The Interplay between ππ*/nπ* excited states in gas-phase thymine: A quantum dynamical study (295 views)
Chemphyschem (ISSN: 1439-4235, 1439-7641, 1439-7641electronic), 2011 Jul 11; 12(10): 1957-1968.
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Paper type: Journal Article,
Impact factor: 3.412, 5-year impact factor: 3.553
Url: http://www.scopus.com/inward/record.url?eid=2-s2.0-79959806506&partnerID=40&md5=7ccd848d33568dbfaa94717d2619a770
Keywords: Computational Chemistry, Excited States, Gas-Phase Reactions, Nucleobases, Population Transfer, Thymine, Article, Chemical Structure, Quantum Theory, Thermodynamics, Models, Molecular,
Affiliations:
*** IBB - CNR ***
CNR (Consiglio Nazionale Delle Ricerche), Istituto di Chimica Dei Composti, OrganoMetallici (ICCOM-CNR), UOS di Pisa, Area della Ricerca, via G. Moruzzi 1, I-56124 Pisa, Italy
Scuola Normale Superiore, Piazza dei Cavalieri, 7, I-56126 Pisa, Italy
References:
Not available.
Chemphyschem (ISSN: 1439-4235, 1439-7641, 1439-7641electronic), 2011 Jul 11; 12(10): 1957-1968.
Export to BibTeX Export to EndNote
Paper type: Journal Article,
Impact factor: 3.412, 5-year impact factor: 3.553
Url: http://www.scopus.com/inward/record.url?eid=2-s2.0-79959806506&partnerID=40&md5=7ccd848d33568dbfaa94717d2619a770
Keywords: Computational Chemistry, Excited States, Gas-Phase Reactions, Nucleobases, Population Transfer, Thymine, Article, Chemical Structure, Quantum Theory, Thermodynamics, Models, Molecular,
Affiliations:
*** IBB - CNR ***
CNR (Consiglio Nazionale Delle Ricerche), Istituto di Chimica Dei Composti, OrganoMetallici (ICCOM-CNR), UOS di Pisa, Area della Ricerca, via G. Moruzzi 1, I-56124 Pisa, Italy
Scuola Normale Superiore, Piazza dei Cavalieri, 7, I-56126 Pisa, Italy
References:
Not available.
The Interplay between ππ*/nπ* excited states in gas-phase thymine: A quantum dynamical study
A quantum mechanical study of the interplay between the bright ππ* (Sπ) and the dark nπ* (Sn) excited states of thymine in the gas phase is reported. TD-PBE0 calculations indicate that within a relevant region of the Sπ surface, connecting the Franck-Condon point with the planar and non-planar S π plateau, Sπ and Sn are almost isoenergetic and that a Sπ→Sn population transfer is therefore likely. This latter process has been studied by two complementary quantum dynamical approaches, a three-dimensional anharmonic (quartic) model, and a full-dimensional harmonic linear vibronic coupling model. Although providing slightly different quantitative indications, both approaches predict a very fast and effective Sπ→Sn population transfer: already at 50 fs the Sn state is significantly populated (20-40 %) and this population persists or even increases on a longer time scale. Walking the line: A quantum mechanical study of the interplay between the bright ππ* (Sπ) and the dark nπ* (Sn) excited states of thymine (see picture) in the gas phase is reported. The process is studied by two complementary quantum dynamical approaches, a three-dimensional anharmonic (quartic) model, and a full-dimensional harmonic linear vibronic coupling model. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
A quantum mechanical study of the interplay between the bright ππ* (Sπ) and the dark nπ* (Sn) excited states of thymine in the gas phase is reported. TD-PBE0 calculations indicate that within a relevant region of the Sπ surface, connecting the Franck-Condon point with the planar and non-planar S π plateau, Sπ and Sn are almost isoenergetic and that a Sπ→Sn population transfer is therefore likely. This latter process has been studied by two complementary quantum dynamical approaches, a three-dimensional anharmonic (quartic) model, and a full-dimensional harmonic linear vibronic coupling model. Although providing slightly different quantitative indications, both approaches predict a very fast and effective Sπ→Sn population transfer: already at 50 fs the Sn state is significantly populated (20-40 %) and this population persists or even increases on a longer time scale. Walking the line: A quantum mechanical study of the interplay between the bright ππ* (Sπ) and the dark nπ* (Sn) excited states of thymine (see picture) in the gas phase is reported. The process is studied by two complementary quantum dynamical approaches, a three-dimensional anharmonic (quartic) model, and a full-dimensional harmonic linear vibronic coupling model. Copyright © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
The Interplay between ππ*/nπ* excited states in gas-phase thymine: A quantum dynamical study
The Interplay between ππ*/nπ* excited states in gas-phase thymine: A quantum dynamical study
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Muñoz-Losa A, Markovitsi D, Improta R
* A State-Specific PCM-DFT method to include dynamic solvent effects in the calculation of ionization energies: Application to DNA bases (246 views)
Chem Phys Lett (ISSN: 0009-2614), 2015; 634: 20-24.
