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Cruz Neto DH, Pugliese E, Gotico P, Quaranta A, Leibl W, Steenkeste K, Peláez D, Pino T, Halime Z, Ha-Thi MH. Time-Resolved Mechanistic Depiction of Photoinduced CO 2 Reduction Catalysis on a Urea-Modified Iron Porphyrin. Angew Chem Int Ed Engl 2024:e202407723. [PMID: 38781123 DOI: 10.1002/anie.202407723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2024] [Revised: 05/22/2024] [Accepted: 05/23/2024] [Indexed: 05/25/2024]
Abstract
The development of functional artificial photosynthetic devices relies on the understanding of mechanistic aspects involved in specialized photocatalysts. Modified iron porphyrins have long been explored as efficient catalysts for the light-induced reduction of carbon dioxide (CO2) towards solar fuels. In spite of the advancements in homogeneous catalysis, the development of the next generation of catalysts requires a complete understanding of the fundamental photoinduced processes taking place prior to and after activation of the substrate by the catalyst. In this work, we employ a state-of-the-art nanosecond optical transient absorption spectroscopic setup with a double excitation capability to induce charge accumulation and trigger the reduction of CO2 to carbon monoxide (CO). Our biomimetic system is composed of a urea-modified iron(III) tetraphenylporphyrin (UrFeIII) catalyst, the prototypical [Ru(bpy)3]2+ (bpy=2,2'-bipyridine) used as a photosensitizer, and sodium ascorbate as an electron donor. Under inert atmosphere, we show that two electrons can be successively accumulated on the catalyst as the fates of the photogenerated UrFeII and UrFeI reduced species are tracked. In the presence of CO2, the catalytic cycle is kick-started providing further evidence on CO2 activation by the UrFe catalyst in its formal FeI oxidation state.
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Affiliation(s)
- Daniel H Cruz Neto
- Institut des Sciences Moléculaires d'Orsay (ISMO), Université Paris-Saclay, CNRS, 91405, Orsay, France
| | - Eva Pugliese
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Saclay, CNRS, 91400, Orsay, France
| | - Philipp Gotico
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, 91198, Gif-sur-Yvette, France
| | - Annamaria Quaranta
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, 91198, Gif-sur-Yvette, France
| | - Winfried Leibl
- Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, CEA, CNRS, 91198, Gif-sur-Yvette, France
| | - Karine Steenkeste
- Institut des Sciences Moléculaires d'Orsay (ISMO), Université Paris-Saclay, CNRS, 91405, Orsay, France
| | - Daniel Peláez
- Institut des Sciences Moléculaires d'Orsay (ISMO), Université Paris-Saclay, CNRS, 91405, Orsay, France
| | - Thomas Pino
- Institut des Sciences Moléculaires d'Orsay (ISMO), Université Paris-Saclay, CNRS, 91405, Orsay, France
| | - Zakaria Halime
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Saclay, CNRS, 91400, Orsay, France
| | - Minh-Huong Ha-Thi
- Institut des Sciences Moléculaires d'Orsay (ISMO), Université Paris-Saclay, CNRS, 91405, Orsay, France
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2
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Szemik-Hojniak A, Deperasińska I, Erez Y, Gawłowska M, Jerzykiewicz L. Ultrafast excited state dynamics of pyridine N-oxide derivative in solution; femtosecond fluorescence up-conversion and theoretical calculations. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 285:121896. [PMID: 36183536 DOI: 10.1016/j.saa.2022.121896] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Revised: 08/29/2022] [Accepted: 09/13/2022] [Indexed: 06/16/2023]
Abstract
In this study we have investigated 2-ethylamino-4-nitro-6-methyl pyridine N-oxide (2E6M) molecule that belongs to important group of Proton Coupled Electron Transfer (PCET) compounds where both the charge transfer (CT) and proton transfer processes in excited states may proceed. In this case, this is possible due to the donors and acceptors of electrons and protons in this system, as well as due to the presence of intramolecular {N-H… O [2,566(3) Å}, hydrogen bond.Using stationary and time-resolved spectroscopy, as well as quantum chemical calculations on the DFT and TD DFT B3LYP/6-31G (d,p) level of theory, a partial CT nature of the S0 → S1 transition in both tautomeric forms (N and T) has been revealed. Additionally, the excited state intramolecular proton transfer (ESIPT) process shown to be more favorable in apolar and weakly polar solvents than in strongly polar acetonitrile (EN(S1) > ET(S1). The displacement of charge from the amine group and the ring to the nitro group has been observed on the changing shapes of the HOMO and LUMO orbitals involved in this transition what further quantitatively allowed to realize the increase in the dipole moment of both forms in the electronic excited state. The calculations show that in two solvents with radically different polarity (heptane, acetonitrile), dipole moments of both forms are very similar [in acetonitrile uN(S1) and uT(S1) are 11.0 D and 11.5 D, respectively]. Hence, in polar media both forms can be stabilized in a comparable manner. This made it difficult for us to assign a single fluorescent band in acetonitrile to one of the tautomeric forms. However, it seems that due to application of time-resolved spectroscopy, this problem has been clarified. The TCSPC decay curve in acetonitrile with an ultrafast lifetime assigned to the (N) form, along with the femtosecond up-conversion signals that demonstrated only an ultrafast decay without any rise-time of a new excited (T) species, allowed us to conclude that in 2E6M in strongly polar solvent the ESIPT does not occur.The unique fluorescence band origins from the (N) form. In protic solvents, the significant kinetic isotopic effects have provided us with conclusive evidence for the presence of the solvent-assisted ESIPT process. Furthermore, it was noticed that the fluorescence lifetime in D2O (100-120 fs) estimated from the up-conversion signals is about 40 times shorter relative to methanol. This may suggest that the sine qua non for the ESIPT process in 2E6M in protic solvents is the formation of a complex with a solvent molecule in the hydrogen bridge between the proton donor and proton acceptor, respectively.
