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Metal Peptide Conjugates in Cell and Tissue Imaging and Biosensing. Top Curr Chem (Cham) 2022; 380:30. [PMID: 35701677 PMCID: PMC9197911 DOI: 10.1007/s41061-022-00384-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Accepted: 05/10/2022] [Indexed: 11/05/2022]
Abstract
Metal complex luminophores have seen dramatic expansion in application as imaging probes over the past decade. This has been enabled by growing understanding of methods to promote their cell permeation and intracellular targeting. Amongst the successful approaches that have been applied in this regard is peptide-facilitated delivery. Cell-permeating or signal peptides can be readily conjugated to metal complex luminophores and have shown excellent response in carrying such cargo through the cell membrane. In this article, we describe the rationale behind applying metal complexes as probes and sensors in cell imaging and outline the advantages to be gained by applying peptides as the carrier for complex luminophores. We describe some of the progress that has been made in applying peptides in metal complex peptide-driven conjugates as a strategy for cell permeation and targeting of transition metal luminophores. Finally, we provide key examples of their application and outline areas for future progress.
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Ahoulou S, Vilà N, Pillet S, Carteret C, Schaniel D, Walcarius A. Multi-stimuli Photo and Redox-active Nanostructured Mesoporous Silica Films on Transparent Electrodes. Chemphyschem 2021; 22:2464-2477. [PMID: 34708493 DOI: 10.1002/cphc.202100608] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 09/24/2021] [Indexed: 11/12/2022]
Abstract
Silica matrices hosting transition metal guest complexes may offer remarkable platforms for the development of advanced functional devices. We report here the elaboration of ordered and vertically oriented mesoporous silica thin films containing covalently attached tris(bipyridine)iron derivatives using a combination of electrochemically assisted self-assembly (EASA) method and Huisgen cycloaddition reaction. Such a versatile approach is primarily used to bind nitrogen-based chelating ligands such as (4-[(2-propyn-1-yloxy)]4'-methyl-2,2'-bypiridine, bpy') inside the nanochannels. Further derivatization of the bpy'-functionalized silica thin films is then achieved via a subsequent in-situ complexation step to generate [Fe(bpy)2 (bpy')]2+ inside the mesopore channels. After giving spectroscopic evidences for the presence of such complexes in the functionalized film, electrochemistry is used to transform the confined diamagnetic (S=0) F e L S b p y 2 b p y ' 2 + species to paramagnetic (S=1/2) oxidized F e L S b p y 2 b p y ' 3 + species in a reversible way, while blue light irradiation (λ=470 nm) enables populating the short-lived paramagnetic (S=2) F e H S b p y 2 b p y ' 2 + excited state. [Fe(bpy)2 (bpy')]2+ -functionalized ordered films are therefore both electro- and photo-active through the manipulation of the oxidation state and spin state of the confined complexes, paving the way for their integration in optoelectronic devices.
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Affiliation(s)
- Samuel Ahoulou
- Université de Lorraine, CNRS, LCPME UMR 7564, 54000, Nancy, France.,Université de Lorraine, CRM2 UMR 7036, 54000, Nancy, France
| | - Neus Vilà
- Université de Lorraine, CNRS, LCPME UMR 7564, 54000, Nancy, France
| | | | - Cédric Carteret
- Université de Lorraine, CNRS, LCPME UMR 7564, 54000, Nancy, France
| | | | - Alain Walcarius
- Université de Lorraine, CNRS, LCPME UMR 7564, 54000, Nancy, France
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Yersin H, Braun D, Gallhuber E, Hensler G. Lowest excited states of [Ru(bpy)3]X2host material, [Os(bpy)3]2+guest complexes, and radiationless energy transfer. ACTA ACUST UNITED AC 2014. [DOI: 10.1002/bbpc.19870911128] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Bräm O, Messina F, El-Zohry AM, Cannizzo A, Chergui M. Polychromatic femtosecond fluorescence studies of metal–polypyridine complexes in solution. Chem Phys 2012. [DOI: 10.1016/j.chemphys.2011.11.022] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Schramm F, Meded V, Fliegl H, Fink K, Fuhr O, Qu Z, Klopper W, Finn S, Keyes TE, Ruben M. Expanding the coordination cage: a ruthenium(II)-polypyridine complex exhibiting high quantum yields under ambient conditions. Inorg Chem 2010; 48:5677-84. [PMID: 19507851 DOI: 10.1021/ic802040v] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A mononuclear ruthenium(II) polypyridyl complex with an enlarged terpyridyl coordination cage was synthesized by the formal introduction of a carbon bridge between the coordinating pyridine rings. Structurally, the ruthenium(II) complex shows an almost perfect octahedral N6 coordination around the central Ru(II) metal ion. The investigation of the photophysical properties reveals a triplet metal-to-ligand charge transfer emission with an unprecedented quantum yield of 13% and a lifetime of 1.36 mus at room temperature and in the presence of air oxygen. An exceptional small energy gap between light absorption and light emission, or Stokes shift, was detected. Additionally, time-dependent density functional theory calculations were carried out in order to characterize the ground state and both the singlet and triplet excited states. The exceptional properties of the new compound open the perspective of exploiting terpyridyl-like ruthenium complexes in photochemical devices under ambient conditions.
