1
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Louis M, Tan YB, Reine P, Katao S, Nishikawa Y, Asanoma F, Kawai T. Conglomerate, Racemate, and Achiral Crystals of Polymetallic Europium(III) Compounds of Bis- or Tris-β-diketonate Ligands and Circularly Polarized Luminescence Study. ACS OMEGA 2023; 8:5722-5730. [PMID: 36816710 PMCID: PMC9933189 DOI: 10.1021/acsomega.2c07310] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 01/13/2023] [Indexed: 06/18/2023]
Abstract
This work reports (a) conglomerate and racemic crystal structures of [(Δ,Δ,Δ,Δ,Δ,Δ)- or/and (Λ,Λ,Λ,Λ,Λ,Λ)-EuIII 6(TTP)8(OH2)6Na4] n coordination polymers, (b) racemic crystal structures of (Δ,Δ,Δ,Δ)-/(Λ,Λ,Λ,Λ)-EuIII 4(TTP)4(bipy)4(MEK)2(OH2)2 tetrahedral clusters, and (c) the achiral crystal structure of the [EuIII 2(BTP)4(OH2)2Na2] n coordination polymer (where BTP = dianionic bis-β-diketonate, TTP = trianionic tris-β-diketonate, and bipy = 2,2'-bipyridine). The screw coordination arrangement of the TTP ligand has led to the formation of homoconfigurational racemic EuIII products. The conglomerate crystallization of [EuIII 6(TTP)8(OH2)6Na4] n appears to be caused by the presence of the sodium, Na+ counterions, and interactions between oxygen atoms and the trifluoromethyl unit of the TTP ligand and Na+ ions. All the EuIII compounds exhibit characteristic red luminescence (5D0 → 7FJ, J = 0-4) in solution or in the solid crystalline state. Circularly polarized luminescence (CPL) was observed in the chiral EuIII 6(TTP)8(OH2)6Na4] n species, displaying a |g lum| value in the range of 0.15 to 0.68 at the 5D0 → 7F1 emission band. Subtle changes of the [EuIII 6(TTP)8(OH2)6Na4] n structure which may be due to selection of twinned crystals or crystals that do not correspond to a perfect spontaneous resolution, are considered to be responsible for the variation in the observed CPL values.
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2
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Henwood AF, Hegarty IN, McCarney EP, Lovitt JI, Donohoe S, Gunnlaugsson T. Recent advances in the development of the btp motif: A versatile terdentate coordination ligand for applications in supramolecular self-assembly, cation and anion recognition chemistries. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214206] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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3
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Facile Synthesis of 1,5-Diaryl-4-pyridyl-1,2,3-triaozle Derivatives. Chem Res Chin Univ 2018. [DOI: 10.1007/s40242-018-8129-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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4
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van Hilst QVC, Lagesse NR, Preston D, Crowley JD. Functional metal complexes from CuAAC “click” bidentate and tridentate pyridyl-1,2,3-triazole ligands. Dalton Trans 2018; 47:997-1002. [DOI: 10.1039/c7dt04570k] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
This Frontiers article examines the use of “click” complexes for the development of catalysts, anti-cancer and anti-bacterial agents and emissive materials.
