▎ 摘　　要

The formation of W (x) O (y) (+au/-au) clusters in the gas phase was studied by laser desorption ionization (LDI) and matrix assisted laser desorption ionization (MALDI) of solid WO3. LDI produced (WO3) (n) (+ au/- au) (n = 1-7) clusters. In MALDI, when using nano-diamonds (NDs), graphene oxide (GO), or fullerene (C-60) matrices, higher mass clusters were generated. In addition to (WO3) (n) (-au) clusters, oxygen-rich or -deficient species were found in both LDI and MALDI (with the total number of clusters exceeding one hundred ae 137). This is the first time that such matrices have been used for the generation of(WO3) (n) (+au/-au) clusters in the gas phase, while new high mass clusters (WO3) (n) (-au) (n = 12-19) were also detected.