1
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Group 10 metal-cyanide scaffolds in complexes and extended frameworks: Properties and applications. Coord Chem Rev 2022. [DOI: 10.1016/j.ccr.2021.214310] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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2
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Coffey B, Clough L, Bartkus DD, McClellan IC, Greenberg MW, LaFratta CN, Tanski JM, Anderson CM. Photophysical Properties of Cyclometalated Platinum(II) Diphosphine Compounds in the Solid State and in PMMA Films. ACS OMEGA 2021; 6:28316-28325. [PMID: 34723028 PMCID: PMC8552474 DOI: 10.1021/acsomega.1c04509] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Accepted: 10/04/2021] [Indexed: 05/06/2023]
Abstract
Platinum(II) compounds were synthesized with both chelate cyclometalated ligands and chelate diphosphine ligands. The cyclometalated ligands include phenylpyridine and a benzothiophene-containing ligand. The three new benzothiophene compounds were characterized by nuclear magnetic resonance (NMR) spectroscopy, high-resolution mass spectrometry (HR-MS), and photophysical measurements. In the case of one compound, L1-DPPM, the structure was determined by single crystal X-ray diffraction. The structural coherence of the noncrystalline emissive solid state was measured by X-ray total scattering real space pair distribution function analysis. Quantum yield values of all of the platinum compounds measured in the solid state and in PMMA films were much greater than in solution.
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Affiliation(s)
- Belle Coffey
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road, Annandale-on-Hudson, New York 12504, United States
| | - Lily Clough
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road, Annandale-on-Hudson, New York 12504, United States
| | - Daphne D. Bartkus
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road, Annandale-on-Hudson, New York 12504, United States
| | - Ian C. McClellan
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road, Annandale-on-Hudson, New York 12504, United States
| | - Matthew W. Greenberg
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road, Annandale-on-Hudson, New York 12504, United States
| | - Christopher N. LaFratta
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road, Annandale-on-Hudson, New York 12504, United States
| | - Joseph M. Tanski
- Department
of Chemistry, Vassar College, Poughkeepsie, New York 12604, United States
| | - Craig M. Anderson
- Department
of Chemistry & Biochemistry, Bard College, 30 Campus Road, Annandale-on-Hudson, New York 12504, United States
- . Tel.: 845-752-2356. Fax: 845-752-2339
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3
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Vázquez-Domínguez P, Journaud O, Vanthuyne N, Jacquemin D, Favereau L, Crassous J, Ros A. Helical donor-acceptor platinum complexes displaying dual luminescence and near-infrared circularly polarized luminescence. Dalton Trans 2021; 50:13220-13226. [PMID: 34533555 DOI: 10.1039/d1dt02184b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A series of chiral platina[5]helicenes displaying dual luminescence, i.e., fluorescence between 450 and 600 nm and red/NIR phosphorescence between 700 and 900 nm, has been synthesised, characterised and studied by first-principle calculations. This unusual behavior has been attributed to limited electronic interactions between the d orbitals of the metal and the π-orbitals of the organic ligand on the excited-state. Accordingly, the electron richness of the donor group on the helical ligand does not affect the energy of the phosphorescence process but does play a role on its efficiency. Interestingly, near-infrared circularly polarized luminescence can be obtained for the three complexes with dissymmetry factors up to 3 × 10-3 at 750 nm.
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Affiliation(s)
| | | | - Nicolas Vanthuyne
- Aix Marseille University, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Denis Jacquemin
- Laboratoire CEISAM, UMR 6230, CNRS, Université de Nantes, Nantes, France.
| | | | | | - Abel Ros
- Institute for Chemical Research (CSIC-US), C/Américo Vespucio 49, E-41092 Seville, Spain.
