Literature DB >> 34104983

Photoinduced phenomena in water solution of melamine explaining the photostability of the compound.

Vassil B Delchev1.   

Abstract

Two tautomers of melamine (triamino and imino-diamino) were studied at the BLYP/aug-cc-pVDZ theoretical level. It was found that the two tautomers are bridged with the 1πσ* excited-state reaction path. The high photostability of melamine in water solution was explained with the mechanism of ring deformation which occurs along the 1ππ* excited-state reaction path. The two mechanisms are investigated at the TD BLYP level of theory using the linear interpolation in internal coordinates approach.

Entities:  

Keywords:  Conical intersections S0/S1; Excited states; Melamine; TD DFT calculations; UV absorption spectra

Year:  2021        PMID: 34104983     DOI: 10.1007/s00894-021-04809-x

Source DB:  PubMed          Journal:  J Mol Model        ISSN: 0948-5023            Impact factor:   1.810


  18 in total

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Authors:  C S Cockell; G Horneck
Journal:  Photochem Photobiol       Date:  2001-04       Impact factor: 3.421

2.  TDDFT investigation on nucleic acid bases: comparison with experiments and standard approach.

Authors:  M K Shukla; Jerzy Leszczynski
Journal:  J Comput Chem       Date:  2004-04-15       Impact factor: 3.376

3.  Comparison of the non-radiative decay mechanisms of 4-pyrimidinone and uracil: an ab initio study.

Authors:  Vassil B Delchev; Andrzej L Sobolewski; Wolfgang Domcke
Journal:  Phys Chem Chem Phys       Date:  2010-05-21       Impact factor: 3.676

4.  Photochemistry of ethylene: a multireference configuration interaction investigation of the excited-state energy surfaces.

Authors:  M Barbatti; J Paier; H Lischka
Journal:  J Chem Phys       Date:  2004-12-15       Impact factor: 3.488

5.  Triplet-state formation along the ultrafast decay of excited singlet cytosine.

Authors:  Manuela Merchán; Luis Serrano-Andrés; Michael A Robb; Lluís Blancafort
Journal:  J Am Chem Soc       Date:  2005-02-16       Impact factor: 15.419

6.  Three-state conical intersections in nucleic acid bases.

Authors:  Spiridoula Matsika
Journal:  J Phys Chem A       Date:  2005-08-25       Impact factor: 2.781

7.  Photophysics and deactivation pathways of thymine.

Authors:  Gunther Zechmann; Mario Barbatti
Journal:  J Phys Chem A       Date:  2008-08-15       Impact factor: 2.781

8.  Ultrafast and radiationless electronic excited state decay of uracil and thymine cations: computing the effects of dynamic electron correlation.

Authors:  Javier Segarra-Martí; Thierry Tran; Michael J Bearpark
Journal:  Phys Chem Chem Phys       Date:  2019-01-30       Impact factor: 3.676

9.  Synthesis of pyrimidines and triazines in ice: implications for the prebiotic chemistry of nucleobases.

Authors:  César Menor-Salván; Dra Marta Ruiz-Bermejo; Marcelo I Guzmán; Susana Osuna-Esteban; Sabino Veintemillas-Verdaguer
Journal:  Chemistry       Date:  2009       Impact factor: 5.236

10.  Molecular basis of DNA photodimerization: intrinsic production of cyclobutane cytosine dimers.

Authors:  Daniel Roca-Sanjuán; Gloria Olaso-González; Israel González-Ramírez; Luis Serrano-Andrés; Manuela Merchán
Journal:  J Am Chem Soc       Date:  2008-07-16       Impact factor: 15.419

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