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Affiliation(s)
- Anna Szemik-Hojniak
- Faculty of Chemistry, University of Wroclaw, Joliot-Curie 14 st, 50-383 Wrocław, Poland; The Angelus Silesius State University of Applied Sciences, Institute of Health, Zamkowa 4 str 58-300 Wałbrzych, Poland.
| | - Irena Deperasińska
- Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46,02-668 Warsaw, Poland
| | - Yuval Erez
- Raymond and Beverly Sackler Faculty of Exact Sciences, School of Chemistry, Tel Aviv University, Tel Aviv 69978, Israel
| | - Monika Gawłowska
- The Angelus Silesius State University of Applied Sciences, Institute of Health, Zamkowa 4 str 58-300 Wałbrzych, Poland
| | - L Jerzykiewicz
- Faculty of Chemistry, University of Wroclaw, Joliot-Curie 14 st, 50-383 Wrocław, Poland
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3
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A new palladium-based antiproliferative agent: synthesis, characterization, computational calculations, cytotoxicity, and DNA binding properties. Biometals 2021; 34:1173-1189. [PMID: 34363565 DOI: 10.1007/s10534-021-00335-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Accepted: 07/29/2021] [Indexed: 10/20/2022]
Abstract
A new palladium(II) complex entitled [Pd(phendione)(8Q)]NO3, (PdPQ), where phendione is N,N-donor heterocyclic 1,10-phenanthroline-5,6-dion and 8Q is 8-hydroxyquinolinate, has been synthesized and then characterized by molar conductivity, CHN analysis and spectral data (UV-Vis, FT-IR, NMR). DFT/ TDDFT procedures were also performed to determine the electronic structure and the nature of the electronic transitions of PdPQ. Moreover, the affinity and binding properties of DNA to the desired complex have been studied in details using electronic absorption, fluorescence, circular dichroism spectroscopies, and viscosity measurement in combination with molecular docking technique. The obtained results exhibit relatively high DNA binding values with a static quenching mechanism, which suggest that an intercalative mode plays a peridominate role in interaction process concluded by experimental/theoretical measurements. As a result of drug exposure, in vitro cytotoxicity assay demonstrated the antiproliferative activity of the PdPQ against leukemia cancer cell line, K562.
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4
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Linscott EB, Cole DJ, Hine NDM, Payne MC, Weber C. ONETEP + TOSCAM: Uniting Dynamical Mean Field Theory and Linear-Scaling Density Functional Theory. J Chem Theory Comput 2020; 16:4899-4911. [PMID: 32433876 DOI: 10.1021/acs.jctc.0c00162] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We introduce the unification of dynamical mean field theory (DMFT) and linear-scaling density functional theory (DFT), as recently implemented in ONETEP, a linear-scaling DFT package, and TOSCAM, a DMFT toolbox. This code can account for strongly correlated electronic behavior while simultaneously including the effects of the environment, making it ideally suited for studying complex and heterogeneous systems that contain transition metals and lanthanides, such as metalloproteins. We systematically introduce the necessary formalism, which must account for the nonorthogonal basis set used by ONETEP. In order to demonstrate the capabilities of this code, we apply it to carbon monoxide ligated iron porphyrin and explore the distinctly quantum-mechanical character of the iron 3d electrons during the process of photodissociation.
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Affiliation(s)
- Edward B Linscott
- Theory and Simulation of Materials (THEOS), École Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland
| | - Daniel J Cole
- School of Natural and Environmental Sciences, Newcastle University, Newcastle upon Tyne NE1 7RU, United Kingdom
| | - Nicholas D M Hine
- Department of Physics, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Michael C Payne
- Theory of Condensed Matter, Cavendish Laboratory, University of Cambridge, 19 JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom
| | - Cédric Weber
- Theory and Simulation of Condensed Matter, King's College London, The Strand, London WC2R 2LS, United Kingdom
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5
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Ben Amor N, Heitz M. RASPT2 study of the valence excited states of an iron–porphyrin–carbonyl model complex. J Comput Chem 2019; 40:1614-1621. [DOI: 10.1002/jcc.25819] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 02/25/2019] [Accepted: 02/25/2019] [Indexed: 11/10/2022]
Affiliation(s)
- Nadia Ben Amor
- Laboratoire de Chimie et Physique QuantiquesUniversité de Toulouse et CNRS UT3 ‐ Paul Sabatier 118, Route de Narbonne, F‐31062, Toulouse Cedex France
| | - Marie‐Catherine Heitz
- Laboratoire de Chimie et Physique QuantiquesUniversité de Toulouse et CNRS UT3 ‐ Paul Sabatier 118, Route de Narbonne, F‐31062, Toulouse Cedex France
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6
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Toda MJ, Lodowski P, Mamun AA, Jaworska M, Kozlowski PM. Photolytic properties of the biologically active forms of vitamin B12. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2018.12.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Mamun AA, Toda MJ, Kozlowski PM. Can photolysis of the Co C bond in coenzyme B12-dependent enzymes be used to mimic the native reaction? JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2019; 191:175-184. [DOI: 10.1016/j.jphotobiol.2018.12.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Revised: 12/19/2018] [Accepted: 12/20/2018] [Indexed: 12/22/2022]
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8
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Campetella M, Perfetto A, Ciofini I. Quantifying partial hole-particle distance at the excited state: A revised version of the DCT index. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2018.10.060] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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9
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Falahati K, Tamura H, Burghardt I, Huix-Rotllant M. Ultrafast carbon monoxide photolysis and heme spin-crossover in myoglobin via nonadiabatic quantum dynamics. Nat Commun 2018; 9:4502. [PMID: 30374057 PMCID: PMC6206034 DOI: 10.1038/s41467-018-06615-1] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2017] [Accepted: 09/14/2018] [Indexed: 11/28/2022] Open
Abstract
Light absorption of myoglobin triggers diatomic ligand photolysis and a spin crossover transition of iron(II) that initiate protein conformational change. The photolysis and spin crossover reactions happen concurrently on a femtosecond timescale. The microscopic origin of these reactions remains controversial. Here, we apply quantum wavepacket dynamics to elucidate the ultrafast photochemical mechanism for a heme-carbon monoxide (heme-CO) complex. We observe coherent oscillations of the Fe-CO bond distance with a period of 42 fs and an amplitude of ∼1 Å. These nuclear motions induce pronounced geometric reorganization, which makes the CO dissociation irreversible. The reaction is initially dominated by symmetry breaking vibrations inducing an electron transfer from porphyrin to iron. Subsequently, the wavepacket relaxes to the triplet manifold in ∼75 fs and to the quintet manifold in ∼430 fs. Our results highlight the central role of nuclear vibrations at the origin of the ultrafast photodynamics of organometallic complexes.
