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Lemos Silva RA, Barbosa MR, Martins CR, Scalabrini Machado DF, Ribeiro L, de Oliveira HCB, da Silva Filho DA. (Ro)vibrational Spectroscopic Constants, Lifetime and QTAIM Evaluation of Fullerene Dimers Stability. Molecules 2023; 28:5023. [PMID: 37446684 DOI: 10.3390/molecules28135023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 05/23/2023] [Accepted: 05/25/2023] [Indexed: 07/15/2023] Open
Abstract
The iconic caged shape of fullerenes gives rise to a series of unique chemical and physical properties; hence a deeper understanding of the attractive and repulsive forces between two buckyballs can bring detrimental information about the structural stability of such complexes, providing significant data applicable for several studies. The potential energy curves for the interaction of multiple van der Waals buckyball complexes with increasing mass were theoretically obtained within the DFT framework at ωB97xD/6-31G(d) compound model. These potential energy curves were employed to estimate the spectroscopic constants and the lifetime of the fullerene complexes with the Discrete Variable Representation and with the Dunham approaches. It was revealed that both methods are compatible in determining the rovibrational structure of the dimers and that they are genuinely stable, i.e., long-lived complexes. To further inquire into the nature of such interaction, Bader's QTAIM approach was applied. QTAIM descriptors indicate that the interactions of these closed-shell systems are dominated by weak van der Waals forces. This non-covalent interaction character was confirmed by the RDG analysis scheme. Indirectly, QTAIM also allowed us to confirm the stability of the non-covalent bonded fullerene dimers. Our lifetime calculations have shown that the studied dimers are stable for more than 1 ps, which increases accordingly with the number of carbon atoms.
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Affiliation(s)
- Rodrigo A Lemos Silva
- Instituto Federal de Educação, Ciência e Tecnologia de Goiás (IFG), Câmpus Jataí, Jataí 75804-714, GO, Brazil
- Grupo de Química Teórica e Estrutural de Anápolis (GQTEA), Campus Central Anápolis de Ciências Exatas e Tecnológicas Henrique Santillo, Universidade Estadual de Goiás, CP 459, Anápolis 75132-903, GO, Brazil
| | - Mateus R Barbosa
- Laboratório de Estrutura Eletrônica e Dinâmica Molecular (LEEDMOL), Instituto de Química, Universidade Federal de Goiás, CP 131, Goiânia 74001-970, GO, Brazil
| | - Caio R Martins
- Grupo de Química Teórica e Estrutural de Anápolis (GQTEA), Campus Central Anápolis de Ciências Exatas e Tecnológicas Henrique Santillo, Universidade Estadual de Goiás, CP 459, Anápolis 75132-903, GO, Brazil
| | - Daniel F Scalabrini Machado
- Laboratório de Modelagem Molecular de Sistemas Complexos (LMSC), Instituto de Química, Universidade de Brasília, CP 4478, Brasília 70919-970, DF, Brazil
| | - Luciano Ribeiro
- Grupo de Química Teórica e Estrutural de Anápolis (GQTEA), Campus Central Anápolis de Ciências Exatas e Tecnológicas Henrique Santillo, Universidade Estadual de Goiás, CP 459, Anápolis 75132-903, GO, Brazil
| | - Heibbe C B de Oliveira
- Laboratório de Estrutura Eletrônica e Dinâmica Molecular (LEEDMOL), Instituto de Química, Universidade Federal de Goiás, CP 131, Goiânia 74001-970, GO, Brazil
| | - Demétrio A da Silva Filho
- Grupo de Semicondutores Orgânicos, Instituto de Física, Campus Darcy Ribeiro, Universidade de Brasília, CP 4478, Brasília 70919-970, DF, Brazil
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2
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Petrović Ž, Šarić A, Despotović I, Katić J, Peter R, Petravić M, Ivanda M, Petković M. Surface Functionalisation of Dental Implants with a Composite Coating of Alendronate and Hydrolysed Collagen: DFT and EIS Studies. MATERIALS 2022; 15:ma15155127. [PMID: 35897560 PMCID: PMC9351680 DOI: 10.3390/ma15155127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 07/13/2022] [Accepted: 07/19/2022] [Indexed: 11/25/2022]
Abstract
The success of the osseointegration process depends on the surface characteristics and chemical composition of dental implants. Therefore, the titanium dental implant was functionalised with a composite coating of alendronate and hydrolysed collagen, which are molecules with a positive influence on the bone formation. The results of the quantum chemical calculations at the density functional theory level confirm a spontaneous formation of the composite coating on the titanium implant, ∆G*INT = −8.25 kcal mol−1. The combination of the results of X-ray photoelectron spectroscopy and quantum chemical calculations reveals the structure of the coating. The alendronate molecules dominate in the outer part, while collagen tripeptides prevail in the inner part of the coating. The electrochemical stability and resistivity of the implant modified with the composite coating in a contact with the saliva depend on the chemical nature of alendronate and collagen molecules, as well as their inter- and intramolecular interactions. The formed composite coating provides a 98% protection to the implant after the 7-day immersion in the artificial saliva. From an application point of view, the composite coating could effectively promote osseointegration and improve the implant’s resistivity in contact with an aggressive environment such as saliva.
