title: Preparation of CdS nanocrystals within supramolecular self-assembled nanoreactors and their phase transfer behavior.
abstract: A new strategy for the synthesis of CdS nanocrystals (NCs) within supramolecular self-assembly nanoreactors has been described. The self-assembly nanoreactors were readily constructed through the electrostatic interactions and ion pairs between palmitic acid and the terminal amine groups of hyperbranched polymer. In a chloroform/water two-phase system, aqueous Cd (2+) ions were spontaneously encapsulated into the cavities of self-assembly nanoreactors in chloroform. After reaction with S (2-) ions, the CdS NCs with high stability were obtained. By the addition of excess triethylamine, CdS NCs formed in the self-assembly nanoreactors were transferred from organic phase into aqueous phase. After dialysis and rotorary evaporation, aqueous CdS NCs could be redispersed into chloroform solution containing palmitic acid.
authors.affiliation: School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China.
authors.forename: Yunfeng
authors.initials: Y
authors.lastname: Shi
authors.forename: Chunlai
authors.initials: C
authors.lastname: Tu
authors.forename: Ruibin
authors.initials: R
authors.lastname: Wang
authors.forename: Jiayan
authors.initials: J
authors.lastname: Wu
authors.forename: Xinyuan
authors.initials: X
authors.lastname: Zhu
authors.forename: Deyue
authors.initials: D
authors.lastname: Yan
mesh_terms: D002104:Cadmium / Q000737:chemistry; D019187:Cadmium Compounds / Q000737:chemistry*; D002725:Chloroform / Q000737:chemistry; D005021:Ethylamines / Q000737:chemistry; D007477:Ions; D053768:Metal Nanoparticles / Q000737:chemistry*; D008823:Micelles; D046529:Microscopy, Electron, Transmission; D053758:Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods; D019308:Palmitic Acid / Q000737:chemistry; D011108:Polymers / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared / Q000379:methods; D055672:Static Electricity; D013440:Sulfides / Q000737:chemistry*; D013455:Sulfur / Q000737:chemistry
chemical_list: D019187:Cadmium Compounds; D005021:Ethylamines; D007477:Ions; D008823:Micelles; D011108:Polymers; D013440:Sulfides; D002104:Cadmium; C034939:cadmium sulfide; D019308:Palmitic Acid; D013455:Sulfur; D002725:Chloroform; C016162:triethylamine