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4
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Li K, Chen Y, Wang J, Yang C. Diverse emission properties of transition metal complexes beyond exclusive single phosphorescence and their wide applications. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2020.213755] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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5
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Toksöz YS, Özyiğit İE, Bilen Ç, Arsu N, Karakuş E. A novel fluorometric measurement system based on triple complex for mercury (II) determination. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2021; 248:119232. [PMID: 33310620 DOI: 10.1016/j.saa.2020.119232] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 11/09/2020] [Accepted: 11/11/2020] [Indexed: 06/12/2023]
Abstract
T-BSA binary complex was formed with non-covalent interactions between fluorometric 2-thioxanthone thioacetic acid and stabilizator bovine serum albumin by fluorescence emission spectroscopy as a sensible and practical method. T-BSA concentration at 1.77 × 10-4 M was obtained as the most suitable and reliable amount for the formation of T-BSA-Hg(II) triple complex. Trace amount of Hg(II) analyses were achieved by this new fluorometric triple complex system as the primary aim. The emission spectra from 350 nm to 650 nm were assayed on fluorometer for Hg(II) concentrations from 1.77 × 10-8 M to 3.53 × 10-4 M under an excitation wavelength of 337 nm. Hg(II) was found to increase the emission intensity of T-BSA by 50% even at 1.77 × 10-7 M Hg(II). So this new system has strong sensitivity to Hg(II) ion. T-BSA-Hg(II) triple complex formation and its fluorometric characterization have not been investigated in literature yet. This study is critically important to provide Hg(II) analyses in wastewater treatments and biological samples for further studies.
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Affiliation(s)
- Yavuz Selim Toksöz
- Department of Chemistry, Yildiz Technical University, Esenler, Istanbul, Turkey
| | | | - Çiğdem Bilen
- Department of Chemistry, Yildiz Technical University, Esenler, Istanbul, Turkey
| | - Nergis Arsu
- Department of Chemistry, Yildiz Technical University, Esenler, Istanbul, Turkey
| | - Emine Karakuş
- Department of Chemistry, Yildiz Technical University, Esenler, Istanbul, Turkey.
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6
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Moitra T, Karak P, Chakraborty S, Ruud K, Chakrabarti S. Behind the scenes of spin-forbidden decay pathways in transition metal complexes. Phys Chem Chem Phys 2021; 23:59-81. [PMID: 33319894 DOI: 10.1039/d0cp05108j] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The interpretation of the ultrafast photophysics of transition metal complexes following photo-absorption is quite involved as the heavy metal center leads to a complicated and entangled singlet-triplet manifold. This opens up multiple pathways for deactivation, often with competitive rates. As a result, intersystem crossing (ISC) and phosphorescence are commonly observed in transition metal complexes. A detailed understanding of such an excited-state structure and dynamics calls for state-of-the-art experimental and theoretical methodologies. In this review, we delve into the inability of non-relativistic quantum theory to describe spin-forbidden transitions, which can be overcome by taking into account spin-orbit coupling, whose importance grows with increasing atomic number. We present the quantum chemical theory of phosphorescence and ISC together with illustrative examples. Finally, a few applications are highlighted, bridging the gap between theoretical studies and experimental applications, such as photofunctional materials.
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Affiliation(s)
- Torsha Moitra
- DTU Chemistry, Technical University of Denmark, Kemitorvet Bldg 207, DK-2800 Kongens Lyngby, Denmark
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7
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Zhang X, Hou Y, Xiao X, Chen X, Hu M, Geng X, Wang Z, Zhao J. Recent development of the transition metal complexes showing strong absorption of visible light and long-lived triplet excited state: From molecular structure design to photophysical properties and applications. Coord Chem Rev 2020. [DOI: 10.1016/j.ccr.2020.213371] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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8