Impact Factor: 1.86
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Improta R, Barone V
* Excited States behavior of nucleobases in solution: insights from computational studies (212 views)
Top Curr Chem (ISSN: 0340-1022), 2015; 355: 329-357.
Impact Factor: 4.014
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Zhang Y, Dood J, Beckstead AA, Li X-B, Nguyen KV, Burrows CJ, Improta R, Kohler B
* Photoinduced Electron Transfer in DNA: Charge Shift Dynamics between 8-Oxo-Guanine Anion and Adenine (943 views)
J Phys Chem B (ISSN: 1520-6106, 1520-5207, 1520-5207linking), 2015; 119(24): 7491-7502.
Impact Factor: 3.187
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Changenet-Barret P, Gustavsson T, Improta R, Markovitsi D
* Ultrafast Excited-State Deactivation of 8-Hydroxy-2′-deoxyguanosine Studied by Femtosecond Fluorescence Spectroscopy and Quantum-Chemical Calculations (539 views)
J Phys Chem A (ISSN: 1089-5639, 1520-5215electronic, 1089-5639linking), 2015; 119(23): 6131-6139.
Impact Factor: 2.883
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Improta R, Ferrer FJ, Stendardo E, Santoro F
* Quantum-classical calculation of the absorption and emission spectral shapes of oligothiophenes at low and room temperature by first-principle calculations (266 views)
Chemphyschem (ISSN: 1439-4235, 1439-7641, 1439-4235linking), 2014 Oct 20; 15(15): 3320-3333.
Impact Factor: 3.419
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Improta R
* Quantum mechanical calculations unveil the structure and properties of the absorbing and emitting excited electronic states of guanine quadruplex (583 views)
Chemistry (ISSN: 0947-6539, 1521-3765, 1521-3765electronic), 2014 Jun 23; 20(26): 8106-8115.
Impact Factor: 5.731
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Santoro F, Improta R, Fahleson T, Kauczor J, Norman P, Coriani S
* Relative stability of the La and Lb excited states in adenine and guanine: Direct evidence from TD-DFT calculations of MCD spectra (296 views)
J Phys Chem Lett (ISSN: 1948-7185, 1948-7185electronic, 1948-7185linking), 2014 Jun 5; 5(11): 1806-1811.
Impact Factor: 7.458
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Banyasz A, Gustavsson T, Onidas D, Changenet-Barret P, Markovitsi D, Improta R
* Multi-pathway excited state relaxation of adenine oligomers in aqueous solution: A joint theoretical and experimental study (315 views)
Chemistry (ISSN: 0947-6539, 1521-3765, 1521-3765electronic), 2013 Mar; 19(11): 3762-3774.
Impact Factor: 5.696
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Banyasz A, Douki T, Improta R, Gustavsson T, Onidas D, Vaya I, Perron M, Markovitsi D
* Electronic excited states responsible for dimer formation upon UV absorption directly by thymine strands: Joint experimental and theoretical study (364 views)
J Am Chem Soc (ISSN: 0002-7863, 0002-2786, 1520-5126), 2012 Sep 12; 134(36): 14834-14845.