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Affiliation(s)
- Konstantin Falahati
- Institute of Physical and Theoretical Chemistry, Goethe University Frankfurt, Frankfurt, 60438, Germany
| | - Hiroyuki Tamura
- Department of Chemical System Engineering, The University of Tokyo, Tokyo, 113-8656, Japan
| | - Irene Burghardt
- Institute of Physical and Theoretical Chemistry, Goethe University Frankfurt, Frankfurt, 60438, Germany.
| | - Miquel Huix-Rotllant
- Institute of Physical and Theoretical Chemistry, Goethe University Frankfurt, Frankfurt, 60438, Germany.
- Aix Marseille Univ, CNRS, ICR, Marseille, France.
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10
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de Lima Batista AP, de Oliveira-Filho AGS, Galembeck SE. Photophysical properties and the NO photorelease mechanism of a ruthenium nitrosyl model complex investigated using the CASSCF-in-DFT embedding approach. Phys Chem Chem Phys 2018; 19:13860-13867. [PMID: 28513675 DOI: 10.1039/c7cp01642e] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A complete state-averaged active space self-consistent field (SA-CASSCF) calculation by means of the SA-CASSCF(18,14)-in-BP86 Miller-Manby embedding approach was performed to explore the ground and excited electronic states of the trans-[RuCl(NO)(NH3)4]2+ complex. Insights into the NO photodissociation mechanism and Ru-NO bonding properties are provided. In addition, spin-orbit (SO) interactions were taken into account to describe and characterize the spin-forbidden transitions observed at the low-energy regions of the trans-[RuCl(NO)(NH3)4]2+ UV-Vis spectrum. The SA-CASSCF(18,14)-in-BP86 electronic spectrum is in great agreement with the experimental data of Schreiner [Schreiner et al., Inorg. Chem., 1972, 11, 880].
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Affiliation(s)
- Ana P de Lima Batista
- Departamento de Química, Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo, Ribeirão Preto, SP, Brazil.
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11
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Ben Amor N, Soupart A, Heitz MC. Methodological CASPT2 study of the valence excited states of an iron-porphyrin complex. J Mol Model 2017; 23:53. [DOI: 10.1007/s00894-017-3226-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Accepted: 01/12/2017] [Indexed: 10/20/2022]
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12
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Maiti B, Manna AK, McCleese C, Doane TL, Chakrapani S, Burda C, Dunietz BD. Photoinduced Homolytic Bond Cleavage of the Central Si–C Bond in Porphyrin Macrocycles Is a Charge Polarization Driven Process. J Phys Chem A 2016; 120:7634-7640. [DOI: 10.1021/acs.jpca.6b05610] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Buddhadev Maiti
- Department of Chemistry
and Biochemistry and Department of Chemistry, Kent State University, Kent, Ohio 44242, United States
- Department of Chemistry and ∥Department of Physiology
and Biophysics, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Arun K. Manna
- Department of Chemistry
and Biochemistry and Department of Chemistry, Kent State University, Kent, Ohio 44242, United States
- Department of Chemistry and ∥Department of Physiology
and Biophysics, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Christopher McCleese
- Department of Chemistry
and Biochemistry and Department of Chemistry, Kent State University, Kent, Ohio 44242, United States
- Department of Chemistry and ∥Department of Physiology
and Biophysics, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Tennyson L. Doane
- Department of Chemistry
and Biochemistry and Department of Chemistry, Kent State University, Kent, Ohio 44242, United States
- Department of Chemistry and ∥Department of Physiology
and Biophysics, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Sudha Chakrapani
- Department of Chemistry
and Biochemistry and Department of Chemistry, Kent State University, Kent, Ohio 44242, United States
- Department of Chemistry and ∥Department of Physiology
and Biophysics, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Clemens Burda
- Department of Chemistry
and Biochemistry and Department of Chemistry, Kent State University, Kent, Ohio 44242, United States
- Department of Chemistry and ∥Department of Physiology
and Biophysics, Case Western Reserve University, Cleveland, Ohio 44106, United States
| | - Barry D. Dunietz
- Department of Chemistry
and Biochemistry and Department of Chemistry, Kent State University, Kent, Ohio 44242, United States
- Department of Chemistry and ∥Department of Physiology
and Biophysics, Case Western Reserve University, Cleveland, Ohio 44106, United States
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13
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McMahon S, Amirjalayer S, Buma WJ, Halpin Y, Long C, Rooney AD, Woutersen S, Pryce MT. An investigation into the photochemistry of, and the electrochemically induced CO-loss from, [(CO)5MC(OMe)Me](M = Cr or W) using low-temperature matrix isolation, picosecond infrared spectroscopy, cyclic voltammetry, and time-dependent density functional theory. Dalton Trans 2015; 44:15424-34. [PMID: 26089130 DOI: 10.1039/c5dt01568e] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photophysics and photochemistry of [(CO)5MC(OMe)Me] (M = Cr or W) were investigated using picosecond time-resolved infrared spectroscopy (M = Cr or W), low-temperature matrix isolation techniques (M = Cr), and time-dependent density functional calculations (M = Cr or W). These studies provide unambiguous evidence for the photochemical formation of a long-lived, 18-electron metallaketene species capable of acting as a synthetically useful intermediate. For the Cr complex, an intermediate metallacyclopropanone singlet excited state was detected on the reaction path to the metallaketene species. This metallacyclopropanone excited state species has a lifetime of less than 100 ps and a characteristic bridging carbonyl band at 1770 cm(-1). The tungsten ketene species was also detected but in contrast to the chromium system, this forms directly from a low-lying triplet excited state. The electrochemical release of CO showed a greater efficiency for the chromium complex when compared to the tungsten.
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Affiliation(s)
- Suzanne McMahon
- School of Chemical Sciences, Dublin City University, Dublin 9, Ireland.
