Role of phosphate-modified mesoporous silica nanoparticles for altering biomimetic metal-induced aggregation process of pluronic F127 block copolymer
Nam, Y; Lee, D; Cho, EunBum
| HERO ID | 2901244 |
|---|---|
| In Press | No |
| Year | 2013 |
| Title | Role of phosphate-modified mesoporous silica nanoparticles for altering biomimetic metal-induced aggregation process of pluronic F127 block copolymer |
| Authors | Nam, Y; Lee, D; Cho, EunBum |
| Journal | Materials Letters |
| Volume | 110 |
| Page Numbers | 176-179 |
| Abstract | Phosphate-modified mesoporous silica nanoparticle (PMSN) with large pores over 10 nm is very effective in disrupting biomimetic aggregates of Pluronic F127 PEO PPO PEO block copolymer induced by Mn2+. Mesoporous silica nanoparticies were prepared using cetyltrimethyl ammonium bromide (DAB) and tetramethyl orthosilicate (TMOS) in basic conditions. Mesopores were expanded up to 15 nm using 1,3,5-trimethylbenzene (TMB) as a pore expander and phosphate groups were attached on the surface of mesoporous silica nanoparticles using 3-(trihydroxysilyl)propyl methylphosphonate (THPMP). F127 block copolymers formed aggregates in Mn2+-containing methanol solution and the aggregation process was abruptly reduced by adding small amount of PMSNs, which are attributed to negatively-charged phosphate groups on PMSN surface and high mesoporosity of PMSNs. TEM images clearly showed PMSNs adsorb F127 block copolymers as well as Mn2+. (C) 2013 Elsevier B.V. All rights reserved. |
| Doi | 10.1016/j.matlet.2013.08.003 |
| Wosid | WOS:000325908300048 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Keyword | Phosphate-modified mesoporous silica nanoparicle; Biomimetic aggregates; Pluronic block copolymer; Mn2+; 1,3,5-Trimethylbenzene |