1
|
Burke JH, Bae DY, Wallick RF, Dykstra CP, Rossi TC, Smith LE, Leahy CA, Schaller RD, Mirica LM, Vura-Weis J, van der Veen RM. High-Spin State of a Ferrocene Electron Donor Revealed by Optical and X-ray Transient Absorption Spectroscopy. J Am Chem Soc 2024; 146:21651-21663. [PMID: 39051542 PMCID: PMC11311227 DOI: 10.1021/jacs.4c05646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Revised: 07/07/2024] [Accepted: 07/09/2024] [Indexed: 07/27/2024]
Abstract
Ferrocene is one of the most common electron donors, and mapping its ligand-field excited states is critical to designing donor-acceptor (D-A) molecules with long-lived charge transfer states. Although 3(d-d) states are commonly invoked in the photophysics of ferrocene complexes, mention of the high-spin 5(d-d) state is scarce. Here, we provide clear evidence of 5(d-d) formation in a bimetallic D-A molecule, ferrocenyl cobaltocenium hexafluorophosphate ([FcCc]PF6). Femtosecond optical transient absorption (OTA) spectroscopy reveals two distinct electronic excited states with 30 and 500 ps lifetimes. Using a combination of ultraviolet, visible, near-infrared, and short-wave infrared probe pulses, we capture the spectral features of these states over an ultrabroadband range spanning 320 to 2200 nm. Time-dependent density functional theory (DFT) calculations of the lowest triplet and quintet states, both primarily Fe(II) (d-d) in character, qualitatively agree with the experimental OTA spectra, allowing us to assign the 30 ps state as the 3(d-d) state and the 500 ps state as the high-spin 5(d-d) state. To confirm the ferrocene-centered high-spin character of the 500 ps state, we performed X-ray transient absorption (XTA) spectroscopy at the Fe and Co K edges. The Fe K-edge XTA spectrum at 150 ps shows a red shift of the absorption edge that is consistent with an Fe(II) high-spin state, as supported by ab initio calculations. The transient signal detected at the Co K-edge is 50× weaker, confirming the ferrocene-centered character of the excited state. Fitting of the transient extended X-ray absorption fine structure region yields an Fe-C bond length increase of 0.25 ± 0.1 Å in the excited state, as expected for the high-spin state based on DFT. Altogether, these results demonstrate that the high-spin state of ferrocene should be considered when designing donor-acceptor assemblies for photocatalysis and photovoltaics.
Collapse
Affiliation(s)
- John H. Burke
- Department
of Chemistry, University of Illinois at
Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Dae Young Bae
- Department
of Chemistry, University of Illinois at
Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Rachel F. Wallick
- Department
of Chemistry, University of Illinois at
Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Conner P. Dykstra
- Department
of Chemistry, University of Illinois at
Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Thomas C. Rossi
- Department
of Atomic-Scale Dynamics in Light-Energy Conversion, Helmholtz-Zentrum Berlin für Materialien und Energie, Berlin 14109, Germany
| | - Laura E. Smith
- Department
of Chemistry, University of Illinois at
Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Clare A. Leahy
- Department
of Chemistry, University of Illinois at
Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Richard D. Schaller
- Department
of Chemistry, Northwestern University, Evanston, Illinois 60208, United States
- Center
for Nanoscale Materials, Argonne National
Laboratory, Lemont, Illinois 60439, United States
| | - Liviu M. Mirica
- Department
of Chemistry, University of Illinois at
Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Josh Vura-Weis
- Department
of Chemistry, University of Illinois at
Urbana−Champaign, Urbana, Illinois 61801, United States
| | - Renske M. van der Veen
- Department
of Chemistry, University of Illinois at
Urbana−Champaign, Urbana, Illinois 61801, United States
- Department
of Atomic-Scale Dynamics in Light-Energy Conversion, Helmholtz-Zentrum Berlin für Materialien und Energie, Berlin 14109, Germany
- Institute
of Optics and Atomic Physics, Technical
University of Berlin, 10623 Berlin, Germany
| |
Collapse
|
2
|
Swedin RK, Healy AT, Schaffner JW, Kuzmin IA, Zatsikha YV, Nemykin VN, Blank DA. Outsourcing Intersystem Crossing without Heavy Atoms: Energy Transfer Dynamics in PyridoneBODIPY-C 60 Complexes. J Phys Chem Lett 2022; 13:8845-8850. [PMID: 36112145 DOI: 10.1021/acs.jpclett.2c02388] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
