In this Account, we discuss the usefulness of the sol-gel process in the synthesis of materials comprising nanoscale architectures. We describe the processing of semiconducting, metallic, ferroelectric, or scintillating nanoparticles in various oxide matrices. We also discuss the synthesis of some nanoporous oxides and organic-inorganic nanohybrids, including core-shell nanostructures.

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Low-hydroxyl organically modified silicates (ORMOSILS) were fabricated by a nonhydrolytic reaction between methyl-modified silicon halides and tertiary butyl alcohol under controlled atmosphere. The gels were characterized by DTA and TGA., FTIR, 1 H NMR and 29 Si NMR. The solutions were doped with anhydrous Er13, which was dissolved in the sol prior to gelation. Er 3 +luminescence in the gels was observed at 570 nm under excitation at 488 nm.

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