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Affiliation(s)
| | | | - Dan Preston
- Department of Chemistry
- University of Otago
- Dunedin 9054
- New Zealand
| | - James D. Crowley
- Department of Chemistry
- University of Otago
- Dunedin 9054
- New Zealand
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5
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Schulze B, Friebe C, Jäger M, Görls H, Birckner E, Winter A, Schubert US. PtII Phosphors with Click-Derived 1,2,3-Triazole-Containing Tridentate Chelates. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00777] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- B. Schulze
- Laboratory of Organic and Macromolecular Chemistry (IOMC), ‡Center for Energy
and Environmental Chemistry Jena (CEEC Jena), §Laboratory of Inorganic and Analytical
Chemistry, and ∥Institute of Physical Chemistry, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - C. Friebe
- Laboratory of Organic and Macromolecular Chemistry (IOMC), ‡Center for Energy
and Environmental Chemistry Jena (CEEC Jena), §Laboratory of Inorganic and Analytical
Chemistry, and ∥Institute of Physical Chemistry, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - M. Jäger
- Laboratory of Organic and Macromolecular Chemistry (IOMC), ‡Center for Energy
and Environmental Chemistry Jena (CEEC Jena), §Laboratory of Inorganic and Analytical
Chemistry, and ∥Institute of Physical Chemistry, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - H. Görls
- Laboratory of Organic and Macromolecular Chemistry (IOMC), ‡Center for Energy
and Environmental Chemistry Jena (CEEC Jena), §Laboratory of Inorganic and Analytical
Chemistry, and ∥Institute of Physical Chemistry, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - E. Birckner
- Laboratory of Organic and Macromolecular Chemistry (IOMC), ‡Center for Energy
and Environmental Chemistry Jena (CEEC Jena), §Laboratory of Inorganic and Analytical
Chemistry, and ∥Institute of Physical Chemistry, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - A. Winter
- Laboratory of Organic and Macromolecular Chemistry (IOMC), ‡Center for Energy
and Environmental Chemistry Jena (CEEC Jena), §Laboratory of Inorganic and Analytical
Chemistry, and ∥Institute of Physical Chemistry, Friedrich Schiller University Jena, 07743 Jena, Germany
| | - U. S. Schubert
- Laboratory of Organic and Macromolecular Chemistry (IOMC), ‡Center for Energy
and Environmental Chemistry Jena (CEEC Jena), §Laboratory of Inorganic and Analytical
Chemistry, and ∥Institute of Physical Chemistry, Friedrich Schiller University Jena, 07743 Jena, Germany
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6
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Scattergood PA, Sinopoli A, Elliott PI. Photophysics and photochemistry of 1,2,3-triazole-based complexes. Coord Chem Rev 2017. [DOI: 10.1016/j.ccr.2017.06.017] [Citation(s) in RCA: 69] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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7
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Schweinfurth D, Hettmanczyk L, Suntrup L, Sarkar B. Metal Complexes of Click-Derived Triazoles and Mesoionic Carbenes: Electron Transfer, Photochemistry, Magnetic Bistability, and Catalysis. Z Anorg Allg Chem 2017. [DOI: 10.1002/zaac.201700030] [Citation(s) in RCA: 131] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- David Schweinfurth
- Institut für Chemie und Biochemie, Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
| | - Lara Hettmanczyk
- Institut für Chemie und Biochemie, Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
| | - Lisa Suntrup
- Institut für Chemie und Biochemie, Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
| | - Biprajit Sarkar
- Institut für Chemie und Biochemie, Anorganische Chemie; Freie Universität Berlin; Fabeckstraße 34-36 14195 Berlin Germany
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8
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Schulze B, Winter A, Friebe C, Birckner E, Schubert US. Soluble Pt II-Containing Polymers Based on a 2,6-Bis(1 H-1,2,3-triazol-4-yl)-4-ethynylpyridine Ligand. ACS Macro Lett 2017; 6:181-184. [PMID: 35632890 DOI: 10.1021/acsmacrolett.6b00936] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A soluble PtII-acetylide polymer 6 was prepared in a supramolecular polymerization of a PtII-chloro precursor complex 5, which represents a self-complementary AB-type monomer. This new type of polymer combines the structural features of the common polyplatinynes and cationic PtII-acetylide complexes. Though the photophysical and electrochemical properties of the material still need to be advanced, a versatile and straightforward method for the preparation of soluble, cationic PtII-acetylide polymers with phosphorescent behavior is offered.
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Affiliation(s)
- Benjamin Schulze
- Laboratory
of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany
| | - Andreas Winter
- Laboratory
of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany
- Jena Center for
Soft Matter (JCSM), Philosophenweg
7, 07743 Jena, Germany
- Center for Energy
and Environmental Chemistry Jena (CEEC Jena), Philosophenweg 7a, 07743 Jena, Germany
| | - Christian Friebe
- Laboratory
of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany
- Jena Center for
Soft Matter (JCSM), Philosophenweg
7, 07743 Jena, Germany
- Center for Energy
and Environmental Chemistry Jena (CEEC Jena), Philosophenweg 7a, 07743 Jena, Germany
| | - Eckhard Birckner
- Institute
of Physical Chemistry (IPC), Friedrich Schiller University Jena, Lessingstr.