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Shimizu M, Nagano S, Kinoshita T. Dual Emission from Precious Metal‐Free Luminophores Consisting of C, H, O, Si, and S/P at Room Temperature. Chemistry 2020; 26:5162-5167. [DOI: 10.1002/chem.201905820] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2019] [Revised: 01/15/2020] [Indexed: 12/19/2022]
Affiliation(s)
- Masaki Shimizu
- Faculty of Molecular Chemistry and EngineeringKyoto Institute of Technology 1 Hashikami-cho, Matsugasaki, Sakyo-ku Kyoto 606-8585 Japan
| | - Sho Nagano
- Faculty of Molecular Chemistry and EngineeringKyoto Institute of Technology 1 Hashikami-cho, Matsugasaki, Sakyo-ku Kyoto 606-8585 Japan
| | - Takumi Kinoshita
- Faculty of Molecular Chemistry and EngineeringKyoto Institute of Technology 1 Hashikami-cho, Matsugasaki, Sakyo-ku Kyoto 606-8585 Japan
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9
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Dansholm CN, Junker AKR, Nielsen LG, Kofod N, Pal R, Sørensen TJ. π-Expanded Thioxanthones - Engineering the Triplet Level of Thioxanthone Sensitizers for Lanthanide-Based Luminescent Probes with Visible Excitation. Chempluschem 2020; 84:1778-1788. [PMID: 31943860 DOI: 10.1002/cplu.201900309] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Revised: 06/12/2019] [Indexed: 12/17/2022]
Abstract
Bright lanthanide based probes for optical bioimaging must rely on the antenna principle, where the lanthanide-centred excited state is formed by a complex sensitization process. Efficient sensitization of lanthanide-centred emission occurs via triplet states centred on the sensitizing chromophore. Here, the triplet state of thioxanthone chromophores is modulated by extending the π-system. Three thioxanthone chromophores-thioxanthone, benzo[c]thioxanthone, and naphtho[2,3-c]thioxanthone were synthesised and characterised. The triplet state energies and lifetimes is found to change as expected, and two dyes are found to be suitable sensitizers for europium(iii) luminescence. Reactive derivatives of thioxanthone and benzo[c]thioxanthone were prepared and coupled to a 1,4,7,10-tetraazacyclododecane-1,4,7-triacetic acid (DO3A) lanthanide binding pocket. The photophysics and the performance in optical bioimaging of the resulting europium(iii) complexes were investigated. It is concluded that while the energetics favour efficient sensitization, the solution structure does not. While it was found that the complexes are too lipophilic to be efficient luminescent probes for optical bioimaging, we successfully demonstrated bioimaging using europium(iii) luminescence following 405 nm excitation.
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Affiliation(s)
- Charlotte Nybro Dansholm
- Nano-Science Center & Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100, København Ø, Denmark
| | - Anne Kathrine R Junker
- Nano-Science Center & Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100, København Ø, Denmark
| | - Lea G Nielsen
- Nano-Science Center & Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100, København Ø, Denmark
| | - Nicolaj Kofod
- Nano-Science Center & Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100, København Ø, Denmark
| | - Robert Pal
- Department of Chemistry, Durham University Lower Mountjoy, Stockton Road, Durham DH1 3LE, UK
| | - Thomas Just Sørensen
- Nano-Science Center & Department of Chemistry, University of Copenhagen, Universitetsparken 5, 2100, København Ø, Denmark
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10
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Belyaev A, Slavova SO, Solovyev IV, Sizov VV, Jänis J, Grachova EV, Koshevoy IO. Solvatochromic dual luminescence of Eu–Au dyads decorated with chromophore phosphines. Inorg Chem Front 2020. [DOI: 10.1039/c9qi01015g] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Chromophore-containing phosphines produce highly solvatochromic gold(i) fluorophores. Their combination with red-emitting Eu centers offers a facile approach to dual emissive complexes with widely tunable luminescence characteristics.
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Affiliation(s)
- Andrey Belyaev
- Department of Chemistry
- University of Eastern Finland
- Joensuu
- Finland
| | - Sofia O. Slavova
- Institute of General and Inorganic Chemistry
- Bulgarian Academy of Sciences
- Sofia
- Bulgaria
| | - Igor V. Solovyev
- Institute of Chemistry
- St. Petersburg State University
- St. Petersburg
- Russia
| | - Vladimir V. Sizov
- Institute of Chemistry
- St. Petersburg State University
- St. Petersburg
- Russia
| | - Janne Jänis
- Department of Chemistry
- University of Eastern Finland
- Joensuu
- Finland
| | - Elena V. Grachova
- Institute of Chemistry
- St. Petersburg State University
- St. Petersburg
- Russia
| | - Igor O. Koshevoy
