1
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Gitlina AY, Khistiaeva V, Melnikov A, Ivonina M, Sizov V, Spiridonova D, Makarova A, Vyalikh D, Grachova E. Organometallic Ir(III) complexes: post-synthetic modification, photophysical properties and binuclear complex construction. Dalton Trans 2023. [PMID: 37334469 DOI: 10.1039/d3dt00901g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/20/2023]
Abstract
Two methods of post-synthetic modification (Suzuki coupling and CuAAC click-reaction) were applied to Ir(III) complexes [Ir(C^N)2N^N]+ to provide the second highly selective donor site. One family of functionalized complexes was used to demonstrate the potential of post-synthetic modification for controlled construction of d-d and d-f binuclear complexes. The complexes obtained were characterized by CHN elemental analysis, NMR spectroscopy, ESI mass-spectrometry, FTIR spectroscopy and single crystal X-ray diffraction analysis. By means of XPS and NEXAFS spectroscopy the coordination of diimine donor site to the Ln(III) centre has been definitely confirmed. The photophysical properties of mono- and binuclear complexes were carefully investigated, and the evolution of luminescent characteristics during the formation of a system of connected metallocenters is also discussed. TDDFT calculations were used to describe the luminescence mechanism and to confirm the conclusions made on the basis of experimental data.
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Affiliation(s)
- Anastasia Yu Gitlina
- Institut des Sciences et Ingénierie Chimiques, École Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland
| | - Viktoria Khistiaeva
- Institute of Chemistry, St Petersburg University, Universitetskii pr. 26, 198504 St. Petersburg, Russia.
| | - Alexey Melnikov
- Centre for Nano- and Biotechnologies, Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia
| | - Mariia Ivonina
- Department of Material Sciences, Faculty of Engineering Sciences, Kyushu University, Kasuga, Fukuoka 816-8580, Japan
| | - Vladimir Sizov
- Institute of Chemistry, St Petersburg University, Universitetskii pr. 26, 198504 St. Petersburg, Russia.
| | - Dar'ya Spiridonova
- Centre for X-ray Diffraction Studies, St Petersburg University, 199034 St. Petersburg, Russia
| | - Anna Makarova
- Physikalische Chemie, Institut für Chemie und Biochemie, Freie Universität Berlin, 14195 Berlin, Germany
| | - Denis Vyalikh
- Donostia International Physics Center (DIPC), 20018 Donostia-San Sebastián, Basque Country, Spain
- IKERBASQUE, Basque Foundation for Science, 48013, Bilbao, Spain
| | - Elena Grachova
- Institute of Chemistry, St Petersburg University, Universitetskii pr. 26, 198504 St. Petersburg, Russia.
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2
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Heterometallic Molecular Architectures Based on Fluorinated β-Diketone Ligands. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27227894. [PMID: 36431999 PMCID: PMC9695714 DOI: 10.3390/molecules27227894] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 11/11/2022] [Accepted: 11/11/2022] [Indexed: 11/17/2022]
Abstract
This review summarizes the data on the synthesis of coordination compounds containing two or more different metal ions based on fluorinated β-diketonates. Heterometallic systems are of high interest in terms of their potential use in catalysis, medicine and diagnostics, as well as in the development of effective sensor devices and functional materials. Having a rich history in coordination chemistry, fluorinated β-diketones are well-known ligands generating a wide variety of heterometallic complexes. In this context, we focused on both the synthetic approaches to β-dicarbonyl ligands with additional coordination centers and their possible transformations in complexation reactions. The review describes bi- and polynuclear structures in which β-diketones are the key building blocks in the formation of a heterometallic framework, including the examples of both homo- and heteroleptic complexes.