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Affiliation(s)
- Frank Schramm
- Institute of Nanotechnology, Forschungszentrum Karlsruhe, Karlsruhe, Germany
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Heully JL, Alary F, Boggio-Pasqua M. Spin-orbit effects on the photophysical properties of Ru(bpy)32+. J Chem Phys 2009; 131:184308. [DOI: 10.1063/1.3254196] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Murali M, Palaniandavar M. Synthesis, spectral and electrochemical properties of mixed-ligand ruthenium(II) complexes of bis(pyrid-2-yl)- and bis(benzimidazol-2-yl)-dithioether ligands: Effect of an asymmetric diimine co-ligand. Polyhedron 2007. [DOI: 10.1016/j.poly.2007.04.040] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Braun D, Gallhuber E, Hensler G, Yersin H. Site selective spectra of the lowest excited states of [Os(bpy)3]2+ in [Ru1-x Os x (bpy)3]X 2(X = PF6, AsF6, SbF6). Mol Phys 2006. [DOI: 10.1080/00268978900101171] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Dieter Braun
- a Institut für Physikalische und Theoretische Chemie , Universität Regensburg , D-8400 , Regensburg , F.R. Germany
| | - Erich Gallhuber
- a Institut für Physikalische und Theoretische Chemie , Universität Regensburg , D-8400 , Regensburg , F.R. Germany
- b BASF AG , D-6700 , Ludwigshafen , F.R. Germany
| | - Gerold Hensler
- a Institut für Physikalische und Theoretische Chemie , Universität Regensburg , D-8400 , Regensburg , F.R. Germany
- c Bayerisches Landesamt für Umweltschutz , D-8000 , München , F.R. Germany
| | - Hartmut Yersin
- a Institut für Physikalische und Theoretische Chemie , Universität Regensburg , D-8400 , Regensburg , F.R. Germany
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Murali M, Palaniandavar M. Synthesis, structure and spectral and redox properties of new mixed ligand monomeric and dimeric Ru(II) complexes: predominant formation of the "cis-alpha" diastereoisomer and unusual 3MC emission by dimeric complexes. Dalton Trans 2005:730-43. [PMID: 16429178 DOI: 10.1039/b512382h] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The tetradentate ligands 1,8-bis(pyrid-2-yl)-3,6-dithiaoctane (pdto) and 1,8-bis(benzimidazol-2-yl)-3,6-dithiaoctane (bbdo) form the complexes [Ru(pdto)(mu-Cl)](2)(ClO(4))(2) 1 and [Ru(bbdo)(mu-Cl)](2)(ClO(4))(2) 2 respectively. The new di-mu-chloro dimers 1 and 2 undergo facile symmetrical bridge cleavage reactions with the diimine ligands 2,2'-bipyridine (bpy) and dipyridylamine (dpa) to form the six-coordinate complexes [Ru(pdto)(bpy)](ClO(4))(2) 3, [Ru(bbdo)(bpy)](ClO(4))(2) 4, [Ru(pdto)(dpa)](ClO(4))(2) 5 and [Ru(bbdo)(dpa)](ClO(4))(2) 6 and with the triimine ligand 2,2':6,2''-terpyridine (terpy) to form the unusual seven-coordinate complexes [Ru(pdto)(terpy)](ClO(4))(2) 7 and [Ru(bbdo)(terpy)](ClO(4))(2) 8. In 1 the dimeric cation [Ru(pdto)(mu-Cl)](2)(2+) is made up of two approximately octahedrally coordinated Ru(II) centers bridged by two chloride ions, which constitute a common edge between the two Ru(II) octahedra. Each ruthenium is coordinated also to two pyridine nitrogen and two thioether sulfur atoms of the tetradentate ligand. The ligand pdto is folded around Ru(II) as a result of the cis-dichloro coordination, which corresponds to a "cis-alpha" configuration [DeltaDelta/LambdaLambda(rac) diastereoisomer] supporting the possibility of some attractive pi-stacking interactions between the parallel py rings at each ruthenium atom. The ruthenium atom in the complex cations 3a and 4 exhibit a distorted octahedral coordination geometry composed of two nitrogen atoms of the bpy and the two thioether sulfur and two py/bzim nitrogen atoms of the pdto/bbdo ligand, which is actually folded around Ru(II) to give a "cis-alpha" isomer. The molecule of complex 5 contains a six-coordinated ruthenium atom chelated by pdto and dpa ligands in the expected distorted octahedral fashion. The (1)H and (13)C NMR spectral data of the complexes throw light on the nature of metal-ligand bonding and the conformations of the chelate rings, which indicates that the