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Affiliation(s)
- Željka Petrović
- Division of Materials Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10002 Zagreb, Croatia
- Correspondence: (Ž.P.); (A.Š.)
| | - Ankica Šarić
- Division of Materials Physics, Ruđer Bošković Institute, Bijenička cesta 54, 10002 Zagreb, Croatia;
- Centre of Excellence for Advanced Materials and Sensing Device, Ruđer Bošković Institute, Bijenička cesta 54, 10002 Zagreb, Croatia
- Correspondence: (Ž.P.); (A.Š.)
| | - Ines Despotović
- Division of Physical Chemistry, Ruđer Bošković Institute, Bijenička cesta 54, 10002 Zagreb, Croatia;
| | - Jozefina Katić
- Department of Electrochemistry, Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, 10000 Zagreb, Croatia;
| | - Robert Peter
- Faculty of Physics and Center for Micro- and Nanosciences and Technologies, University of Rijeka, R. Matejcic 2, 51000 Rijeka, Croatia; (R.P.); (M.P.)
| | - Mladen Petravić
- Faculty of Physics and Center for Micro- and Nanosciences and Technologies, University of Rijeka, R. Matejcic 2, 51000 Rijeka, Croatia; (R.P.); (M.P.)
| | - Mile Ivanda
- Division of Materials Physics, Ruđer Bošković Institute, Bijenička cesta 54, 10002 Zagreb, Croatia;
- Centre of Excellence for Advanced Materials and Sensing Device, Ruđer Bošković Institute, Bijenička cesta 54, 10002 Zagreb, Croatia
| | - Marin Petković
- Poliklinika Petković, Lašćinska cesta 97, 10000 Zagreb, Croatia;
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Lemos Silva RA, Scalabrini Machado DF, Nunes Rodrigues NM, de Oliveira HCB, Ribeiro L, da Silva Filho DA. Harnessing Greenhouse Gases Absorption by Doped Fullerenes with Externally Oriented Electric Field. Molecules 2022; 27:molecules27092968. [PMID: 35566318 PMCID: PMC9105219 DOI: 10.3390/molecules27092968] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Revised: 04/13/2022] [Accepted: 04/29/2022] [Indexed: 11/16/2022] Open
Abstract
In this work, a theoretical investigation of the effects caused by the doping of C20 with silicon (Si) atom as well as the adsorption of CO, CO2 and N2 gases to C20 and C19Si fullerenes was carried out. In concordance with previous studies, it was found that the choice of the doping site can control the structural, electronic, and energetic characteristics of the C19Si system. The ability of C20 and C19Si to adsorb CO, CO2 and N2 gas molecules was evaluated. In order to modulate the process of adsorption of these chemical species to C19Si, an externally oriented electric field was included in the theoretical calculations. It was observed that C19Si is highly selective with respect to CO adsorption. Upon the increase of the electric field intensity the adsorption energy was magnified correspondingly and that the interaction between CO and C19Si changes in nature from a physical adsorption to a partial covalent character interaction.
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Affiliation(s)
- Rodrigo A. Lemos Silva
- Institute of Physics, University of Brasília, Brasília 70919-970, Brazil
- Correspondence: (R.A.L.S.); (D.A.d.S.F.)
| | - Daniel F. Scalabrini Machado
- Laboratório de Modelagem de Sistemas Complexos (LMSC), Instituto de Química, Universidade de Brasília, Brasília 70919-970, Brazil;
| | - Núbia Maria Nunes Rodrigues
- Grupo de Química Teórica e Estrutural de Anápolis, Campus de Ciências Exatas de Anápolis, Universidade Estadual de Goiás, Anápolis 75132-903, Brazil; (N.M.N.R.); (L.R.)