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3
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Xu K, Xie X, Zheng LM. Iridium-lanthanide complexes: Structures, properties and applications. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214367] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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4
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Rajah D, Pfrunder MC, Chong BSK, Ireland AR, Etchells IM, Moore EG. Sensitised lanthanide luminescence using a Ru II polypyridyl functionalised dipicolinic acid chelate. Dalton Trans 2021; 50:7400-7408. [PMID: 33969860 DOI: 10.1039/d1dt00982f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A visible light absorbing [RuII(tpy)2]2+-type chromophore appended with a dipicolinic acid LnIII chelator has been prepared and complexed with several differing lanthanide cations to form the corresponding heterobimetallic d-f assemblies. The subseqent solution speciation analysed by 1H NMR spectroscopy revealed an unexpected decrease in the LnIII chelate complex stability, in particular for the 1 : 3 complex, when compared to the parent dipicolinic acid. As a result, the desired Ln(ML)3 complexes could not be isolated, and the 1 : 1 LnIII-ML complexes were instead characterised and investigated using steady state absorption and emission spectroscopy. Sensitised NIR emission from the YbIII, NdIII and ErIII complexes was observed upon 1MLCT excitation of the RuII based metalloligand in the visible region at ca. 485 nm. Investigations using transient absorption spectroscopy revealed essentially quantitative intersystem crossing to form the 3MLCT excited state, as expected, which then acts as the energy donor for the metalloligand based antennae effect, facilitating sensitisation efficiencies of 4.8, 17.0 and 37.4% respectively for the YbIII, ErIII and NdIII cations.
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Affiliation(s)
- Divya Rajah
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia.
| | - Michael C Pfrunder
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia.
| | - Bowie S K Chong
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia.
| | - Alexander R Ireland
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia.
| | - Isaac M Etchells
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia.
| | - Evan G Moore
- School of Chemistry and Molecular Biosciences, The University of Queensland, St Lucia, QLD 4072, Australia.
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5
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Lehrich SW, Mahrholdt J, Korb M, Hildebrandt A, Swarts JC, Lang H. Synthesis, Characterization, and Electrochemistry of Diferrocenyl β-Diketones, -Diketonates, and Pyrazoles. Molecules 2020; 25:molecules25194476. [PMID: 33003450 PMCID: PMC7583057 DOI: 10.3390/molecules25194476] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Revised: 09/21/2020] [Accepted: 09/22/2020] [Indexed: 11/24/2022] Open
Abstract
The synthesis of FcC(O)CH(R)C(O)Fc (Fc = Fe(η5-C5H4)(η5-C5H5); R = H, 5; nBu, 7; CH2CH2(OCH2CH2)2OMe, 9), [M(κ2O,O′-FcC(O)CHC(O)Fc)n] (M = Ti, n = 3, 10; M = Fe, n = 3, 11; M = BF2, n = 1, 12), and 1-R′-3,5-Fc2-cC3HN2 (R′ = H, 13; Me, 14; Ph, 15) is discussed. The solid-state structures of 5, 7, 9, 12, 13, 15, and 16 ([TiCl2(κ2O,O′-PhC(O)CHC(O)Ph)2]) show that 7 and 9 exist in their β-diketo form. Compound 13 crystallizes as a tetramer based on a hydrogen bond pattern, including one central water molecule. The electrochemical behavior of 5–7 and 9–16 was studied by cyclic and square-wave voltammetry, showing that the ferrocenyls can separately be oxidized reversibly between −50 and 750 mV (5–7, 9, 12–15: two Fc-related events; 10, 11: six events, being partially superimposed). For complex 10, Ti-centered reversible redox processes appear at −985 (TiII/TiIII) and −520 mV (TiIII/TiIV). Spectro-electrochemical UV-Vis/NIR measurements were carried out on 5, 6, and 12, whereby only 12 showed an IVCT (intervalence charge-transfer) band of considerable strength (νmax = 6250 cm−1, Δν½ = 4725 cm−1, εmax = 240 L·mol−1·cm−1), due to the rigid C3O2B cycle, enlarging the coupling strength between the Fc groups.