The excited state dynamics in two fully characterized pyridoneBODIPY-fullerene complexes were investigated using time-resolved spectroscopy. Photoexcitation was initially localized on the pyridoneBODIPY chromophore. The energy was rapidly transferred to the fullerene, which subsequently underwent ISC to form a triplet state and returned the energy to the pyridoneBODIPY via triplet-triplet energy transfer. This ping-pong energy transfer mechanism resulted in efficient (>85%) overall conversion of the excited state pyridoneBODIPY constituent despite a complete lack of ISC in the pyridoneBODIPY in the absence of the fullerene partner. The small difference in attachment chemistry for the fullerene did not impact the initial singlet energy transfer. However, the N-methylpyrrolidine bridge did slow both the triplet-triplet energy transfer and the ultimate relaxation rate of the final triplet state when compared to an isoxazole-based bridge. The rates of each step were quantified, and computational predictions were used to complement the proposed mechanism and energetics. The result demonstrated efficient triplet sensitization of a strong chromophore that lacks significant spin-orbit coupling.
Collapse
Affiliation(s)
- Rachel K Swedin
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Andrew T Healy
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Jacob W Schaffner
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Ilya A Kuzmin
- Department of Chemistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Yuriy V Zatsikha
- Department of Chemistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
- Enamine Ltd., Chervonotkatska Street 73, Kyiv 02094, Ukraine
| | - Victor N Nemykin
- Department of Chemistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
| | - David A Blank
- Department of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| |
Collapse
|
3
|
Zatsikha YV, Schrage BR, Blesener TS, Harrison LA, Ziegler CJ, Nemykin VN. Meso
‐Carbon Atom Nucleophilic Attack Susceptibility in the Sterically Strained Antiaromatic Bis‐BODIPY Macrocycle and Extended Electron‐Deficient BODIPY Precursor**. Chemistry 2022; 28:e202201261. [DOI: 10.1002/chem.202201261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Yuriy V. Zatsikha
- Department of Chemistry University of Manitoba Winnipeg MB R3T 2N2 Canada
- Enamine Ltd Chervonotkatska Street 78 Kyiv 02094 Ukraine
| | - Briana R. Schrage
- Department of Chemistry University of Tennessee – Knoxville Knoxville TN 37996 USA
| | - Tanner S. Blesener
- Department of Chemistry University of Tennessee – Knoxville Knoxville TN 37996 USA
| | - Laurel A. Harrison
- Department of Chemistry University of Tennessee – Knoxville Knoxville TN 37996 USA
| | | | - Victor N. Nemykin
- Department of Chemistry University of Tennessee – Knoxville Knoxville TN 37996 USA
| |
Collapse
|
4
|
Fatima A, Rabah J, Allard E, Fensterbank H, Wright K, Burdzinski G, Clavier G, Sliwa M, Pino T, Méallet-Renault R, Steenkeste K, Ha-Thi MH. Selective population of triplet excited states in heavy-atom-free BODIPY-C 60 based molecular assemblies. Photochem Photobiol Sci 2022; 21:1573-1584. [PMID: 35612713 DOI: 10.1007/s43630-022-00241-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Accepted: 05/02/2022] [Indexed: 12/14/2022]
Abstract
Photophysical studies on a BODIPY-fullerene-distyryl BODIPY triad (BDP-C60-DSBDP) and its reference dyads (BODIPY-fullerene; BDP-C60 and distyryl BODIPY-fullerene; DSBDP-C60) are presented herein. In the triad, the association of the two chromophore units linked by a fullerene moiety leads to strong near UV-Visible light absorption from 300 to 700 nm. The triplet-excited state was observed upon visible excitation in all these assemblies, and shown to be localized on the C60 or BODIPY moieties. Using quantitative nanosecond transient absorption, we provide a complete investigation on the lifetime and formation quantum yield of the triplet-excited state. In the BDP-C60 dyad, the triplet excited state of C60 (τ = 7 ± 1 μs) was obtained with a quantum yield of 40 ± 8%. For the DSBDP-C60 dyad and BDP-C60-DSBDP triad, a longer-lived triplet excited state with a lifetime of around 250 ± 20 μs centered on the DSBDP moiety was formed, with respective quantum yields of 37 ± 8 and 20 ± 4%. Triplet-triplet annihilation up-conversion is characterized in the BDP-C60 dyad and the bichromophoric triad in the presence of perylene and DSBDP-monomer as respective annihilators. The photo-induced formation of a long-lived 3DSBDP* in the triad coupled with panchromatic light absorption offers potential applications as a heavy-atom-free organic triplet photosensitizer.
