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 1387-3806

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Abstract

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 methano[60]fullerene 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
ISSN:	1387-3806
Date:	September 2003
Volume:	229
Number:	1-2
Number of Pages:	8
Page Range:	pp. 3-10
Publication Status:	Published
URI:	http://wrap.warwick.ac.uk/id/eprint/9302

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