| | - Heibbe C. B. de Oliveira
- Laboratório de Estrutura Eletrônica e Dinâmica Molecular (LEEDMOL), Instituto de Química, Universidade Federal de Goiás, Goiânia 74001-970, Brazil;
| | - Luciano Ribeiro
- Grupo de Química Teórica e Estrutural de Anápolis, Campus de Ciências Exatas de Anápolis, Universidade Estadual de Goiás, Anápolis 75132-903, Brazil; (N.M.N.R.); (L.R.)
| | - Demétrio A. da Silva Filho
- Institute of Physics, University of Brasília, Brasília 70919-970, Brazil
- Correspondence: (R.A.L.S.); (D.A.d.S.F.)
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4
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Jiang TL, Li WZ, Gao QF, Tan DF, Pang JY, Zhang SH. Syntheses, crystal structures and Hirshfeld surface analysis of (Z)-3-[(3-acetyl-2-hydroxyphenyl)amino]-2-bromoprop-2-enal and a novel ZnII complex. Acta Crystallogr C 2022; 78:123-130. [DOI: 10.1107/s2053229622000924] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Accepted: 01/26/2022] [Indexed: 11/10/2022] Open
Abstract
A novel zero-dimensional dinuclear zinc complex, di-μ-acetato-1:2κ4
O:O′-(μ-2-acetyl-6-{[(Z)-2-bromo-3-oxoprop-1-en-1-yl]azanidyl}phenolato-1κ2
O
1,O
2:2κ3
O
1,N,O
6)(N,N-dimethylacetamide-1κO)dizinc(II), [Zn2(C11H8BrNO3)(CH3COO)2(C4H9NO)] or [Zn2(L)(CH3COO)2(DMA)], 1, was synthesized using (Z)-3-[(3-acetyl-2-hydroxyphenyl)amino]-2-bromoprop-2-enal (H2
L), which was synthesized from 1-(3-amino-2-hydroxyphenyl)ethanone and 2-bromomalonaldehyde. H2
L and 1 were characterized by single-crystal X-ray diffraction, FT–IR spectroscopy and elemental analysis. Theoretical calculations of the bond orders and excited state of H2
L confirmed that there is extensive electron delocalization in the H2
L molecules. Single-crystal X-ray diffraction shows that the two Zn atoms are pentacoordinated in distorted trigonal bipyramidal configurations in the crystals of 1. The thermogravimetric analysis of 1 shows that the main frame of the complex remains stable to about 190 °C. Powder X-ray diffraction (PXRD) analysis shows that 1 possesses high purity and acid and alkali resistance. The intermolecular interactions of H2
L and 1 were analyzed using Hirshfeld surface analysis and the results indicate that the H...H and O...H interactions of H2
L and 1 play a considerable role in stabilizing the self-assembly process.
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5
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Qiao Y, Chen Y, Zhang S, Huang Q, Zhang Y, Li G. Six novel complexes based on 5-Acetoxy-1-(6-chloro-pyridin-2-yl)-1H-pyrazole-3-carboxylic acid methyl ester derivatives: Syntheses, crystal structures, and anti-cancer activity. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103237] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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6
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Katari M, Carmichael D, Jacquemin D, Frison G. Structure of Electronically Reduced N-Donor Bidentate Ligands and Their Heteroleptic Four-Coordinate Zinc Complexes: A Survey of Density Functional Theory Results. Inorg Chem 2019; 58:7169-7179. [PMID: 31117621 DOI: 10.1021/acs.inorgchem.8b03549] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The role of Hartree-Fock exchange in describing the structural changes occurring upon reduction of bipyridine-based ligands and their complexes is investigated within the framework of density functional theory (DFT) calculations. A set of four free ligands in their neutral and radical anionic forms, and two of their zinc complexes in their dicationic and monocationic radical forms, is used to compare a large panel of pure, conventional, and long-range corrected hybrid DFT functionals; coupled cluster single and double calculations are used alongside experimental results as benchmarks. Particular attention has been devoted to the magnitude of the change, upon reduction, of the Δ-parameter, which measures the difference between the Cpy-Cpy and the C-N bond lengths in bipyridine ligand and is known to experimentally correlate with the charge of the ligands. Our results indicate that the structural changes significantly depend on the amount of exact exchange included in the functional. A progressive evolution is observed for the free ligands, whereas two distinct sets of results are obtained for the complexes. Functionals with a small degree of HF exchange, e.g., B3LYP, do not adequately describe geometric changes for the considered species, and, quite surprisingly, the same holds for the CC2 method. The best agreement to experimental and CCSD values is obtained with functionals that include a significant but not excessive part of exact exchange, e.g., CAM-B3LYP, M06-2X, and ωB97X-D. The calculated localization of the added electron after reduction, which depends on the self-interaction error, is used to rationalize these outcomes. Static correlation is also shown to play a role in the accurate description of the electronic structure.