Collapse
Affiliation(s)
- Anam Fatima
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d'Orsay, 91405, Orsay, France
| | - Jad Rabah
- Université Paris-Saclay, UVSQ, CNRS, Institut Lavoisier de Versailles, 78000, Versailles, France
| | - Emmanuel Allard
- Université Paris-Saclay, UVSQ, CNRS, Institut Lavoisier de Versailles, 78000, Versailles, France.
| | - Hélène Fensterbank
- Université Paris-Saclay, UVSQ, CNRS, Institut Lavoisier de Versailles, 78000, Versailles, France
| | - Karen Wright
- Université Paris-Saclay, UVSQ, CNRS, Institut Lavoisier de Versailles, 78000, Versailles, France
| | - Gotard Burdzinski
- Adam Mickiewicz Univ in Poznan, Fac Phys, Quantum Elect Lab, 61614, Poznan, Poland
| | - Gilles Clavier
- Université Paris-Saclay, ENS Paris-Saclay, CNRS, PPSM, 91190, Gif-sur-Yvette, France
| | - Michel Sliwa
- Univ. Lille, CNRS, UMR 8516, LASIRE, Laboratoire de Spectroscopie pour les Interactions, la Réactivité et l'Environnement, 59 000, Lille, France
| | - Thomas Pino
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d'Orsay, 91405, Orsay, France
| | - Rachel Méallet-Renault
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d'Orsay, 91405, Orsay, France.
| | - Karine Steenkeste
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d'Orsay, 91405, Orsay, France.
| | - Minh-Huong Ha-Thi
- Université Paris-Saclay, CNRS, Institut des Sciences Moléculaires d'Orsay, 91405, Orsay, France.
| |
Collapse
|
5
|
Schrage BR, Ermilov E, Nemykin VN. Transient Absorption Spectra of Metal‐Free and Transition‐Metal 5,10,15,20‐Tetraferrocene Porphyrins: Influence of the Central Metal Ion, Solvent Polarity, and the Axial Ferrocene Ligand. Eur J Inorg Chem 2022. [DOI: 10.1002/ejic.202101007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Briana R. Schrage
- University of Tennessee System: The University of Tennessee System Chemistry UNITED STATES
| | | | - Victor N. Nemykin
- University of Tennessee System: The University of Tennessee System Department of Chemistry 1420 Circle Drive 37996 Knoxville UNITED STATES
| |
Collapse
|
6
|
Vecchi A, Sabin JR, Sabuzi F, Conte V, Cicero DO, Floris B, Galloni P, Nemykin VN. Similar, Yet Different: Long-Range Metal-Metal Coupling and Electron-Transfer Processes in Metal-Free 5,10,15,20-Tetra(ruthenocenyl)porphyrin. Inorg Chem 2021; 60:8227-8241. [PMID: 34033715 DOI: 10.1021/acs.inorgchem.1c00908] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The electronic structure, redox properties, and long-range metal-metal coupling in metal-free 5,10,15,20-tetra(ruthenocenyl)porphyrin (H2TRcP) were probed by spectroscopic (NMR, UV-vis, magnetic circular dichroism (MCD), and atmospheric pressure chemical ionization (APCI)), electrochemical (cyclic voltammetry, CV, and differential pulse voltammetry, DPV), spectroelectrochemical, and chemical oxidation methods, as well as theoretical (density functional theory, DFT, and time-dependent DFT, TDDFT) approaches. It was demonstrated that the spectroscopic properties of H2TRcP are significantly different from those in H2TFcP (metal-free 5,10,15,20-tetra(ferrocenyl)porphyrin). Ruthenocenyl fragments in H2TRcP have higher oxidation potentials than the ferrocene groups in the H2TFcP complex. Similar to H2TFcP, we were able to access and spectroscopically characterize the one- and two-electron oxidized mixed-valence states in the H2TRcP system. DFT predicts that the porphyrin π-system stabilizes the [H2TRcP]+ mixed-valence cation and prevents its dimerization, which is characteristic for ruthenocenyl systems. However, formation of the mixed-valence [H2TRcP]2+ is significantly less reproducible than the formation of [H2TRcP]+. DFT and TDDFT calculations suggest the ruthenocenyl fragment dominance in the highest occupied molecular orbital (HOMO) energy region and the presence of the low-energy MLCT (Rc → porphyrin (π*)) transitions in the visible region with energies higher than the predominantly porphyrin-centered Q-bands.
