Journal
ACS COMBINATORIAL SCIENCE
Volume 20, Issue 4, Pages 243-250Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acscombsci.8b00017
Keywords
silver nanoparticles; ionic liquids; sputter deposition; combinatorial methods; high-throughput characterization
Funding
- BMBF project NEMEZU
- DFG [LU1175/23-1]
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A high-throughput method is presented for the efficient assessment of the formation and stability of nanoparticle suspensions in ionic liquids which differ in their cations and anions. As a proof of principle, Ag was sputtered on a cavity array filled with 9 different ionic liquids. Not all nanopartide ionic liquid combinations form a stable suspension with separated nano particles. Directly after synthesis, the formation of nonagglomerated nanoparticle suspensions with sizes from 4 to 9 nm is observed by transmission electron microscopy as well as different time dependencies of the suspension stabilities. Only 3 out of the tested 9 nanopartide ionic liquid suspensions show longterm stability: Stable suspension of spherical nanopartides are formed in the ionic liquids 1-butyl-3-methylimidazolium bis(perfluoroethylsulfonyl)imide [Bmirn][(Pf)(2)N], 1-buty1-3-methylimidazoliurn bis(trifluoromethylsulfonypirnide [Binim][(Tf)(2)N], and 1-butyl-1-methylpyrrolidinum bis(trifluoromethylsulfonypimide [BinPyr][(Tf)(2)N].
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