , Vladimir Prelog Weg 1 , CH-8093 Zürich , Switzerland.,Laboratory for Thin Films and Photovoltaics , Empa-Swiss Federal Laboratories for Materials Science and Technology , Überlandstrasse 129 , CH-8600 Dübendorf , Switzerland
| | - Sergii Yakunin
- Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Bioscience , ETH Zürich , Vladimir Prelog Weg 1 , CH-8093 Zürich , Switzerland.,Laboratory for Thin Films and Photovoltaics , Empa-Swiss Federal Laboratories for Materials Science and Technology , Überlandstrasse 129 , CH-8600 Dübendorf , Switzerland
| | - Maksym V Kovalenko
- Laboratory of Inorganic Chemistry, Department of Chemistry and Applied Bioscience , ETH Zürich , Vladimir Prelog Weg 1 , CH-8093 Zürich , Switzerland.,Laboratory for Thin Films and Photovoltaics , Empa-Swiss Federal Laboratories for Materials Science and Technology , Überlandstrasse 129 , CH-8600 Dübendorf , Switzerland
| | - Artem Yablonskiy
- Institute for Physics of Microstructures , Russian Academy of Sciences , 7 ul. Akademicheskaya , Nizhny Novgorod , 603950 , Russian Federation
| | - Boris Andreev
- Institute for Physics of Microstructures , Russian Academy of Sciences , 7 ul. Akademicheskaya , Nizhny Novgorod , 603950 , Russian Federation
| | - Florian Kleemiss
- Institut für Anorganische Chemie und Kristallographie , Universität Bremen , Leobener Straße 7 , 28359 Bremen , Germany
| | - Jens Beckmann
- Institut für Anorganische Chemie und Kristallographie , Universität Bremen , Leobener Straße 7 , 28359 Bremen , Germany
| | - Matthias Vogt
- Institut für Anorganische Chemie und Kristallographie , Universität Bremen , Leobener Straße 7 , 28359 Bremen , Germany
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167
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Obydennov DL, Khammatova LR, Steben'kov VD, Sosnovskikh VY. Synthesis of novel polycarbonyl Schiff bases by ring-opening reaction of ethyl 5-acyl-4-pyrone-2-carboxylates with primary mono- and diamines. RSC Adv 2019; 9:40072-40083. [PMID: 35541399 PMCID: PMC9076191 DOI: 10.1039/c9ra07653k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Accepted: 11/19/2019] [Indexed: 12/30/2022] Open
Abstract
An approach for the introduction of the tricarbonyl moiety into aromatic, heterocyclic, and aliphatic amines with the use of acylpyrones has been developed for the synthesis and the design of novel polycarbonyl Schiff base ligands, including salphen structures. This Michael addition–ring-opening reaction proceeds under mild conditions (stirring at 0–20 °C) via the attack at the C-6 position of the pyrone ring in good to high yields (up to 99%) with excellent selectivity. The products can be easily isolated by crystallization without the use of chromatography. The scope of the reaction, tautomeric equilibrium of open-chain products, and their cyclization into pyridone structures were investigated. An approach for the introduction of the tricarbonyl moiety into various amines has been developed based on acylpyrones.![]()
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Affiliation(s)
- D L Obydennov
- Institute of Natural Sciences and Mathematics, Ural Federal University 51 Lenina Ave. 620000 Ekaterinburg Russian Federation
| | - L R Khammatova
- Institute of Natural Sciences and Mathematics, Ural Federal University 51 Lenina Ave. 620000 Ekaterinburg Russian Federation
| | - V D Steben'kov
- Institute of Natural Sciences and Mathematics, Ural Federal University 51 Lenina Ave. 620000 Ekaterinburg Russian Federation
| | - V Y Sosnovskikh
- Institute of Natural Sciences and Mathematics, Ural Federal University 51 Lenina Ave. 620000 Ekaterinburg Russian Federation
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168
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Stroscio GD, Ribson RD, Hadt RG. Quantifying Entatic States in Photophysical Processes: Applications to Copper Photosensitizers. Inorg Chem 2019; 58:16800-16817. [DOI: 10.1021/acs.inorgchem.9b02976] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gautam D. Stroscio
- Division of Chemistry and Chemical Engineering, Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125, United States
| | - Ryan D. Ribson
- Division of Chemistry and Chemical Engineering, Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125, United States
| | - Ryan G. Hadt
- Division of Chemistry and Chemical Engineering, Arthur Amos Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, California 91125, United States
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169
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Fedorchuk AA, Slyvka Y, Kinzhybalo V, Kityk I, Jędryka J, Ozga K, Mys`kiv M. Copper(I) π-coordination compounds with allyl derivatives of disubstituted pseudothiohydantoin: synthesis, structure investigation and nonlinear optical features. J COORD CHEM 2019. [DOI: 10.1080/00958972.2019.1687891] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Andrii A. Fedorchuk
- Department of Inorganic Chemistry, Ivan Franko National University of Lviv, Lviv, Ukraine
| | - Yurii Slyvka
- Department of Inorganic Chemistry, Ivan Franko National University of Lviv, Lviv, Ukraine
| | - Vasyl Kinzhybalo
- Institute of Low Temperature and Structure Research, Wrocław, Poland
| | - Iwan Kityk
- Faculty of Electrical Engineering, Institute of Optoelectronics and Measuring Systems, Częstochowa University of Technology, Częstochowa, Poland
| | - Jarosław Jędryka
- Faculty of Electrical Engineering, Institute of Optoelectronics and Measuring Systems, Częstochowa University of Technology, Częstochowa, Poland
| | - Katarzyna Ozga
- Faculty of Electrical Engineering, Institute of Optoelectronics and Measuring Systems, Częstochowa University of Technology, Częstochowa, Poland
| | - Marian Mys`kiv
- Department of Inorganic Chemistry, Ivan Franko National University of Lviv, Lviv, Ukraine
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170
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Romanov AS, Jones STE, Gu Q, Conaghan PJ, Drummond BH, Feng J, Chotard F, Buizza L, Foley M, Linnolahti M, Credgington D, Bochmann M. Carbene metal amide photoemitters: tailoring conformationally flexible amides for full color range emissions including white-emitting OLED. Chem Sci 2019; 11:435-446. [PMID: 32190264 PMCID: PMC7067249 DOI: 10.1039/c9sc04589a] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 11/12/2019] [Indexed: 12/11/2022] Open
Abstract
Conformationally flexible "Carbene-Metal-Amide" (CMA) complexes of copper and gold have been developed based on a combination of sterically hindered cyclic (alkyl)(amino)carbene (CAAC) and 6- and 7-ring heterocyclic amide ligands. These complexes show photoemissions across the visible spectrum with PL quantum yields of up to 89% in solution and 83% in host-guest films. Single crystal X-ray diffraction and photoluminescence (PL) studies combined with DFT calculations indicate the important role of ring structure and conformational flexibility of the amide ligands. Time-resolved PL shows efficient delayed emission with sub-microsecond to microsecond excited state lifetimes at room temperature, with radiative rates exceeding 106 s-1. Yellow organic light-emitting diodes (OLEDs) based on a 7-ring gold amide were fabricated by thermal vapor deposition, while the sky-blue to warm-white mechanochromic behavior of the gold phenothiazine-5,5-dioxide complex enabled fabrication of the first CMA-based white light-emitting OLED.
