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

S. Eden; FF da Silva; Yuri Fonseca da Silva Nunes; Gustavo García; Paulo Manuel Assis Loureiro Limão-vieira

doi:10.1039/c1cp21340g

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

S. Eden, FF da Silva, Yuri Fonseca da Silva Nunes, Gustavo García, Paulo Manuel Assis Loureiro Limão-vieira

DF – Departamento de Física

Research output: Contribution to journal › Article › peer-review

31 Citations (Scopus)

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.

Original language	English
Pages (from-to)	15657-15665
Journal	Physical Chemistry Chemical Physics
Volume	13
Issue number	34
DOIs	https://doi.org/10.1039/c1cp21340g
Publication status	Published - 14 Sept 2011

Keywords

thymine
potassium
uracil

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10.1039/c1cp21340g

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title = "Electron transfer-induced fragmentation of thymine and uracil in atom-molecule collisions",

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.",

keywords = "thymine, potassium, uracil",

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T1 - Electron transfer-induced fragmentation of thymine and uracil in atom-molecule collisions

AU - Eden, S.

AU - da Silva, FF

AU - Nunes, Yuri Fonseca da Silva

AU - García, Gustavo

AU - Limão-vieira, Paulo Manuel Assis Loureiro

PY - 2011/9/14

Y1 - 2011/9/14

N2 - 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.

AB - 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.

KW - thymine

KW - potassium

KW - uracil

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U2 - 10.1039/c1cp21340g

DO - 10.1039/c1cp21340g

M3 - Article

SN - 1463-9076

VL - 13

SP - 15657

EP - 15665

JO - Physical Chemistry Chemical Physics

JF - Physical Chemistry Chemical Physics

IS - 34

ER -

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

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