- Department of Chemistry
- University of Eastern Finland
- Joensuu
- Finland
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11
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12
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A highly selective and sensitive sensor with imine and phenyl-ethynyl-phenyl units for the visual and fluorescent detection of copper in water. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.111893] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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13
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Irmler P, Gogesch FS, Mang A, Bodensteiner M, Larsen CB, Wenger OS, Winter RF. Directing energy transfer in Pt(bodipy)(mercaptopyrene) dyads. Dalton Trans 2019; 48:11690-11705. [PMID: 31265019 DOI: 10.1039/c9dt01737b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We report on the photophysical properties of three dyads that combine a 4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (bodipy, BDP) and a mercaptopyrene (SPyr) dye ligand at a Pt(PEt3)2 fragment. σ-Bonding of the dyes to the Pt ion promotes intersystem crossing (ISC) via the external heavy atom effect. The coupling of efficient ISC with charge-transfer from the electron-rich mercaptopyrene to the electron-accepting BDP ligand (PB-CT) gives rise to a multitude of (potentially) emissive states. This culminates in the presence of four different emissions for the mono- and dinuclear complexes BPtSPyr and BPtSPyrSPtB with an unsubstituted BDP ligand and either a terminal 1-mercaptopyrene or a bridging pyrene-1,6-dithiolate ligand. Thus, in fluid solution, near IR emission at 724 nm from the 3PB-CT state is observed with a quantum yield of up to 15%. Excitation into the BDP-based 1ππ* or the pyrene-based 1ππ* band additionally trigger fluorescence and phosphorescence emissions from the BDP-centred 1ππ* and 3ππ* states. In frozen solution, at 77 K, phosphorescence from the pyrene ligand becomes the prominent emission channel, while PB-CT emission is absent. Alkylation of the BDP ligand in KBPtSPyr funnels all excitation energy into fluorescence and phosphorescence emissions from the KBDP ligand. The assignments of the various excited states and the deactivation cascades were probed by absorption and emission spectroscopy, transient absorption spectroscopy, electrochemical and UV/Vis/NIR spectroelectrochemical measurements, and by quantum chemical calculations. Our conclusions are further corroborated with the aid of suitable reference compounds comprising of just one chromophore. All dyads are triplet sensitizers and are able to generate singlet oxygen.
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Affiliation(s)
- Peter Irmler
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, D-78457 Konstanz, Germany.
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14
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Junker AKR, Sørensen TJ. Rationalizing substituent effects in 1-azathioxanthone photophysics. Methods Appl Fluoresc 2017; 6:014002. [PMID: 29160773 DOI: 10.1088/2050-6120/aa9c16] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The influence of an electron donating substituent on the photophysical properties of 1-azathioxanthone dyes has been investigated using optical spectroscopy and theoretical models. The motivation behind the study is based on the fact that thioxanthones are efficient triplet sensitizers, and thus promising sensitizers for lanthanide centered emission. By adding an aza group to one of the phenyl ring systems, direct coordination to a lanthanide center becomes possible, which makes azathoixanthones great candidates as antenna chromophores in lanthanide(III) based dyes. Here, three 1-azathioxanthone derivatives have been synthesized targeting efficient triplet formation following absorption in the visible range of the spectrum. This is achieved by adding methoxy groups to the 1-azathioxanthone core. The derivatives were characterized using absorption, emission, and time-gated emission spectroscopy, where fluorescent quantum yields, singlet and triplet excited states lifetimes were determined. The experimentally determined photophysical properties of the three 1-azathioxanthone compounds are contrasted to those of the parent thioxanthone and is rationalized using the Strickler-Berg equation, Hückel MO theory, and Dewar's rules in combination with computational chemistry. We find that the transition energies follow predictions, but that the overall photophysical properties are determined by the relative energies as well as the nature of the involved states in both the singlet and the triplet excited state manifolds.
