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MALDI 机制:耦合光物理和化学动力学模型的波长和基质依赖性。

MALDI mechanisms: wavelength and matrix dependence of the coupled photophysical and chemical dynamics model.

机构信息

Tofwerk, Thun, Switzerland.

出版信息

Analyst. 2014 Jan 7;139(1):147-56. doi: 10.1039/c3an01446k. Epub 2013 Nov 11.

DOI:10.1039/c3an01446k
PMID:24217779
Abstract

The ultraviolet wavelength and fluence dependence of MALDI ion yields using several matrices has recently been reported (Soltwisch et al., Anal. Chem., 2012, 84, 6567). These extensive data provide a test of the coupled photophysical and chemical dynamics (CPCD) model, and are used to extend the model to new matrices. The experimental phenomena are generally well reproduced by the model, particularly when transient photochemical products or exciplexes are included. While the CPCD is consistent with the data, thermal models appear to be largely incompatible with it.

摘要

最近有报道称(Soltwisch 等人,《分析化学》,2012 年,84 卷,6567 页),几种基质的 MALDI 离子产率与紫外线波长和光通量的关系。这些广泛的数据为耦合光物理和化学动力学(CPCD)模型提供了一个测试,并被用于将模型扩展到新的基质。实验现象通常可以通过该模型很好地重现,尤其是当包括瞬态光化学产物或激基复合物时。尽管 CPCD 与数据一致,但热模型似乎与之在很大程度上不兼容。

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