title: Phase transfer of gold nanoparticles from aqueous to organic solution containing resorcinarene.
abstract: Citrate-capped gold nanoparticles (NPs) in aqueous solution were transferred directly into the organic solution mesitylene containing C-undecylcalix[4]-resorcinarene (C11-resorcinarene). C11-resorcinarene, which has long hydrophobic tails and phenolic hydroxyl groups, acted as both a phase-transfer and a capping agent. The C11-resorcinarene-capped gold particles could be isolated and dispersed in different organic solvents. Optical absorption spectra corresponding to surface plasmon resonance provided a broad band centered at 534 nm for C11-resorcinarene-capped gold NPs in mesitylene. High-resolution transmission electron micrograph images revealed that the average particle diameter of C11-resorcinarene-capped gold NPs is approximately 12 nm.
authors.affiliation: Department of Chemistry, National Taiwan University, 1, Sec-4, Roosevelt Road, Taipei 10617, Taiwan.
authors.forename: Tarun Kumar
authors.initials: TK
authors.lastname: Misra
authors.forename: Tse-Shien
authors.initials: TS
authors.lastname: Chen
authors.forename: Chuen-Ying
authors.initials: CY
authors.lastname: Liu
mesh_terms: D047250:Calixarenes; D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D010316:Particle Size; D010649:Phenylalanine / Q000031:analogs & derivatives* / Q000737:chemistry; D012997:Solvents; D013057:Spectrum Analysis; D020349:Surface Plasmon Resonance; D014867:Water
chemical_list: D012997:Solvents; C466160:resorcinarene; D014867:Water; D047250:Calixarenes; D010649:Phenylalanine; D006046:Gold