Structure and Charge Heterogeneity in Isomeric Au25(MBA)18 Nanoclusters—Insights from Ion Mobility and Mass Spectrometry | Zendy

Clothilde CombyZerbino | Zendy; Franck Bertorelle | Zendy; Philippe Dugourd | Zendy; Rodolphe Antoine | Zendy; Fabien Chirot | Zendy

Open Access

Structure and Charge Heterogeneity in Isomeric Au₂₅(MBA)₁₈ Nanoclusters—Insights from Ion Mobility and Mass Spectrometry

Author(s) -

Clothilde CombyZerbino,

Franck Bertorelle,

Philippe Dugourd,

Rodolphe Antoine,

Fabien Chirot

Publication year - 2020

Publication title -

the journal of physical chemistry a

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.756

H-Index - 235

eISSN - 1520-5215

pISSN - 1089-5639

DOI - 10.1021/acs.jpca.0c03131

Subject(s) - nanoclusters , mass spectrometry , ion mobility spectrometry , ion , charge (physics) , protonation , chemistry , deprotonation , chemical physics , analytical chemistry (journal) , crystallography , physics , organic chemistry , chromatography , quantum mechanics

Atomically precise Au 25 (MBA) 18 nanoclusters were investigated by mass spectrometry and ion mobility spectrometry. We show that clusters sharing the same chemical composition and bearing the same net charge may display different structures and different charge repartition patterns, namely, the number of charges corresponding to deprotonation of the ligand moieties through carboxyl groups is not the same for all detected species. Part of the observed heterogeneity is a consequence of spontaneous electron loss occurring in the gas phase, which modifies the net charge of the clusters while maintaining the initial (de)protonation state.

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