Structural information of nanosized iron oxide clusters serendipitously poses the solution of long-standing problems on nanomaterials: Intra/inter surfactant and core-surfactant interaction

초록

Detailed information on the surface structure of surfactant-protected metal oxide nanoparticles (NPs) is limited due to the difficulties in preparing samples suitable for single-crystal x-ray diffraction analysis. Herein, we report the synthesis and x-ray structural analysis of 4-biphenylcarboxylic acid-protected nanosized iron oxide, comprising 11 Fe(III) ions, 6 O atoms, 6 (OH) ions, and 15 biphenylcarboxylates. The carboxylate bridges the adjacent Fe(III) ions in the core and the core form a slightly twisted pentacapped trigonal prism. In addition, widespread intercalation between the phenyl groups on the surface of the nanoparticles is observed.

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