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Affiliation(s)
- Alexander S Romanov
- School of Chemistry , University of East Anglia , Norwich Research Park , Norwich , NR4 7TJ , UK . ;
| | - Saul T E Jones
- Department of Physics , Cavendish Laboratory , Cambridge University , Cambridge CB3 0HF , UK .
| | - Qinying Gu
- Department of Physics , Cavendish Laboratory , Cambridge University , Cambridge CB3 0HF , UK .
| | - Patrick J Conaghan
- Department of Physics , Cavendish Laboratory , Cambridge University , Cambridge CB3 0HF , UK .
| | - Bluebell H Drummond
- Department of Physics , Cavendish Laboratory , Cambridge University , Cambridge CB3 0HF , UK .
| | - Jiale Feng
- Department of Physics , Cavendish Laboratory , Cambridge University , Cambridge CB3 0HF , UK .
| | - Florian Chotard
- School of Chemistry , University of East Anglia , Norwich Research Park , Norwich , NR4 7TJ , UK . ;
| | - Leonardo Buizza
- Department of Physics , Cavendish Laboratory , Cambridge University , Cambridge CB3 0HF , UK .
| | - Morgan Foley
- Department of Physics , Cavendish Laboratory , Cambridge University , Cambridge CB3 0HF , UK .
| | - Mikko Linnolahti
- Department of Chemistry , University of Eastern Finland , Joensuu Campus , FI-80101 Joensuu , Finland .
| | - Dan Credgington
- Department of Physics , Cavendish Laboratory , Cambridge University , Cambridge CB3 0HF , UK .
| | - Manfred Bochmann
- School of Chemistry , University of East Anglia , Norwich Research Park , Norwich , NR4 7TJ , UK . ;
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171
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Keller S, Bantle M, Prescimone A, Constable EC, Housecroft CE. Hinged and Wide: A New P^P Ligand for Emissive [Cu(P^P)(N^N)][PF 6] Complexes. Molecules 2019; 24:E3934. [PMID: 31683579 PMCID: PMC6864541 DOI: 10.3390/molecules24213934] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 10/29/2019] [Accepted: 10/29/2019] [Indexed: 12/02/2022] Open
Abstract
Heteroleptic [Cu(BIPHEP)(N^N)][PF6] complexes (BIPHEP = 1,1'-biphenyl-2,2'-diylbis(diphenylphosphane)), in which N^N is 2,2'-bipyridine (bpy), 6-methyl-2,2'-bipyridine (6-Mebpy), 6-ethyl-2,2'-bipyridine (6-Etbpy), or 5,5'-dimethyl-2,2'-bipyridine (5,5'-Me2bpy), have been synthesized and characterized using multinuclear NMR spectroscopies and electrospray ionization mass spectrometry. The single crystal structures of [Cu(BIPHEP)(bpy)][PF6]∙CH2Cl2, [Cu(BIPHEP)(5,5'-Me2bpy)][PF6]∙CH2Cl2, [Cu(BIPHEP)(6-Mebpy)][PF6]∙Et2O∙0.5H2O and [Cu(BIPHEP)(6-Etbpy)][PF6] confirm distorted tetrahedral {Cu(P^P)(N^N)} coordination environments. Each compound shows a quasi-reversible Cu+/Cu2+ process. In deaerated solution, the compounds are weak emitters. Powdered samples are yellow emitters (λemmax in the range 558-583 nm) and [Cu(BIPHEP)(5,5'-Me2bpy)][PF6] exhibits the highest photoluminescence quantum yield (PLQY = 14%). On cooling to 77 K (frozen 2-methyloxolane), the emission maxima are red-shifted and the excited state lifetimes increase from τ1/2 < 8 μs, to τ1/2 values of up to 53 μs, consistent with the compounds with N^N = 6-Mebpy, 6-Etbpy and 5,5'-Me2bpy exhibiting thermally activated delayed fluorescence (TADF).
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Affiliation(s)
- Sarah Keller
- Department of Chemistry, University of Basel, BPR 1096, Mattenstrasse 24a, CH-4058 Basel, Switzerland.
- Chimie ParisTech, PSL University CNRS, Institute of Chemistry for Life and Health Sciences, Laboratory for Inorganic Chemical Biology, 11 rue Pierre et Marie Curie, F-75005 Paris, France.
| | - Matthias Bantle
- Department of Chemistry, University of Basel, BPR 1096, Mattenstrasse 24a, CH-4058 Basel, Switzerland.
| | - Alessandro Prescimone
- Department of Chemistry, University of Basel, BPR 1096, Mattenstrasse 24a, CH-4058 Basel, Switzerland.
| | - Edwin C Constable
- Department of Chemistry, University of Basel, BPR 1096, Mattenstrasse 24a, CH-4058 Basel, Switzerland.
| | - Catherine E Housecroft
- Department of Chemistry, University of Basel, BPR 1096, Mattenstrasse 24a, CH-4058 Basel, Switzerland.
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172
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Chen XW, Yuan HL, He LH, Chen JL, Liu SJ, Wen HR, Zhou G, Wang JY, Wong WY. A Sublimable Dinuclear Cuprous Complex Showing Selective Luminescence Vapochromism in the Crystalline State. Inorg Chem 2019; 58:14478-14489. [DOI: 10.1021/acs.inorgchem.9b01972] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Xing-Wei Chen
- School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People’s Republic of China
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, People’s Republic of China
| | - Hua-Li Yuan
- School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People’s Republic of China
| | - Li-Hua He
- School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People’s Republic of China
| | - Jing-Lin Chen
- School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People’s Republic of China
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, People’s Republic of China
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People’s Republic of China
| | - Sui-Jun Liu
- School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People’s Republic of China
| | - He-Rui Wen
- School of Chemistry and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, People’s Republic of China
| | - Guijiang Zhou
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, State Key Laboratory for Mechanical Behavior of Materials, Department of Chemistry, Faculty of Science, Xi’an Jiaotong University, Xi’an 710049, People’s Republic of China
| | - Jin-Yun Wang
- State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, People’s Republic of China
| | - Wai-Yeung Wong
- Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, Hung Hom, Hong Kong, People’s Republic of China
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173
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Busch JM, Zink DM, Di Martino-Fumo P, Rehak FR, Boden P, Steiger S, Fuhr O, Nieger M, Klopper W, Gerhards M, Bräse S. Highly soluble fluorine containing Cu(i) AlkylPyrPhos TADF complexes. Dalton Trans 2019; 48:15687-15698. [PMID: 31524902 DOI: 10.1039/c9dt02447f] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Luminescent Cu(i) AlkylPyrPhos complexes with a butterfly-shaped Cu2I2 core and halogen containing ancillary ligands, with a special focus on fluorine, have been investigated in this study. These complexes show extremely high solubilities and a remarkable (photo)chemical stability in a series of solvents. A tunable emission resulting from thermally activated delayed fluorescence with high quantum yields was determined by luminescence and lifetime investigations in solvents and solids. Structures of the electronic ground states were analyzed by single crystal X-ray analysis. The structure of the lowest excited triplet state was determined by transient FTIR spectroscopy, in combination with quantum chemical calculations. With the obtained range of compounds we address the key requirement for the production of organic light emitting diodes based on solution processing.