Impact Factor: 10.677
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Hua Y, Changenet-Barret P, Improta R, Vaya I, Gustavsson T, Kotlyar AB, Zikich D, Sket P, Plavec J, Markovitsi D
* Cation effect on the electronic excited states of guanine nanostructures studied by time-resolved fluorescence spectroscopy (420 views)
J Phys Chem C (ISSN: 1932-7447), 2012 Jul 12; 116(27): 14682-14689.
Impact Factor: 4.814
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Gustavsson T, Improta R, Banyasz A, Vaya I, Markovitsi D
* The effect of methylation on the excited state dynamics of aminouracils (313 views)
J Photochem Photobiol A Chem (ISSN: 1010-6030), 2012 Apr 15; 234: 37-43.
Impact Factor: 2.416
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Biemann L, Kovalenko SA, Kleinermanns K, Mahrwald R, Markert M, Improta R
* Excited state proton transfer is not involved in the ultrafast deactivation of Guanine-cytosine pair in solution (375 views)
J Am Chem Soc (ISSN: 0002-7863, 0002-2786, 1520-5126), 2011 Dec 14; 133(49): 19664-19667.
Impact Factor: 9.907
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Improta R, Barone V
* Interplay between "neutral" and "charge-transfer" excimers rules the excited state decay in adenine-rich polynucleotides (633 views)
Angew Chem Int Ed (ISSN: 1433-7851, 1521-3773electronic, 1433-7851linking), 2011 Dec 9; 50(50): 12016-12019.
Impact Factor: 13.455
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Banyasz A, Karpati S, Mercier Y, Reguero M, Gustavsson T, Markovitsi D, Improta R
* The peculiar spectral properties of amino-substituted uracils: A combined theoretical and experimental study (367 views)
J Phys Chem B (ISSN: 1520-6106, 1520-5207, 1520-5207electronic), 2010 Oct 7; 114(39): 12708-12719.
Impact Factor: 3.603
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Changenet-Barret P, Emanuele E, Gustavsson T, Improta R, Kotlyar AB, Markovitsi D, Vaya I, Zakrzewska K, Zikich D
* Optical properties of guanine nanowires: Experimental and theoretical study (280 views)
J Phys Chem C (ISSN: 1932-7447), 2010 Sep 2; 114(34): 14339-14346.
Impact Factor: 4.524
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Gustavsson T, Improta R, Markovitsi D
DNA/RNA: Building blocks of life under UV irradiation (260 views)
J Phys Chem Lett (ISSN: 1948-7185, 1948-7185electronic, 1948-7185linking), 2010 Jul 1; 1(13): 2025-2030.
Impact Factor: 6.687
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Improta R, Santoro F, Barone V, Lami A
* Vibronic model for the quantum dynamical study of the competition between bright and charge-transfer excited states in single-strand polynucleotides: the adenine dimer case (271 views)
J Phys Chem A (ISSN: 1089-5639, 1520-5215electronic, 1089-5639linking), 2009 Dec 31; 113(52): 15346-15354.
Impact Factor: 2.899
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Improta R, Barone V
* PCM/TD-DFT study of the two lowest excited states of uracil derivatives in solution: The effect of the functional and of the cavity model (224 views)
J Mol Struct Theochem (ISSN: 0166-1280), 2009 Nov 30; 914(1-3): 87-93.
Impact Factor: 1.216
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Improta R, Barone V, Lami A, Santoro F
* Quantum dynamics of the ultrafast ππ*/nπ* population transfer in uracil and 5-fluoro-uracil in water and acetonitrile (289 views)
J Phys Chem B (ISSN: 1520-6106, 1520-5207, 1520-5207electronic), 2009 Oct 29; 113(43): 14491-14503.
Impact Factor: 3.471
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Karunakaran V, Kleinermanns K, Improta R, Kovalenko SA
* Photoinduced dynamics of guanosine monophosphate in water from broad-band transient absorption spectroscopy and quantum-chemical calculations (278 views)
J Am Chem Soc (ISSN: 0002-7863, 0002-2786, 1520-5126), 2009; 131(16): 5839-5850.
