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Xu X, Marlton SJP, Flint KL, Hudson RJ, Keene FR, Hall CR, Smith TA. Photophysical Studies of Helicate and Mesocate Double-Stranded Dinuclear Ru(II) Complexes. J Phys Chem A 2024. [PMID: 38640443 DOI: 10.1021/acs.jpca.4c01996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/21/2024]
Abstract
The metal-ligand charge transfer (3MLCT) and phosphorescence-quenching metal-centered (3MC) states of the helicate and mesocate diastereoisomers of a double-stranded dinuclear polypyridylruthenium(II) complex have been investigated using ultrafast transient absorption spectroscopy. At 294 K, transient signals of the helicate decayed significantly slower than those of the mesocate, whereas at 77 K, no clear contrast in kinetics was observed. Contributions to excited-state decay from high-lying 3MLCT states were identified at both temperatures. Spectroscopic data (294 K) suggest that the 3MC state of the helicate lies above the 3MLCT and that the reverse is true for the mesocate; this was further validated by density functional theory calculations. The stabilization of the 3MC state relative to the 3MLCT state in the mesocate was explained by a reduction in ligand field strength due to distortion near the ligand bridge, which causes further deviation from octahedral geometry compared to the helicate. This work illustrates how minor structural differences can significantly influence excited state dynamics.
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Affiliation(s)
- Xinyue Xu
- School of Chemistry, The University of Melbourne, Parkville, Victoria 3010, Australia
- ARC Centre of Excellence in Exciton Science, Parkville, Victoria 3010, Australia
| | - Samuel J P Marlton
- School of Chemistry, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Kate L Flint
- Discipline of Chemistry, School of Physics, Chemistry and Earth Sciences, The University of Adelaide, South Australia 5005, Australia
| | - Rohan J Hudson
- School of Chemistry, The University of Melbourne, Parkville, Victoria 3010, Australia
- ARC Centre of Excellence in Exciton Science, Parkville, Victoria 3010, Australia
| | - F Richard Keene
- Discipline of Chemistry, School of Physics, Chemistry and Earth Sciences, The University of Adelaide, South Australia 5005, Australia
| | - Christopher R Hall
- School of Chemistry, The University of Melbourne, Parkville, Victoria 3010, Australia
- ARC Centre of Excellence in Exciton Science, Parkville, Victoria 3010, Australia
| | - Trevor A Smith
- School of Chemistry, The University of Melbourne, Parkville, Victoria 3010, Australia
- ARC Centre of Excellence in Exciton Science, Parkville, Victoria 3010, Australia
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2
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Lanquist AP, Piechota EJ, Wickramasinghe LD, Marques Silva A, Thummel RP, Turro C. New Tridentate Ligand Affords a Long-Lived 3MLCT Excited State in a Ru(II) Complex: DNA Photocleavage and 1O 2 Production. Inorg Chem 2023; 62:15927-15935. [PMID: 37733276 DOI: 10.1021/acs.inorgchem.3c01990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/22/2023]
Abstract
Two new complexes, [Ru(tpy)(qdppz)](PF6)2 (1; qdppz = 2-(quinolin-8-yl)dipyrido[3,2-a:2',3'-c]phenazine, tpy = 2,2':6',2″-terpyridine) and [Ru(qdppz)2](PF6)2 (2), were investigated for their potential use as phototherapeutic agents through their ability to photosensitize the production of singlet oxygen, 1O2, upon irradiation with visible light. The complexes exhibit strong Ru(dπ) → qdppz(π*) metal-to-ligand charge transfer (MLCT) absorption with maxima at 485 and 495 nm for 1 and 2 in acetone, respectively, red-shifted from the Ru(dπ) → tpy(π*) absorption at 470 nm observed for [Ru(tpy)2]2+ (3) in the same solvent. Complexes 1 and 3 are not luminescent at room temperature, but 3MLCT emission is observed for 2 with maximum at 690 nm (λexc = 480 nm) in acetone. The lifetimes of the 3MLCT states of 1 and 2 were measured using transient absorption spectroscopy to be ∼9 and 310 ns in methanol, respectively, at room temperature (λexc = 490 nm). The bite angle of the qdppz ligand is closer to octahedral geometry than that of tpy, resulting in the longer lifetime of 2 as compared to those of 1 and 3. Arrhenius treatment of the temperature dependence of the luminescence results in similar activation energies, Ea, from the 3MLCT to the 3LF (ligand-field) state for the two complexes, 2520 cm-1 in 1 and 2400 cm-1 in 2. However, the pre-exponential factors differ by approximately two orders of magnitude, 2.3 × 1013 s-1 for 1 and 1.4 × 1011 s-1 for 2, which, together with differences in the Huang-Rhys factors, lead to markedly different 3MLCT lifetimes. Although both 1 and 2 intercalate between the DNA bases, only 2 is able to photocleave DNA owing to its 1O2 production upon irradiation with ΦΔ = 0.69. The present work highlights the profound effect of the ligand bite angle on the electronic structure, providing guidelines for extending the lifetime of 3MLCT Ru(II) complexes with tridentate ligands, a desired property for a number of applications.
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Affiliation(s)
- Austin P Lanquist
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
| | - Eric J Piechota
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
| | | | - Alexia Marques Silva
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
| | - Randolph P Thummel
- Department of Chemistry, University of Houston, Houston, Texas 77004, United States
| | - Claudia Turro
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
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3
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Reuter T, Kruse A, Schoch R, Lochbrunner S, Bauer M, Heinze K. Higher MLCT lifetime of carbene iron(II) complexes by chelate ring expansion. Chem Commun (Camb) 2021; 57:7541-7544. [PMID: 34240092 DOI: 10.1039/d1cc02173g] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Combining strong σ-donating N-heterocyclic carbene ligands and π-accepting pyridine ligands with a high octahedricity in rigid iron(ii) complexes increases the 3MLCT lifetime from 0.15 ps in the prototypical [Fe(tpy)2]2+ complex to 9.2 ps in [Fe(dpmi)2]2+12+. The tripodal CNN ligand dpmi (di(pyridine-2-yl)(3-methylimidazol-2-yl)methane) forms six-membered chelate rings with the iron(ii) centre leading to close to 90° bite angles and enhanced iron-ligand orbital overlap.