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14
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Manton JC, Amirjalayer S, Coleman AC, McMahon S, Harvey EC, Greetham GM, Clark IP, Buma WJ, Woutersen S, Pryce MT, Long C. Excited state evolution towards ligand loss and ligand chelation at group 6 metal carbonyl centres. Dalton Trans 2014; 43:17797-805. [PMID: 25093429 DOI: 10.1039/c4dt01544d] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The photochemistry and photophysics of three model "half-sandwich" complexes (η(6)-benzophenone)Cr(CO)3, (η(6)-styrene)Cr(CO)3, and (η(6)-allylbenzene)Cr(CO)3 were investigated using pico-second time-resolved infrared spectroscopy and time-dependent density functional theory methods. The (η(6)-benzophenone)Cr(CO)3 complex was studied using two excitation wavelengths (470 and 320 nm) while the remaining complexes were irradiated using 400 nm light. Two independent excited states were detected spectroscopically for each complex, one an unreactive excited state of metal-to-arene charge-transfer character and the other with metal-to-carbonyl charge transfer character. This second excited state leads to an arrested release of CO on the pico-second time-scale. Low-energy excitation (470 nm) of (η(6)-benzophenone)Cr(CO)3 populated only the unreactive excited state which simply relaxes to the parent complex. Higher energy irradiation (320 nm) induced CO-loss. Irradiation of (η(6)-styrene)Cr(CO)3, or (η(6)-allylbenzene)Cr(CO)3 at 400 nm provided evidence for the simultaneous population of both the reactive and unreactive excited states. The efficiency at which the unreactive excited state is populated depends on the degree of conjugation of the substituent with the arene π-system and this affects the efficiency of the CO-loss process. The quantum yield of CO-loss is 0.50 for (η(6)-allylbenzene)Cr(CO)3 and 0.43 for (η(6)-styrene)Cr(CO)3. These studies provide evidence for the existence of two photophysical routes to CO loss, a minor ultrafast route and an arrested mechanism involving the intermediate population of a reactive excited state. This reactive excited state either relaxes to reform the parent species or eject CO. Thus the quantum yield of the CO-loss is strongly dependent on the excitation wavelength. Time-dependent density functional theory calculations confirm that the state responsible for ultrafast CO-loss has significant metal-centred character while the reactive state responsible for the arrested CO-loss has significant metal-to-carbonyl charge-transfer character. The CO-loss product (η(6)-allylbenzene)Cr(CO)2 formed following irradiation of (η(6)-allylbenzene)Cr(CO)3 reacts further with the pendent alkenyl group to form the chelate product (η(6),η(2)-allylbenzene)Cr(CO)2.
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Affiliation(s)
- Jennifer C Manton
- School of Chemical Sciences, Dublin City University, Dublin 9, Ireland.
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15
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Lodowski P, Jaworska M, Andruniów T, Garabato BD, Kozlowski PM. Mechanism of Co–C Bond Photolysis in the Base-On Form of Methylcobalamin. J Phys Chem A 2014; 118:11718-34. [DOI: 10.1021/jp508513p] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Piotr Lodowski
- Department
of Theoretical Chemistry, Institute of Chemistry, University of Silesia, Szkolna 9, PL-40 006 Katowice, Poland
| | - Maria Jaworska
- Department
of Theoretical Chemistry, Institute of Chemistry, University of Silesia, Szkolna 9, PL-40 006 Katowice, Poland
| | - Tadeusz Andruniów
- Institute
of Physical and Theoretical Chemistry, Department of Chemistry, Wroclaw University of Technology, 50-370 Wroclaw, Poland
| | - Brady D. Garabato
- Department
of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | - Pawel M. Kozlowski
- Department
of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
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16
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Miao TF, Li J, Li S, Wang NL. Theoretical Studies on DNA-Photocleavage Efficiency and Mechanism of Functionalized Ru(II) Polypyridyl Complexes. J Phys Chem A 2014; 118:5692-9. [DOI: 10.1021/jp502937b] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Ti-Fang Miao
- School
of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, People’s Republic of China
- State Key Laboratory of Theoretical and Computational Chemistry, Changchun 130023, People’s Republic of China
| | - Jun Li
- Department
of Chemistry, Guangdong University of Education, Guangzhou 510303, People’s Republic of China
| | - Shuang Li
- School
of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, People’s Republic of China
| | - Na-Li Wang
- School
of Chemistry and Materials Science, Huaibei Normal University, Huaibei 235000, People’s Republic of China
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17
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Gieseking RL, Mukhopadhyay S, Risko C, Marder SR, Brédas JL. 25th anniversary article: Design of polymethine dyes for all-optical switching applications: guidance from theoretical and computational studies. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:68-83. [PMID: 24302357 DOI: 10.1002/adma.201302676] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 07/29/2013] [Indexed: 06/02/2023]
Abstract
All-optical switching--controlling light with light--has the potential to meet the ever-increasing demand for data transmission bandwidth. The development of organic π-conjugated molecular materials with the requisite properties for all-optical switching applications has long proven to be a significant challenge. However, recent advances demonstrate that polymethine dyes have the potential to meet the necessary requirements. In this review, we explore the theoretical underpinnings that guide the design of π-conjugated materials for all-optical switching applications. We underline, from a computational chemistry standpoint, the relationships among chemical structure, electronic structure, and optical properties that make polymethines such promising materials.
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Affiliation(s)
- Rebecca L Gieseking
- School of Chemistry and Biochemistry Center for Organic Photonics and Electronics and Center for Organic Materials for All-Optical Switching, Georgia Institute of Technology, Atlanta, Georgia, 30332-0400, USA
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18
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TD-DFT accuracy in determining excited-state structures and fluorescence spectra of firefly emitter. Chem Res Chin Univ 2013. [DOI: 10.1007/s40242-013-3050-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Garino C, Salassa L. The photochemistry of transition metal complexes using density functional theory. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2013; 371:20120134. [PMID: 23776295 DOI: 10.1098/rsta.2012.0134] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The use of density functional theory (DFT) and time-dependent DFT (TD-DFT) to study the photochemistry of metal complexes is becoming increasingly important among chemists. Computational methods provide unique information on the electronic nature of excited states and their atomic structure, integrating spectroscopy observations on transient species and excited-state dynamics. In this contribution, we present an overview on photochemically active transition metal complexes investigated by DFT. In particular, we discuss a representative range of systems studied up to now, which include CO- and NO-releasing inorganic and organometallic complexes, haem and haem-like complexes dissociating small diatomic molecules, photoactive anti-cancer Pt and Ru complexes, Ru polypyridyls and diphosphino Pt derivatives.