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Affiliation(s)
- Anne Kathrine R Junker
- Nano-Science Center & Department of Chemistry, University of Copenhagen, Universitetsparken 5, DK-2100 København Ø, Denmark
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15
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Shakirova JR, Tomashenko OA, Grachova EV, Starova GL, Sizov VV, Khlebnikov AF, Tunik SP. Gold(I)–Alkynyl Complexes with an N‐Donor Heterocyclic Ligand: Synthesis and Photophysical Properties. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700731] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Julia R. Shakirova
- Institute of Chemistry St. Petersburg State University 7/9 Universitetskaya emb. 199034 St. Petersburg Russia
| | - Olesya A. Tomashenko
- Institute of Chemistry St. Petersburg State University 7/9 Universitetskaya emb. 199034 St. Petersburg Russia
| | - Elena V. Grachova
- Institute of Chemistry St. Petersburg State University 7/9 Universitetskaya emb. 199034 St. Petersburg Russia
| | - Galina L. Starova
- Institute of Chemistry St. Petersburg State University 7/9 Universitetskaya emb. 199034 St. Petersburg Russia
| | - Vladimir V. Sizov
- Institute of Chemistry St. Petersburg State University 7/9 Universitetskaya emb. 199034 St. Petersburg Russia
| | - Alexander F. Khlebnikov
- Institute of Chemistry St. Petersburg State University 7/9 Universitetskaya emb. 199034 St. Petersburg Russia
| | - Sergey P. Tunik
- Institute of Chemistry St. Petersburg State University 7/9 Universitetskaya emb. 199034 St. Petersburg Russia
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16
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Yoshida T, Izougu DC, Iwasawa D, Ogata S, Hasegawa M, Breedlove BK, Cosquer G, Wernsdorfer W, Yamashita M. Multiple Magnetic Relaxation Pathways and Dual-Emission Modulated by a Heterometallic Tb-Pt Bonding Environment. Chemistry 2017; 23:10527-10531. [DOI: 10.1002/chem.201702989] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Takefumi Yoshida
- Department of Chemistry; Graduate School of Science; Tohoku University; 6-3 Aza-aoba, Aramaki Sendai 980-8578 Japan
| | - David Chukwuma Izougu
- Department of Chemistry; Graduate School of Science; Tohoku University; 6-3 Aza-aoba, Aramaki Sendai 980-8578 Japan
- Department of Pure & Industrial Chemistry; University of Nigeria; 410001 Nsukka Nigeria
| | - Daichi Iwasawa
- Department of Chemistry and Biological Science; College of Science and Engineering; Aoyama-Gakuin University, Fuchinobe, Chuo-ku, Sagamihara; Kanagawa 252-5258 Japan
| | - Shuhei Ogata
- Department of Chemistry and Biological Science; College of Science and Engineering; Aoyama-Gakuin University, Fuchinobe, Chuo-ku, Sagamihara; Kanagawa 252-5258 Japan
| | - Miki Hasegawa
- Department of Chemistry and Biological Science; College of Science and Engineering; Aoyama-Gakuin University, Fuchinobe, Chuo-ku, Sagamihara; Kanagawa 252-5258 Japan
| | - Brian K. Breedlove
- Department of Chemistry; Graduate School of Science; Tohoku University; 6-3 Aza-aoba, Aramaki Sendai 980-8578 Japan
- CREST(JST); 4-1-8 Kawaguchi Saitama 332-0012 Japan
| | - Goulven Cosquer
- Department of Chemistry; Graduate School of Science; Tohoku University; 6-3 Aza-aoba, Aramaki Sendai 980-8578 Japan
- CREST(JST); 4-1-8 Kawaguchi Saitama 332-0012 Japan
| | | | - Masahiro Yamashita
- Department of Chemistry; Graduate School of Science; Tohoku University; 6-3 Aza-aoba, Aramaki Sendai 980-8578 Japan
- WPI-Advanced Institute for Materials Research; Tohoku University; 2-1-1 Katahira Sendai 980-8577 Japan
- School of Materials Science and Engineering; Nankai University; Tianjin 300350 China
- CREST(JST); 4-1-8 Kawaguchi Saitama 332-0012 Japan
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17
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Shafikov MZ, Suleymanova AF, Kozhevnikov DN, König B. Tuning the Excimer Emission of Amphiphilic Platinum(II) Complexes Mediated by Phospholipid Vesicles. Inorg Chem 2017; 56:4885-4897. [DOI: 10.1021/acs.inorgchem.6b03100] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marsel Z. Shafikov
- Ural Federal University, Mira 19, Ekaterinburg, 620002, Russia
- I. Postovsky Institute of Organic Synthesis, Ekaterinburg, 620990, Russia
| | | | | | - Burkhard König
- Institut für Organische Chemie, Universität Regensburg, Universitätsstraße 31, D-93053 Regensburg, Germany
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18