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Affiliation(s)
- Jasmin M Busch
- Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), Karlsruhe, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany.
| | - Daniel M Zink
- Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), Karlsruhe, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany.
| | - Patrick Di Martino-Fumo
- Chemistry Department, TU Kaiserslautern and Research Center Optimas, Erwin-Schrödinger-Straße 52, 67663 Kaiserslautern, Germany.
| | - Florian R Rehak
- Institute of Physical Chemistry - Theoretical Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany.
| | - Pit Boden
- Chemistry Department, TU Kaiserslautern and Research Center Optimas, Erwin-Schrödinger-Straße 52, 67663 Kaiserslautern, Germany.
| | - Sophie Steiger
- Chemistry Department, TU Kaiserslautern and Research Center Optimas, Erwin-Schrödinger-Straße 52, 67663 Kaiserslautern, Germany.
| | - Olaf Fuhr
- Karlsruhe Institute of Nanotechnology (INT) and Karlsruhe Nano-Micro Facility (KNMF), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.
| | - Martin Nieger
- Department of Chemistry, University of Helsinki, P.O. Box 55 (A.I. Virtasen aukio 1), 00014 Helsinki, Finland.
| | - Wim Klopper
- Institute of Physical Chemistry - Theoretical Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany.
| | - Markus Gerhards
- Chemistry Department, TU Kaiserslautern and Research Center Optimas, Erwin-Schrödinger-Straße 52, 67663 Kaiserslautern, Germany.
| | - Stefan Bräse
- Institute of Organic Chemistry (IOC), Karlsruhe Institute of Technology (KIT), Karlsruhe, Fritz-Haber-Weg 6, 76131 Karlsruhe, Germany. and Institute of Toxicology and Genetics (ITG), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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174
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Chan KT, Lam TL, Yu D, Du L, Phillips DL, Kwong CL, Tong GSM, Cheng G, Che CM. Strongly Luminescent Tungsten Emitters with Emission Quantum Yields of up to 84 %: TADF and High-Efficiency Molecular Tungsten OLEDs. Angew Chem Int Ed Engl 2019; 58:14896-14900. [PMID: 31321857 DOI: 10.1002/anie.201906698] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Indexed: 11/10/2022]
Abstract
Metal-TADF (thermally activated delayed fluorescence) emitters hold promise in the development of next generation light-emitting materials for display and lighting applications, examples of which are, however, largely confined to CuI and recently AuI , AgI , and AuIII emitters. Herein is described the design strategy for an unprecedented type of metal-TADF emitter based on inexpensive tungsten metal chelated with Schiff base ligand that exhibit high emission quantum yields of up to 56 % in solutions and 84 % in thin-film (5 wt % in 1,3-bis(N-carbazolyl)benzene, mCP) at room temperature. Femtosecond time-resolved emission (fs-TRE) spectroscopy and DFT calculations were undertaken to decipher the TADF properties. Solution-processed OLEDs fabricated with the W-TADF emitter demonstrated external quantum efficiency (EQE) and luminance of up to 15.6 % and 16890 cd m-2 , respectively.
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Affiliation(s)
- Kaai-Tung Chan
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
| | - Tsz-Lung Lam
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
| | - Daohong Yu
- Department of Chemistry, Southern University of Science and Technology of China, Shenzhen, Guangdong, 518055, China
| | - Lili Du
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
| | - David Lee Phillips
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
| | - Chun-Lam Kwong
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
| | - Glenna So Ming Tong
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China
| | - Gang Cheng
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China.,HKU Shenzhen Institute of Research and Innovation, Shenzhen, Guangdong, 518053, China
| | - Chi-Ming Che
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong SAR, China.,Department of Chemistry, Southern University of Science and Technology of China, Shenzhen, Guangdong, 518055, China.,HKU Shenzhen Institute of Research and Innovation, Shenzhen, Guangdong, 518053, China
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175
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Chan K, Lam T, Yu D, Du L, Phillips DL, Kwong C, Tong GSM, Cheng G, Che C. Strongly Luminescent Tungsten Emitters with Emission Quantum Yields of up to 84 %: TADF and High‐Efficiency Molecular Tungsten OLEDs. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201906698] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Kaai‐Tung Chan
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong SAR China
| | - Tsz‐Lung Lam
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong SAR China
| | - Daohong Yu
- Department of Chemistry Southern University of Science and Technology of China Shenzhen Guangdong 518055 China
| | - Lili Du
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong SAR China
| | - David Lee Phillips
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong SAR China
| | - Chun‐Lam Kwong
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong SAR China
| | - Glenna So Ming Tong
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong SAR China
| | - Gang Cheng
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong SAR China
- HKU Shenzhen Institute of Research and Innovation Shenzhen Guangdong 518053 China
| | - Chi‐Ming Che
- State Key Laboratory of Synthetic Chemistry, HKU-CAS Joint Laboratory on New Materials Department of Chemistry The University of Hong Kong Pokfulam Road Hong Kong SAR China
- Department of Chemistry Southern University of Science and Technology of China Shenzhen Guangdong 518055 China
- HKU Shenzhen Institute of Research and Innovation Shenzhen Guangdong 518053 China
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176
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Chotard F, Romanov AS, Hughes DL, Linnolahti M, Bochmann M. Zwitterionic Mixed-Carbene Coinage Metal Complexes: Synthesis, Structures, and Photophysical Studies. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201900573] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Florian Chotard
- School of Chemistry; University of East Anglia; Norwich NR4 7TJ UK
| | | | - David L. Hughes
- School of Chemistry; University of East Anglia; Norwich NR4 7TJ UK
| | - Mikko Linnolahti
- Department of Chemistry; University of Eastern Finland; Joensuu Campus FI-80101 Joensuu Finland
| | - Manfred Bochmann
- School of Chemistry; University of East Anglia; Norwich NR4 7TJ UK
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177
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Brown CM, Li C, Carta V, Li W, Xu Z, Stroppa PHF, Samuel IDW, Zysman-Colman E, Wolf MO. Influence of Sulfur Oxidation State and Substituents on Sulfur-Bridged Luminescent Copper(I) Complexes Showing Thermally Activated Delayed Fluorescence. Inorg Chem 2019; 58:7156-7168. [DOI: 10.1021/acs.inorgchem.8b03500] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Christopher M. Brown