Impact Factor: 8.58
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Santoro F, Barone V, Improta R
* The Excited States Decay Of The A-T Dna: A Pcm/Td-Dft Study In Aqueous Solution Of The (9-Methyl-Adenine) 2 (1-Methyl-Thymine) 2 Stacked Tetramer (242 views)
J Am Chem Soc (ISSN: 0002-7863, 0002-2786, 1520-5126), 2009; 131(42): 15232-15245.
Impact Factor: 8.58
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Mercier Y, Santoro F, Reguero M, Improta R
* The decay from the dark nπ* excited state in uracil: An integrated CASPT2/CASSCF and PCM/TD-DFT study in the gas phase and in water (343 views)
J Phys Chem B (ISSN: 1520-6106, 1520-5207, 1520-5207electronic), 2008 Sep 4; 112(35): 10769-10772.
Impact Factor: 4.189
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Improta R, Barone V
The excited states of adenine and thymine nucleoside and nucleotide in aqueous solution: A comparative study by time-dependent DFT calculations (216 views)
Theor Chem Acc (ISSN: 1432-881x), 2008 Jul; 120(4-6): 491-497.
Impact Factor: 2.37
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Gustavsson T, Bányász A, Sarkar N, Markovitsi D, Improta R
* Assessing solvent effects on the singlet excited state lifetime of uracil derivatives: A femtosecond fluorescence upconversion study in alcohols and D2O (288 views)
Chem Phys (ISSN: 0301-0104), 2008 Jun 23; 350(1-3): 186-192.
Impact Factor: 1.961
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Gustavsson T, Banyasz A, Sarkar N, Markovitsi D, Improta R
* Statin: New life for an old drug (368 views)
Pharmacol Res Academic Press, 2008 Jun 23; 350(1-3): 1-2.
Impact Factor: 3.976
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Santoro F, Barone V, Improta R
* Can TD-DFT calculations accurately describe the excited states behavior of stacked nucleobases? The cytosine dimer as a test case (295 views)
J Comput Chem (ISSN: 0192-8651, 1096-987xelectronic, 0192-8651linking), 2008 Apr 30; 29(6): 957-964.
Impact Factor: 3.39
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Improta R
The Excited States Of Pi-Stacked 9-Methyl Adenine Oligomers: A Td-Dft Study In Aqueous Solution (179 views)
Physical Chemistry Chemical Physics, 2008; 10: 2656-2664.
Impact Factor: 2.028
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Santoro F, Barone V, Benzi C, Improta R
* Excited state properties of sizable molecules in solution: From structure to reactivity (271 views)
Theor Chem Acc (ISSN: 1432-881x), 2007 May; 117(5-6): 1073-1084.
Impact Factor: 2.537
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Santoro F, Gustavsson T, Lami S, Barone V, Improta R
* Towards the understanding of the excited state dynamics of nucleic acids: Solvent and stacking effect on the photophysical behavior of nucleobases (229 views)
Aip Conf Proc (ISSN: 0094-243x), 2007; 963(2): 631-634.
Impact Factor: 0
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Santoro F, Barone V, Gustavsson T, Improta R
* Solvent effect on the singlet excited-state lifetimes of nucleic acid bases: A computational study of 5-fluorouracil and uracil in acetonitrile and water (866 views)
J Am Chem Soc (ISSN: 0002-7863, 0002-2786, 1520-5126), 2006 Dec 20; 128(50): 16312-16322.
Impact Factor: 7.696
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45 Records (45 excluding Abstracts).
Total impact factor: 268.4 (268.4 excluding Abstracts).
Total 5 year impact factor: 279.982 (279.982 excluding Abstracts).
Total impact factor: 268.4 (268.4 excluding Abstracts).
Total 5 year impact factor: 279.982 (279.982 excluding Abstracts).
295 views. Last view on Friday 04 August 2023, 17:05:24
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