MALDI mass spectrometric determination of molecular site-specific charge localisation, and laser-induced coalescence reactivity of fullerenodendrimers
UNSPECIFIED. (2003) MALDI mass spectrometric determination of molecular site-specific charge localisation, and laser-induced coalescence reactivity of fullerenodendrimers. INTERNATIONAL JOURNAL OF MASS SPECTROMETRY, 229 (1-2). pp. 3-10. ISSN 1387-3806Full text not available from this repository.
Official URL: http://dx.doi.org/10.1016/S1387-3806(03)00249-5
Fullerenodendrimers have been studied by matrix-assisted laser desorption/ionization (MALDI) time-of-flight (ToF) mass spectrometry. The compounds under investigation included the first-, second- and slightly modified second-generation phenylacetylene dendritic C-60 mono-ligands. The bimodal structure of these fullerenodendrimers is reflected in the charge localisation and ion formation during MALDI mass spectrometry. While metal ion (Ag+) attachment occurs through interaction with the dentritic ligand, electron-transfer ionization seems to involve predominately the fullerene moiety. The latter conclusion is particularly evident for the formation of the negatively charged molecular ions. In direct laser ablation experiments, the coalescence reactivity has been compared with methanofullerene derivatives featuring smaller ligands that display enhanced formation of larger carbon clusters. However, the presence of the dendritic phenylacetylene ligand hindered reactive interactions between the fullerene entities, thereby completely preventing coalescence. (C) 2003 Elsevier B.V. All rights reserved.
|Item Type:||Journal Article|
|Subjects:||Q Science > QC Physics|
|Journal or Publication Title:||INTERNATIONAL JOURNAL OF MASS SPECTROMETRY|
|Publisher:||ELSEVIER SCIENCE BV|
|Official Date:||September 2003|
|Number of Pages:||8|
|Page Range:||pp. 3-10|
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