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Affiliation(s)
- Thomas Reuter
- Department of Chemistry, Johannes Gutenberg University of Mainz, Duesbergweg 10-14, Mainz 55128, Germany.
| | - Ayla Kruse
- Institute for Physics and Department of Life, Light and Matter, University of Rostock, Rostock 18051, Germany
| | - Roland Schoch
- Faculty of Science, Chemistry Department and Centre for Sustainable Systems Design, Paderborn University, Paderborn 33098, Germany
| | - Stefan Lochbrunner
- Institute for Physics and Department of Life, Light and Matter, University of Rostock, Rostock 18051, Germany
| | - Matthias Bauer
- Faculty of Science, Chemistry Department and Centre for Sustainable Systems Design, Paderborn University, Paderborn 33098, Germany
| | - Katja Heinze
- Department of Chemistry, Johannes Gutenberg University of Mainz, Duesbergweg 10-14, Mainz 55128, Germany.
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4
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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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5
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Cerfontaine S, Troian-Gautier L, Wehlin SAM, Loiseau F, Cauët E, Elias B. Tuning the excited-state deactivation pathways of dinuclear ruthenium(ii) 2,2′-bipyridine complexes through bridging ligand design. Dalton Trans 2020; 49:8096-8106. [DOI: 10.1039/d0dt01216e] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A detailed photophysical study of binuclear complexes was performed using steady-state and time-resolved photoluminescence measurements at variable temperature. The results were compared with the prototypical [Ru(bpy)3]2+.
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Affiliation(s)
- Simon Cerfontaine
- Université catholique de Louvain (UCLouvain)
- Institut de la Matière Condensée et des Nanosciences (IMCN)
- Molecular Chemistry
- Materials and Catalysis (MOST)
- 1348 Louvain-la-Neuve
| | - Ludovic Troian-Gautier
- Laboratoire de Chimie Organique
- Université libre de Bruxelles (ULB)
- 1050 Brussels
- Belgium
- Department of Chemistry
| | - Sara A. M. Wehlin
- Department of Chemistry
- University of North Carolina at Chapel Hill
- Chapel Hill
- USA
| | - Frédérique Loiseau
- Département de Chimie Moléculaire
- Univ. Grenoble-Alpes (UGA)
- 38058 Grenoble
- France
| | - Emilie Cauët
- Spectroscopy
- Quantum Chemistry and Atmospheric Remote Sensing (CP 160/09)
- Université libre de Bruxelles
- B-1050 Brussels
- Belgium
| | - Benjamin Elias
- Université catholique de Louvain (UCLouvain)
- Institut de la Matière Condensée et des Nanosciences (IMCN)
- Molecular Chemistry
- Materials and Catalysis (MOST)
- 1348 Louvain-la-Neuve
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6
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Fredin LA, Wallenstein J, Sundin E, Jarenmark M, Barbosa de Mattos DF, Persson P, Abrahamsson M. Excited State Dynamics of Bistridentate and Trisbidentate Ru II Complexes of Quinoline-Pyrazole Ligands. Inorg Chem 2019; 58:16354-16363. [PMID: 31800221 DOI: 10.1021/acs.inorgchem.9b01543] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Three homoleptic ruthenium(II) complexes, [Ru(Q3PzH)3]2+, [Ru(Q1Pz)3]2+, and [Ru(DQPz)2]2+, based on the quinoline-pyrazole ligands, Q3PzH (8-(3-pyrazole)-quinoline), Q1Pz (8-(1-pyrazole)-quinoline), and DQPz (bis(quinolinyl)-1,3-pyrazole), have been spectroscopically and theoretically investigated. Spectral component analysis, transient absorption spectroscopy, density functional theory calculations, and ligand exchange reactions with different chlorination agents reveal that the excited state dynamics for Ru(II) complexes with these biheteroaromatic ligands differ significantly from that of traditional polypyridyl complexes. Despite the high energy and low reorganization energy of the excited state, nonradiative decay dominates even at liquid nitrogen temperatures, where triplet metal-to-ligand-charge-transfer emission quantum yields range from 0.7 to 3.8%, and microsecond excited state lifetimes are observed. In contrast to traditional polypyridyl complexes where ligand exchange is facilitated by expansion of the metal-ligand bonds to stabilize a metal-centered state, photoinduced ligand exchange occurs in the bidentate complexes despite no substantial MC state population, while the tridentate complex is extremely photostable despite an activated decay route, highlighting the versatile photochemistry of nonpolypyridine ligands.