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Affiliation(s)
- Steve W. Lehrich
- Anorganische Chemie, Institut für Chemie, Fakultät für Naturwissenschaften, Technische Universität Chemnitz, D-09107 Chemnitz, Germany; (S.W.L.); (J.M.); (A.H.)
| | - Julia Mahrholdt
- Anorganische Chemie, Institut für Chemie, Fakultät für Naturwissenschaften, Technische Universität Chemnitz, D-09107 Chemnitz, Germany; (S.W.L.); (J.M.); (A.H.)
| | - Marcus Korb
- School of Molecular Sciences, The University of Western Australia, 35 Stirling Highway, Crawley, Perth, WA 6009, Australia;
| | - Alexander Hildebrandt
- Anorganische Chemie, Institut für Chemie, Fakultät für Naturwissenschaften, Technische Universität Chemnitz, D-09107 Chemnitz, Germany; (S.W.L.); (J.M.); (A.H.)
| | - Jannie C. Swarts
- Department of Chemistry, University of the Free State, P.O. Box 339, Bloemfontein 9300, South Africa;
| | - Heinrich Lang
- Anorganische Chemie, Institut für Chemie, Fakultät für Naturwissenschaften, Technische Universität Chemnitz, D-09107 Chemnitz, Germany; (S.W.L.); (J.M.); (A.H.)
- Correspondence: ; Tel./Fax: +49-(0)371-531-21210
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6
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Hyre AS, Doerrer LH. A structural and spectroscopic overview of molecular lanthanide complexes with fluorinated O-donor ligands. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2019.213098] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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7
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Fan K, Bao SS, Huo R, Huang XD, Liu YJ, Yu ZW, Kurmoo M, Zheng LM. Luminescent Ir(iii)–Ln(iii) coordination polymers showing slow magnetization relaxation. Inorg Chem Front 2020. [DOI: 10.1039/c9qi01504c] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two structural types of iridium(iii)–lanthanide(iii) coordination polymers, single-chain Ir2Ln and double-chain Ir4Ln2 (Ln = Gd, Dy, Er, and Yb), have been prepared. SMM behaviour and NIR luminescence were observed for the Ir–Er and Ir–Yb systems.
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Affiliation(s)
- Kun Fan
- State Key Laboratory of Coordination Chemistry
- Coordination Chemistry Institute
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
| | - Song-Song Bao
- State Key Laboratory of Coordination Chemistry
- Coordination Chemistry Institute
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
| | - Ran Huo
- State Key Laboratory of Coordination Chemistry
- Coordination Chemistry Institute
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
| | - Xin-Da Huang
- State Key Laboratory of Coordination Chemistry
- Coordination Chemistry Institute
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
| | - Yu-Jie Liu
- State Key Laboratory of Coordination Chemistry
- Coordination Chemistry Institute
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
| | - Zi-Wen Yu
- State Key Laboratory of Coordination Chemistry
- Coordination Chemistry Institute
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
| | - Mohamedally Kurmoo
- Institut de Chimie
- Université de Strasbourg CNRS-UMR7177
- Strasbourg Cedex 67007
- France
| | - Li-Min Zheng
- State Key Laboratory of Coordination Chemistry
- Coordination Chemistry Institute
- School of Chemistry and Chemical Engineering
- Collaborative Innovation Center of Advanced Microstructures
- Nanjing University
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8
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Balasooriya D, Liu B, He H, Sykes A, May PS. A conjugated porphyrin as a red-light sensitizer for near-infrared emission of ytterbium(iii) ion. NEW J CHEM 2020. [DOI: 10.1039/d0nj04910g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A conjugated porphyrin with broader absorption in the visible region was synthesized for sensitizing the near-infrared emission of ytterbium(iii) ions.