10, 07743 Jena, Germany
| | - Ulrich S. Schubert
- Laboratory
of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstr. 10, 07743 Jena, Germany
- Jena Center for
Soft Matter (JCSM), Philosophenweg
7, 07743 Jena, Germany
- Center for Energy
and Environmental Chemistry Jena (CEEC Jena), Philosophenweg 7a, 07743 Jena, Germany
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9
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Fu TF, Ao L, Gao ZC, Zhang XL, Wang F. Advances on supramolecular assembly of cyclometalated platinum(II) complexes. CHINESE CHEM LETT 2016. [DOI: 10.1016/j.cclet.2016.06.054] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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10
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Byrne JP, Blasco S, Aletti AB, Hessman G, Gunnlaugsson T. Formation of Self-Templated 2,6-Bis(1,2,3-triazol-4-yl)pyridine [2]Catenanes by Triazolyl Hydrogen Bonding: Selective Anion Hosts for Phosphate. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201603213] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Joseph P. Byrne
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI); Trinity College Dublin; The University of Dublin; Dublin 2 Ireland
- Departement für Chemie und Biochemie; Universität Bern; Freiestrasse 3 3012 Bern Switzerland
| | - Salvador Blasco
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI); Trinity College Dublin; The University of Dublin; Dublin 2 Ireland
| | - Anna B. Aletti
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI); Trinity College Dublin; The University of Dublin; Dublin 2 Ireland
| | - Gary Hessman
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI); Trinity College Dublin; The University of Dublin; Dublin 2 Ireland
| | - Thorfinnur Gunnlaugsson
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI); Trinity College Dublin; The University of Dublin; Dublin 2 Ireland
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11
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Byrne JP, Blasco S, Aletti AB, Hessman G, Gunnlaugsson T. Formation of Self-Templated 2,6-Bis(1,2,3-triazol-4-yl)pyridine [2]Catenanes by Triazolyl Hydrogen Bonding: Selective Anion Hosts for Phosphate. Angew Chem Int Ed Engl 2016; 55:8938-43. [DOI: 10.1002/anie.201603213] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Indexed: 01/17/2023]
Affiliation(s)
- Joseph P. Byrne
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI); Trinity College Dublin; The University of Dublin; Dublin 2 Ireland
- Departement für Chemie und Biochemie; Universität Bern; Freiestrasse 3 3012 Bern Switzerland
| | - Salvador Blasco
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI); Trinity College Dublin; The University of Dublin; Dublin 2 Ireland
| | - Anna B. Aletti
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI); Trinity College Dublin; The University of Dublin; Dublin 2 Ireland
| | - Gary Hessman
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI); Trinity College Dublin; The University of Dublin; Dublin 2 Ireland
| | - Thorfinnur Gunnlaugsson
- School of Chemistry and Trinity Biomedical Sciences Institute (TBSI); Trinity College Dublin; The University of Dublin; Dublin 2 Ireland
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12
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Lewis JEM, Bordoli RJ, Denis M, Fletcher CJ, Galli M, Neal EA, Rochette EM, Goldup SM. High yielding synthesis of 2,2'-bipyridine macrocycles, versatile intermediates in the synthesis of rotaxanes. Chem Sci 2016; 7:3154-3161. [PMID: 29997807 PMCID: PMC6005271 DOI: 10.1039/c6sc00011h] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2016] [Accepted: 01/26/2016] [Indexed: 12/13/2022] Open
Abstract
We present an operationally simple approach to 2,2'-bipyridine macrocycles. Our method uses simple starting materials to produce these previously hard to access rotaxane precursors in remarkable yields (typically >65%) across a range of scales (0.1-5 mmol). All of the macrocycles reported are efficiently converted (>90%) to rotaxanes under AT-CuAAC conditions. With the requisite macrocycles finally available in sufficient quantities, we further demonstrate their long term utility through the first gram-scale synthesis of an AT-CuAAC [2]rotaxane and extend this powerful methodology to produce novel Sauvage-type molecular shuttles.
