1. A strategy to improve the performance of cerium(iii) photocatalysts.
- Author
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Qiao, Yusen, Cheisson, Thibault, Manor, Brian C., Carroll, Patrick J., and Schelter, Eric J.
- Subjects
PHOTOCATALYSTS ,CERIUM ,ARYL bromides ,CERIUM oxides ,CONES ,LUMINOPHORES - Abstract
A structural modification strategy to improve the photocatalytic performance of a series of cerium(iii) bis(guanidinate) mono(amide) molecular luminophores was demonstrated. Reducing the steric bulkiness of the amide ligand gave rise to two categories of complexes with distinct photophysical and photochemical properties. A structural parameter, the amide cone angle (ϑ), was applied to differentiate the two categories. Complexes with smaller cone angles (ϑ < 156°, category B) exhibited more reducing potentials and faster electron-transfer rates than those of complexes with larger cone angles (ϑ > 173°, category A). And only complexes in the category B could achieve the photocatalytic phenylation of an aryl bromide. These results demonstrated that reducing the steric bulkiness of the amide ligand improved the performance of cerium(iii) bis(guanidinate) mono(amide) photocatalysts in a systematic manner. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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