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Affiliation(s)
- Dinesh Balasooriya
- Department of Chemistry and Biochemistry
- Eastern Illinois University
- Charleston
- USA
| | - Beibei Liu
- Department of Chemistry and Biochemistry
- Eastern Illinois University
- Charleston
- USA
| | - Hongshan He
- Department of Chemistry and Biochemistry
- Eastern Illinois University
- Charleston
- USA
| | - Andew Sykes
- Department of Chemistry
- University of South Dakota
- Vermillion
- USA
| | - P. Stanley May
- Department of Chemistry
- University of South Dakota
- Vermillion
- USA
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9
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Jia JH, Li QW, Chen YC, Liu JL, Tong ML. Luminescent single-molecule magnets based on lanthanides: Design strategies, recent advances and magneto-luminescent studies. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2017.11.012] [Citation(s) in RCA: 173] [Impact Index Per Article: 34.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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10
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Davidson R, Hsu YT, Bhagani C, Yufit D, Beeby A. Exploring the Chemistry and Photophysics of Substituted Picolinates Positional Isomers in Iridium(III) Bisphenylpyridine Complexes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00179] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ross Davidson
- Department of Chemistry, Durham University, South Road, Durham DH1
3LE, United Kingdom
| | - Yu-Ting Hsu
- Department of Chemistry, Durham University, South Road, Durham DH1
3LE, United Kingdom
| | - Chandni Bhagani
- Department of Chemistry, Durham University, South Road, Durham DH1
3LE, United Kingdom
| | - Dmitry Yufit
- Department of Chemistry, Durham University, South Road, Durham DH1
3LE, United Kingdom
| | - Andrew Beeby
- Department of Chemistry, Durham University, South Road, Durham DH1
3LE, United Kingdom
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11
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Jiang W, Hong C, Wei H, Wu Z, Bian Z, Huang C. A green-emitting iridium complex used for sensitizing europium ion with high quantum yield. Inorganica Chim Acta 2017. [DOI: 10.1016/j.ica.2017.01.019] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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He H, Bosonetta JD, Wheeler KA, May SP. Sisters together: co-sensitization of near-infrared emission of ytterbium(iii) by BODIPY and porphyrin dyes. Chem Commun (Camb) 2017; 53:10120-10123. [DOI: 10.1039/c7cc05437h] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
A ytterbium(iii) complex with a BODIPY and a porphyrin as co-sensitizers emits strongly at 978 nm over a broader excitation window between 450–560 nm.
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Affiliation(s)
- Hongshan He
- Department of Chemistry
- Eastern Illinois University
- Charleston
- USA
| | | | | | - Stanley P. May
- Department of Chemistry
- University of South Dakota
- Vermillion
- USA
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13
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Sykes D, Cankut AJ, Ali NM, Stephenson A, Spall SJP, Parker SC, Weinstein JA, Ward MD. Sensitisation of Eu(III)- and Tb(III)-based luminescence by Ir(III) units in Ir/lanthanide dyads: evidence for parallel energy-transfer and electron-transfer based mechanisms. Dalton Trans 2014; 43:6414-28. [PMID: 24608523 DOI: 10.1039/c4dt00292j] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A series of blue-luminescent Ir(III) complexes with a pendant binding site for lanthanide(III) ions has been synthesized and used to prepare Ir(III)/Ln(III) dyads (Ln = Eu, Tb, Gd). Photophysical studies were used to establish mechanisms of Ir→Ln (Ln = Tb, Eu) energy-transfer. In the Ir/Gd dyads, where direct Ir→Gd energy-transfer is not possible, significant quenching of Ir-based luminescence nonetheless occurred; this can be ascribed to photoinduced electron-transfer from the photo-excited Ir unit (*Ir, (3)MLCT/(3)LC excited state) to the pendant pyrazolyl-pyridine site which becomes a good electron-acceptor when coordinated to an electropositive Gd(III) centre. This electron transfer quenches the Ir-based luminescence, leading to formation of a charge-separated {Ir(4+)}˙-(pyrazolyl-pyridine)˙(-) state, which is short-lived possibly due to fast back electron-transfer (<20 ns). In the Ir/Tb and Ir/Eu dyads this electron-transfer pathway is again operative and leads to sensitisation of Eu-based and Tb-based emission using the energy liberated from the back electron-transfer process. In addition direct Dexter-type Ir→Ln (Ln = Tb, Eu) energy-transfer occurs on a similar timescale, meaning that there are two parallel mechanisms by which excitation energy can be transferred from *Ir to the Eu/Tb centre. Time-resolved luminescence measurements on the sensitised Eu-based emission showed both fast and slow rise-time components, associated with the PET-based and Dexter-based energy-transfer mechanisms respectively. In the Ir/Tb dyads, the Ir→Tb energy-transfer is only just thermodynamically favourable, leading to rapid Tb→Ir thermally-activated back energy-transfer and non-radiative deactivation to an extent that depends on the precise energy gap between the *Ir and Tb-based (5)D4 states. Thus, the sensitised Tb(iii)-based emission is weak and unusually short-lived due to back energy transfer, but nonetheless represents rare examples of Tb(III) sensitisation by a energy donor that could be excited using visible light as opposed to the usually required UV excitation.