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Affiliation(s)
- Lisa A Fredin
- Theoretical Chemistry Division, Department of Chemistry, Chemical Center , Lund University , Box 124, SE-22100 Lund , Sweden
| | - Joachim Wallenstein
- Department of Chemistry and Chemical Engineering , Chalmers University of Technology , SE-41296 Gothenburg , Sweden
| | - Elin Sundin
- Department of Chemistry and Chemical Engineering , Chalmers University of Technology , SE-41296 Gothenburg , Sweden
| | - Martin Jarenmark
- Department of Geology , Lund University , Solvegatan 12 , SE-22362 , Lund , Sweden
| | - Deise F Barbosa de Mattos
- Department of Chemistry and Chemical Engineering , Chalmers University of Technology , SE-41296 Gothenburg , Sweden
| | - Petter Persson
- Theoretical Chemistry Division, Department of Chemistry, Chemical Center , Lund University , Box 124, SE-22100 Lund , Sweden
| | - Maria Abrahamsson
- Department of Chemistry and Chemical Engineering , Chalmers University of Technology , SE-41296 Gothenburg , Sweden
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7
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Fredin LA, Persson P. Influence of Triplet Surface Properties on Excited-State Deactivation of Expanded Cage Bis(tridentate)Ruthenium(II) Complexes. J Phys Chem A 2019; 123:5293-5299. [DOI: 10.1021/acs.jpca.9b02927] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lisa A. Fredin
- Chemistry Department, Theoretical Chemistry Division, Lund University, Box 124, SE-22100 Lund, Sweden
| | - Petter Persson
- Chemistry Department, Theoretical Chemistry Division, Lund University, Box 124, SE-22100 Lund, Sweden
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8
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Shaikh SM, Chakraborty A, Alatis J, Cai M, Danilov E, Morris AJ. Light harvesting and energy transfer in a porphyrin-based metal organic framework. Faraday Discuss 2019; 216:174-190. [PMID: 31017129 DOI: 10.1039/c8fd00194d] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We present the synthesis and photophysical characterization of a water stable PCN-223(freebase) metal organic framework (MOF) constructed from meso-tetrakis(4-carboxyphenyl)porphyrin (TCPP). The photophysical properties of the synthesized crystalline material were studied using a wide range of steady-state and time-resolved spectroscopic techniques. Quenching experiments performed on TCPP and PCN-223 demonstrated that the extent and the rate of quenching in the MOF is significantly higher than the monomeric ligand. Based on these results, we propose that upon photo-excitation, the singlet excitation energy migrates across neutral TCPP linkers until it is quenched by a N-protonated TCPP linker. The N-protonated linkers act as trap states that deactivate the excited state to the ground state. Variable temperature measurements aided in understanding the mechanism of singlet-singlet energy transfer in the PCN-223 MOF. The rate of energy transfer and the total exciton hopping distance in PCN-223 were calculated in order to quantify the energy transfer characteristics of PCN-223. Nanosecond transient absorption spectroscopy was used to study the triplet excited state photophysics in both the free ligand and PCN-223 MOF. Furthermore, femtosecond transient absorption spectroscopy was employed to get a better understanding of the photophysical processes taking place in the ligand and MOF on ultrafast timescales. Efficient energy transfer (Förster radius = 54.5 Å) accompanied with long distance exciton hopping (173 Å) was obtained for the PCN-223 MOF.
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Affiliation(s)
- Shaunak M Shaikh
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24060, USA.
| | - Arnab Chakraborty
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24060, USA.
| | - James Alatis
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24060, USA.
| | - Meng Cai
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24060, USA.
| | - Evgeny Danilov
- Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695-8204, USA
| | - Amanda J Morris
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24060, USA.
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9
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Mede T, Jäger M, Schubert US. "Chemistry-on-the-complex": functional Ru II polypyridyl-type sensitizers as divergent building blocks. Chem Soc Rev 2018; 47:7577-7627. [PMID: 30246196 DOI: 10.1039/c8cs00096d] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Ruthenium polypyridyl type complexes are potent photoactive compounds, and have found - among others - a broad range of important applications in the fields of biomedical diagnosis and phototherapy, energy conversion schemes such as dye-sensitized solar cells (DSSCs) and molecular assemblies for tailored photo-initiated processes. In this regard, the linkage of RuII polypyridyl-type complexes with specific functional moieties is highly desirable to enhance their inherent photophysical properties, e.g., with a targeting function to achieve cell selectivity, or with a dye or redox-active subunits for energy- and electron-transfer. However, the classical approach of performing ligand syntheses first and the formation of Ru complexes in the last steps imposes synthetic limitations with regard to tolerating functional groups or moieties as well as requiring lengthy convergent routes. Alternatively, the diversification of Ru complexes after coordination (termed "chemistry-on-the-complex") provides an elegant complementary approach. In addition to the Click chemistry concept, the rapidly developing synthesis and purification methodologies permit the preparation of Ru conjugates via amidation, alkylation and cross-coupling reactions. In this regard, recent developments in chromatography shifted the limits of purification, e.g., by using new commercialized surface-modified silica gels and automated instrumentation. This review provides detailed insights into applying the "chemistry-on-the-complex" concept, which is believed to stimulate the modular preparation of unpreceded molecular assemblies as well as functional materials based on Ru-based building blocks, including combinatorial approaches.
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Affiliation(s)
- Tina Mede
- Laboratory of Organic and Macromolecular Chemistry (IOMC), Friedrich Schiller University Jena, Humboldtstraße 10, 07743 Jena, Germany.
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10
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Fredin LA, Allison TC. Semiempirical configuration interaction calculations for ru-centered dyes. J Comput Chem 2018; 39:1259-1266. [PMID: 29450901 DOI: 10.1002/jcc.25190] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Revised: 01/08/2018] [Accepted: 01/28/2018] [Indexed: 12/12/2022]
Abstract
Computational investigation of the photochemical properties of transition-metal-centered dyes typically involves optimization of the molecular structure followed by calculation of the UV/visible spectrum. At present, these steps are usually carried out using density functional theory (DFT) and time-dependent DFT calculations. Recently, we demonstrated that semiempirical methods with appropriate parameterization could yield geometries that were in very good agreement with DFT calculations, allowing large sets of molecules to be screened quickly and efficiently. In this article, we modify a configuration interaction (CI) method based on a semiempirical PM6 Hamiltonian to determine the UV/visible absorption spectra of Ru-centered complexes. Our modification to the CI method is based on a scaling of the two-center, two-electron Coulomb integrals. This modified, PM6-based method shows a significantly better match to the experimental absorption spectra versus the default configuration interaction method (in MOPAC) on a training set of 13 molecules. In particular, the modified PM6 method blue-shifts the location of the metal-to-ligand charge-transfer (MLCT) peaks, in better agreement with experimental and DFT-based computational results, correcting a significant deficiency of the unmodified method. Published 2018. This article is a U.S. Government work and is in the public domain in the USA.