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Chenfei Li
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews, Fife KY16 9ST, U.K
| | - Veronica Carta
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Wenbo Li
- Organic Semiconductor Centre, SUPA School of Physics and Astronomy, University of St. Andrews, St. Andrews, Fife KY16 9SS, U.K
| | - Zhen Xu
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
| | - Pedro Henrique Fazza Stroppa
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews, Fife KY16 9ST, U.K
| | - Ifor D. W. Samuel
- Organic Semiconductor Centre, SUPA School of Physics and Astronomy, University of St. Andrews, St. Andrews, Fife KY16 9SS, U.K
| | - Eli Zysman-Colman
- Organic Semiconductor Centre, EaStCHEM School of Chemistry, University of St. Andrews, St. Andrews, Fife KY16 9ST, U.K
| | - Michael O. Wolf
- Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada
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178
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Castañeda R, Harriman KLM, Wong JWL, Gabidullin B, Murugesu M, Brusso JL. Rational Design of Tetranuclear Complexes Employing
N
‐Imidoylamidine Based Ligands. Eur J Inorg Chem 2019. [DOI: 10.1002/ejic.201801412] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Raúl Castañeda
- Department of Chemistry and Biomolecular Sciences University of Ottawa 10 Marie Curie Ottawa Ontario K1N 6N5 Canada
| | - Katie L. M. Harriman
- Department of Chemistry and Biomolecular Sciences University of Ottawa 10 Marie Curie Ottawa Ontario K1N 6N5 Canada
| | - Joanne W. L. Wong
- Institut für Anorganische Chemie Georg‐August‐Universität Göttingen Tammannstraße 4 37077 Göttingen Germany
| | - Bulat Gabidullin
- Department of Chemistry and Biomolecular Sciences University of Ottawa 10 Marie Curie Ottawa Ontario K1N 6N5 Canada
| | - Muralee Murugesu
- Department of Chemistry and Biomolecular Sciences University of Ottawa 10 Marie Curie Ottawa Ontario K1N 6N5 Canada
| | - Jaclyn L. Brusso
- Department of Chemistry and Biomolecular Sciences University of Ottawa 10 Marie Curie Ottawa Ontario K1N 6N5 Canada
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179
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Free Exciton Absorptions and Quasi-reversible Redox Actions in Polypyrrole–Polyaniline–Zinc Oxide Nanocomposites as Electron Transporting Layer for Organic Light Emitting Diode and Electrode Material for Supercapacitors. J Inorg Organomet Polym Mater 2019. [DOI: 10.1007/s10904-018-1047-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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180
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Jia JH, Chen XL, Liao JZ, Liang D, Yang MX, Yu R, Lu CZ. Highly luminescent copper(i) halide complexes chelated with a tetradentate ligand (PNNP): synthesis, structure, photophysical properties and theoretical studies. Dalton Trans 2019; 48:1418-1426. [DOI: 10.1039/c8dt03452d] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Strongly emissive copper(i) halide complexes constructed from a new tetradentate chelating ligand and butterfly-shaped Cu2X2 cores are presented and systematically investigated.
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Affiliation(s)
- Ji-Hui Jia
- Key Laboratory of Design and Assembly of Functional Nanostructures
- and Fujian Key Laboratory of Nanomaterials
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
| | - Xu-Lin Chen
- Key Laboratory of Design and Assembly of Functional Nanostructures
- and Fujian Key Laboratory of Nanomaterials
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
| | - Jian-Zhen Liao
- Key Laboratory of Design and Assembly of Functional Nanostructures
- and Fujian Key Laboratory of Nanomaterials
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
| | - Dong Liang
- Xiamen Institute of Rare-earth Materials
- Haixi Institutes
- Chinese Academy of Sciences
- Xiamen 361021
- China
| | - Ming-Xue Yang
- Key Laboratory of Design and Assembly of Functional Nanostructures
- and Fujian Key Laboratory of Nanomaterials
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
| | - Rongmin Yu
- Key Laboratory of Design and Assembly of Functional Nanostructures
- and Fujian Key Laboratory of Nanomaterials
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
| | - Can-Zhong Lu
- Key Laboratory of Design and Assembly of Functional Nanostructures
- and Fujian Key Laboratory of Nanomaterials
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
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181
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Vacher A, Amar A, Camerel F, Molard Y, Latouche C, Roisnel T, Dorcet V, Boucekkine A, Akdas-Kiliç H, Achard M. Modulation of emission properties of phosphine-sulfonate ligand containing copper complexes: playing with solvato-, thermo-, and mechanochromism. Dalton Trans 2019; 48:2128-2134. [DOI: 10.1039/c8dt04502j] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of Cuprous and Cuprate(i) complexes have been selectively obtained by addition of solvents or metal salts.
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Affiliation(s)
- Antoine Vacher
- Univ Rennes
- Institut des Sciences Chimiques de Rennes—UMR 6226
- F-35000 Rennes
- France
| | - Anissa Amar
- Département de Chimie
- Faculté des Sciences
- Université Mouloud Mammeri
- Alger
- Algeria
| | - Franck Camerel
- Univ Rennes
- Institut des Sciences Chimiques de Rennes—UMR 6226
- F-35000 Rennes
- France
| | - Yann Molard
- Univ Rennes
- Institut des Sciences Chimiques de Rennes—UMR 6226
- F-35000 Rennes
- France
| | - Camille Latouche
- Institut des Matériaux Jean Rouxel (IMN)
- Université de Nantes
- CNRS
- 44322 Nantes
- France
| | - Thierry Roisnel
- Univ Rennes
- Institut des Sciences Chimiques de Rennes—UMR 6226
- F-35000 Rennes
- France
| | - Vincent Dorcet
- Univ Rennes
- Institut des Sciences Chimiques de Rennes—UMR 6226
- F-35000 Rennes
- France
| | - Abdou Boucekkine
- Univ Rennes
- Institut des Sciences Chimiques de Rennes—UMR 6226
- F-35000 Rennes
- France
| | - Huriye Akdas-Kiliç
- Univ Rennes
- Institut des Sciences Chimiques de Rennes—UMR 6226
- F-35000 Rennes
- France
| | - Mathieu Achard
- Univ Rennes
- Institut des Sciences Chimiques de Rennes—UMR 6226
- F-35000 Rennes
- France
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182
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Wang Y, Shi Y, Zou X, He Y, Wang X. Pyridylphosphine supported Ag(i) and Cu(i) complexes for detection of alcohols and nitriles via structural transformations from 1D to 0D. CrystEngComm 2019. [DOI: 10.1039/c9ce00943d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
One-dimensional chain Ag(i) and Cu(i) complexes exhibit vapochromic luminescence for the detection of alcohols and nitriles via structural transformations from 1D to 0D.
