Photoionization mass spectrometry of molecular clusters using synchrotron radiation
Photoionization mass spectrometry of molecular clusters using synchrotron radiation
复制标题
使用同步加速器辐射进行分子簇光电离质谱分析
DOI：
10.1007/bf01436927
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发表时间：
1987
期刊：
影响因子：
--
通讯作者：
H. Baumgärtel
中科院分区：
文献类型：
--
作者：
B. Brutschy;P. Bisling;E. Rühl;H. Baumgärtel
报道了同步辐射下分子聚集体的光电离和离解电离。本文的主要目的是考虑电离后的团簇内弛豫过程。对于氢键系统，质子转移占主导地位。对于小团簇（n<4），导出了离子团簇的出现势、电离势、质子亲合势、质子溶剂化能和分子间键能。对于货车范德华聚集体，质子转移也可以用来表征离子簇中的分子间键。与没有质子转移的简单芳香族化合物相比，CH 4、SiH 4、CH 3F的聚集体显示质子转移。从碎裂模式和出现势讨论了团簇内离子分子反应的弛豫过程，在异质团簇中观察到团簇内Penning电离。电荷转移共振的位移取决于芳香体系中的π电子密度。这些共振的宽度和光谱位置受团簇尺寸的影响。
The photoionization and dissociative ionization of molecular aggregates using synchrotron radiation is reported. The main objective of the review is to consider the intracluster relaxation processes after ionization. For hydrogen-bonded systems proton transfer is dominant. For small clusters (n<4) appearance potentials, ionization potentials, absolute proton affinities, proton solvation energies and intermolecular bond energies in the ionic clusters are deduced. For van der Waals aggregates proton transfer can also be used to characterize the intermolecular bond in the ionic cluster. Aggregates of CH4, SiH4, CH3F show proton transfer in contrast to simple aromatic compounds, which reveal no proton transfer. From the fragmentation pattern and appearance potentials relaxation by intracluster ion molecule reactions is discussed.In heterogeneous clusters intracluster Penning ionization is observed. The shift of the charge transfer resonances depends on the π-electron density in the aromatic system. The width and spectral position of these resonances are influenced by the cluster size.