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Geist F, Jackel A, Irmler P, Linseis M, Malzkuhn S, Kuss-Petermann M, Wenger OS, Winter RF. Directing Energy Transfer in Panchromatic Platinum Complexes for Dual Vis–Near-IR or Dual Visible Emission from σ-Bonded BODIPY Dyes. Inorg Chem 2016; 56:914-930. [DOI: 10.1021/acs.inorgchem.6b02549] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Fabian Geist
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, D-78457 Konstanz, Germany
| | - Andrej Jackel
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, D-78457 Konstanz, Germany
| | - Peter Irmler
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, D-78457 Konstanz, Germany
| | - Michael Linseis
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, D-78457 Konstanz, Germany
| | - Sabine Malzkuhn
- Department of Chemistry, University of Basel, St.-Johanns-Ring
19, CH-4056 Basel, Switzerland
| | - Martin Kuss-Petermann
- Department of Chemistry, University of Basel, St.-Johanns-Ring
19, CH-4056 Basel, Switzerland
| | - Oliver S. Wenger
- Department of Chemistry, University of Basel, St.-Johanns-Ring
19, CH-4056 Basel, Switzerland
| | - Rainer F. Winter
- Fachbereich Chemie, Universität Konstanz, Universitätsstraße 10, D-78457 Konstanz, Germany
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19
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Iturbe C, Loeb B, Barrera M, Brito I, Cañete A. Design and synthesis of non-symmetric phenylpyridine type ligands. Experimental and theoretical studies of their corresponding iridium complexes. Polyhedron 2016. [DOI: 10.1016/j.poly.2016.07.029] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Malvolti F, Rouxel C, Grelaud G, Toupet L, Roisnel T, Barlow A, Yang X, Wang G, Abdul Razak FI, Stranger R, Cifuentes MP, Humphrey MG, Mongin O, Blanchard‐Desce M, Paul‐Roth CO, Paul F. Iron and Ruthenium Alkynyl Complexes with 2‐Fluorenyl Groups: Some Linear and Nonlinear Optical Absorption Properties. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201600598] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Floriane Malvolti
- Institut des Sciences Chimiques de RennesCNRS (UMR 6226)Université de Rennes 1Campus de Beaulieu35042Rennes CedexFrance
| | - Cedric Rouxel
- Institut des Sciences Chimiques de RennesCNRS (UMR 6226)Université de Rennes 1Campus de Beaulieu35042Rennes CedexFrance
| | - Guillaume Grelaud
- Institut des Sciences Chimiques de RennesCNRS (UMR 6226)Université de Rennes 1Campus de Beaulieu35042Rennes CedexFrance
- Research School of ChemistryAustralian National UniversityACT 2601CanberraAustralia
| | - Loic Toupet
- Institut de Physique de Rennes (IPR)CNRS (UMR 6251)Université de Rennes 1Campus de Beaulieu35042Rennes CedexFrance
| | - Thierry Roisnel
- Institut des Sciences Chimiques de RennesCNRS (UMR 6226)Université de Rennes 1Campus de Beaulieu35042Rennes CedexFrance
| | - Adam Barlow
- Research School of ChemistryAustralian National UniversityACT 2601CanberraAustralia
| | - Xinwei Yang
- Research School of ChemistryAustralian National UniversityACT 2601CanberraAustralia
| | - Genmiao Wang
- Research School of ChemistryAustralian National UniversityACT 2601CanberraAustralia
| | | | - Robert Stranger
- Research School of ChemistryAustralian National UniversityACT 2601CanberraAustralia
| | - Marie P. Cifuentes
- Research School of ChemistryAustralian National UniversityACT 2601CanberraAustralia
| | - Mark G. Humphrey
- Research School of ChemistryAustralian National UniversityACT 2601CanberraAustralia
| | - Olivier Mongin
- Institut des Sciences Chimiques de RennesCNRS (UMR 6226)Université de Rennes 1Campus de Beaulieu35042Rennes CedexFrance
| | | | - Christine O. Paul‐Roth
- Institut des Sciences Chimiques de RennesCNRS (UMR 6226)Université de Rennes 1Campus de Beaulieu35042Rennes CedexFrance
| | - Frédéric Paul
- Institut des Sciences Chimiques de RennesCNRS (UMR 6226)Université de Rennes 1Campus de Beaulieu35042Rennes CedexFrance
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21
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Shafikov MZ, Kozhevnikov DN, Bodensteiner M, Brandl F, Czerwieniec R. Modulation of Intersystem Crossing Rate by Minor Ligand Modifications in Cyclometalated Platinum(II) Complexes. Inorg Chem 2016; 55:7457-66. [PMID: 27388146 DOI: 10.1021/acs.inorgchem.6b00704] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