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Affiliation(s)
- Yue Wang
- College of Biological and Chemical Engineering
- Chongqing University of Education
- Chongqing 400067
- China
| | - Yongfang Shi
- Fujian Institute of Research on the Structure of Matter
- State Key Laboratory of Structural Chemistry
- Chinese Academy of Sciences
- Fuzhou 350002
- China
| | - Xiaochuan Zou
- College of Biological and Chemical Engineering
- Chongqing University of Education
- Chongqing 400067
- China
| | - Yucen He
- College of Biological and Chemical Engineering
- Chongqing University of Education
- Chongqing 400067
- China
| | - Xia Wang
- College of Biological and Chemical Engineering
- Chongqing University of Education
- Chongqing 400067
- China
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183
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Gattu R, Mondal S, Ali S, Khan AT. Iodine monobromide catalysed regioselective synthesis of 3-arylquinolines from α-aminoacetophenones and trans-β-nitrostyrenes. Org Biomol Chem 2019; 17:347-353. [DOI: 10.1039/c8ob02333f] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A simple and efficient method for regioselective synthesis of 3-arylquinolines is described from α-aminoacetophenones and trans-β-nitrostyrenes using 20 mol% iodine monobromide as a catalyst in acetonitrile solvent at 80 °C.
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Affiliation(s)
- Radhakrishna Gattu
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781 039
- India
| | - Santa Mondal
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781 039
- India
| | - Saghir Ali
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781 039
- India
| | - Abu T. Khan
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781 039
- India
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184
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Artem'ev AV, Ryzhikov MR, Berezin AS, Kolesnikov IE, Samsonenko DG, Bagryanskaya IY. Photoluminescence of Ag(i) complexes with a square-planar coordination geometry: the first observation. Inorg Chem Front 2019. [DOI: 10.1039/c9qi00657e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
First examples of square-planar Ag(i) complexes showing MLCT emission are reported. They demonstrate an interesting thermochromic luminescence with the nano- and microsecond lifetime components.
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Affiliation(s)
- Alexander V. Artem'ev
- Nikolaev Institute of Inorganic Chemistry
- Siberian Branch of Russian Academy of Sciences
- Novosibirsk 630090
- Russian Federation
- Novosibirsk State University
| | - Maxim R. Ryzhikov
- Nikolaev Institute of Inorganic Chemistry
- Siberian Branch of Russian Academy of Sciences
- Novosibirsk 630090
- Russian Federation
- Novosibirsk State University
| | - Alexey S. Berezin
- Nikolaev Institute of Inorganic Chemistry
- Siberian Branch of Russian Academy of Sciences
- Novosibirsk 630090
- Russian Federation
| | - Ilya E. Kolesnikov
- Center for Optical and Laser Materials Research
- Saint Petersburg State University
- Saint Petersburg 198504
- Russian Federation
| | - Denis G. Samsonenko
- Nikolaev Institute of Inorganic Chemistry
- Siberian Branch of Russian Academy of Sciences
- Novosibirsk 630090
- Russian Federation
- Novosibirsk State University
| | - Irina Yu. Bagryanskaya
- Novosibirsk State University
- Novosibirsk 630090
- Russian Federation
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry
- Siberian Branch of Russian Academy of Sciences
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185
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Mahato S, Mukherjee A, Santra S, Zyryanov GV, Majee A. Facile synthesis of substituted quinolines by iron(iii)-catalyzed cascade reaction between anilines, aldehydes and nitroalkanes. Org Biomol Chem 2019; 17:7907-7917. [DOI: 10.1039/c9ob01294j] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A library of substituted quinolines has been synthesized by the reaction of aldehydes, anilines and nitroalkanes using a catalytic amount of Fe(iii) chloride.
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Affiliation(s)
- Sachinta Mahato
- Department of Chemistry
- Visva-Bharati (A Central University)
- Santiniketan 731235
- India
| | - Anindita Mukherjee
- Department of Organic and Biomolecular Chemistry
- Chemical Engineering Institute
- Ural Federal University
- Yekaterinburg
- Russian Federation
| | - Sougata Santra
- Department of Organic and Biomolecular Chemistry
- Chemical Engineering Institute
- Ural Federal University
- Yekaterinburg
- Russian Federation
| | - Grigory V. Zyryanov
- Department of Organic and Biomolecular Chemistry
- Chemical Engineering Institute
- Ural Federal University
- Yekaterinburg
- Russian Federation
| | - Adinath Majee
- Department of Chemistry
- Visva-Bharati (A Central University)
- Santiniketan 731235
- India
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186
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Artem'ev AV, Doronina EP, Rakhmanova MI, Tarasova OA, Bagryanskaya IY, Nedolya NA. Chemoselective mechanochemical route toward a bright TADF-emitting CuI-based coordination polymer. Inorg Chem Front 2019. [DOI: 10.1039/c8qi01302k] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a simple and effective mechanochemical synthesis of a strongly-emissive TADF-material based on a CuI-coordination polymer that is unobtainable through traditional wet methods.
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Affiliation(s)
- Alexander V. Artem'ev
- Nikolaev Institute of Inorganic Chemistry
- Siberian Branch of Russian Academy of Sciences
- Novosibirsk 630090
- Russian Federation
- Novosibirsk State University
| | - Evgeniya P. Doronina
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy of Sciences
- 664033 Irkutsk
- Russian Federation
| | - Mariana I. Rakhmanova
- Nikolaev Institute of Inorganic Chemistry
- Siberian Branch of Russian Academy of Sciences
- Novosibirsk 630090
- Russian Federation
- Novosibirsk State University
| | - Olga A. Tarasova
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy of Sciences
- 664033 Irkutsk
- Russian Federation
| | - Irina Yu. Bagryanskaya
- Novosibirsk State University
- Novosibirsk 630090
- Russian Federation
- N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry
- Siberian Branch of Russian Academy of Sciences
| | - Nina A. Nedolya
- A. E. Favorsky Irkutsk Institute of Chemistry
- Siberian Branch of the Russian Academy of Sciences
- 664033 Irkutsk
- Russian Federation
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187
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Brunner F, Babaei A, Pertegás A, Junquera-Hernández JM, Prescimone A, Constable EC, Bolink HJ, Sessolo M, Ortí E, Housecroft CE. Phosphane tuning in heteroleptic [Cu(N^N)(P^P)]+ complexes for light-emitting electrochemical cells. Dalton Trans 2019; 48:446-460. [DOI: 10.1039/c8dt03827a] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The effects on photo-and electroluminescent properties of structurally modifying the bisphosphane in [Cu(N^N)(P^P)]+ complexes (N^N = bpy, 6-Mebpy, 6,6′-Me2bpy) are described.
