title: Wormlike morphology formation and stabilization of "pluronic p123" micelles by solubilization of pentaerythritol tetraacrylate.
abstract: A transition from spherical to wormlike micelles of a poly(ethylene oxide) 20- block-poly(propylene oxide) 70- block-poly(ethylene oxide) 20 triblock copolymer Pluronic P123 induced by solubilization of a tetrafuctional monomer, Pentaerythritol tetraacrylate (PETA), in aqueous media has been studied. The wormlike micelles shape was locked by UV cross-linking of PETA within the micelles resulting in stabilized polymeric micelles (SPMs). The stability of SPMs in a good solvent for both polyether blocks like THF, and upon dilution below the critical micelle concentration (CMC) of P123 in water was confirmed by dynamic light scattering (DLS) and scanning force microscopy (SFM). Formation of cadmium sulfide (CdS) nanoparticles within the wormlike SPMs was carried out via the reduction of Cd (2+) with NaS and analyzed by transmission electron microscopy (TEM) and UV-vis absorption measurements. A stable water-dispersible hybrid system consisting of CdS quantum dots embedded into the wormlike SPMs was obtained.
authors.affiliation: Institute of Polymers, Bulgarian Academy of Sciences, Akad. G. Bonchev 103A, Sofia, Bulgaria. ppetrov@polymer.bas.bg
authors.forename: Petar
authors.initials: P
authors.lastname: Petrov
authors.forename: Jiayin
authors.initials: J
authors.lastname: Yuan
authors.forename: Krassimira
authors.initials: K
authors.lastname: Yoncheva
authors.forename: Axel H E
authors.initials: AH
authors.lastname: Müller
authors.forename: Christo B
authors.initials: CB
authors.lastname: Tsvetanov
mesh_terms: D000179:Acrylates / Q000737:chemistry*; D019187:Cadmium Compounds / Q000138:chemical synthesis; D003432:Cross-Linking Reagents / Q000737:chemistry; D008823:Micelles; D011060:Poloxalene / Q000737:chemistry*; D011409:Propylene Glycols / Q000737:chemistry*; D045663:Quantum Dots; D012995:Solubility; D013440:Sulfides / Q000138:chemical synthesis; D013501:Surface-Active Agents / Q000737:chemistry*; D014466:Ultraviolet Rays
chemical_list: D000179:Acrylates; D019187:Cadmium Compounds; D003432:Cross-Linking Reagents; D008823:Micelles; D011409:Propylene Glycols; D013440:Sulfides; D013501:Surface-Active Agents; C034939:cadmium sulfide; C464484:pluronic block copolymer P123; C531365:pentaerythritol tetraacrylate; D011060:Poloxalene