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Affiliation(s)
- Lisa A Fredin
- Chemical Informatics Research Group, Chemical Science Division, Material Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive, Stop 8320, Gaithersburg, Maryland 20899-8320
| | - Thomas C Allison
- Chemical Informatics Research Group, Chemical Science Division, Material Measurement Laboratory, National Institute of Standards and Technology, 100 Bureau Drive, Stop 8320, Gaithersburg, Maryland 20899-8320
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11
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Abrahamsson M, Becker HC, Hammarström L. Microsecond 3MLCT excited state lifetimes in bis-tridentate Ru(ii)-complexes: significant reductions of non-radiative rate constants. Dalton Trans 2018; 46:13314-13321. [PMID: 28799607 DOI: 10.1039/c7dt02437a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper we report the photophysical properties of a series of bis-tridentate RuII-complexes, based on the dqp-ligand (dqp = 2,6-di(quinolin-8-yl)pyridine), which display several microsecond long excited state lifetimes for triplet metal-to-ligand charge transfer (3MLCT) at room temperature. Temperature dependence of the excited state lifetimes for [Ru(dqp)2]2+ and [Ru(dqp)(ttpy)]2+ (ttpy = 4'-tolyl-2,2':6',2''-terpyridine) is reported and radiative and non-radiative rate constants for the whole series are reported and discussed. We can confirm previous assumptions that the near-octahedricity of the bis-dqp complexes dramatically slows down activated decay at room temperature, as compared to most other and less long-lived bis-tridentate RuII-complexes, such as [Ru(tpy)2]2+ with τ = 0.25 ns at room temperature (tpy = 2,2':6',2''-terpyridine). Moreover, the direct non-radiative decay to the ground state is comparatively slow for ∼700 nm room-temperature emission when considering the energy-gap law. Analysis of the 77 K emission spectra suggests that this effect is not primarily due to smaller excited state distortion than that for comparable complexes. Instead, an analysis of the photophysical parameters suggests a weaker singlet-triplet mixing in the MLCT state, which slows down both radiative and non-radiative decay.
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Affiliation(s)
- Maria Abrahamsson
- Department of Chemistry - Ångström Laboratory, Uppsala University, Box 523, SE-751 20 Uppsala, Sweden.
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12
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Roy S, Halder S, Drew MGB, Ray PP, Chattopadhyay S. Unprecedented photosensitivity of heterotrimetallic copper(ii)/sodium/mercury(ii) coordination polymer based thin film semiconductor device. NEW J CHEM 2018. [DOI: 10.1039/c8nj02261e] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A photosensitive, heterotrimetallic copper(ii)/sodium/mercury(ii) coordination polymer has been used to fabricate a Schottky diode device.
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Affiliation(s)
- Sourav Roy
- Department of Chemistry, Inorganic Section
- Jadavpur University
- Kolkata – 700032
- India
| | - Soumi Halder
- Department of Physics
- Jadavpur University
- Kolkata 700 032
- India
| | - Michael G. B. Drew
- School of Chemistry, The University of Reading, P.O. Box 224, Whiteknights
- Reading RG6 6AD
- UK
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13
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Kouno M, Kuwamura N, Yoshinari N, Konno T. 3-Aminopropanethiol versus 2-Aminoethanethiol Leading to Different S-bridged Multinuclear Structures Composed of Rhodium(III) Octahedrons. CHEM LETT 2017. [DOI: 10.1246/cl.170654] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Masahiro Kouno
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043
| | - Naoto Kuwamura
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043
| | - Nobuto Yoshinari
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043
| | - Takumi Konno
- Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043
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14
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Chen Y, Wu Q, Wang X, Xie Q, Tang Y, Lan Y, Zhang S, Mei W. Microwave-Assisted Synthesis of Arene Ru(II) Complexes Induce Tumor Cell Apoptosis Through Selectively Binding and Stabilizing bcl-2 G-Quadruplex DNA. MATERIALS (BASEL, SWITZERLAND) 2016; 9:ma9050386. [PMID: 28773504 PMCID: PMC5503023 DOI: 10.3390/ma9050386] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/01/2016] [Revised: 05/06/2016] [Accepted: 05/10/2016] [Indexed: 12/21/2022]
Abstract
A series of arene Ru(II) complexes coordinated with phenanthroimidazole derivatives, [(η⁶-C₆H₆)Ru(l)Cl]Cl(1b L = p-ClPIP = 2-(4-Chlorophenyl)imidazole[4,5f] 1,10-phenanthroline; 2b L = m-ClPIP = 2-(3-Chlorophenyl)imidazole[4,5f] 1,10-phenanthroline; 3b L = p-NPIP = 2-(4-Nitrophenyl)imidazole[4,5f] 1,10-phenanthroline; 4b L = m-NPIP = 2-(3-Nitrophenyl) imidazole [4,5f] 1,10-phenanthroline) were synthesized in yields of 89.9%-92.7% under conditions of microwave irradiation heating for 30 min to liberate four arene Ru(II) complexes (1b, 2b, 3b, 4b). The anti-tumor activity of 1b against various tumor cells was evaluated by MTT assay. The results indicated that this complex blocked the growth of human lung adenocarcinoma A549 cells with an IC50 of 16.59 μM. Flow cytometric analysis showed that apoptosis of A549 cells was observed following treatment with 1b. Furthermore, the in vitro DNA-binding behaviors that were confirmed by spectroscopy indicated that 1b could selectively bind and stabilize bcl-2 G-quadruplex DNA to induce apoptosis of A549 cells. Therefore, the synthesized 1b has impressive bcl-2 G-quadruplex DNA-binding and stabilizing activities with potential applications in cancer chemotherapy.
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Affiliation(s)
- Yanhua Chen
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Qiong Wu
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Xicheng Wang
- The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou 510080, China.
| | - Qiang Xie
- The Third Affiliated Hospital of Sun Yat-Sen University, Guangzhou 440100, China.
| | - Yunyun Tang
- The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou 510080, China.
| | - Yutao Lan
- School of Nursing, Guangdong Pharmaceutical University, Guangzhou 510310, China.
| | - Shuangyan Zhang
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
| | - Wenjie Mei
- School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China.
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15
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Fredin LA, Allison TC. Predicting Structures of Ru-Centered Dyes: A Computational Screening Tool. J Phys Chem A 2016; 120:2135-43. [PMID: 26982657 DOI: 10.1021/acs.jpca.6b00921] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Dye-sensitized solar cells (DSCs) represent a means for harvesting solar energy to produce electrical power. Though a number of light harvesting dyes are in use, the search continues for more efficient and effective compounds to make commercially viable DSCs a reality. Computational methods have been increasingly applied to understand the dyes currently in use and to aid in the search for improved light harvesting compounds. Semiempirical quantum chemistry methods have a well-deserved reputation for giving good quality results in a very short amount of computer time. The most recent semiempirical models such as PM6 and PM7 are parametrized for a wide variety of molecule types, including organometallic complexes similar to DSC chromophores. In this article, the performance of PM6 is tested against a set of 20 molecules whose geometries were optimized using a density functional theory (DFT) method. It is found that PM6 gives geometries that are in good agreement with the optimized DFT structures. In order to reduce the differences between geometries optimized using PM6 and geometries optimized using DFT, the PM6 basis set parameters have been optimized for a subset of the molecules. It is found that it is sufficient to optimize the basis set for Ru alone to improve the agreement between the PM6 results and the DFT results. When this optimized Ru basis set is used, the mean unsigned error in Ru-ligand bond lengths is reduced from 0.043 to 0.017 Å in the set of 20 test molecules. Though the magnitude of these differences is small, the effect on the calculated UV/vis spectra is significant. These results clearly demonstrate the value of using PM6 to screen DSC chromophores as well as the value of optimizing PM6 basis set parameters for a specific set of molecules.
