期刊
ACS APPLIED MATERIALS & INTERFACES
卷 9, 期 46, 页码 40998-41005出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.7b12465
关键词
electron beam induced deposition; chemical vapor deposition; volatility; aurophilic interactions; Au(I) precursors
资金
- FEI
- American Chemical Society Petroleum Research Fund [54519-ND5]
- National Science Foundation [CHE-1607547]
- University of Florida
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1607547] Funding Source: National Science Foundation
Trends in volatility with changes in the halide ligand were established for gold(I) complexes of the type X-Au-L [X = Cl, Br, I; L = CNMe, PMe3, P(NMe2)(3), P(OCH2CF3)(3)] by determining the temperatures for the onset of sublimation (T-sub) at a fixed pressure. Within each series of isocyanide complexes, T-sub decreases with increasing atomic radius of the halide, making the iodide complex the most volatile. For the phosphine and phosphoramidate complexes, the chloride and bromide have similar T-sub values with the bromide slightly higher, but the iodide complex is again the most volatile of the three. The trends in volatility can be correlated to variation in Au Au bond distances and aggregation patterns in the solid state structures. For the P(OCH2CF3)(3) complexes, melting occurred before sublimation, but the iodide complex was still more volatile than the bromide. These trends have implications for the use of these complexes in electron beam induced deposition and chemical vapor deposition, for which precursor volatility is important.
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