Photophysical properties of four new platinum(II) complexes comprising extended ppy (Hppy = 2-phenylpyridine) and thpy (Hthpy = 2-(2'-thienyl)pyridine) cyclometalated ligands and acetylacetonate (acac) are reported. Substitution of the benzene ring of Pt-ppy complexes 1 and 2 with a more electron-rich thiophene of Pt-thpy complexes 3 and 4 leads to narrowing of the HOMO-LUMO gap and thus to a red shift of the lowest energy absorption band and phosphorescence band, as expected for low-energy excited states of the intraligand/metal-to-ligand charge transfer character. However, in addition to these conventional spectral shifts, another, at first unexpected, substitution effect occurs. Pt-thpy complexes 3 and 4 are dual emissive showing fluorescence about 6000 cm(-1) (∼0.75 eV) higher in energy relative to the phosphorescence band, while for Pt-ppy complexes 1 and 2 only phosphorescence is observed. For dual-emissive complexes 3 and 4, ISC rates kISC are estimated to be in order of 10(9)-10(10) s(-1), while kISC of Pt-ppy complexes 1 and 2 is much faster amounting to 10(12) s(-1) or more. The relative intensities of the fluorescence and phosphorescence signals of Pt-thpy complexes 3 and 4 depend on the excitation wavelength, showing that hyper-intersystem crossing (HISC) in these complexes is observably significant.
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Affiliation(s)
- Marsel Z Shafikov
- Ural Federal University , Mira 19, Ekaterinburg, 620002, Russia.,I. Postovsky Institute of Organic Synthesis , Ekaterinburg, 620041, Russia
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22
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Sieck C, Tay MG, Thibault MH, Edkins RM, Costuas K, Halet JF, Batsanov AS, Haehnel M, Edkins K, Lorbach A, Steffen A, Marder TB. Reductive Coupling of Diynes at Rhodium Gives Fluorescent Rhodacyclopentadienes or Phosphorescent Rhodium 2,2'-Biphenyl Complexes. Chemistry 2016; 22:10523-32. [PMID: 27355689 DOI: 10.1002/chem.201601912] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2016] [Indexed: 01/08/2023]
Abstract
Reactions of [Rh(κ(2) -O,O-acac)(PMe3 )2 ] (acac=acetylacetonato) and α,ω-bis(arylbutadiynyl)alkanes afford two isomeric types of MC4 metallacycles with very different photophysical properties. As a result of a [2+2] reductive coupling at Rh, 2,5-bis(arylethynyl)rhodacyclopentadienes (A) are formed, which display intense fluorescence (Φ=0.07-0.54, τ=0.2-2.5 ns) despite the presence of the heavy metal atom. Rhodium biphenyl complexes (B), which show exceptionally long-lived (hundreds of μs) phosphorescence (Φ=0.01-0.33) at room temperature in solution, have been isolated as a second isomer originating from an unusual [4+2] cycloaddition reaction and a subsequent β-H-shift. We attribute the different photophysical properties of isomers A and B to a higher excited state density and a less stabilized T1 state in the biphenyl complexes B, allowing for more efficient intersystem crossing S1 →Tn and T1 →S0 . Control of the isomer distribution is achieved by modification of the bis- (diyne) linker length, providing a fundamentally new route to access photoactive metal biphenyl compounds.
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Affiliation(s)
- Carolin Sieck
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Meng Guan Tay
- Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, UK.,Faculty of Resource Science and Technology, Universiti Malaysia Sarawak, 94300, Kota Samarahan, Malaysia
| | | | - Robert M Edkins
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Karine Costuas
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, 35042, Rennes Cedex, France
| | - Jean-François Halet
- Institut des Sciences Chimiques de Rennes, UMR 6226 CNRS, Université de Rennes 1, 35042, Rennes Cedex, France
| | - Andrei S Batsanov
- Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, UK
| | - Martin Haehnel
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Katharina Edkins
- School of Medicine, Pharmacy and Health, Durham University, University Boulevard, Stockton-on-Tees, TS17 6BH, UK
| | - Andreas Lorbach
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Andreas Steffen
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.,Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, UK
| | - Todd B Marder
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074, Würzburg, Germany. .,Department of Chemistry, Durham University, South Road, Durham, DH1 3LE, UK.