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Affiliation(s)
- Daniel Sykes
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, UK.
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14
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Wu Y, Shi M, Zhao L, Feng W, Li F, Huang C. Visible-light-excited and europium-emissive nanoparticles for highly-luminescent bioimaging in vivo. Biomaterials 2014; 35:5830-9. [DOI: 10.1016/j.biomaterials.2014.03.080] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2014] [Accepted: 03/27/2014] [Indexed: 11/28/2022]
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15
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Chen FF, Wei HB, Bian ZQ, Liu ZW, Ma E, Chen ZN, Huang CH. Sensitized Near-Infrared Emission from IrIII-LnIII (Ln = Nd, Yb, Er) Bimetallic Complexes with a (N∧O)(N∧O) Bridging Ligand. Organometallics 2014. [DOI: 10.1021/om401110k] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fang-Fang Chen
- Beijing National Laboratory for
Molecular Sciences,
State Key Laboratory of Rare Earth Materials Chemistry and Applications,
College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, People’s Republic of China
- National Engineering Laboratory
for Hydrometallurgical
Cleaner Production Technology, Key Laboratory of Green Process and
Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, People’s Republic of China
| | - Hui-Bo Wei
- Beijing National Laboratory for
Molecular Sciences,
State Key Laboratory of Rare Earth Materials Chemistry and Applications,
College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, People’s Republic of China
| | - Zu-Qiang Bian
- Beijing National Laboratory for
Molecular Sciences,
State Key Laboratory of Rare Earth Materials Chemistry and Applications,
College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, People’s Republic of China
| | - Zhi-Wei Liu
- Beijing National Laboratory for
Molecular Sciences,
State Key Laboratory of Rare Earth Materials Chemistry and Applications,
College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, People’s Republic of China
| | - En Ma
- State Key Laboratory of Structural
Chemistry,
Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People’s Republic of China
| | - Zhong-Ning Chen
- State Key Laboratory of Structural
Chemistry,
Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People’s Republic of China
| | - Chun-Hui Huang
- Beijing National Laboratory for
Molecular Sciences,
State Key Laboratory of Rare Earth Materials Chemistry and Applications,
College of Chemistry and Molecular Engineering, Peking University, Beijing, 100871, People’s Republic of China
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16
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Jakob A, Joubert CC, Rüffer T, Swarts JC, Lang H. Chemical and electrochemical oxidation studies on new copper(I) ferrocenyl-functionalised β-diketonates. Inorganica Chim Acta 2014. [DOI: 10.1016/j.ica.2013.11.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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17
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Zeng D, Ren M, Bao SS, Li L, Zheng LM. A luminescent heptanuclear DyIr6 complex showing field-induced slow magnetization relaxation. Chem Commun (Camb) 2014; 50:8356-9. [DOI: 10.1039/c4cc02951h] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Li T, Hong XJ, Liu X, Chen R, Zhan QG, Xu X, Cai YP. Construction of three pH-dependent luminescent metal–organic frameworks with 3-(4-carboxyphen-yl)-1,3-benzoimidazole. CrystEngComm 2014. [DOI: 10.1039/c4ce00125g] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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19
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Sykes D, Parker SC, Sazanovich IV, Stephenson A, Weinstein JA, Ward MD. d→f energy transfer in Ir(III)/Eu(III) dyads: use of a naphthyl spacer as a spatial and energetic "stepping stone". Inorg Chem 2013; 52:10500-11. [PMID: 24007190 PMCID: PMC3971759 DOI: 10.1021/ic401410g] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Indexed: 02/04/2023]
Abstract
