title: Chiral ionic liquid monolayer-stabilized gold nanoparticles: synthesis, self-assembly, and application to SERS.
abstract: Chiral ionic liquid monolayer-stabilized gold nanoparticles were synthesized in a two-phase liquid-liquid system and found to self-assemble into ringlike structures at the air/water interface. Control experiments with long-chain ILs revealed that the molecular structure of the CIL significantly affects the formation of the gold nanoparticle ring structures. A possible mechanism based on Marangoni-Bénard convection in evaporating droplets was proposed. These gold nanoparticle structures were shown to yield a large SERS enhancement for Rhodamine 6G.
authors.affiliation: Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan 250100, China.
authors.forename: Xiangtao
authors.initials: X
authors.lastname: Bai
authors.forename: Xinwei
authors.initials: X
authors.lastname: Li
authors.forename: Liqiang
authors.initials: L
authors.lastname: Zheng
mesh_terms: D000388:Air; D006046:Gold / Q000737:chemistry*; D052578:Ionic Liquids / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D013059:Spectrum Analysis, Raman; D013237:Stereoisomerism; D014867:Water / Q000737:chemistry
chemical_list: D052578:Ionic Liquids; D014867:Water; D006046:Gold