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Affiliation(s)
- J E M Lewis
- Chemistry , University of Southampton , Highfield , Southampton , SO17 1BJ , UK .
| | - R J Bordoli
- School of Biological and Chemical Sciences , Queen Mary University of London , Mile End Road , London , E1 4NS , UK
| | - M Denis
- Chemistry , University of Southampton , Highfield , Southampton , SO17 1BJ , UK .
| | - C J Fletcher
- Chemistry , University of Southampton , Highfield , Southampton , SO17 1BJ , UK .
| | - M Galli
- Chemistry , University of Southampton , Highfield , Southampton , SO17 1BJ , UK .
| | - E A Neal
- School of Biological and Chemical Sciences , Queen Mary University of London , Mile End Road , London , E1 4NS , UK
| | - E M Rochette
- Chemistry , University of Southampton , Highfield , Southampton , SO17 1BJ , UK .
| | - S M Goldup
- Chemistry , University of Southampton , Highfield , Southampton , SO17 1BJ , UK .
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13
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Xiang Y, Li W, Fang Y, Zhang D, Li X, Jin W. Construction and luminescence property of a highly ordered 2D self-assembled amphiphilic bidentate organoplatinum(ii) complex. RSC Adv 2016. [DOI: 10.1039/c6ra03553a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A red luminescent film was constructed by self-assembly of 1-Pt from methanol. The film on a substrate, exhibiting multi-stimuli responsiveness, was further obtained.
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Affiliation(s)
- Yunjie Xiang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
| | - Wenjing Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
| | - Yuxi Fang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
| | - Dengqing Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
| | - Xianying Li
- School of Environmental Science and Engineering
- Donghua University
- Shanghai 201620
- P. R. China
| | - Wusong Jin
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials
- College of Chemistry
- Chemical Engineering and Biotechnology
- Donghua University
- Shanghai 201620
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14
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Yam VWW, Au VKM, Leung SYL. Light-Emitting Self-Assembled Materials Based on d8 and d10 Transition Metal Complexes. Chem Rev 2015; 115:7589-728. [DOI: 10.1021/acs.chemrev.5b00074] [Citation(s) in RCA: 1065] [Impact Index Per Article: 118.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Vivian Wing-Wah Yam
- Institute of Molecular Functional
Materials (Areas of Excellence Scheme, University Grants Committee
(Hong Kong)) and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Vonika Ka-Man Au
- Institute of Molecular Functional
Materials (Areas of Excellence Scheme, University Grants Committee
(Hong Kong)) and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
| | - Sammual Yu-Lut Leung
- Institute of Molecular Functional
Materials (Areas of Excellence Scheme, University Grants Committee
(Hong Kong)) and Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, P. R. China
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15
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Byrne JP, Kitchen JA, Gunnlaugsson T. The btp [2,6-bis(1,2,3-triazol-4-yl)pyridine] binding motif: a new versatile terdentate ligand for supramolecular and coordination chemistry. Chem Soc Rev 2015; 43:5302-25. [PMID: 24871484 DOI: 10.1039/c4cs00120f] [Citation(s) in RCA: 128] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Ligands containing the btp [2,6-bis(1,2,3-triazol-4-yl)pyridine] motif have appeared with increasing regularity over the last decade. This class of ligands, formed in a one pot ‘click’ reaction, has been studied for various purposes, such as for generating d and f metal coordination complexes and supramolecular self-assemblies, and in the formation of dendritic and polymeric networks, etc. This review article introduces btp as a novel and highly versatile terdentate building block with huge potential in inorganic supramolecular chemistry. We will focus on the coordination chemistry of btp ligands with a wide range of metals, and how it compares with other classical pyridyl and polypyridyl based ligands, and then present a selection of applications including use in catalysis, enzyme inhibition, photochemistry, molecular logic and materials, e.g. polymers, dendrimers and gels. The photovoltaic potential of triazolium derivatives of btp and its interactions with anions will also be discussed.
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Affiliation(s)
- Joseph P Byrne
- School of Chemistry and Trinity Biomedical Sciences Institute, Trinity College Dublin, University of Dublin, Pearse St, Dublin 2, Ireland.