Collapse
Affiliation(s)
- Andrea Vecchi
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Rome 0133, Italy.,Department of Chemistry & Biochemistry, University of Minnesota Duluth, Duluth, Minnesota 55812, United States
| | - Jared R Sabin
- Department of Chemistry & Biochemistry, University of Minnesota Duluth, Duluth, Minnesota 55812, United States
| | - Federica Sabuzi
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Rome 0133, Italy
| | - Valeria Conte
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Rome 0133, Italy
| | - Daniel Oscar Cicero
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Rome 0133, Italy
| | - Barbara Floris
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Rome 0133, Italy
| | - Pierluca Galloni
- Department of Chemical Science and Technologies, University of Rome Tor Vergata, Rome 0133, Italy
| | - Victor N Nemykin
- Department of Chemistry & Biochemistry, University of Minnesota Duluth, Duluth, Minnesota 55812, United States.,Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
| |
Collapse
|
7
|
Huang X, Liu H, Lu D, Lin Y, Liu J, Liu Q, Nie Z, Jiang G. Mass spectrometry for multi-dimensional characterization of natural and synthetic materials at the nanoscale. Chem Soc Rev 2021; 50:5243-5280. [PMID: 33656017 DOI: 10.1039/d0cs00714e] [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
Characterization of materials at the nanoscale plays a crucial role in in-depth understanding the nature and processes of the substances. Mass spectrometry (MS) has characterization capabilities for nanomaterials (NMs) and nanostructures by offering reliable multi-dimensional information consisting of accurate mass, isotopic, and molecular structural information. In the last decade, MS has emerged as a powerful nano-characterization technique. This review comprehensively summarizes the capabilities of MS in various aspects of nano-characterization that greatly enrich the toolbox of nano research. Compared with other characterization techniques, MS has unique capabilities for real-time monitoring and tracking reaction intermediates and by-products. Moreover, MS has shown application potential in some novel aspects, such as MS imaging of the biodistribution and fate of NMs in animals and humans, stable isotopic tracing of NMs, and risk assessment of NMs, which deserve update and integration into the current knowledge framework of nano-characterization.
