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Preparation of a ruthenium complex covalently bonded to multilayer graphene and its evaluation as a photocatalyst.

ABSTRACT: Multilayer graphene (MLG), obtained by mild sonication of graphite in NMP, was functionalised via 1,3-dipolar cycloaddition with azomethine ylides generated by thermal 1,2-prototropy from various imino esters. The microwave-assisted functionalisation took place in five hours at 100 °C. The resulting MLG, containing substituted proline-based amine functional groups, was characterized using XPS and showed a nitrogen loading three times that obtained for the same transformation performed for five days using convection-assisted heating. The preparation of the imino ester containing a bipyridine unit at the arylidene position allowed for the preparation of the corresponding functionalised MLG, which incorporated the ruthenium atom to achieve a heterogeneous MLG-Ru complex. This supported complex was tested, as a proof of concept, as a photocatalyst of the aerobic oxidative hydroxylation of 4-methoxyphenylboronic acid.

SUBMITTER: Rodriguez-Florez LV

PROVIDER: S-EPMC10929589 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature

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Preparation of a ruthenium complex covalently bonded to multilayer graphene and its evaluation as a photocatalyst.

Rodríguez-Flórez Lesly V LV de Gracia Retamosa María M Navlani-García Miriam M Cazorla-Amorós Diego D Nájera Carmen C Yus Miguel M Sansano José M JM

Nanoscale advances 20240209 6

Multilayer graphene (MLG), obtained by mild sonication of graphite in NMP, was functionalised <i>via</i> 1,3-dipolar cycloaddition with azomethine ylides generated by thermal 1,2-prototropy from various imino esters. The microwave-assisted functionalisation took place in five hours at 100 °C. The resulting MLG, containing substituted proline-based amine functional groups, was characterized using XPS and showed a nitrogen loading three times that obtained for the same transformation performed for ...[more]

PMID: 38482040

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Dataset Information

Preparation of a ruthenium complex covalently bonded to multilayer graphene and its evaluation as a photocatalyst.

Publications

Preparation of a ruthenium complex covalently bonded to multilayer graphene and its evaluation as a photocatalyst.

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