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Affiliation(s)
- Claudio Garino
- Department of Chemistry and NIS Centre of Excellence, University of Turin, via P. Giuria 7, 10125 Turin, Italy
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20
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Zhang P, Ahn SW, Straub JE. “Strange Kinetics” in the Temperature Dependence of Methionine Ligand Rebinding Dynamics in Cytochrome c. J Phys Chem B 2013; 117:7190-202. [DOI: 10.1021/jp400481m] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Ping Zhang
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
| | - Steven Wooseok Ahn
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
| | - John E. Straub
- Department of Chemistry, Boston University, Boston, Massachusetts 02215, United States
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21
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CHE XIN, GAO JUN, DU LIKAI, LIU CHENGBU. THEORETICAL INVESTIGATION OF THE HIGH-SPIN "Fe-PROXIMAL OXYGEN" CATALYTIC MECHANISM OF RAT CYSTEINE DIOXYGENASE. JOURNAL OF THEORETICAL & COMPUTATIONAL CHEMISTRY 2013. [DOI: 10.1142/s0219633613500016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Cysteine dioxygenase (CDO) catalyzes the oxidation of cysteine to cysteine sulfinate, which has crucial roles in the metabolism and bioconversion. The catalyzed reaction mechanism of CDO is currently disputed. Herein, a high-spin " Fe -proximal oxygen" catalytic mechanism of rat CDO is theoretically investigated with an energy barrier of 15.7 kcal⋅mol-1. In the mechanism, the Fe -proximal oxygen atom firstly attacks the sulfur atom of cysteine by the swing of O (1)– O (2) bond, and this makes the Fe -proximal oxygen atom O (1) accessible to S and Fe -terminal oxygen atom O (2) be closed to Fe . Then the generated seven-membered ring intermediate has smaller tension and could help the reaction take place easily. The reaction ends in the formation of the product cysteine sulfinic acid with the second oxygen atom O (2) transferred to S. This study gives an additional insight of the reaction mechanism of CDO, where the " Fe -proximal oxygen" and " Fe -terminal oxygen" mechanisms are both favorable in the catalytic process.
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Affiliation(s)
- XIN CHE
- Key Lab of Colloid and Interface Chemistry, Ministry of Education, Institute of Theoretical Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
| | - JUN GAO
- Key Lab of Colloid and Interface Chemistry, Ministry of Education, Institute of Theoretical Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
| | - LIKAI DU
- Key Lab of Colloid and Interface Chemistry, Ministry of Education, Institute of Theoretical Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
| | - CHENGBU LIU
- Key Lab of Colloid and Interface Chemistry, Ministry of Education, Institute of Theoretical Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
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22
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Miao TF, Li S, Chen JC, Wang NL, Zheng KC. Theoretical studies on DNA-photocleavage efficiencies of Ru(ii) polypyridyl complexes. Dalton Trans 2013. [DOI: 10.1039/c2dt31998e] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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23
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Miao TF, Li S, Chen JC, Ma F, Zheng KC. Theoretical studies on DNA-photocleavage efficiencies and mechanisms of Ru(II) polypyridyl complexes. J Biol Inorg Chem 2012; 17:1177-85. [PMID: 22899357 DOI: 10.1007/s00775-012-0931-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2012] [Accepted: 07/29/2012] [Indexed: 11/24/2022]
Abstract
Theoretical studies on the DNA-photocleavage efficiencies and mechanisms of Ru(II) complexes [Ru(bpy)(2)(L)](2+) (bpy = 2,2'-bipyridine; L: dppz = dipyrido[3,2-a:2',3'-c]phenazine; mitatp = 5-methoxy-isatino[1,2-b]-1,4,8,9-tetraazatriphenylene; nitatp = 5-nitro-isatino [1,2-b]-1,4,8,9-tetraazatriphenylene) 1-3 were carried out using density functional theory (DFT). First, the accuracies of redox potentials computed for [Ru(bpy)(3)](2+) in the ground state and the excited state by different computational methods were tested, and then the redox potentials of complexes 1-3 in their excited states were computed accurately. Secondly, the trend in the DNA-photocleavage efficiencies (ϕ) of complexes 1-3 [i.e., ϕ(2) > ϕ(3) > ϕ(1)] was reasonably well explained by their excited-state reduction potentials and their electron-transfer activation energies. Finally, the photoinduced oxidation-reduction mechanism utilized by these complexes was explored, and the DNA-photocleavage process was explained rationally.
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Affiliation(s)
- Ti-Fang Miao
- College of Chemistry and Materials Science, Huaibei Normal University, Huaibei, 235000, China.
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24
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25
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Long C. Potential energy mapping of the excited-states of (η6-arene)Cr(CO)3 complexes: the evolution toward CO-loss or haptotropic shift processes. J Phys Chem A 2012; 116:6845-50. [PMID: 22650265 DOI: 10.1021/jp301118v] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The potential energy profiles of the optically accessible excited states of two model (η(6)-arene)Cr(CO)(3) systems were explored using Time-Dependent Density Functional Theory. Two photochemical reactions were investigated, CO-loss and the haptotropic or ring-slip of the arene ligand. In both cases the photochemical reaction requires the surmounting of a small thermal barrier in the lowest energy excited state. In the case of (η(6)-benzene)Cr(CO)(3) only one excited state is populated following 400 nm excitation and this leads to the release of CO. The calculated energy barrier to this process is 13 kJ mol(-1). In the case of (η(6)-thiophenol)Cr(CO)(3) two excited states are accessible one leading to CO-loss while the other results in the ring-slip process. The calculated barrier to the ring-slip process is 11 kJ mol(-1). The calculations are consistent with the results of picosecond time-resolved infrared studies.
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Affiliation(s)
- Conor Long
- School of Chemical Sciences, Dublin City University, Dublin 9, Ireland.