Collapse
Affiliation(s)
- Xiu Huang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Huihui Liu
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Dawei Lu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Yue Lin
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| | - Jingfu Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qian Liu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. and University of Chinese Academy of Sciences, Beijing 100049, China and Institute of Environment and Health, Jianghan University, Wuhan 430056, China
| | - Zongxiu Nie
- University of Chinese Academy of Sciences, Beijing 100049, China and Beijing National Laboratory for Molecular Sciences, Key Laboratory of Analytical Chemistry for Living Biosystems, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| |
Collapse
|
8
|
Zatsikha YV, Blesener TS, King AJ, Healy AT, Goff PC, Didukh NO, Blank DA, Kovtun YP, Nemykin VN. Fully Conjugated Pyrene-BODIPY and Pyrene-BODIPY-Ferrocene Dyads and Triads: Synthesis, Characterization, and Selective Noncovalent Interactions with Nanocarbon Materials. J Phys Chem B 2021; 125:360-371. [PMID: 33370123 DOI: 10.1021/acs.jpcb.0c10074] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Several pyrene-boron-dipyrromethene (BODIPY) and pyrene-BODIPY-ferrocene derivatives with a fully conjugated pyrene fragment appended to the α-position(s) of the BODIPY core have been prepared by Knoevenagel condensation reaction and characterized by one-dimensional (1D) and two-dimensional (2D) nuclear magnetic resonance (NMR), UV-vis, fluorescence spectroscopy, high-resolution mass spectrometry as well as X-ray crystallography. The redox properties of new donor-acceptor BODIPY dyads and triads were studied by electrochemical (cyclic voltammetry (CV) and differential pulse voltammetry (DPV)) and spectroelectrochemical approaches. Formation of weakly bonded noncovalent complexes between the new pyrene-BODIPYs and nanocarbon materials (C60, C70, single-walled carbon nanotube (SWCNT), and graphene) was studied by UV-vis, steady-state fluorescent, and time-resolved transient absorption spectroscopy. UV-vis and fluorescent spectroscopy are indicative of the much stronger and selective interaction between new dyes and (6,5)-SWCNT as well as graphene compared to that of C60 and C70 fullerenes. In agreement with these data, transient absorption spectroscopy provided no evidence for any significant change in excited-state lifetime or photoinduced charge transfer between pyrene-BODIPYs and C60 or C70 fullerenes when the pyrene-BODIPY chromophores were excited into the lowest-energy singlet excited state. Density functional theory (DFT) and time-dependent DFT (TDDFT) calculations suggest that the pyrene fragments are fully conjugated into the π-system of BODIPY core, which correlates well with the experimental data.
Collapse
Affiliation(s)
- Yuriy V Zatsikha
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - Tanner S Blesener
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - Alex J King
- Department of Chemistry & Biochemistry, University of Minnesota Duluth, Duluth, Minnesota 55812, United States
| | - Andrew T Healy
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Philip C Goff
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Natalia O Didukh
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada.,Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 02660 Kyiv, Ukraine
| | - David A Blank
- Department of Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Yuriy P Kovtun
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, 02660 Kyiv, Ukraine
| | - Victor N Nemykin
- Department of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada.,Department of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
| |
Collapse
|
9
|
Zatsikha Y, Shamova LI, Schaffner JW, Healy AT, Blesener TS, Cohen G, Wozniak B, Blank DA, Nemykin VN. Probing Electronic Communication and Excited-State Dynamics in the Unprecedented Ferrocene-Containing Zinc MB-DIPY. ACS OMEGA 2020; 5:28656-28662. [PMID: 33195918 PMCID: PMC7658947 DOI: 10.1021/acsomega.0c03764] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 10/15/2020] [Indexed: 05/08/2023]
Abstract
The electronic communication between two ferrocene groups in the electron-deficient expanded aza-BODIPY analogue of zinc manitoba-dipyrromethene (MB-DIPY) was probed by spectroscopic, electrochemical, spectroelectrochemical, and theoretical methods. The excited-state dynamics involved sub-ps formation of the charge-separated state in the organometallic zinc MB-DIPYs, followed by recovery of the ground state via charge recombination in 12 ps. The excited-state behavior was contrasted with that observed in the parent complex that lacked the ferrocene electron donors and has a much longer excited-state lifetime (670 ps for the singlet state). Much longer decay times observed for the parent complex without ferrocene confirm that the main quenching mechanism in the ferrocene-containing 4 is reflective of the ultrafast ferrocene-to-MB-DIPY core charge transfer (CT).
