2008
DOI: 10.1039/b715502f
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Abstract: Functionalization via covalent grafting of organic functions allows to tune the redox and acid-base properties, and the solubility of polyoxometalates, to enhance their stability and biological activity and to reduce their toxicity, to facilitate their implementation in extended structures and functional devices. We discuss herein the electronic and binding connections, and the various synthesis methodologies. We emphasize on organonitrogen, organosilyl and organophosphonyl derivatives with special attention t… Show more

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Cited by 848 publications
(433 citation statements)
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“…Thus, POMc12 ISD fragments could be considered as fragments originating from prompt processes involving electronic excitation, which is consistent with the fact that matrix molecules may access excited electronic states upon laser photon absorption [40]. Moreover, due to the presence of the transition metal atoms (tungsten) that are quite capable to accumulate electrons upon minor structural reorganization [10], we can rationalize why the presence of radical hydrogens does not promote fragmentations (e.g., DHB and SA induce extremely low ISD for POMc12 fragments, contrary to what has been observed for analyte biological molecules [41]). …”
Section: Maldi In-source Decay (Isd) Of Pomc12 Mechanism Of Decompossupporting
confidence: 53%
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“…Thus, POMc12 ISD fragments could be considered as fragments originating from prompt processes involving electronic excitation, which is consistent with the fact that matrix molecules may access excited electronic states upon laser photon absorption [40]. Moreover, due to the presence of the transition metal atoms (tungsten) that are quite capable to accumulate electrons upon minor structural reorganization [10], we can rationalize why the presence of radical hydrogens does not promote fragmentations (e.g., DHB and SA induce extremely low ISD for POMc12 fragments, contrary to what has been observed for analyte biological molecules [41]). …”
Section: Maldi In-source Decay (Isd) Of Pomc12 Mechanism Of Decompossupporting
confidence: 53%
“…The first part concerns high mass fragments (m/z >2500) which still contain a portion of the organic functionalization. Among these decomposition products, the fragment ion centered at m/z 2627 [HSiW 10 (Figure 2), whatever the Group 1 matrix used (i.e., CNA, IAA, HABA, DAN, DIT, DCTB and CHCA). This m/z 2627 fragment appears in variable relative intensity and could possibly include a contribution from product degradation occurring at the moment of target preparation, instead of being produced during the MALDI process.…”
Section: Maldi In-source Decay (Isd) Of Pomc12 Mechanism Of Decomposmentioning
confidence: 99%
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