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26
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Zhang P, Małolepsza E, Straub JE. Dynamics of Methionine Ligand Rebinding in Cytochrome c. J Phys Chem B 2012; 116:6980-90. [DOI: 10.1021/jp300783j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ping Zhang
- Department
of Chemistry, Boston University, Boston,
Massachusetts 02215, United States
| | - Edyta Małolepsza
- Department
of Chemistry, Boston University, Boston,
Massachusetts 02215, United States
| | - John E. Straub
- Department
of Chemistry, Boston University, Boston,
Massachusetts 02215, United States
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27
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Zheng W, Wu S, Zhao S, Geng Y, Jin J, Su Z, Fu Q. Carbonyl Amine/Schiff Base Ligands in Manganese Complexes: Theoretical Study on the Mechanism, Capability of NO Release. Inorg Chem 2012; 51:3972-80. [DOI: 10.1021/ic2011953] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Weili Zheng
- Institute of Functional Material Chemistry, Faculty
of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
| | - Shuixing Wu
- Institute of Functional Material Chemistry, Faculty
of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
| | - Shanshan Zhao
- Institute of Functional Material Chemistry, Faculty
of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
| | - Yun Geng
- Institute of Functional Material Chemistry, Faculty
of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
| | - Junling Jin
- Institute of Functional Material Chemistry, Faculty
of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
| | - Zhongmin Su
- Institute of Functional Material Chemistry, Faculty
of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
| | - Qiang Fu
- Institute of Functional Material Chemistry, Faculty
of Chemistry, Northeast Normal University, Changchun 130024, Jilin, People’s Republic of China
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28
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Sun H, Tian X, Wang J, Zhang J, Yuan Y, Sun ZR. Theoretical studies on molecular and structures of mono- and binuclear chromium carbazole derivatives for optoelectronics. J Phys Chem A 2011; 115:14495-501. [PMID: 22040158 DOI: 10.1021/jp2066452] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Studies on the molecular geometries, electronic properties and second-order nonlinearities of a series of mono- and binuclear chromium carbazole complexes: (N-vinylcarbazole)Cr(CO)(3) (M1), (N-vinylcarbazole)Cr(CO)(2)PPh(3) (M2), (CO)(3)Cr(N-vinylcarbazole)Cr(CO)(3) (B1), and (CO)(3)Cr(N-vinylcarbazole)Cr(CO)(2)PPh(3) (B2) were carried out, using the density functional theory (DFT) at the B3LYP//LanL2DZ/6-31G(d) level. The experimental singlet metal-to-ligand charge transfer ((1)MLCT) spectra of these complexes can also be well simulated and discussed by the time-dependent DFT (TDDFT) at the B3LYP//LanL2DZ/6-311+G(d) level associated with the polarizable continuum model (PCM). The computational results show that an unusual characteristic of chromium carbazole structures is explained in terms of interaction between frontier molecular orbitals of the metal and its ligands. The highest occupied molecular orbitals (HOMOs) of these complexes are composed of a set of distorted degenerated Cr 3d orbitals, whereas the lowest unoccupied molecular orbitals (LUMOs) are predominantly the N-vinylcarbazole ligand π* orbitals. The HOMO-LUMO energy gaps decrease in the order NVC > M1 > B1 > M2 > B2. The considerable coupling between the carbazole and (CO)(3) in M1 creates an asymmetric environment about the chromium atom, leading to modest second-order responses. The PPh(3) ligand is acting as a donor which increases the donating strength of the d(π) orbitals in chromium carbazole species, resulting in the large electronic asymmetry in M2. As for the binuclear chromium carbazole chromophores, a wide-range (1)MLCT band and large oscillator strength are found, allowing for the electronic interactions between two metal centers which can be modified by altering the ligand bound to the metals to induce peculiar asymmetry. Essentially, Cr(CO)(3) acceptor and Cr(CO)(2)PPh(3) donor units in B2 make significant contribution to the charge-transfer process or NLO responses via conventional push-pull chromophoric architecture.
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Affiliation(s)
- Haitao Sun
- Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, People's Republic of China
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29
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Lodowski P, Jaworska M, Kornobis K, Andruniów T, Kozlowski PM. Electronic and Structural Properties of Low-lying Excited States of Vitamin B12. J Phys Chem B 2011; 115:13304-19. [DOI: 10.1021/jp200911y] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Piotr Lodowski
- Department of Theoretical Chemistry, Institute of Chemistry, University of Silesia, Szkolna 9, PL-40 006 Katowice, Poland
| | - Maria Jaworska
- Department of Theoretical Chemistry, Institute of Chemistry, University of Silesia, Szkolna 9, PL-40 006 Katowice, Poland
| | - Karina Kornobis
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
| | - Tadeusz Andruniów
- Institute of Physical and Theoretical Chemistry, Department of Chemistry, Wroclaw University of Technology, 50-370 Wroclaw, Poland
| | - Pawel M. Kozlowski
- Department of Chemistry, University of Louisville, Louisville, Kentucky 40292, United States
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30
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Falvo C, Meier C. A fluctuating quantum model of the CO vibration in carboxyhemoglobin. J Chem Phys 2011; 134:214106. [DOI: 10.1063/1.3592707] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
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31
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Sharma S, Singh H, Harvey JN, Balint-Kurti GG. Design of an infrared laser pulse to control the multiphoton dissociation of the Fe-CO bond in CO-heme compounds. J Chem Phys 2010; 133:174103. [PMID: 21054002 DOI: 10.1063/1.3494543] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Optimal control theory is used to design a laser pulse for the multiphoton dissociation of the Fe-CO bond in the CO-heme compounds. The study uses a hexacoordinated iron-porphyrin-imidazole-CO complex in its ground electronic state as a model for CO liganded to the heme group. The potential energy and dipole moment surfaces for the interaction of the CO ligand with the heme group are calculated using density functional theory. Optimal control theory, combined with a time-dependent quantum dynamical treatment of the laser-molecule interaction, is then used to design a laser pulse capable of efficiently dissociating the CO-heme complex model. The genetic algorithm method is used within the mathematical framework of optimal control theory to perform the optimization process. This method provides good control over the parameters of the laser pulse, allowing optimized pulses with simple time and frequency structures to be designed. The dependence of photodissociation yield on the choice of initial vibrational state and of initial laser field parameters is also investigated. The current work uses a reduced dimensionality model in which only the Fe-C and C-O stretching coordinates are explicitly taken into account in the time-dependent quantum dynamical calculations. The limitations arising from this are discussed in Sec. IV.