A series of luminescent complexes based on {Ir(phpy)2} (phpy = cyclometallating anion of 2-phenylpyridine) or {Ir(F2phpy)2} [F2phpy = cyclometallating anion of 2-(2',4'-difluorophenyl)pyridine] units, with an additional 3-(2-pyridyl)-pyrazole (pypz) ligand, have been prepared; fluorination of the phenylpyridine ligands results in a blue-shift of the usual (3)MLCT/(3)LC luminescence of the Ir unit from 477 to 455 nm. These complexes have pendant from the coordinated pyrazolyl ring an additional chelating 3-(2-pyridyl)-pyrazole unit, separated via a flexible chain containing a naphthalene-1,4-diyl or naphthalene-1,5-diyl spacer. Crystal structures show that the flexibility of the pendant chain allows the naphthyl group to lie close to the Ir core and participate in a π-stacking interaction with a coordinated phpy or F2phpy ligand. Luminescence spectra show that, whereas the {Ir(phpy)2(pypz)} complexes show typical Ir-based emission--albeit with lengthened lifetimes because of interaction with the stacked naphthyl group--the {Ir(F2phpy)2(pypz)} complexes are nearly quenched. This is because the higher energy of the Ir-based (3)MLCT/(3)LC excited state can now be quenched by the adjacent naphthyl group to form a long-lived naphthyl-centered triplet ((3)nap) state which is detectable by transient absorption. Coordination of an {Eu(hfac)3} unit (hfac = 1,1,1,5,5,5-hexafluoro-pentane-2,4-dionate) to the pendant pypz binding site affords Ir-naphthyl-Eu triads. For the triads containing a {Ir(phpy)2} core, the unavailability of the (3)nap state (not populated by the Ir-based excited state which is too low in energy) means that direct Ir→Eu energy-transfer occurs in the same way as in other flexible Ir/Eu complexes. However for the triads based on the{Ir(F2phpy)2} core, the initial Ir→(3)nap energy-transfer step is followed by a second, slower, (3)nap→Eu energy-transfer step: transient absorption measurements clearly show the (3)nap state being sensitized by the Ir center (synchronous Ir-based decay and (3)nap rise-time) and then transferring its energy to the Eu center (synchronous (3)nap decay and Eu-based emission rise time). Thus the (3)nap state, which is energetically intermediate in the {Ir(F2phpy)2}-naphthyl-Eu systems, can act as a "stepping stone" for two-step d→f energy-transfer.
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Affiliation(s)
- Daniel Sykes
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K.
| | - Simon C. Parker
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K.
| | - Igor V. Sazanovich
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K.
| | - Andrew Stephenson
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K.
| | - Julia A. Weinstein
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K.
| | - Michael D. Ward
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K.
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20
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Xu HB, Deng JG, Kang B. Designed synthesis and photophysical properties of multifunctional hybrid lanthanide complexes. RSC Adv 2013. [DOI: 10.1039/c3ra40513c] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
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Steunenberg P, Ruggi A, van den Berg NS, Buckle T, Kuil J, van Leeuwen FW, Velders AH. Phosphorescence Imaging of Living Cells with Amino Acid-Functionalized Tris(2-phenylpyridine)iridium(III) Complexes. Inorg Chem 2012; 51:2105-14. [DOI: 10.1021/ic201860s] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Peter Steunenberg
- Supramolecular Chemistry and
Technology, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands
| | - Albert Ruggi
- Supramolecular Chemistry and
Technology, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands
| | - Nynke S. van den Berg
- Division of Diagnostic Oncology, The Netherlands Cancer Institute, Plesmanlaan 121,
1066 CX, Amsterdam, The Netherlands; Interventional Molecular Imaging
Section, Department of Radiology, Leiden University Medical Center,
Leiden, The Netherlands
| | - Tessa Buckle
