TiO2-modified macroporous silica foams for advanced enrichment of multi-phosphorylated peptides

  • Jingjing Wan*
  • , Kun Qian
  • , Liang Qiao
  • , Yunhua Wang
  • , Jilie Kong
  • , Pengyuan Yang
  • , Baohong Liu
  • , Chengzhong Yu
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

62 Scopus citations

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 languageEnglish
Pages (from-to)2504-2508
Number of pages5
JournalChemistry - A European Journal
Volume15
Issue number11
DOIs
StatePublished - 2 Mar 2009
Externally publishedYes

Keywords

  • Enrichment
  • Macroporous
  • Peptides
  • Silica foams
  • Titanium

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