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Affiliation(s)
- Sitansh Sharma
- Center for Computational Natural Sciences and Bioinformatics, International institute of Information Technology, Hyderabad 500032, India.
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32
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Miao TF, Li J, Liao SY, Zheng KC, Ji LN. Theoretical studies on DNA-binding, DNA-photocleavage and spectral properties of Co(III) complexes [Co(phen)2(L)]3+ (L=pip, hpip, hnaip). Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2010.07.042] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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33
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Min CG, Ren AM, Guo JF, Zou LY, Goddard JD, Sun CC. Theoretical investigation on the origin of yellow-green firefly bioluminescence by time-dependent density functional theory. Chemphyschem 2010; 11:2199-204. [PMID: 20480487 DOI: 10.1002/cphc.200900821] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The question whether the emitter of yellow-green firefly bioluminescence is the enol or keto-constrained form of oxyluciferin (OxyLH(2)) still has no definitive answer from experiment or theory. In this study, Arg220, His247, adenosine monophosphate (AMP), Water324, Phe249, Gly343, and Ser349, which make the dominant contributions to color tuning of the fluorescence, are selected to simulate the luciferase (Luc) environment and thus elucidate the origin of firefly bioluminescence. Their respective and compositive effects on OxyLH(2) are considered and the electronic absorption and emission spectra are investigated with B3LYP, B3PW91, and PBE1KCIS methods. Comparing the respective effects in the gas and aqueous phases revealed that the emission transition is prohibited in the gas phase but allowed in the aqueous phase. For the compositive effects, the optimized geometry shows that OxyLH(2) exists in the keto(-1) form when Arg220, His247, AMP, Water324, Phe249, Gly343, and Ser349 are all included in the model. Furthermore, the emission maximum wavelength of keto(-1)+Arg+His+AMP+H(2)O+Phe+Gly+Ser is close to the experimental value (560 nm). We conclude that the keto(-1) form of OxyLH(2) is a possible emitter which can produce yellow-green bioluminescence because of the compositive effects of Arg220, His247, AMP, Water324, Phe249, Gly343, and Ser349 in the luciferase environment. Moreover, AMP may be involved in enolization of the keto(-1) form of OxyLH(2). Water324 is indispensable with respect to the environmental factors around luciferin (LH(2)).
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Affiliation(s)
- Chun-Gang Min
- State Key Laboratory of Theoretical and Computational Chemistry, Institute of Theoretical Chemistry, Jilin University, Changchun, PR China
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34
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Salassa L, Garino C, Salassa G, Nervi C, Gobetto R, Lamberti C, Gianolio D, Bizzarri R, Sadler PJ. Ligand-selective photodissociation from [Ru(bpy)(4AP)4]2+: a spectroscopic and computational study. Inorg Chem 2010; 48:1469-81. [PMID: 19149466 DOI: 10.1021/ic8015436] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The new complex [Ru(bpy)(4AP)(4)](2+) (1), where bpy = 2,2'-bipyridine and 4AP = 4-aminopyridine, undergoes selective photodissociation of two 4APs upon light excitation of the metal-ligand-to-ligand charge-transfer (MLLCT) band at 510 nm. The photoproducts of the reaction are mer-[Ru(bpy)(4AP)(3)(H(2)O)](2+) (2a) and trans-(4AP)[Ru(bpy)(4AP)(2)(H(2)O)(2)](2+) (3a). Photodissociation occurs in two consecutive steps with quantum yields of phi(1) = (6.1 +/- 1.0) x 10(-3) and phi(2) = (1.7 +/- 0.1) x 10(-4), respectively. Complex 1 was characterized by combined spectroscopic and theoretical techniques. EXAFS experiments at the Ru K-edge (22 117 eV) of 1 in an aqueous solution gave a Ru-N distance of 2.09 +/- 0.01 A. Photoproducts were characterized by electronic spectroscopy, 1D and 2D NMR, and mass spectrometry. Singlet and triplet excited states of 1 were studied by density functional theory (DFT) and time-dependent DFT for characterizing the optical properties of the complex. In the singlet state, (1)MC (metal-centered) dissociative states lie 0.65 eV above the main (1)MLLCT transition in the visible region of the UV-vis absorption spectrum. In the triplet state, the energy difference between these states is not reduced. However, potential energy curves of singlet and triplet excited states of 1 along the Ru-N(axial 4AP) and Ru-N(equatorial 4AP) stretching coordinates show that the release of the first 4AP may occur from the triplet state by mixing of (3)MLLCT and (3)MC dissociative states. This mixing is favored when the Ru-N(equatorial 4AP) bond is elongated, explaining the formation of the photoproduct 2a.
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Affiliation(s)
- Luca Salassa
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry CV4 7AL, United Kingdom
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35
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Dreuw A, Plötner J, Wormit M, Head-Gordon M, Dutoi AD. An Additive Long-range Potential to Correct for the Charge-transfer Failure of Time-dependent Density Functional Theory. ACTA ACUST UNITED AC 2010. [DOI: 10.1524/zpch.2010.6107] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
Time-dependent density functional theory is one of the most widely used methods for the calculation of excited states of large molecules. However, it exhibits substantial problems with charge-transfer excited states when conventional exchange-correlation functionals are employed. Here, we introduce an additive long-range potential that can, in principle, be directly employed with any existing local, GGA or hybrid-functional, without re-fitting of the original functionals. The additive potential shifts the excitation energies to higher values and corrects for the wrong asymptotic behavior of their potential energy surfaces with respect to charge-separating coordinates. First examples of its successful application are shown.