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Affiliation(s)
- Fabian Brunner
- Department of Chemistry
- University of Basel
- CH-4056 Basel
- Switzerland
| | - Azin Babaei
- Instituto de Ciencia Molecular
- Universidad de Valencia
- 46980 Paterna
- Spain
| | - Antonio Pertegás
- Instituto de Ciencia Molecular
- Universidad de Valencia
- 46980 Paterna
- Spain
| | | | | | | | - Henk J. Bolink
- Instituto de Ciencia Molecular
- Universidad de Valencia
- 46980 Paterna
- Spain
| | - Michele Sessolo
- Instituto de Ciencia Molecular
- Universidad de Valencia
- 46980 Paterna
- Spain
| | - Enrique Ortí
- Instituto de Ciencia Molecular
- Universidad de Valencia
- 46980 Paterna
- Spain
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188
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Hockin BM, Li C, Robertson N, Zysman-Colman E. Photoredox catalysts based on earth-abundant metal complexes. Catal Sci Technol 2019. [DOI: 10.1039/c8cy02336k] [Citation(s) in RCA: 147] [Impact Index Per Article: 29.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Visible light photoredox catalysis has exploded into the consciousness of the synthetic chemist. We critically review Earth-abundant metal complexes photocatalysts including Cu(i), Zn(ii), Ni(0), V(v), Zr(iv), W(0), W(vi), Mo(0), Cr(iii), Co(iii) and Fe(ii).
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Affiliation(s)
- Bryony M. Hockin
- Organic Semiconductor Centre
- EaStCHEM School of Chemistry
- University of St Andrews
- Fife
- UK
| | - Chenfei Li
- Organic Semiconductor Centre
- EaStCHEM School of Chemistry
- University of St Andrews
- Fife
- UK
| | - Neil Robertson
- EaStCHEM School of Chemistry
- University of Edinburgh
- Edinburgh
- UK
| | - Eli Zysman-Colman
- Organic Semiconductor Centre
- EaStCHEM School of Chemistry
- University of St Andrews
- Fife
- UK
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189
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Kjær KS, Kaul N, Prakash O, Chábera P, Rosemann NW, Honarfar A, Gordivska O, Fredin LA, Bergquist KE, Häggström L, Ericsson T, Lindh L, Yartsev A, Styring S, Huang P, Uhlig J, Bendix J, Strand D, Sundström V, Persson P, Lomoth R, Wärnmark K. Luminescence and reactivity of a charge-transfer excited iron complex with nanosecond lifetime. Science 2018; 363:249-253. [DOI: 10.1126/science.aau7160] [Citation(s) in RCA: 167] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2018] [Accepted: 11/14/2018] [Indexed: 01/04/2023]
Abstract
Iron’s abundance and rich coordination chemistry are potentially appealing features for photochemical applications. However, the photoexcitable charge-transfer states of most iron complexes are limited by picosecond or subpicosecond deactivation through low-lying metal-centered states, resulting in inefficient electron-transfer reactivity and complete lack of photoluminescence. In this study, we show that octahedral coordination of iron(III) by two mono-anionic facialtris-carbene ligands can markedly suppress such deactivation. The resulting complex [Fe(phtmeimb)2]+, where phtmeimb is {phenyl[tris(3-methylimidazol-1-ylidene)]borate}−, exhibits strong, visible, room temperature photoluminescence with a 2.0-nanosecond lifetime and 2% quantum yield via spin-allowed transition from a doublet ligand-to-metal charge-transfer (2LMCT) state to the doublet ground state. Reductive and oxidative electron-transfer reactions were observed for the2LMCT state of [Fe(phtmeimb)2]+in bimolecular quenching studies with methylviologen and diphenylamine.
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190
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Speckmeier E, Fischer TG, Zeitler K. A Toolbox Approach To Construct Broadly Applicable Metal-Free Catalysts for Photoredox Chemistry: Deliberate Tuning of Redox Potentials and Importance of Halogens in Donor-Acceptor Cyanoarenes. J Am Chem Soc 2018; 140:15353-15365. [PMID: 30277767 DOI: 10.1021/jacs.8b08933] [Citation(s) in RCA: 325] [Impact Index Per Article: 54.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The targeted choice of specific photocatalysts has been shown to play a critical role for the successful realization of challenging photoredox catalytic transformations. Herein, we demonstrate the successful implementation of a rational design strategy for a series of deliberate structural manipulations of cyanoarene-based, purely organic donor-acceptor photocatalysts, using 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene (4CzIPN) as a starting point. Systematic modifications of both the donor substituents as well as the acceptors' molecular core allowed us to identify strongly oxidizing as well as strongly reducing catalysts (e.g., for an unprecedented detriflation of unactivated naphthol triflate), which additionally offer remarkably balanced redox potentials with predictable trends. Especially halogen arene core substitutions are instrumental for our targeted alterations of the catalysts' redox properties. Based on their preeminent electrochemical and photophysical characteristics, all novel, purely organic photoredox catalysts were evaluated in three challenging, mechanistically distinct classes of benchmark reactions (either requiring balanced, highly oxidizing or strongly reducing properties) to demonstrate their enormous potential as customizable photocatalysts, that outperform and complement prevailing typical best photocatalysts.
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Affiliation(s)
- Elisabeth Speckmeier
- Institut für Organische Chemie , Universität Leipzig , Johannisallee 29 , D-04103 Leipzig , Germany
| | - Tillmann G Fischer
- Institut für Organische Chemie , Universität Leipzig , Johannisallee 29 , D-04103 Leipzig , Germany
| | - Kirsten Zeitler
- Institut für Organische Chemie , Universität Leipzig , Johannisallee 29 , D-04103 Leipzig , Germany
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191
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Fedorchuk A, Slyvka Y, Goreshnik E, Kityk I, Czaja P, Mys’kiv M. Crystal structure and NLO properties of the novel tetranuclear copper(I) chloride π-complex with 3-allyl-2-(allylimino)-1,3-thiazolidin-4-one. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.06.017] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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192
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Abstract
In this invited Perspective, recent developments and possible future directions of research on photoactive coordination compounds made from nonprecious transition metal elements will be discussed. The focus is on conceptually new, structurally well-characterized complexes with excited-state lifetimes between 10 ps and 1 ms in fluid solution for possible applications in photosensitizing, light-harvesting, luminescence and catalysis. The key metal elements considered herein are Cr, Mn, Fe, Co, Ni, Cu, Zn, Zr, Mo, W and Ce in various oxidation states equipped with diverse ligands, giving access to long-lived excited states via a range of fundamentally different types of electronic transitions. Research performed in this area over the past five years demonstrated that a much broader spectrum of metal complexes than what was long considered relevant exhibits useful photophysics and photochemistry.
