title: Viologen-mediated assembly of and sensing with carboxylatopillar[5]arene-modified gold nanoparticles.
abstract: Carboxylatopillar[5]arene (CP[5]A), a new water-soluble macrocyclic synthetic receptor, has been employed as a stabilizing ligand for in situ preparation of gold nanoparticles (AuNPs) to gain new insights into supramolecular host-AuNP interactions. CP[5]A-modified AuNPs with good dispersion and narrow size distributions (3.1 ± 0.5 nm) were successfully produced in aqueous solution, suggesting a green synthetic pathway for the application of AuNPs in biological systems. Supramolecular self-assembly of CP[5]A-modified AuNPs mediated by suitable guest molecules was also investigated, indicating that the new hybrid material is useful for sensing and detection of the herbicide paraquat.
authors.affiliation: State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, PR China.
authors.forename: Hui
authors.initials: H
authors.lastname: Li
authors.forename: Dai-Xiong
authors.initials: DX
authors.lastname: Chen
authors.forename: Yu-Long
authors.initials: YL
authors.lastname: Sun
authors.forename: Yue Bing
authors.initials: YB
authors.lastname: Zheng
authors.forename: Li-Li
authors.initials: LL
authors.lastname: Tan
authors.forename: Paul S
authors.initials: PS
authors.lastname: Weiss
authors.forename: Ying-Wei
authors.initials: YW
authors.lastname: Yang
mesh_terms: D006046:Gold / Q000737:chemistry*; D053768:Metal Nanoparticles / Q000737:chemistry*; D008958:Models, Molecular; D015394:Molecular Structure; D010316:Particle Size; D000644:Quaternary Ammonium Compounds / Q000737:chemistry*; D013499:Surface Properties; D014755:Viologens / Q000737:chemistry*
chemical_list: D000644:Quaternary Ammonium Compounds; D014755:Viologens; C582352:carboxylatopillar(5)arene; D006046:Gold