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16
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Lin WJ, Naziruddin AR, Chen YH, Sun BJ, Chang AHH, Wang WJ, Hwang WS. Photofunctional Platinum Complexes FeaturingN-heterocyclic Carbene-Based Pincer Ligands. Chem Asian J 2015; 10:728-39. [DOI: 10.1002/asia.201403306] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2014] [Indexed: 11/06/2022]
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17
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Byrne JP, Kitchen JA, O’Brien JE, Peacock RD, Gunnlaugsson T. Lanthanide Directed Self-Assembly of Highly Luminescent Supramolecular “Peptide” Bundles from α-Amino Acid Functionalized 2,6-Bis(1,2,3-triazol-4-yl)pyridine (btp) Ligands. Inorg Chem 2015; 54:1426-39. [DOI: 10.1021/ic502384w] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Joseph P. Byrne
- School of Chemistry and Trinity Biomedical
Sciences Institute, Trinity College Dublin, University of Dublin, Pearse Street, Dublin 2, Ireland
| | - Jonathan A. Kitchen
- School of Chemistry and Trinity Biomedical
Sciences Institute, Trinity College Dublin, University of Dublin, Pearse Street, Dublin 2, Ireland
- Chemistry, Faculty of Natural & Environmental Sciences, University of Southampton, Highfield, Southampton SO17 1BJ, U.K
| | - John E. O’Brien
- School of Chemistry and Trinity Biomedical
Sciences Institute, Trinity College Dublin, University of Dublin, Pearse Street, Dublin 2, Ireland
| | - Robert D. Peacock
- School of Chemistry, University of Glasgow, Glasgow, G12 8QQ, Scotland, U.K
| | - Thorfinnur Gunnlaugsson
- School of Chemistry and Trinity Biomedical
Sciences Institute, Trinity College Dublin, University of Dublin, Pearse Street, Dublin 2, Ireland
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18
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Lo WKC, Huff GS, Cubanski JR, Kennedy ADW, McAdam CJ, McMorran DA, Gordon KC, Crowley JD. Comparison of inverse and regular 2-pyridyl-1,2,3-triazole "click" complexes: structures, stability, electrochemical, and photophysical properties. Inorg Chem 2015; 54:1572-87. [PMID: 25615621 DOI: 10.1021/ic502557w] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Two inverse 2-pyridyl-1,2,3-triazole "click" ligands, 2-(4-phenyl-1H-1,2,3-triazol-1-yl)pyridine and 2-(4-benzyl-1H-1,2,3-triazol-1-yl)pyridine, and their palladium(II), platinum(II), rhenium(I), and ruthenium(II) complexes have been synthesized in good to excellent yields. The properties of these inverse "click" complexes have been compared to the isomeric regular compounds using a variety of techniques. X-ray crystallographic analysis shows that the regular and inverse complexes are structurally very similar. However, the chemical and physical properties of the isomers are quite different. Ligand exchange studies and density functional theory (DFT) calculations indicate that metal complexes of the regular 2-(1-R-1H-1,2,3-triazol-4-yl)pyridine (R = phenyl, benzyl) ligands are more stable than those formed with the inverse 2-(4-R-1H-1,2,3-triazol-1-yl)pyridine (R = phenyl, benzyl) "click" chelators. Additionally, the bis-2,2'-bipyridine (bpy) ruthenium(II) complexes of the "click" chelators have been shown to have short excited state lifetimes, which in the inverse triazole case, resulted in ejection of the 2-pyridyl-1,2,3-triazole ligand from the complex. Under identical conditions, the isomeric regular 2-pyridyl-1,2,3-triazole ruthenium(II) bpy complexes are photochemically inert. The absorption spectra of the inverse rhenium(I) and platinum(II) complexes are red-shifted compared to the regular compounds. It is shown that conjugation between the substituent group R and triazolyl unit has a negligible effect on the photophysical properties of the complexes. The inverse rhenium(I) complexes have large Stokes shifts, long metal-to-ligand charge transfer (MLCT) excited state lifetimes, and respectable quantum yields which are relatively solvent insensitive.
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Affiliation(s)
- Warrick K C Lo
- Department of Chemistry, University of Otago , P.O. Box 56, Dunedin 9054, New Zealand
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19
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Tridentate pyrrolylzinc compounds: Synthesis, structures, reactivities and catalytic cyclotrimerization reaction of isocyanate. J Organomet Chem 2015. [DOI: 10.1016/j.jorganchem.2014.11.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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