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Affiliation(s)
- Lisa A Fredin
- Chemical Informatics Research Group, Chemical Science Division, Material Measurement Laboratory, National Institute of Standards and Technology , 100 Bureau Drive, Stop 8320, Gaithersburg, Maryland 20899-8320, United States
| | - Thomas C Allison
- Chemical Informatics Research Group, Chemical Science Division, Material Measurement Laboratory, National Institute of Standards and Technology , 100 Bureau Drive, Stop 8320, Gaithersburg, Maryland 20899-8320, United States
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16
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Wallenstein JH, Sundberg J, McKenzie CJ, Abrahamsson M. Emissive Ruthenium–Bisdiimine Complexes with Chelated Thioether Donors. Eur J Inorg Chem 2016. [DOI: 10.1002/ejic.201501256] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Joachim Hedberg Wallenstein
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 41296 Göteborg, Sweden, http://https://www.chalmers.se/en/Staff/Pages/abmaria.aspx
| | - Jonas Sundberg
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Christine J. McKenzie
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, Campusvej 55, 5230 Odense M, Denmark
| | - Maria Abrahamsson
- Department of Chemistry and Chemical Engineering, Chalmers University of Technology, 41296 Göteborg, Sweden, http://https://www.chalmers.se/en/Staff/Pages/abmaria.aspx
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17
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Hedberg Wallenstein J, Fredin LA, Jarenmark M, Abrahamsson M, Persson P. Chemical consequences of pyrazole orientation in RuII complexes of unsymmetric quinoline–pyrazole ligands. Dalton Trans 2016; 45:11723-32. [DOI: 10.1039/c6dt01070a] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Chemical consequences of pyrazole orientation in RuII complexes of unsymmetric quinoline–pyrazole ligands.
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Affiliation(s)
| | - Lisa A. Fredin
- Theoretical Chemistry Division
- Department of Chemistry
- Chemical Center
- Lund University
- SE-22100 Lund
| | - Martin Jarenmark
- Centre for Analysis and Synthesis
- Department of Chemistry Chemical Center
- Lund University
- SE-22100 Lund
- Sweden
| | - Maria Abrahamsson
- Department of Chemistry and Chemical Engineering
- Chalmers University of Technology
- SE-41296 Gothenburg
- Sweden
| | - Petter Persson
- Theoretical Chemistry Division
- Department of Chemistry
- Chemical Center
- Lund University
- SE-22100 Lund
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18
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Laramée-Milette B, Hanan GS. Ruthenium bistridentate complexes with non-symmetrical hexahydro-pyrimidopyrimidine ligands: a structural and theoretical investigation of their optical and electrochemical properties. Dalton Trans 2016; 45:12507-17. [DOI: 10.1039/c6dt02408d] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The optical and electronic properties of six Ru complexes with non-symmetrical tridentate ligands have been investigated and, as corroborated by electrochemical data, the presence of the hpp ligand strongly affects the oxidation potential of the metal ion.
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Affiliation(s)
| | - Garry S. Hanan
- Département de Chimie
- Université de Montréal
- Montréal
- Canada
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19
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Sakuda E, Matsumoto C, Ando Y, Ito A, Mochida K, Nakagawa A, Kitamura N. Dual Emissions from Ruthenium(II) Complexes Having 4-Arylethynyl-1,10-phenanthroline at Low Temperature. Inorg Chem 2015; 54:3245-52. [DOI: 10.1021/ic502843x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Eri Sakuda
- PRESTO, Japan Science and Technology Agency, Honcho, Kawaguchi, Saitama Prefecture 332-0012, Japan
| | | | | | - Akitaka Ito
- Department
of Chemistry, Graduate School of Science, Osaka City University, Osaka 558-8585, Japan
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20
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Jarenmark M, Fredin LA, Hedberg JHJ, Doverbratt I, Persson P, Abrahamsson M. A Homoleptic Trisbidentate Ru(II) Complex of a Novel Bidentate Biheteroaromatic Ligand Based on Quinoline and Pyrazole Groups: Structural, Electrochemical, Photophysical, and Computational Characterization. Inorg Chem 2014; 53:12778-90. [DOI: 10.1021/ic502432c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | | | - Joachim H. J. Hedberg
- Department of Chemical and
Biological Engineering, Chalmers University of Technology, SE-41296 Gothenburg, Sweden
| | | | | | - Maria Abrahamsson
- Department of Chemical and
Biological Engineering, Chalmers University of Technology, SE-41296 Gothenburg, Sweden
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21
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Naziruddin AR, Kuo CL, Lin WJ, Lo WH, Lee CS, Sun BJ, Chang AHH, Hwang WS. Ruthenium Complexes Bearing Unsymmetric CNC′ Pincer Ligands: Molecular Structures and Electronic Properties. Organometallics 2014. [DOI: 10.1021/om500205p] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Abbas Raja Naziruddin
- Department of Chemistry, National Dong Hwa University, Hualien 974, Taiwan, Republic of China
| | - Chia-Liang Kuo
- Department of Chemistry, National Dong Hwa University, Hualien 974, Taiwan, Republic of China
| | - Wan-Jung Lin
- Department of Chemistry, National Dong Hwa University, Hualien 974, Taiwan, Republic of China
| | - Wei-Hao Lo
- Department of Chemistry, National Dong Hwa University, Hualien 974, Taiwan, Republic of China
| | - Chen-Shiang Lee
- Department of Chemistry, National Dong Hwa University, Hualien 974, Taiwan, Republic of China
| | - Bian-Jian Sun
- Department of Chemistry, National Dong Hwa University, Hualien 974, Taiwan, Republic of China
| | - A. Hsiu Hwa Chang
- Department of Chemistry, National Dong Hwa University, Hualien 974, Taiwan, Republic of China
| | - Wen-Shu Hwang
- Department of Chemistry, National Dong Hwa University, Hualien 974, Taiwan, Republic of China
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22
