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

doi:10.1021/jp044984g

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 journal › Article › peer-review

20 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 language	English
Pages (from-to)	681-684
Number of pages	4
Journal	Journal of Physical Chemistry B
Volume	109
Issue number	2
DOIs	https://doi.org/10.1021/jp044984g
Publication status	Published - Jan 20 2005
Externally published	Yes

ASJC Scopus subject areas

Physical and Theoretical Chemistry
Surfaces, Coatings and Films
Materials Chemistry

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10.1021/jp044984g

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title = "Probing the alkyl ligands on silylated mesoporous MCM-41 using hyperpolarized129Xe NMR spectroscopy",

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.",

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

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doi = "10.1021/jp044984g",

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journal = "Journal of Physical Chemistry B",

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T1 - Probing the alkyl ligands on silylated mesoporous MCM-41 using hyperpolarized129Xe NMR spectroscopy

AU - Huang, Shing Jong

AU - Huang, Chin Hui

AU - Chen, Wen Hua

AU - Sun, Xianping

AU - Zeng, Xizhi

AU - Lee, Huang Kuei

AU - Ripmeester, John A.

AU - Mou, Chuan Yuan

AU - Liu, Shang Bin

PY - 2005/1/20

Y1 - 2005/1/20

N2 - 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.

AB - 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.

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JF - Journal of Physical Chemistry B

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ER -

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

Abstract

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