CN
- Encapsulation of TiO2 nanoparticles with poly(4-vinylpyridine) using surface functionalized thiol-lactam initiated radical polymerization.
Encapsulation of TiO2 nanoparticles with poly(4-vinylpyridine) using surface functionalized thiol-lactam initiated radical polymerization.
Journal of nanoscience and nanotechnology (2013-07-19)
Md Rafiqul Islam, Long Giang Bach, Jung Hyun Jeong, Hyun Gyu Kim, Kwon Taek Lim
PMID23858899
摘要
A nanocomposite of TiO2 nanoparticle with an electroactive poly(4-vinylpyridine) (PVP) was synthesized via a simple surface thiol-lactam initiated radical polymerization upon grafting from protocol. This can be achieved through the primary modification of the TiO2 surface with a silane coupling agent leading to thiol functionalized TiO2 (TiO2-SH). Subsequently, a controlled radical polymerization of 4-vinylpyridine in the presence of TiO2-SH and butyrolactam afforded PVP-g-TiO2 nanocomposites. The grafting of PVP on the surface of TiO2 was confirmed by FT-IR, TGA, XPS, EDX, TEM and SEM analyses. The UV-vis studies of the synthesized PVP-g-TiO2 nanocomposite demonstrated an exceptionally good dispersibility in organic solvents.
材料
货号
品牌
产品描述
Sigma-Aldrich
氧化钛（IV）, nanopowder, 21 nm primary particle size (TEM), ≥99.5% trace metals basis
Sigma-Aldrich
氧化钛(IV)，金红石和锐钛矿混合物, nanopowder, <100 nm particle size (BET), 99.5% trace metals basis
Sigma-Aldrich
氧化钛(IV)，金红石和锐钛矿混合物, nanoparticles, <150 nm particle size (volume distribution, DLS), dispersion, 40 wt. % in H2O, 99.5% trace metals basis
Sigma-Aldrich
钛 (IV) 氧化物，金红石型, <001>, (single crystal substrate), ≥99.9% trace metals basis, L × W × thickness 10 mm × 10 mm × 0.5 mm