Collapse
Affiliation(s)
- Yuriy
V. Zatsikha
- Department
of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - Liliya I. Shamova
- Department
of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - Jacob W. Schaffner
- Department
of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Andrew T. Healy
- Department
of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Tanner S. Blesener
- Department
of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - Gabriel Cohen
- Department
of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - Brandon Wozniak
- Department
of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - David A. Blank
- Department
of Chemistry, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Victor N. Nemykin
- Department
of Chemistry, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
- Department
of Chemistry, University of Tennessee, Knoxville, Tennessee 37996, United States
| |
Collapse
|
10
|
Geri S, Krunclova T, Janouskova O, Panek J, Hruby M, Hernández‐Valdés D, Probst B, Alberto RA, Mamat C, Kubeil M, Stephan H. Light-Activated Carbon Monoxide Prodrugs Based on Bipyridyl Dicarbonyl Ruthenium(II) Complexes. Chemistry 2020; 26:10992-11006. [PMID: 32700815 PMCID: PMC7496190 DOI: 10.1002/chem.202002139] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Indexed: 12/13/2022]
Abstract
Two photoactivatable dicarbonyl ruthenium(II) complexes based on an amide-functionalised bipyridine scaffold (4-position) equipped with an alkyne functionality or a green-fluorescent BODIPY (boron-dipyrromethene) dye have been prepared and used to investigate their light-induced decarbonylation. UV/Vis, FTIR and 13 C NMR spectroscopies as well as gas chromatography and multivariate curve resolution alternating least-squares analysis (MCR-ALS) were used to elucidate the mechanism of the decarbonylation process. Release of the first CO molecule occurs very quickly, while release of the second CO molecule proceeds more slowly. In vitro studies using two cell lines A431 (human squamous carcinoma) and HEK293 (human embryonic kidney cells) have been carried out in order to characterise the anti-proliferative and anti-apoptotic activities. The BODIPY-labelled compound allows for monitoring the cellular uptake, showing fast internalisation kinetics and accumulation at the endoplasmic reticulum and mitochondria.
Collapse
Affiliation(s)
- Stepan Geri
- Institute of Radiopharmaceutical Cancer ResearchHelmholtz-Zentrum Dresden-RossendorfBautzner Landstrasse 40001328DresdenGermany
| | - Tereza Krunclova
- Department of Biological ModelsInstitute of Macromolecular ChemistryHeyrovsky Square 216206PragueCzech Republic
| | - Olga Janouskova
- Department of Biological ModelsInstitute of Macromolecular ChemistryHeyrovsky Square 216206PragueCzech Republic
| | - Jiri Panek
- Supramolecular Polymer SystemsInstitute of Macromolecular ChemistryHeyrovsky Square 216206PragueCzech Republic
| | - Martin Hruby
- Supramolecular Polymer SystemsInstitute of Macromolecular ChemistryHeyrovsky Square 216206PragueCzech Republic
| | | | - Benjamin Probst
- Department of ChemistryUniversity of ZurichWinterthurerstr. 1908057ZurichSwitzerland
| | - Roger A. Alberto
- Department of ChemistryUniversity of ZurichWinterthurerstr. 1908057ZurichSwitzerland
| | - Constantin Mamat
- Institute of Radiopharmaceutical Cancer ResearchHelmholtz-Zentrum Dresden-RossendorfBautzner Landstrasse 40001328DresdenGermany
| | - Manja Kubeil
- Institute of Radiopharmaceutical Cancer ResearchHelmholtz-Zentrum Dresden-RossendorfBautzner Landstrasse 40001328DresdenGermany
| | - Holger Stephan
- Institute of Radiopharmaceutical Cancer ResearchHelmholtz-Zentrum Dresden-RossendorfBautzner Landstrasse 40001328DresdenGermany
| |
Collapse
|
11
|
Zatsikha YV, Shamova LI, Blesener TS, Herbert DE, Nemykin VN. Rigid, yet flexible: formation of unprecedented silver MB-DIPY dimers with orthogonal chromophore geometry. Dalton Trans 2020; 49:5034-5038. [DOI: 10.1039/d0dt00927j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Unprecedented for BODIPY/DIPY and aza-BODIPY/azaDIPY chemistry, MB-DIPY2Ag2 dimers with a twisted chromophore geometry were prepared and characterized by spectroscopy, X-ray crystallography, and DFT calculations.
Collapse
|
12
|
Triplet BODIPY and AzaBODIPY Derived Donor‐acceptor Dyads: Competitive Electron Transfer versus Intersystem Crossing upon Photoexcitation. CHEMPHOTOCHEM 2019. [DOI: 10.1002/cptc.201900189] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
|