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Affiliation(s)
- Oliver S Wenger
- Department of Chemistry , University of Basel , St. Johanns-Ring 19 , 4056 Basel , Switzerland
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193
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Bestgen S, Schoo C, Neumeier BL, Feuerstein TJ, Zovko C, Köppe R, Feldmann C, Roesky PW. Intensely Photoluminescent Diamidophosphines of the Alkaline-Earth Metals, Aluminum, and Zinc. Angew Chem Int Ed Engl 2018; 57:14265-14269. [PMID: 30040153 DOI: 10.1002/anie.201806943] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2018] [Indexed: 11/09/2022]
Abstract
The positively charged and weakly polarizable s-block metals commonly do not usually have phosphine ligands in molecular complexes. Herein, we report mono- and dinuclear small diamidophosphine complexes of the alkaline-earth metals Mg, Ca, and Sr, which were prepared from simple precursors and a phosphine-functionalized diamine ligand N,N-bis(2-(diphenyl-phosphino)phenyl)ethane-1,2-diamine (PNHNHP). The alkaline-earth metal based complexes [(PNNP)Mg]2 and [(PNNP)M(thf)3 ] (M=Ca, Sr), exhibit unusual coordination spheres and show bright fluorescence, both in the solid state and in solution. For comparison, the even stronger luminescent Al and Zn complexes [(PNNP)Zn]2 and [(PNNP)AlCl] were prepared. Emission lifetimes in the nanosecond range and high photoluminescence quantum yields up to 93 % are observed at room temperature.
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Affiliation(s)
- Sebastian Bestgen
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany.,Department of Chemistry, Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Christoph Schoo
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany
| | - B Lilli Neumeier
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany
| | - Thomas J Feuerstein
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany
| | - Christina Zovko
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany
| | - Ralf Köppe
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany
| | - Claus Feldmann
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany
| | - Peter W Roesky
- Institute of Inorganic Chemistry, Karlsruhe Institute of Technology (KIT), Engesserstrasse 15, 76131, Karlsruhe, Germany
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194
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Bestgen S, Schoo C, Neumeier BL, Feuerstein TJ, Zovko C, Köppe R, Feldmann C, Roesky PW. Photolumineszierende Diamidophosphankomplexe der Erdalkalimetalle, des Aluminiums und des Zinks. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806943] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Sebastian Bestgen
- Institut für Anorganische Chemie; Karlsruher Institut für Technologie (KIT); Engesserstraße 15 76131 Karlsruhe Germany
- Department of Chemistry; Chemistry Research Laboratory; University of Oxford; 12 Mansfield Road Oxford OX1 3TA UK
| | - Christoph Schoo
- Institut für Anorganische Chemie; Karlsruher Institut für Technologie (KIT); Engesserstraße 15 76131 Karlsruhe Germany
| | - B. Lilli Neumeier
- Institut für Anorganische Chemie; Karlsruher Institut für Technologie (KIT); Engesserstraße 15 76131 Karlsruhe Germany
| | - Thomas J. Feuerstein
- Institut für Anorganische Chemie; Karlsruher Institut für Technologie (KIT); Engesserstraße 15 76131 Karlsruhe Germany
| | - Christina Zovko
- Institut für Anorganische Chemie; Karlsruher Institut für Technologie (KIT); Engesserstraße 15 76131 Karlsruhe Germany
| | - Ralf Köppe
- Institut für Anorganische Chemie; Karlsruher Institut für Technologie (KIT); Engesserstraße 15 76131 Karlsruhe Germany
| | - Claus Feldmann
- Institut für Anorganische Chemie; Karlsruher Institut für Technologie (KIT); Engesserstraße 15 76131 Karlsruhe Germany
| | - Peter W. Roesky
- Institut für Anorganische Chemie; Karlsruher Institut für Technologie (KIT); Engesserstraße 15 76131 Karlsruhe Germany
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195
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Haque A, Al-Balushi RA, Al-Busaidi IJ, Khan MS, Raithby PR. Rise of Conjugated Poly-ynes and Poly(Metalla-ynes): From Design Through Synthesis to Structure-Property Relationships and Applications. Chem Rev 2018; 118:8474-8597. [PMID: 30112905 DOI: 10.1021/acs.chemrev.8b00022] [Citation(s) in RCA: 109] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Conjugated poly-ynes and poly(metalla-ynes) constitute an important class of new materials with potential application in various domains of science. The key factors responsible for the diverse usage of these materials is their intriguing and tunable chemical and photophysical properties. This review highlights fascinating advances made in the field of conjugated organic poly-ynes and poly(metalla-ynes) incorporating group 4-11 metals. This includes several important aspects of conjugated poly-ynes viz. synthetic protocols, bonding, electronic structure, nature of luminescence, structure-property relationships, diverse applications, and concluding remarks. Furthermore, we delineated the future directions and challenges in this particular area of research.
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Affiliation(s)
- Ashanul Haque
- Department of Chemistry , Sultan Qaboos University , P.O. Box 36, Al-Khod 123 , Sultanate of Oman
| | - Rayya A Al-Balushi
- Department of Chemistry , Sultan Qaboos University , P.O. Box 36, Al-Khod 123 , Sultanate of Oman
| | - Idris Juma Al-Busaidi
- Department of Chemistry , Sultan Qaboos University , P.O. Box 36, Al-Khod 123 , Sultanate of Oman
| | - Muhammad S Khan
- Department of Chemistry , Sultan Qaboos University , P.O. Box 36, Al-Khod 123 , Sultanate of Oman
| | - Paul R Raithby
- Department of Chemistry , University of Bath , Claverton Down , Bath BA2 7AY , U.K
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196
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Jianbo H, Tingting Z, Yongjing C, Yuanyuan Z, Weiqing Y, Menglin M. Study on Relationship Between Fluorescence Properties and Structure of Substituted 8-Hydroxyquinoline Zinc Complexes. J Fluoresc 2018; 28:1121-1126. [PMID: 30076497 DOI: 10.1007/s10895-018-2275-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 07/30/2018] [Indexed: 11/25/2022]
Abstract
Organic light-emitting diodes (OLEDs) produced from 8-hydroxyquinoline metal complexes play a vital role in modern electroluminescent devices. In this manuscript, a series of 8-hydroxyquinoline derivatives were synthesized by different methods and their corresponding zinc metal complexes were prepared. The UV and fluorescence properties of the complexes were measured aiming to understand the effect of substituents at the quinoline ring on the fluorescence properties of the complexes. When the C-5 of 8-hydroxyquinoline was replaced by halogen group, the fluorescence emission wavelengths had been red-shifted, at the same time, blue-shifted of fluorescence emission wavelength was observed when the C-5 position of 8-hydroxyquinoline was substituted by electron-withdrawing group. When the C-4 position of 8-hydroxyquinolie was substituted by methyl or the C-5 position was substituted by sulfonic acid group, the corresponding zinc complexes had higher fluorescence intensity than 8-hydroxyquinolie zinc.