dithioether ligands maintain their tendency to fold themselves even in solution. The bis-mu-chloro dimers 1 and 2 show a spin-allowed but Laporte-forbidden t(2g)(6)((1)A(1g))--> t(2g)(5) e(g)(1)((1)T(1g), (1)T(2g)) d-d transition. They also display an intense Ru(II) dpi--> py/bzim (pi*) metal-to-ligand charge transfer (MLCT) transition. The mononuclear complexes 3-8 exhibit dpi-->pi* MLCT transitions in the range 340-450 nm. The binuclear complexes 1 and 2 exhibit a ligand field ((3)MC) luminescence even at room temperature, whereas the mononuclear complexes 3 and 4 show a ligand based radical anion ((3)MLCT) luminescence. The binuclear complexes 1 and 2 undergo two successive oxidation processes corresponding to successive Ru(II)/Ru(III) couples, affording a stable mixed-valence Ru(II)Ru(III) state (K(c): 1, 3.97 x 10(6); 2, 1.10 x 10(6)). The mononuclear complexes 3-7 exhibit only one while 8 shows two quasi-reversible metal-based oxidative processes. The coordinated 'soft' thioether raises the redox potentials significantly by stabilising the 'soft' Ru(II) oxidation state. One or two ligand-based reduction processes were also observed for the mononuclear complexes.
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Affiliation(s)
- Mariappan Murali
- School of Chemistry, Bharathidasan University, Tiruchirappalli, 620 024 Tamil Nadu, India
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Energy transfer and harvesting in [Ru1−xOsx(bpy)3](PF6)2 and {Λ-[Ru(bpy)3]Δ-[Os(bpy)3]}(PF6)4. Coord Chem Rev 2002. [DOI: 10.1016/s0010-8545(02)00106-6] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Coutant MA, Le T, Castagnola N, Dutta PK. Zeolite-Induced Solvation Effects on Excited-State Properties of Ru(bpy)32+: Implications for Intrazeolitic Photochemical Quenching Reactions. J Phys Chem B 2000. [DOI: 10.1021/jp000601c] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Michael A. Coutant
- Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210
| | - Ty Le
- Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210
| | - Norma Castagnola
- Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210
| | - Prabir K. Dutta
- Department of Chemistry, The Ohio State University, 100 West 18th Avenue, Columbus, Ohio 43210
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Bhuiyan AA, Kincaid JR. Synthesis and Spectroscopic Characterization of a Zeolite-Entrapped Ru(bpy)(2)(dpp)(2+) Complex. Inorg Chem 1999; 38:4759-4764. [PMID: 11671202 DOI: 10.1021/ic990359s] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The heteroleptic ruthenium(II) complex Ru(bpy)(2)(dpp)(2+) (where bpy = 2,2'-bipyridine and dpp = 2,3-bis(2-pyridyl)pyrazine) has been prepared in the supercages of Y-zeolite and characterized by diffuse reflectance, electronic absorption, electronic emission, and resonance Raman (RR) spectroscopy, as well as lifetime measurements. The spectral results confirm the identity of the entrapped complex. The diffuse reflectance spectrum of the zeolite-entrapped complex is slightly red-shifted in the visible region compared to the absorption spectrum of the free complex in water solution. The emission maximum for the zeolite-entrapped complex is red-shifted by 16 nm with respect to the complex in water solution and by 38 nm relative to the complex in acetonitrile solution. The emission maximum for a zeolite surface-adsorbed complex is blue-shifted by 12 nm with respect to the complex in water solution, but the emission maxima of the liberated complex after dissolution of the zeolite matrix, for both the entrapped and adsorbed complexes, are identical to the spectrum of the free complex in water solution. There are moderate RR frequency shifts observed for the zeolite-entrapped complex relative to the solution-phase complex as a consequence of the interaction of the complex with the zeolite framework. The excited state lifetime measurement shows no dramatic changes upon entrapment within the zeolite supercages. Temperature-dependent lifetime measurements indicate that the excited state decays via two thermally accessible upper states.
