Probing the alkyl ligands on silylated mesoporous MCM-41 using hyperpolarized129Xe NMR spectroscopy

Shing Jong Huang, Chin Hui Huang, Wen Hua Chen, Xianping Sun, Xizhi Zeng, Huang Kuei Lee, John A. Ripmeester, Chuan Yuan Mou, Shang Bin Liu

Research output: Contribution to journalArticlepeer-review

18 Citations (Scopus)

Abstract

Variable-temperature hyperpolarized (HP) 129Xe NMR spectroscopy has been employed to characterize surface properties of mesoporous MCM-41 modified by silylation treatment. The characteristic chemical shifts responsible for Xe-surface interactions exhibit strong correlations with both the surface coverage and chain length of the grafted alkylsilanes. Consequently, the deshielding medium contribution due to individual alkyl ligand can be deduced based on the group contribution analysis revealing the potential use of HP 129Xe NMR for probing the surface properties of organic-functionalized porous materials.

Original languageEnglish
Pages (from-to)681-684
Number of pages4
JournalJournal of Physical Chemistry B
Volume109
Issue number2
DOIs
Publication statusPublished - Jan 20 2005
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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