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Shahroosvand H, Abbasi P, Faghih A, Mohajerani E, Janghouri M, Mahmoudi M. A new class of color-tunable electroluminescent ruthenium(ii) phenanthroline emitters. RSC Adv 2014. [DOI: 10.1039/c3ra43900c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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23
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Kaveevivitchai N, Kohler L, Zong R, El Ojaimi M, Mehta N, Thummel RP. A Ru(II) Bis-terpyridine-like Complex that Catalyzes Water Oxidation: The Influence of Steric Strain. Inorg Chem 2013; 52:10615-22. [DOI: 10.1021/ic4016383] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nattawut Kaveevivitchai
- Department of Chemistry, 110 Fleming Building, University of Houston, Houston, Texas 77204-5003, United States
| | - Lars Kohler
- Department of Chemistry, 110 Fleming Building, University of Houston, Houston, Texas 77204-5003, United States
| | - Ruifa Zong
- Department of Chemistry, 110 Fleming Building, University of Houston, Houston, Texas 77204-5003, United States
| | - Maya El Ojaimi
- Department of Chemistry, 110 Fleming Building, University of Houston, Houston, Texas 77204-5003, United States
| | - Nirja Mehta
- Department of Chemistry, 110 Fleming Building, University of Houston, Houston, Texas 77204-5003, United States
| | - Randolph P. Thummel
- Department of Chemistry, 110 Fleming Building, University of Houston, Houston, Texas 77204-5003, United States
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24
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Tsai CN, Tian YH, Shi X, Lord RL, Schlegel HB, Chen YJ, Endicott JF. Experimental and DFT Characterization of Metal-to-Ligand Charge-Transfer Excited States of (Rutheniumammine)(Monodentate Aromatic Ligand) Chromophores. Inorg Chem 2013; 52:9774-90. [DOI: 10.1021/ic4016614] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Chia Nung Tsai
- Department of Chemistry, Fu-Jen Catholic University, New Taipei
City 24205, Taiwan, Republic of China
- Department of Chemistry, Wayne State University, Detroit, Michigan
48202, United States
| | - Yi-Han Tian
- Department of Chemistry, Fu-Jen Catholic University, New Taipei
City 24205, Taiwan, Republic of China
| | - Xuetao Shi
- Department of Chemistry, Wayne State University, Detroit, Michigan
48202, United States
| | - Richard L. Lord
- Department of Chemistry, Wayne State University, Detroit, Michigan
48202, United States
| | - H. Bernhard Schlegel
- Department of Chemistry, Wayne State University, Detroit, Michigan
48202, United States
| | - Yuan Jang Chen
- Department of Chemistry, Fu-Jen Catholic University, New Taipei
City 24205, Taiwan, Republic of China
- Department of Chemistry, Wayne State University, Detroit, Michigan
48202, United States
| | - John F. Endicott
- Department of Chemistry, Wayne State University, Detroit, Michigan
48202, United States
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25
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O’Donnell RM, Johansson PG, Abrahamsson M, Meyer GJ. Excited-State Relaxation of Ruthenium Polypyridyl Compounds Relevant to Dye-Sensitized Solar Cells. Inorg Chem 2013; 52:6839-48. [DOI: 10.1021/ic302339a] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ryan M. O’Donnell
- Departments
of Chemistry and
Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Patrik G. Johansson
- Departments
of Chemistry and
Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
| | - Maria Abrahamsson
- Department of Chemical and Biological
Engineering, Chalmers University of Technology, 41296 Göteborg, Sweden
| | - Gerald J. Meyer
- Departments
of Chemistry and
Materials Science and Engineering, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland 21218, United States
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26
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Hancock RD. The pyridyl group in ligand design for selective metal ion complexation and sensing. Chem Soc Rev 2013; 42:1500-24. [DOI: 10.1039/c2cs35224a] [Citation(s) in RCA: 251] [Impact Index Per Article: 22.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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27
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Österman T, Abrahamsson M, Becker HC, Hammarström L, Persson P. Influence of Triplet State Multidimensionality on Excited State Lifetimes of Bis-tridentate RuII Complexes: A Computational Study. J Phys Chem A 2012; 116:1041-50. [DOI: 10.1021/jp207044a] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Tomas Österman
- Chemistry Department, Lund University, Box 124, SE-22100 Lund, Sweden
| | - Maria Abrahamsson
- Physical Chemistry, Department of Chemical and Biological Engineering, Chalmers University of Technology, SE-41296 Göteborg, Sweden
| | - Hans-Christian Becker
- Physical Chemistry, Department of Chemical and Biological Engineering, Chalmers University of Technology, SE-41296 Göteborg, Sweden
| | - Leif Hammarström
- Chemical Physics, Department of Photochemistry and Molecular Science, Uppsala University, Box 532, SE-75120 Uppsala, Sweden
| | - Petter Persson
- Chemistry Department, Lund University, Box 124, SE-22100 Lund, Sweden
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28
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Lu X, Wei S, Lawrence Wu CM, Guo W, Zhao L. Theoretical characterization of ruthenium complexes containing functionalized bithiophene ligands for dye-sensitized solar cells. J Organomet Chem 2011. [DOI: 10.1016/j.jorganchem.2011.01.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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29
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Sakuda E, Ando Y, Ito A, Kitamura N. Long-Lived and Temperature-Independent Emission from a Novel Ruthenium(II) Complex Having an Arylborane Charge-Transfer Unit. Inorg Chem 2011; 50:1603-13. [DOI: 10.1021/ic1020669] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Eri Sakuda
- Department of Chemistry, Faculty of Science,
| | - Yuki Ando
- Department of Chemistry, Faculty of Science,
| | - Akitaka Ito
- Department of Chemistry, Faculty of Science,
| | - Noboru Kitamura
- Department of Chemistry, Faculty of Science,