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Affiliation(s)
| | | | | | | | - Anthony Dean Dutoi
- Ruprecht Karls-University Heidelberg, Institute of Physical and Theoretical Chemistry,, Heidelberg, Deutschland
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36
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Min CG, Ren AM, Guo JF, Li ZW, Zou LY, Goddard JD, Feng JK. A Time-Dependent Density Functional Theory Investigation on the Origin of Red Chemiluminescence. Chemphyschem 2010; 11:251-9. [DOI: 10.1002/cphc.200900607] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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37
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Zhang F, Ai YJ, Luo Y, Fang WH. Nonadiabatic Histidine Dissociation of Hexacoordinate Heme in Neuroglobin Protein. J Phys Chem A 2010; 114:1980-4. [DOI: 10.1021/jp909887d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Feng Zhang
- Theoretical Chemistry, School of Biotechnology, Royal Institute of Technology, S-10691 Stockholm, Sweden, and College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Yue-Jie Ai
- Theoretical Chemistry, School of Biotechnology, Royal Institute of Technology, S-10691 Stockholm, Sweden, and College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Yi Luo
- Theoretical Chemistry, School of Biotechnology, Royal Institute of Technology, S-10691 Stockholm, Sweden, and College of Chemistry, Beijing Normal University, Beijing 100875, China
| | - Wei-Hai Fang
- Theoretical Chemistry, School of Biotechnology, Royal Institute of Technology, S-10691 Stockholm, Sweden, and College of Chemistry, Beijing Normal University, Beijing 100875, China
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Ha-Thi MH, Shafizadeh N, Poisson L, Soep B. First observation in the gas phase of the ultrafast electronic relaxation pathways of the S2 states of heme and hemin. Phys Chem Chem Phys 2010; 12:14985-93. [DOI: 10.1039/c0cp00687d] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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39
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Lodowski P, Jaworska M, Andruniów T, Kumar M, Kozlowski PM. Photodissociation of Co−C Bond in Methyl- and Ethylcobalamin: An Insight from TD-DFT Calculations. J Phys Chem B 2009; 113:6898-909. [DOI: 10.1021/jp810223h] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Piotr Lodowski
- Department of Theoretical Chemistry, Institute of Chemistry, University of Silesia, Szkolna 9, PL-40 006 Katowice, Poland; Institute of Physical and Theoretical Chemistry, Department of Chemistry, Wroclaw University of Technology, 50-370 Wroclaw, Poland; and Department of Chemistry, University of Louisville, Louisville, Kentucky 40292
| | - Maria Jaworska
- Department of Theoretical Chemistry, Institute of Chemistry, University of Silesia, Szkolna 9, PL-40 006 Katowice, Poland; Institute of Physical and Theoretical Chemistry, Department of Chemistry, Wroclaw University of Technology, 50-370 Wroclaw, Poland; and Department of Chemistry, University of Louisville, Louisville, Kentucky 40292
| | - Tadeusz Andruniów
- Department of Theoretical Chemistry, Institute of Chemistry, University of Silesia, Szkolna 9, PL-40 006 Katowice, Poland; Institute of Physical and Theoretical Chemistry, Department of Chemistry, Wroclaw University of Technology, 50-370 Wroclaw, Poland; and Department of Chemistry, University of Louisville, Louisville, Kentucky 40292
| | - Manoj Kumar
- Department of Theoretical Chemistry, Institute of Chemistry, University of Silesia, Szkolna 9, PL-40 006 Katowice, Poland; Institute of Physical and Theoretical Chemistry, Department of Chemistry, Wroclaw University of Technology, 50-370 Wroclaw, Poland; and Department of Chemistry, University of Louisville, Louisville, Kentucky 40292
| | - Pawel M. Kozlowski
- Department of Theoretical Chemistry, Institute of Chemistry, University of Silesia, Szkolna 9, PL-40 006 Katowice, Poland; Institute of Physical and Theoretical Chemistry, Department of Chemistry, Wroclaw University of Technology, 50-370 Wroclaw, Poland; and Department of Chemistry, University of Louisville, Louisville, Kentucky 40292
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40
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Miao TF, Liao SY, Qian L, Zheng KC, Ji LN. Electronic structures, DNA-binding and spectral properties of Co(III) complexes [Co(bpy)2(L)]3+ (L=pip, odhip, hnoip). Biophys Chem 2009; 140:1-8. [DOI: 10.1016/j.bpc.2008.11.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2008] [Revised: 10/24/2008] [Accepted: 11/05/2008] [Indexed: 10/21/2022]
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41
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Local Control Theory: Recent Applications to Energy and Particle Transfer Processes in Molecules. ADVANCES IN CHEMICAL PHYSICS 2009. [DOI: 10.1002/9780470431917.ch2] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/04/2023]
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42
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Ishizaka S, Wada T, Kitamura N. Femtosecond transient absorption study on relaxation intermediates in oxymyoglobin. Photochem Photobiol Sci 2009; 8:562-6. [DOI: 10.1039/b814170c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Li J, Ai YJ, Xie ZZ, Fang WH. How CO Binds to Hexacoordinated Heme in Neuroglobin Protein. J Phys Chem B 2008; 112:8715-23. [DOI: 10.1021/jp711919f] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Juan Li
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Yue-Jie Ai
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Zhi-Zhong Xie
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
| | - Wei-Hai Fang
- College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China
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Fink RF, Pfister J, Zhao HM, Engels B. Assessment of quantum chemical methods and basis sets for excitation energy transfer. Chem Phys 2008. [DOI: 10.1016/j.chemphys.2008.03.014] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Galano A, Rodriguez-Gattorno G, Torres-García E. A combined theoretical–experimental study on the acidity of WOx-ZrO2 systems. Phys Chem Chem Phys 2008; 10:4181-8. [DOI: 10.1039/b802934b] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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REN AM, GUO JF, FENG JK, ZOU LY, LI ZW, GODDARD JD. TDDFT Study of the Electronic Structure, Absorption and Emission Spectra of the Light Emitters of the Amazing Firefly Bioluminescence and Solvation Effects on the Spectra. CHINESE J CHEM 2008. [DOI: 10.1002/cjoc.200890038] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Ab initio configuration interaction description of excitation energy transfer between closely packed molecules. Chem Phys 2008. [DOI: 10.1016/j.chemphys.2007.08.021] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Vlček A, Záliš S. Modeling of charge-transfer transitions and excited states in d6 transition metal complexes by DFT techniques. Coord Chem Rev 2007. [DOI: 10.1016/j.ccr.2006.05.021] [Citation(s) in RCA: 384] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Li J, Chen JC, Xu LC, Zheng KC, Ji LN. A DFT/TDDFT study on the structures, trend in DNA-binding and spectral properties of molecular “light switch” complexes [Ru(phen)2(L)]2+(L=dppz, taptp, phehat). J Organomet Chem 2007. [DOI: 10.1016/j.jorganchem.2006.10.029] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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