- Division of Diagnostic Oncology, The Netherlands Cancer Institute, Plesmanlaan 121,
1066 CX, Amsterdam, The Netherlands; Interventional Molecular Imaging
Section, Department of Radiology, Leiden University Medical Center,
Leiden, The Netherlands
| | - Joeri Kuil
- Division of Diagnostic Oncology, The Netherlands Cancer Institute, Plesmanlaan 121,
1066 CX, Amsterdam, The Netherlands; Interventional Molecular Imaging
Section, Department of Radiology, Leiden University Medical Center,
Leiden, The Netherlands
| | - Fijs W.B. van Leeuwen
- Division of Diagnostic Oncology, The Netherlands Cancer Institute, Plesmanlaan 121,
1066 CX, Amsterdam, The Netherlands; Interventional Molecular Imaging
Section, Department of Radiology, Leiden University Medical Center,
Leiden, The Netherlands
| | - Aldrik H. Velders
- Supramolecular Chemistry and
Technology, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500 AE, Enschede, The Netherlands
- BioNanoTechnology
group, Laboratory
of Physical Chemistry and Colloid Science Wageningen University, Dreijenplein
6, 6703 HB, Wageningen, The Netherlands
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Sun YG, Xiong G, Guo MY, Ding F, Wang SJ, Smet PF, Poelman D, Gao EJ, Verpoort F. Hydrothermal synthesis, crystal structure and properties of Ni(ii)–4f complexes based on 1H-benzimidazole-5,6-dicarboxylic acid. Dalton Trans 2012; 41:7670-80. [DOI: 10.1039/c2dt30277b] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Jones JE, Jenkins RL, Hicks RS, Hallett AJ, Pope SJA. Water-soluble, luminescent iridium(iii)–ytterbium(iii) complexes using dipyrido[3,2-a:2′,3′-c]phenazine derivatives as bridging units. Dalton Trans 2012; 41:10372-81. [DOI: 10.1039/c2dt31115a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Sykes D, Tidmarsh IS, Barbieri A, Sazanovich IV, Weinstein JA, Ward MD. d → f Energy Transfer in a Series of IrIII/EuIII Dyads: Energy-Transfer Mechanisms and White-Light Emission. Inorg Chem 2011; 50:11323-39. [DOI: 10.1021/ic2007759] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Daniel Sykes
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K
| | - Ian S. Tidmarsh
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K
| | | | | | | | - Michael D. Ward
- Department of Chemistry, University of Sheffield, Sheffield S3 7HF, U.K
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Zapiter JMD, Tissue BM, Brewer KJ. Synthesis and characterization of iridium polypyridyl complexes with ester groups with potential applications in covalent attachment to metal oxide surfaces. J COORD CHEM 2011. [DOI: 10.1080/00958972.2011.616928] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Joan Marie D. Zapiter
- a Department of Chemistry , Virginia Polytechnic Institute and State University , Blacksburg, Virginia 24061–0212, USA
| | - Brian M. Tissue
- a Department of Chemistry , Virginia Polytechnic Institute and State University , Blacksburg, Virginia 24061–0212, USA
| | - Karen J. Brewer
- a Department of Chemistry , Virginia Polytechnic Institute and State University , Blacksburg, Virginia 24061–0212, USA
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Zhu X, Wong W, Wong W, Yang X. Design and Synthesis of Near‐Infrared Emissive Lanthanide Complexes Based on Macrocyclic Ligands. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100481] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xunjin Zhu
- Institute of Molecular Functional Materials (Areas of Excellence Scheme University Grants Committee, Hong Kong) and Department of Chemistry and Centre for Advanced Luminescence Materials, Hong Kong Baptist University, Waterloo Road, Hong Kong, P. R. China
| | - Wai‐Kwok Wong
- Institute of Molecular Functional Materials (Areas of Excellence Scheme University Grants Committee, Hong Kong) and Department of Chemistry and Centre for Advanced Luminescence Materials, Hong Kong Baptist University, Waterloo Road, Hong Kong, P. R. China
| | - Wai‐Yeung Wong
- Institute of Molecular Functional Materials (Areas of Excellence Scheme University Grants Committee, Hong Kong) and Department of Chemistry and Centre for Advanced Luminescence Materials, Hong Kong Baptist University, Waterloo Road, Hong Kong, P. R. China
