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Electron Transition-Based Optical Activity (ETOA) of Achiral Metal Oxides Derived from Chiral Mesoporous Silica

Authors

  • Yingying Duan,

    1. School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Key Laboratory for Thin Film and Micro-fabrication Technology of the Ministry of Education, 800 Dongchuan Road, Shanghai, 200240 (P.R. China)
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  • Prof. Shunai Che

    Corresponding author
    1. School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Key Laboratory for Thin Film and Micro-fabrication Technology of the Ministry of Education, 800 Dongchuan Road, Shanghai, 200240 (P.R. China)
    • School of Chemistry and Chemical Engineering, State Key Laboratory of Metal Matrix Composites, Key Laboratory for Thin Film and Micro-fabrication Technology of the Ministry of Education, 800 Dongchuan Road, Shanghai, 200240 (P.R. China)
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Abstract

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Stimulating stuff: The synthesis and optical activities of several metal oxide nanoparticles introduced in the helical pores of chiral mesoporous silica supports are reported (see figure). Both coloured and colourless metal oxides exhibited the Cotton effect at their characteristic absorption bands, attributed to electronic transitions from the ground state to excited states under an asymmetric electric field.

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