Surface modification of ordered mesoporous carbons via 1,3-dipolar cycloaddition of azomethine ylides

Xiqing Wang; De En Jiang; Sheng Dai

doi:10.1021/cm800717b

Surface modification of ordered mesoporous carbons via 1,3-dipolar cycloaddition of azomethine ylides

Xiqing Wang, De En Jiang, Sheng Dai

Chemical Sciences Division

Oak Ridge National Laboratory

Research output: Contribution to journal › Article › peer-review

33 Scopus citations

Abstract

The functionalization of ordered mesoporous carbons (OMCs) by means of 1,3-dipolar cycloaddition of azomethine ylides, generated by thermal condensation of an α-amino acid and an aldehyde has been reported. Hexagonal OMC C-ORNL-1 and highly graphitic mesoporous carbon were synthesized by self-assembly of block copolymers and phenolic resins under acidic conditions. Surface modification of such OMC was carried out by heating a mixture of N-methylglycine and an aldehyde at reflux in a solvent in the presence of C-ORNL-1. All modified samples were observed to have an isotherm shape similar to that of pristine C-ORNL-1, indicating the maintenance of highly ordered mesostructure after surface modification. The pristine C-ORNL-1 also exhibited a slight weight loss, which could be attributed to the chemically/physically adsorbed species, while major weight losses took place in the temperature range of 200-500 °C, due to the decomposition of pyrrolidines.

Original language	English
Pages (from-to)	4800-4802
Number of pages	3
Journal	Chemistry of Materials
Volume	20
Issue number	15
DOIs	https://doi.org/10.1021/cm800717b
State	Published - Aug 12 2008

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title = "Surface modification of ordered mesoporous carbons via 1,3-dipolar cycloaddition of azomethine ylides",

abstract = "The functionalization of ordered mesoporous carbons (OMCs) by means of 1,3-dipolar cycloaddition of azomethine ylides, generated by thermal condensation of an α-amino acid and an aldehyde has been reported. Hexagonal OMC C-ORNL-1 and highly graphitic mesoporous carbon were synthesized by self-assembly of block copolymers and phenolic resins under acidic conditions. Surface modification of such OMC was carried out by heating a mixture of N-methylglycine and an aldehyde at reflux in a solvent in the presence of C-ORNL-1. All modified samples were observed to have an isotherm shape similar to that of pristine C-ORNL-1, indicating the maintenance of highly ordered mesostructure after surface modification. The pristine C-ORNL-1 also exhibited a slight weight loss, which could be attributed to the chemically/physically adsorbed species, while major weight losses took place in the temperature range of 200-500 °C, due to the decomposition of pyrrolidines.",

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year = "2008",

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T1 - Surface modification of ordered mesoporous carbons via 1,3-dipolar cycloaddition of azomethine ylides

AU - Wang, Xiqing

AU - Jiang, De En

AU - Dai, Sheng

PY - 2008/8/12

Y1 - 2008/8/12

N2 - The functionalization of ordered mesoporous carbons (OMCs) by means of 1,3-dipolar cycloaddition of azomethine ylides, generated by thermal condensation of an α-amino acid and an aldehyde has been reported. Hexagonal OMC C-ORNL-1 and highly graphitic mesoporous carbon were synthesized by self-assembly of block copolymers and phenolic resins under acidic conditions. Surface modification of such OMC was carried out by heating a mixture of N-methylglycine and an aldehyde at reflux in a solvent in the presence of C-ORNL-1. All modified samples were observed to have an isotherm shape similar to that of pristine C-ORNL-1, indicating the maintenance of highly ordered mesostructure after surface modification. The pristine C-ORNL-1 also exhibited a slight weight loss, which could be attributed to the chemically/physically adsorbed species, while major weight losses took place in the temperature range of 200-500 °C, due to the decomposition of pyrrolidines.

AB - The functionalization of ordered mesoporous carbons (OMCs) by means of 1,3-dipolar cycloaddition of azomethine ylides, generated by thermal condensation of an α-amino acid and an aldehyde has been reported. Hexagonal OMC C-ORNL-1 and highly graphitic mesoporous carbon were synthesized by self-assembly of block copolymers and phenolic resins under acidic conditions. Surface modification of such OMC was carried out by heating a mixture of N-methylglycine and an aldehyde at reflux in a solvent in the presence of C-ORNL-1. All modified samples were observed to have an isotherm shape similar to that of pristine C-ORNL-1, indicating the maintenance of highly ordered mesostructure after surface modification. The pristine C-ORNL-1 also exhibited a slight weight loss, which could be attributed to the chemically/physically adsorbed species, while major weight losses took place in the temperature range of 200-500 °C, due to the decomposition of pyrrolidines.

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U2 - 10.1021/cm800717b

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Surface modification of ordered mesoporous carbons via 1,3-dipolar cycloaddition of azomethine ylides

Abstract

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