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23
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Wang Y, Fan J, Li T, Wang Q, Shi J, Qu Z, Tan H, Liu Y, Zhu W. Broadband spectra with fluorescence and phosphorescence dual emission from bichromophoric platinum metallomesogens containing a 6,12-dihydro-indeno[1,2-b]fluorene linkage. RSC Adv 2016. [DOI: 10.1039/c6ra03391a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Two bichromophoric platinum metallomesogens, FJ-1 and FJ-2, exhibited fluorescence (1π,π*) and phosphorescence (3π,π*) dual emissions in solution. Their photophysical properties were detailedly investigated by experiment and theory calculation.
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Affiliation(s)
- Yafei Wang
- College of Chemistry
- Key Lab of Environment-Friendly Chemistry and Application of the Ministry of Education
- Xiangtan University
- Xiangtan 411105
- China
| | - Jiang Fan
- College of Chemistry
- Key Lab of Environment-Friendly Chemistry and Application of the Ministry of Education
- Xiangtan University
- Xiangtan 411105
- China
| | - Tianyi Li
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
- PR China
| | - Qiong Wang
- College of Chemistry
- Key Lab of Environment-Friendly Chemistry and Application of the Ministry of Education
- Xiangtan University
- Xiangtan 411105
- China
| | - Junwei Shi
- College of Chemistry
- Key Lab of Environment-Friendly Chemistry and Application of the Ministry of Education
- Xiangtan University
- Xiangtan 411105
- China
| | - Zuoming Qu
- College of Chemistry
- Key Lab of Environment-Friendly Chemistry and Application of the Ministry of Education
- Xiangtan University
- Xiangtan 411105
- China
| | - Hua Tan
- College of Chemistry
- Key Lab of Environment-Friendly Chemistry and Application of the Ministry of Education
- Xiangtan University
- Xiangtan 411105
- China
| | - Yu Liu
- College of Chemistry
- Key Lab of Environment-Friendly Chemistry and Application of the Ministry of Education
- Xiangtan University
- Xiangtan 411105
- China
| | - Weiguo Zhu
- School of Materials Science & Engineering
- Changzhou University
- Changzhou 213164
- PR China
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24
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Irmler P, Winter RF. Complexes trans-Pt(BODIPY)X(PEt3)2: excitation energy-dependent fluorescence and phosphorescence emissions, oxygen sensing and photocatalysis. Dalton Trans 2016; 45:10420-34. [DOI: 10.1039/c6dt01623e] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Complexes trans-Pt(BODIPY)X(PEt3)2 exhibit dual fluorescence and phosphorescence emissions, whose intensities are modulated by the anionic ligand X− and the excitation wavelengths. They constitute efficient single-component 3O2 sensors and photocatalysts for aereal photooxidations with quantum yields near unity.
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Affiliation(s)
- Peter Irmler
- Fachbereich Chemie der Universität Konstanz
- D-78464 Konstanz
- Germany
| | - Rainer F. Winter
- Fachbereich Chemie der Universität Konstanz
- D-78464 Konstanz
- Germany
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25
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Geist F, Jackel A, Winter RF. Ligand Based Dual Fluorescence and Phosphorescence Emission from BODIPY Platinum Complexes and Its Application to Ratiometric Singlet Oxygen Detection. Inorg Chem 2015; 54:10946-57. [DOI: 10.1021/acs.inorgchem.5b01969] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fabian Geist
- Fachbereich Chemie der Universität Konstanz, Universitätsstraße 10, D-78464 Konstanz, Germany
| | - Andrej Jackel
- Fachbereich Chemie der Universität Konstanz, Universitätsstraße 10, D-78464 Konstanz, Germany
| | - Rainer F. Winter
- Fachbereich Chemie der Universität Konstanz, Universitätsstraße 10, D-78464 Konstanz, Germany
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26
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Turning-On of Coumarin Phosphorescence in Acetylacetonato Platinum Complexes of Cyclometalated Pyridyl-Substituted Coumarins. INORGANICS 2015. [DOI: 10.3390/inorganics3020055] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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