The formation of W _x O _y ^+●/-● 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 ^{+ ●/- ●} (n = 1-7) clusters. In MALDI, when using nano-diamonds (NDs), graphene oxide (GO), or fullerene (C₆₀) matrices, higher mass clusters were generated. In addition to (WO₃) _n ^-● clusters, oxygen-rich or -deficient species were found in both LDI and MALDI (with the total number of clusters exceeding one hundred ≈ 137). This is the first time that such matrices have been used for the generation of(WO₃) _n ^+●/-● clusters in the gas phase, while new high mass clusters (WO₃) _n ^-● (n = 12-19) were also detected.

Open image in new window

通过固体WO ₃的激光解吸电离（LDI）和基质辅助激光解吸电离（MALDI）研究了气相中W _x O _y ^+●/-●团簇的形成。LDI产生（WO ₃）_n ^+●/-●（n = 1-7）簇。在MALDI中，当使用纳米金刚石（NDs），氧化石墨烯（GO）或富勒烯（C ₆₀）基质时，会生成更高质量的簇。除了（WO ₃）_n- ^● 在LDI和MALDI中都发现了富集或缺氧的簇（簇的总数超过100≈137）。这是首次在气相中使用此类矩阵生成（WO ₃）_n ^{+ ●/ -●}团簇，而新的高质量团簇（WO ₃）_n- ^●（n = 12-19）也被检测到。

在新窗口中打开图像