- Department of Chemical Sciences and Engineering, Graduate School of Chemical Sciences and Engineering, Hokkaido University, Sapporo 060-0810, Japan
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30
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Expanded bite angles in tridentate ligands. Improving the photophysical properties in bistridentate RuII polypyridine complexes. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2010.01.006] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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31
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Bencini A, Lippolis V. 1,10-Phenanthroline: A versatile building block for the construction of ligands for various purposes. Coord Chem Rev 2010. [DOI: 10.1016/j.ccr.2010.04.008] [Citation(s) in RCA: 288] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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32
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Li XN, Wu ZJ, Liu XJ, Zhang HJ. Origin of Rare and Highly Efficient Phosphorescent and Electroluminescent Iridium(III) Complexes Based on C∧N═N Ligands, A Theoretical Explanation. J Phys Chem A 2010; 114:9300-8. [DOI: 10.1021/jp1043317] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiao-Na Li
- State Key Laboratory of Rare Earth Resource Utilization, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, People's Republic of China
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33
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Chen JL, Chi Y, Chen K, Cheng YM, Chung MW, Yu YC, Lee GH, Chou PT, Shu CF. New series of ruthenium(II) and osmium(II) complexes showing solid-state phosphorescence in far-visible and near-infrared. Inorg Chem 2010; 49:823-32. [PMID: 20030393 DOI: 10.1021/ic900586e] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new Ru(II) complex, [Ru(fpbpymH)(2)]Cl(2) (1), in which fpbpymH = [5-(trifluoromethyl)pyrazol-3-yl](2,2'-bipyrid-6-yl)methane, was prepared by the treatment of [Ru(DMSO)(4)Cl(2)] with 2 equiv of the terdentate chelate fpbpymH in refluxing ethanol. A single-crystal X-ray diffraction study of 1 revealed a distorted octahedral Ru(II) framework, showing strong N-H...Cl hydrogen bonding between the fpbpymH ligand and Cl anions. In the presence of Na(2)CO(3), the methylene linkers of chelates in 1 underwent stepwise oxygenation, forming the charge-neutral complexes [Ru(fpbpym)(fpbpyk)] (2) and [Ru(fpbpyk)(2)] (3) [fpbpykH = [5-(trifluoromethyl)pyrazol-3-yl](2,2'-bipyrid-6-yl) ketone] in sequence. The respective charge-neutral Os(II) complex [Os(fpbpyk)(2)] (4) was also isolated by the treatment of OsCl(3).3H(2)O with 2 equiv of the terdentate chelate fpbpymH. Electrochemical analysis indicated that the introduction of the electron-withdrawing ketone group in 2-4 increased the metal-based oxidation potential in sequence. For the photophysical properties, complexes 1-4 are essentially nonluminescent in solution (e.g., CH(2)Cl(2) or MeOH) at room temperature, but all exhibit 600-1100 nm phosphorescence with moderate intensity for the powdery, solid sample at room temperature. The trend in terms of the emission peak wavelength of 1 (666 nm) < 3 (795 nm) < 2 (810 nm) < 4 (994 nm) among titled complexes is in agreement with the corresponding onset of absorption spectra as well as the time-dependent density functional theory calculation of 1 < 3 < 2 < 4.
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Affiliation(s)
- Jing-Lin Chen
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan
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34
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Dixon IM, Alary F, Heully JL. Electronic peculiarities of the excited states of [RuN5C]+vs. [RuN6]2+ polypyridine complexes: insight from theory. Dalton Trans 2010; 39:10959-66. [DOI: 10.1039/c0dt00563k] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Garner KL, Parkes LF, Piper JD, Williams JAG. Luminescent Platinum Complexes with Terdentate Ligands Forming 6-Membered Chelate Rings: Advantageous and Deleterious Effects in N∧N∧N and N∧C∧N-Coordinated Complexes. Inorg Chem 2009; 49:476-87. [DOI: 10.1021/ic9016323] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | - Louise F. Parkes
- Department of Chemistry, University of Durham, Durham DH1 3LE, U.K
| | - Jason D. Piper
- Department of Chemistry, University of Durham, Durham DH1 3LE, U.K
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36
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Effect of ancillary ligands on the photophysical properties of Ru(II) complexes bearing a highly conjugated diimine ligand: A density functional theory study. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2009.08.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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37
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Li XN, Wu ZJ, Zhang HJ, Si ZJ, Zhou L, Liu XJ. The Reasons for Ligand-Dependent Quantum Yields and Absorption Spectrum of Four Polypyridylruthenium(II) Complexes with a Tetrazolate-Based Ligand: TDDFT Study. Eur J Inorg Chem 2009. [DOI: 10.1002/ejic.200900344] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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38
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Singh AN, Thummel RP. 1,5-Naphthyridine As a New Linker for the Construction of Bridging Ligands and Their Corresponding Ru(II) Complexes. Inorg Chem 2009; 48:6459-70. [DOI: 10.1021/ic900400t] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ajay N. Singh
- Department of Chemistry, 136 Fleming Building, University of Houston, Houston, Texas 77204-5003
| | - Randolph P. Thummel
- Department of Chemistry, 136 Fleming Building, University of Houston, Houston, Texas 77204-5003
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39
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Li XN, Wu ZJ, Zhang HJ, Liu XJ, Zhou L, Li ZF, Si ZJ. Different electronic structures and spectroscopic properties of cationic [M(ppy)2(N∧N)]+ (M = Rh, Ir; N∧N = Hcmbpy, H2dcbpy), a DFT study. Phys Chem Chem Phys 2009; 11:6051-9. [DOI: 10.1039/b819014c] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Abrahamsson M, Jäger M, Kumar RJ, Österman T, Persson P, Becker HC, Johansson O, Hammarström L. Bistridentate Ruthenium(II)polypyridyl-Type Complexes with Microsecond 3MLCT State Lifetimes: Sensitizers for Rod-Like Molecular Arrays. J Am Chem Soc 2008; 130:15533-42. [DOI: 10.1021/ja804890k] [Citation(s) in RCA: 164] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Maria Abrahamsson
