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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Sun, Shuqing Yuan, Jianjun Jiang, Lei Cheng, Shiyuan Li, Xiaoqing Liu, Huan |
| Description | Country affiliation: China Author Affiliation: Li X ( Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials, Faculty of Materials Sciences and Engineering, Hubei University, 430062 Wuhan, China.) |
| Abstract | Cationic poly(acrylamide-co-2-(dimethylamino) ethyl methacrylate, methyl chloride quaternized) (poly(AM-co-DMC)) microgels with various cross-linking degrees and compositions were synthesized and used as colloidal templates for controlled formation of microgel-silica hybrid particles at ambient conditions. The combined studies from transmission electron microscopy, solid-state (29)Si magic angle spinning NMR spectroscopy, thermogravimetry and aqueous electrophoresis indicated that the porous nanostructure, composition and surface zeta potentials of microgel-silica hybrid particles could be well controlled by simply adjusting the silicification reaction times, cross-linking degrees and compositions of microgels and media composition for silica deposition. Comparative studies from thermogravimetry and X-ray photoelectron spectroscopy on the compositions of microgel-silica particles prepared from different silica deposition times indicated that organic-inorganic composition distribution of hybrid particles is not uniform for whole particles, with silica-rich core and copolymer-rich shell. Furthermore, we demonstrated the facile incorporation of tetra(4-sulfonatophenyl)porphine (TSPP) molecules into microgel-silica particles, leading to the biomimetic formation of porous hybrid particles with bright fluorescent emission features. We expect that these well controlled and functionalized hybrid particles have potential applications for encapsulation, controlled release, labeling or imaging. |
| ISSN | 00219797 |
| Issue Number | 2 |
| Volume Number | 348 |
| e-ISSN | 10957103 |
| Journal | Journal of Colloid and Interface Science |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2010-08-15 |
| Publisher Place | United States |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Nanostructures Porphyrins Chemistry Silicon Dioxide Biomimetics Microscopy, Electron, Transmission Photoelectron Spectroscopy Surface Properties Journal Article Research Support, Non-u.s. Gov't Discipline Colloid & Interface Science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Surfaces, Coatings and Films Colloid and Surface Chemistry Biomaterials Electronic, Optical and Magnetic Materials |
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