Side-chain substituent effects on green luminescence of terbium activated hybrid xerogels

We have reported the synthesis of three chemical bonded hybrid materials based on silica matrices composed of terbium ions and aromatic acid derivatives. Of significant importance, ligand 1 was grafted with three long alkyl chains and the as-derived hybrid 1 exhibited attracting green luminescence in solid matrices which is much stronger than ligand 2 which does not bear aliphatic chains. All the fluorescence spectra, quantum yields, and time-resolved spectra proved that the side chains influence for the effective sensitization of terbium ions.

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