Electrons, excitons and hydrogen bonding: electron-promoted desorption from molecular ice surfaces

被引：9

作者：

Marchione, Demian ^{[1
,2
]}

McCoustra, Martin R. S. ^{[1
]}

机构：

[1] Heriot Watt Univ, Inst Chem Sci, Edinburgh EH14 4AS, Midlothian, Scotland

[2] CALTECH, Jet Prop Lab, Div Sci, 4800 Oak Grove Dr, Pasadena, CA 91109 USA

来源：

PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2016年 / 18卷 / 43期

关键词：

GAUSSIAN-BASIS SETS; WATER ICE; INDUCED AMORPHIZATION; LY-ALPHA; ENERGY; METHANOL; INTERSTELLAR; RADIATION; BENZENE; CHEMISTRY;

D O I：

10.1039/c6cp05814k

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Desorption of benzene (C6H6) from thick methanol (CH3OH) and diethyl ether (CH3CH2OCH2CH3) ices during irradiation with 250 eV electrons is reported and compared with our previous work on C6H6 desorption from water (H2O) ice systems. C6H6 electron-promoted desorption (EPD) is seen to be sensitive to the chemical nature of the substrate reflecting both the importance of the excitations localised around the O-atom versus those involving the C-atom; and the role of hydrogen bonding interactions in transporting non-dissociative electronic excitation to the substrate/C6H6 interfaces during the electron irradiation.

引用

页码：29747 / 29755

页数：9

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