Literature DB >> 21796297

Electron transfer-induced fragmentation of thymine and uracil in atom-molecule collisions.

D Almeida1, R Antunes, G Martins, S Eden, F Ferreira da Silva, Y Nunes, G Garcia, P Limão-Vieira.   

Abstract

Ion-pair formation has been studied in hyperthermal (30-100 eV) neutral potassium collisions with gas phase thymine (C(5)H(6)N(2)O(2)) and uracil (C(4)H(4)N(2)O(2)). Negative ions formed by electron transfer from the alkali atom to the target molecule were analysed by time-of-flight (TOF) mass spectrometry. The most abundant product anions are assigned to CNO(-) and (U-H)(-)/(T-H)(-) and the associated electron transfer mechanisms are discussed. Special emphasis is given to the enhancement of ring breaking pathways in the present experiments, notably CNO(-) formation, compared with free electron attachment measurements. This journal is © the Owner Societies 2011

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Year:  2011        PMID： 21796297     DOI： 10.1039/c1cp21340g

Source DB:  PubMed          Journal:  Phys Chem Chem Phys        ISSN： 1463-9076            Impact factor:   3.676


  8 in total

1.  Do the fragments from decomposed ZIF-8 greatly affect some of the intramolecular proton-transfer of thymine? A quantum chemical study.

Authors:  Dejie Li; Ying Han; Huijuan Li; Ping Zhang; Qi Kang; Dazhong Shen
Journal:  RSC Adv       Date:  2018-07-31       Impact factor: 4.036

2.  NCO(-), a key fragment upon dissociative electron attachment and electron transfer to pyrimidine bases: site selectivity for a slow decay process.

Authors:  Filipe Ferreira da Silva; Carolina Matias; Diogo Almeida; Gustavo García; Oddur Ingólfsson; Helga Dögg Flosadóttir; Benedikt Ómarsson; Sylwia Ptasinska; Benjamin Puschnigg; Paul Scheier; Paulo Limão-Vieira; Stephan Denifl
Journal:  J Am Soc Mass Spectrom       Date:  2013-09-17       Impact factor: 3.109

3.  More than charged base loss--revisiting the fragmentation of highly charged oligonucleotides.

Authors:  Adrien Nyakas; Rahel P Eberle; Silvan R Stucki; Stefan Schürch
Journal:  J Am Soc Mass Spectrom       Date:  2014-05-07       Impact factor: 3.109

4.  Electron Transfer Induced Decomposition in Potassium-Nitroimidazoles Collisions: An Experimental and Theoretical Work.

Authors:  Mónica Mendes; Gustavo García; Marie-Christine Bacchus-Montabonel; Paulo Limão-Vieira
Journal:  Int J Mol Sci       Date:  2019-12-06       Impact factor: 5.923

5.  Bound Electron Enhanced Radiosensitisation of Nimorazole upon Charge Transfer.

Authors:  Sarvesh Kumar; Islem Ben Chouikha; Boutheïna Kerkeni; Gustavo García; Paulo Limão-Vieira
Journal:  Molecules       Date:  2022-06-28       Impact factor: 4.927

6.  Sensing the ortho Positions in C6Cl6 and C6H4Cl2 from Cl2- Formation upon Molecular Reduction.

Authors:  Sarvesh Kumar; José Romero; Michael Probst; Thana Maihom; Gustavo García; Paulo Limão-Vieira
Journal:  Molecules       Date:  2022-07-27       Impact factor: 4.927

7.  Novel experimental setup for time-of-flight mass spectrometry ion detection in collisions of anionic species with neutral gas-phase molecular targets.

Authors:  J C Oller; L Ellis-Gibbings; F Ferreira da Silva; P Limão-Vieira; G García
Journal:  EPJ Tech Instrum       Date:  2015-08-21

8.  Ion-Pair Formation in Neutral Potassium-Neutral Pyrimidine Collisions: Electron Transfer Experiments.

Authors:  Mónica Mendes; Beatriz Pamplona; Sarvesh Kumar; Filipe Ferreira da Silva; Antonio Aguilar; Gustavo García; Marie-Christine Bacchus-Montabonel; Paulo Limao-Vieira
Journal:  Front Chem       Date:  2019-04-18       Impact factor: 5.221
  8 in total

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