| | - Xiaoping Yang
- Department of Chemistry and Biochemistry, The University of Texas at Austin, 1 University Station A5300, Austin, Texas 78712‐0165, USA, Fax: +1‐852‐3411‐7348
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Lian P, Wei H, Zheng C, Nie Y, Bian J, Bian Z, Huang C. Synthesis, characteristics and photoluminescent properties of novel Ir–Eu heteronuclear complexes containing 2-carboxyl-pyrimidine as a bridging ligand. Dalton Trans 2011; 40:5476-82. [DOI: 10.1039/c0dt01592j] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Jiang W, Lou B, Wang J, Lv H, Bian Z, Huang C. The influence of triplet energy levels of bridging ligands on energy transfer processes in Ir(iii)/Eu(iii) dyads. Dalton Trans 2011; 40:11410-8. [DOI: 10.1039/c1dt10968e] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Lü XQ, Feng WX, Hui YN, Wei T, Song JR, Zhao SS, Wong WY, Wong WK, Jones RA. Near-Infrared Luminescent, Neutral, Cyclic Zn2Ln2 (Ln = Nd, Yb, and Er) Complexes from Asymmetric Salen-Type Schiff Base Ligands. Eur J Inorg Chem 2010. [DOI: 10.1002/ejic.201000100] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Chen ZQ, Bian ZQ, Huang CH. Functional IrIII complexes and their applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2010; 22:1534-1539. [PMID: 20437503 DOI: 10.1002/adma.200903233] [Citation(s) in RCA: 158] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Iridium complexes are drawing great interest because they exhibit high phosphorescence quantum efficiency. Extensive efforts have been devoted to the molecular design of ligands to achieve phosphorescent emission over a wide range of wavelengths that is compatible with many applications. In this research news article, we focus on materials design to improve the performance of phosphorescent Ir(III) complexes for organic light-emitting diodes (OLEDs), luminescence sensitizers, and biological imaging.
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Affiliation(s)
- Zhu-qi Chen
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University Beijing, 100871, P.R. China
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He H, Dubey M, Sykes AG, May PS. Hybridization of near-infrared emitting erbium(iii) and ytterbium(iii) monoporphyrinate complexes with silica xerogel: synthesis, structure and photophysics. Dalton Trans 2010; 39:6466-74. [DOI: 10.1039/c0dt00132e] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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Tart NM, Sykes D, Sazanovich I, Tidmarsh IS, Ward MD. Iridium(iii) luminophores as energy donors for sensitised emission from lanthanides in the visible and near-infrared regions. Photochem Photobiol Sci 2010; 9:886-9. [DOI: 10.1039/c0pp00011f] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Eliseeva SV, Bünzli JCG. Lanthanide luminescence for functional materials and bio-sciences. Chem Soc Rev 2010; 39:189-227. [PMID: 20023849 DOI: 10.1039/b905604c] [Citation(s) in RCA: 2120] [Impact Index Per Article: 151.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Svetlana V Eliseeva
- Laboratory of Lanthanide Supramolecular Chemistry, Swiss Federal Institute of Technology, Lausanne (EPFL)
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Synthesis and photophysical properties of IrIII-LnIII (Ln = Nd, Yb, Er) bimetallic complexes containing bipyrimidines as bridging ligands. ACTA ACUST UNITED AC 2009. [DOI: 10.1007/s11426-009-0269-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Andrews M, Ward B, Laye R, Kariuki B, Pope S. Sensitized Lanthanide-Ion Luminescence with Aryl-SubstitutedN-(2-Nitrophenyl)acetamide-Derived Chromophores. Helv Chim Acta 2009. [DOI: 10.1002/hlca.200900108] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Bi W, Wei T, Lü X, Hui Y, Song J, Zhao S, Wong WK, Jones RA. Hetero-trinuclear near-infrared (NIR) luminescent Zn2Ln complexes from Salen-type Schiff-base ligands. NEW J CHEM 2009. [DOI: 10.1039/b9nj00228f] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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