Copper-sulfur cluster ions were produced by laser ablation on solid samples: (1) a mixture of copper and sulfur powder, (2) cuprous sulfide compound, (3)cupric suffide compound, respectively. Two main series of cluste...Copper-sulfur cluster ions were produced by laser ablation on solid samples: (1) a mixture of copper and sulfur powder, (2) cuprous sulfide compound, (3)cupric suffide compound, respectively. Two main series of cluster ions were found: (a)[Cu(Cu2S)n]+(n=0-22), (b) [(Cu2S)n]+(n=1-18). The main photodissociation channels of the cluster ions were neutral losses of Cu2S, Cu or CuS. It is obvious that the Cu2S unit plays an important role in the formation and structure of the Cu/S cluster ions, and farthermore, the mied d10 shell eletronic configuration of copper element might be critical to the characteristic of the cluster ions.展开更多
Using the Time of Flight Secondary Ion Mass Spectrometry (TOF-SIMS), the interface interaction between ethyl mercaptan and gold is observed. A series of gold-sulfur cluster ions are shown on the mass spectrum, which d...Using the Time of Flight Secondary Ion Mass Spectrometry (TOF-SIMS), the interface interaction between ethyl mercaptan and gold is observed. A series of gold-sulfur cluster ions are shown on the mass spectrum, which demonstrate the Self-Assembled Monolayers (SAMs) between mercaptan and gold展开更多
文摘Copper-sulfur cluster ions were produced by laser ablation on solid samples: (1) a mixture of copper and sulfur powder, (2) cuprous sulfide compound, (3)cupric suffide compound, respectively. Two main series of cluster ions were found: (a)[Cu(Cu2S)n]+(n=0-22), (b) [(Cu2S)n]+(n=1-18). The main photodissociation channels of the cluster ions were neutral losses of Cu2S, Cu or CuS. It is obvious that the Cu2S unit plays an important role in the formation and structure of the Cu/S cluster ions, and farthermore, the mied d10 shell eletronic configuration of copper element might be critical to the characteristic of the cluster ions.
文摘Using the Time of Flight Secondary Ion Mass Spectrometry (TOF-SIMS), the interface interaction between ethyl mercaptan and gold is observed. A series of gold-sulfur cluster ions are shown on the mass spectrum, which demonstrate the Self-Assembled Monolayers (SAMs) between mercaptan and gold