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Affiliation(s)
| | - Duncan Carmichael
- LCM, CNRS, Ecole Polytechnique , IP Paris , F-91128 Palaiseau , France
| | - Denis Jacquemin
- University of Nantes , CNRS, CEISAM (UMR 6230), 2 chemin de la Houssinière , 44322 Nantes , Cedex 03 , France
| | - Gilles Frison
- LCM, CNRS, Ecole Polytechnique , IP Paris , F-91128 Palaiseau , France
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7
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Solvothermal synthesis of zinc oxide nanoparticles: A combined experimental and theoretical study. J Mol Struct 2019. [DOI: 10.1016/j.molstruc.2018.10.025] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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8
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Lassoued MS, Abdelbaky MS, Ben Soltan W, Lassoued A, Ammar S, Gadri A, Ben Salah A, García-Granda S. Structure characterization, photoluminescence and dielectric properties of a new hybrid compound containing chlorate anions of zincate (II). J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.01.027] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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9
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El-Massaoudi M, Radi S, Salhi A, Mabkhot YN, Al-Showiman SS, Ghabbour HA, Adarsh NN, Garcia Y. Novel 1D coordination polymers built from acyclic cryptate containing bis(1 H-1,2,4-triazole) ligands and featuring coordinated counteranions. NEW J CHEM 2018. [DOI: 10.1039/c8nj00799c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Two new coordination polymers, namely, ZnL2(BF4)2 (1) and CuL2(NO3)2 (2) were constructed from a new flexible acyclic cryptate-bis(1H-1,2,4-triazole) ligand.
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Affiliation(s)
- Mohamed El-Massaoudi
- LCAE, Department of Chemistry
- Faculty of Science
- University Mohamed I
- Oujda 60 000
- Morocco
| | - Smaail Radi
- LCAE, Department of Chemistry
- Faculty of Science
- University Mohamed I
- Oujda 60 000
- Morocco
| | - Amin Salhi
- LC2AME
- Faculty of Science University Mohamed I
- Oujda 60 000
- Morocco
| | - Yahia N. Mabkhot
- Department of Chemistry
- Faculty of Science, King Saud University
- Riyadh 11451
- Saudi Arabia
| | - Salim S. Al-Showiman
- Department of Chemistry
- Faculty of Science, King Saud University
- Riyadh 11451
- Saudi Arabia
| | - Hazem A. Ghabbour
- Department of Pharmaceutical Chemistry
- College of Pharmacy
- King Saud University
- Riyadh 11451
- Saudi Arabia
| | - N. N. Adarsh
- Institute of Condensed Matter and Nanosciences
- Université Catholique de Louvain
- Place L. Pasteur 1
- 1348 Louvain-la-Neuve
- Belgium
| | - Yann Garcia
- Institute of Condensed Matter and Nanosciences
- Université Catholique de Louvain
- Place L. Pasteur 1
- 1348 Louvain-la-Neuve
- Belgium
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10
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Gusev AN, Shul’gin VF, Minaev BF, Baryshnikov GV, Minaeva VA, Baryshnikova AT, Kiskin MA, Eremenko IL. Synthesis and luminescent properties of copper(I) complexes with 3-pyridin-2-yl-5-(4-R-phenyl)-1H-1,2,4-triazoles. RUSS J INORG CHEM+ 2017. [DOI: 10.1134/s0036023617040052] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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11
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Molecular structure, experimental and theoretical spectroscopic characterization and non-linear optical properties studies of a new non-centrosymmetric hybrid material. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.06.031] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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12
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Anion-induced exchange interactions in binuclear complexes of Cu(II) with flexible hexadentate bispicolylamidrazone ligands. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.08.054] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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13
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Baryshnikova AT, Minaev BF, Baryshnikov GV, Sun WH. Quantum-chemical study of the structure and magnetic properties of mono- and binuclear Cu(II) complexes with 1,3-bis(3-(pyrimidin-2-yl)-1H-1,2,4-triazol-5-yl)propane. RUSS J INORG CHEM+ 2016. [DOI: 10.1134/s003602361605003x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Baryshnikova AT, Minaev BF, Baryshnikov GV, Sun WH. Structure and spectral and luminescence properties of the trinuclear zinc complex with (E)-5-((2,6-diethylphenylimino)methyl)-2-methylquinolin-8-ol: Experimental and DFT study. RUSS J INORG CHEM+ 2015. [DOI: 10.1134/s0036023615120050] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Karaush NN, Baryshnikov GV, Minaeva VA, Minaev BF. A DFT and QTAIM study of the novel d-block metal complexes with tetraoxa[8]circulene-based ligands. NEW J CHEM 2015. [DOI: 10.1039/c5nj01255d] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The transition metal complexes with the tetraoxa[8]circulene-based ligand are designed. The complexation process strictly depends on matching of the d-metal cation size to the size of the tetraoxa[8]circulene formed cavity.