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Affiliation(s)
- Anwar A. Bhuiyan
- Chemistry Department, Marquette University, Milwaukee, Wisconsin 53201-1881
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Bhuiyan AA, Kincaid JR. Synthesis and Photophysical Properties of Zeolite-Entrapped Bisterpyridine Ruthenium(II). Dramatic Consequences of Ligand-Field-State Destabilization. Inorg Chem 1998. [DOI: 10.1021/ic970950u] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Anwar A. Bhuiyan
- Chemistry Department, Marquette University, Milwaukee, Wisconsin 53201-1881
| | - James R. Kincaid
- Chemistry Department, Marquette University, Milwaukee, Wisconsin 53201-1881
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Low-lying electronic states of [Rh(bpy)3]3+, [Pt(bpy)2]2+, and [Ru(bpy)3]2+. A comparative study based on highly resolved and time-resolved spectra. Coord Chem Rev 1997. [DOI: 10.1016/s0010-8545(96)01318-5] [Citation(s) in RCA: 120] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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18
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Developments in laser selective spectroscopy and photophysics of d6 metal-(di-imine) complexes. Coord Chem Rev 1997. [DOI: 10.1016/s0010-8545(96)01304-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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19
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Characterization of excited electronic and vibronic states of platinum metal compounds with chelate ligands by highly frequency-resolved and time-resolved spectra. Top Curr Chem (Cham) 1997. [DOI: 10.1007/bfb0119213] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Electron transfer quenching of the excited MLCT state of Ru(II) in the double complex salts[Ru(bpy)3]2[M(CN)6]Cl·8H2O (MCo and Fe). Inorganica Chim Acta 1994. [DOI: 10.1016/0020-1693(94)04088-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Malone RA, Kelley DF. Interligand electron transfer and transition state dynamics in Ru(II)trisbipyridine. J Chem Phys 1991. [DOI: 10.1063/1.461228] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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22
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Yersin H, Braun D. Isotope-induced shifts of electronic transitions: application to [Ru(bpy-h8)3]2+ and [Ru(bpy-d8)3]2+ in [Zn(bpy-h8)3](ClO4)2. Chem Phys Lett 1991. [DOI: 10.1016/0009-2614(91)90296-l] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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23
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Electrochemical and photophysical properties of mono- and bimetallic ruthenium(II) complexes. Inorganica Chim Acta 1989. [DOI: 10.1016/s0020-1693(00)80785-9] [Citation(s) in RCA: 65] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Yersin H, Gallhuber E, Hensler G, Schweitzer D. Zero-field splittings of the two lowest excited electronic states in crystalline [Ru(bpy)3]X2 with X=PF6, ClO4. Chem Phys Lett 1989. [DOI: 10.1016/0009-2614(89)85091-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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25
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Schönherr T, Degen J, Gallhuber E, Hensler G, Yersin H. Geometrical distortions in excited A′2 states of single-crystal [Ru(bpy)3](PF6)2. Chem Phys Lett 1989. [DOI: 10.1016/0009-2614(89)87382-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Myrick M, Blakley R, Dearmond M. The number and spacing of levels in the emitting manifold of [Ru(bpy)3]2+ low temperature measurements. Chem Phys Lett 1989. [DOI: 10.1016/0009-2614(89)87210-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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28
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Zero-phonon and vibronic structure of [Os(bpy)32+ doped into single-crystal [Ru(bpy)3](ClO4)2. Chem Phys Lett 1987. [DOI: 10.1016/0009-2614(87)80807-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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van Oort E, Sitters R, Scheijde JH, Glasbeek M. Optically detected spin coherent transients from organometallic diimine complexes in the phosphorescent triplet state. J Chem Phys 1987. [DOI: 10.1063/1.453121] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kaim W, Kohlmann S. Epr evidence for related electronic structures of α-diimine complexes with [Ru(bpy)2]2+ and re(CO)3(halide) fragments. Chem Phys Lett 1987. [DOI: 10.1016/0009-2614(87)80574-2] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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