Abstract
A study was conducted to demonstrate a technique for selective enrichment of multiple phosphorylated peptides by manipulating the surface chemistry of TiO2-modified macroporous ordered silica foams (Ti-MOSF-1). It was demonstrated that TiO2-modified MOSF material had a surface area and that its surface was rich in coordinatively unsaturated TiIV, providing for more abundant and selective binding sites for phosphopeptides. The pure and modified MOSFs were also characterized in detail to understand their material characteristics and phosphopeptide enrichment behaviors. Some aggregates associated with the formation of Ti nanocrystals were also observed on the surface of Ti-MOSF-3 after the TiO2 was modified three times. It was also demonstrated that the surface modification of MOSF and the incorporation of the TiO2 were essential for the phosphopeptide enrichment behaviors.
| Original language | English |
|---|---|
| Pages (from-to) | 2504-2508 |
| Number of pages | 5 |
| Journal | Chemistry - A European Journal |
| Volume | 15 |
| Issue number | 11 |
| DOIs | |
| State | Published - 2 Mar 2009 |
| Externally published | Yes |
Keywords
- Enrichment
- Macroporous
- Peptides
- Silica foams
- Titanium