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Affiliation(s)
- He Jianbo
- Key Lab of Advanced Scientific Computation of Sichuan Province, Faculty of Science, Xihua University, Chengdu, 610039, China
| | - Zhou Tingting
- Key Lab of Advanced Scientific Computation of Sichuan Province, Faculty of Science, Xihua University, Chengdu, 610039, China
| | - Cao Yongjing
- Key Lab of Advanced Scientific Computation of Sichuan Province, Faculty of Science, Xihua University, Chengdu, 610039, China
| | - Zhang Yuanyuan
- Key Lab of Advanced Scientific Computation of Sichuan Province, Faculty of Science, Xihua University, Chengdu, 610039, China
- Key lab of Green Chemistry and Technology of Ministry of Education. Faculty of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Yang Weiqing
- Key Lab of Advanced Scientific Computation of Sichuan Province, Faculty of Science, Xihua University, Chengdu, 610039, China
| | - Ma Menglin
- Key Lab of Advanced Scientific Computation of Sichuan Province, Faculty of Science, Xihua University, Chengdu, 610039, China.
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197
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Kara DA, Donmez A, Kara H, Coban MB. Structural and spectroscopic characterization of a new luminescent Ni II complex: bis{2,4-dichloro-6-[(2-hydroxypropyl)iminomethyl]phenolato-κ 3O,N,O'}nickel(II). ACTA CRYSTALLOGRAPHICA SECTION C-STRUCTURAL CHEMISTRY 2018; 74:901-906. [PMID: 30080164 DOI: 10.1107/s2053229618009166] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 06/25/2018] [Indexed: 01/24/2023]
Abstract
The design and preparation of transition-metal complexes with Schiff base ligands are of interest due to their potential applications in the fields of molecular magnetism, nonlinear optics, dye-sensitized solar cells (DSSCs), sensing and photoluminescence. Luminescent metal complexes have been suggested as potential phosphors in electroluminescent devices. A new luminescent nickel(II) complex, [Ni(C10H10Cl2NO2)2], has been synthesized and characterized by single-crystal X-ray diffraction and elemental analysis, UV-Vis, FT-IR, 1H NMR, 13C NMR and photoluminescence spectroscopies, and LC-MS/MS. Molecules of the complex in the crystals lie on special positions, on crystallographic binary rotation axes. The NiII atoms are six-coordinated by two phenolate O, two imine N and two hydroxy O atoms from two tridentate Schiff base 2,4-dichloro-6-[(2-hydroxypropyl)iminomethyl]phenolate ligands, forming an elongated octahedral geometry. Furthermore, the complex exhibits a strong green luminescence emission in the solid state at room temperature, as can be seen from the (CIE) chromaticity diagram, and hence the complex may be a promising green OLED (organic light-emitting diode) in the development of electroluminescent materials for flat-panel-display applications.
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Affiliation(s)
- Duygu Akin Kara
- Department of Physics, Molecular Nano-Materials Laboratory, Mugla Sitki Kocman University, Mugla, Turkey
| | - Adem Donmez
- Department of Physics, Molecular Nano-Materials Laboratory, Mugla Sitki Kocman University, Mugla, Turkey
| | - Hulya Kara
- Department of Physics, Molecular Nano-Materials Laboratory, Mugla Sitki Kocman University, Mugla, Turkey
| | - M Burak Coban
- Department of Physics, Balikesir University, Balikesir, Turkey
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198
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Berezin AS, Samsonenko DG, Brel VK, Artem'ev AV. "Two-in-one" organic-inorganic hybrid Mn II complexes exhibiting dual-emissive phosphorescence. Dalton Trans 2018; 47:7306-7315. [PMID: 29770407 DOI: 10.1039/c8dt01041b] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Unprecedented organic-inorganic hybrid complexes, [Mn(L)3]MnHal4, containing both four- and hexacoordinated Mn2+ ions were synthesized by reacting MnCl2 or MnBr2 with bis(phosphine oxide) ligands (L) such as dppmO2, dppeO2, and 2,3-bis(diphenylphosphinyl)-1,3-butadiene (dppbO2). In the [Mn(L)3]2+ cation of the complexes, the Mn2+ ion features a [MnO6] octahedral coordination environment (Oh), and the [MnHal4]2- anion adopts a tetrahedral geometry (Td). These "two-in-one" complexes exhibit strong long-lived luminescence (τav = 12-15 ms at 300 K) having interesting thermochromic behavior attributed to the thermal equilibrium between two emission bands. So, in an emission spectrum of the typical complex [Mn(dppbO2)3]MnBr4, the intense "red" (ca. 620 nm) and weak "green" (ca. 520 nm) bands, originating from Mn2+ ions in Oh and Td environments, respectively, are observed. Cooling from 300 to 77 K simultaneously leads to (i) redshift of both bands by ca. 20 nm, (ii) increasing their intensities, and (iii) causing a substantial change of their integral intensity ratio from about 4 : 1 to 2 : 1. As a result, the colour of the emission changes from orange (CIE 0.56, 0.45) at 300 K to deep red (CIE 0.62, 0.39) at 77 K. This behavior was rationalized using steady-state and time-resolved fluorescent spectroscopy at various temperatures. The high photoluminescence quantum yields (up to 61% at 300 K) and fascinating dual-emissive phosphorescence coupled with high thermal stability and solubility suggest a high potential of this novel class of emissive Mn2+ complexes as promising emitters for OLED devices and potential stimuli-responsive materials.
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Affiliation(s)
- Alexey S Berezin
- Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 3, Akad. Lavrentiev Ave., Novosibirsk 630090, Russian Federation.
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199
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Bidikoudi M, Fresta E, Costa RD. White perovskite based lighting devices. Chem Commun (Camb) 2018; 54:8150-8169. [DOI: 10.1039/c8cc03166e] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Hybrid organic–inorganic and all-inorganic metal halide perovskites have been one of the most intensively studied materials during the last few years.
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Affiliation(s)
| | - E. Fresta
- IMDEA Materials Institute
- Madrid
- Spain
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