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Affiliation(s)
| | | | | | - Boris F. Minaev
- Bohdan Khmelnytsky National University
- Cherkasy
- Ukraine
- Key Laboratory of Engineering Plastics and Beijing National Laboratory for Molecular Sciences
- Beijing 100190
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16
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Ding XH, Wang S, Li YH, Huang W. Tetrahedral oxyanions-assisted supramolecular assemblies of pyridine-based tectons into hydrogen-bonding networks. J Mol Struct 2015. [DOI: 10.1016/j.molstruc.2014.09.032] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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17
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Karaush NN, Baryshnikov GV, Minaev BF. Alkali and alkaline-earth metal complexes with tetraoxa[8]circulene sheet: a computational study by DFT and QTAIM methods. RSC Adv 2015. [DOI: 10.1039/c4ra13806f] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The optimized structure of the sandwich-type complexes [M(TOC)2]n+(M = K+, Ca2+).
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Affiliation(s)
| | | | - Boris F. Minaev
- Bohdan Khmelnytsky National University
- Cherkasy
- Ukraine
- Tomsk State University
- Tomsk
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18
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Gusev AN, Shul’gin VF, Beyjyyev E, Alexandrov GG, Eremenko IL, Linert W. Anion-triggered coordination mode of the new chelating ligand 1,3-bis[5-(2-pyrimidinyl)-1,2,4-triazol-3-yl]propane. Polyhedron 2015. [DOI: 10.1016/j.poly.2014.09.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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19
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Valiev RR, Telminov EN, Solodova TA, Ponyavina EN, Gadirov RM, Kaplunov MG, Kopylova TN. Theoretical and experimental investigation of photophysical properties of Zn(DFP SAMQ)2. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2014; 128:137-140. [PMID: 24662762 DOI: 10.1016/j.saa.2014.02.157] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2013] [Revised: 02/08/2014] [Accepted: 02/24/2014] [Indexed: 06/03/2023]
Abstract
Theoretical calculations and experimental measurements were carried out for the investigation of spectroscopic and photophysical properties of Zn(DFP SAMQ)2 complex. The rate constant of intersystem crossing and the radiative rate constant were calculated using ab initio method. The rate constant of the internal conversion was estimated using the received calculated values and the experimental fluorescence quantum yield. It was shown that the main mechanism for the deactivation of the excited electronic energy of the first singlet excited state is the process of internal conversion.
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Affiliation(s)
- R R Valiev
- Tomsk State University, 36 Lenin Avenue, Tomsk 634050, Russia; Tomsk Polytechnic University, 43a Lenin Avenue, Building 2, Tomsk 634050, Russia.
| | - E N Telminov
- Tomsk State University, 36 Lenin Avenue, Tomsk 634050, Russia
| | - T A Solodova
- Tomsk State University, 36 Lenin Avenue, Tomsk 634050, Russia
| | - E N Ponyavina
- Tomsk State University, 36 Lenin Avenue, Tomsk 634050, Russia
| | - R M Gadirov
- Tomsk State University, 36 Lenin Avenue, Tomsk 634050, Russia
| | - M G Kaplunov
- Institute of Problems of Chemical Physics, Russian Academy of Sciences, Chernogolovka, Moscow Region 142432, Russia
| | - T N Kopylova
- Tomsk State University, 36 Lenin Avenue, Tomsk 634050, Russia
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20
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Granifo J, Gaviño R, Freire E, Baggio R. A novel hybrid terpyridine–pyrimidine ligand and the supramolecular structures of two of its complexes with Zn(II) and acetylacetonato: The underlying role of non-covalent π⋯π contacts and C–H⋯X(O, N, π) hydrogen bonds. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.01.053] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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