- Department of Photochemistry and Molecular Science, The Ångström Laboratories, Uppsala University, Box 523, SE-751 20 Uppsala, Sweden, Department of Quantum Chemistry, Uppsala University, Box 518, SE-751 20, Uppsala, Sweden, and Department of Chemical Physics, Lund University, Box 124, SE-221 00 Lund, Sweden
| | - Michael Jäger
- Department of Photochemistry and Molecular Science, The Ångström Laboratories, Uppsala University, Box 523, SE-751 20 Uppsala, Sweden, Department of Quantum Chemistry, Uppsala University, Box 518, SE-751 20, Uppsala, Sweden, and Department of Chemical Physics, Lund University, Box 124, SE-221 00 Lund, Sweden
| | - Rohan J. Kumar
- Department of Photochemistry and Molecular Science, The Ångström Laboratories, Uppsala University, Box 523, SE-751 20 Uppsala, Sweden, Department of Quantum Chemistry, Uppsala University, Box 518, SE-751 20, Uppsala, Sweden, and Department of Chemical Physics, Lund University, Box 124, SE-221 00 Lund, Sweden
| | - Tomas Österman
- Department of Photochemistry and Molecular Science, The Ångström Laboratories, Uppsala University, Box 523, SE-751 20 Uppsala, Sweden, Department of Quantum Chemistry, Uppsala University, Box 518, SE-751 20, Uppsala, Sweden, and Department of Chemical Physics, Lund University, Box 124, SE-221 00 Lund, Sweden
| | - Petter Persson
- Department of Photochemistry and Molecular Science, The Ångström Laboratories, Uppsala University, Box 523, SE-751 20 Uppsala, Sweden, Department of Quantum Chemistry, Uppsala University, Box 518, SE-751 20, Uppsala, Sweden, and Department of Chemical Physics, Lund University, Box 124, SE-221 00 Lund, Sweden
| | - Hans-Christian Becker
- Department of Photochemistry and Molecular Science, The Ångström Laboratories, Uppsala University, Box 523, SE-751 20 Uppsala, Sweden, Department of Quantum Chemistry, Uppsala University, Box 518, SE-751 20, Uppsala, Sweden, and Department of Chemical Physics, Lund University, Box 124, SE-221 00 Lund, Sweden
| | - Olof Johansson
- Department of Photochemistry and Molecular Science, The Ångström Laboratories, Uppsala University, Box 523, SE-751 20 Uppsala, Sweden, Department of Quantum Chemistry, Uppsala University, Box 518, SE-751 20, Uppsala, Sweden, and Department of Chemical Physics, Lund University, Box 124, SE-221 00 Lund, Sweden
| | - Leif Hammarström
- Department of Photochemistry and Molecular Science, The Ångström Laboratories, Uppsala University, Box 523, SE-751 20 Uppsala, Sweden, Department of Quantum Chemistry, Uppsala University, Box 518, SE-751 20, Uppsala, Sweden, and Department of Chemical Physics, Lund University, Box 124, SE-221 00 Lund, Sweden
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41
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Cationic half-sandwich complexes (Rh,Ir,Ru) containing 2-substituted-1,8-naphthyridine chelating ligands: Syntheses, X-ray structure analyses and spectroscopic studies. J Organomet Chem 2008. [DOI: 10.1016/j.jorganchem.2008.06.026] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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42
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Odongo OS, Heeg MJ, Chen YJ, Xie P, Endicott JF. Effects of Excited State−Excited State Configurational Mixing on Emission Bandshape Variations in Ruthenium−Bipyridine Complexes. Inorg Chem 2008; 47:7493-511. [DOI: 10.1021/ic7024473] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Onduru S. Odongo
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, and Department of Chemistry, Fu Jen Catholic University, Taipei Hsien 24205, Taiwan, R.O.C
| | - Mary Jane Heeg
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, and Department of Chemistry, Fu Jen Catholic University, Taipei Hsien 24205, Taiwan, R.O.C
| | - Yuan-Jang Chen
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, and Department of Chemistry, Fu Jen Catholic University, Taipei Hsien 24205, Taiwan, R.O.C
| | - Puhui Xie
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, and Department of Chemistry, Fu Jen Catholic University, Taipei Hsien 24205, Taiwan, R.O.C
| | - John F. Endicott
- Department of Chemistry, Wayne State University, Detroit, Michigan 48202, and Department of Chemistry, Fu Jen Catholic University, Taipei Hsien 24205, Taiwan, R.O.C
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43
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Mudadu MS, Singh AN, Thummel RP. Preparation and Study of 1,8-Di(pyrid-2′-yl)carbazoles. J Org Chem 2008; 73:6513-20. [DOI: 10.1021/jo801132w] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Maria S. Mudadu
- Department of Chemistry, 136 Fleming Building, University of Houston, Houston, Texas 77204-5003
| | - Ajay N. Singh
- Department of Chemistry, 136 Fleming Building, University of Houston, Houston, Texas 77204-5003
| | - Randolph P. Thummel
- Department of Chemistry, 136 Fleming Building, University of Houston, Houston, Texas 77204-5003
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Salassa L, Garino C, Salassa G, Gobetto R, Nervi C. Mechanism of Ligand Photodissociation in Photoactivable [Ru(bpy)2L2]2+ Complexes: A Density Functional Theory Study. J Am Chem Soc 2008; 130:9590-7. [DOI: 10.1021/ja8025906] [Citation(s) in RCA: 139] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Luca Salassa
- Dipartimento di Chimica I.F.M., Università di Torino, Via P. Giuria 7, I-10125 Torino, Italy
| | - Claudio Garino
- Dipartimento di Chimica I.F.M., Università di Torino, Via P. Giuria 7, I-10125 Torino, Italy
| | - Giovanni Salassa
- Dipartimento di Chimica I.F.M., Università di Torino, Via P. Giuria 7, I-10125 Torino, Italy
| | - Roberto Gobetto
- Dipartimento di Chimica I.F.M., Università di Torino, Via P. Giuria 7, I-10125 Torino, Italy
| | - Carlo Nervi
- Dipartimento di Chimica I.F.M., Università di Torino, Via P. Giuria 7, I-10125 Torino, Italy
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