ABSTRACT
Chemical vapor deposition of tetramethoxysilane on tin oxide with
pre-adsorbed template molecules forms a silica overlayer possessing
cavities whose shape and size are controlled by the template
molecule. Selective adsorption and sensing properties based on the
molecular shape are generated. Thus obtained molecular-sieving
sensor selectively detects alkane, alcohol, and aldehyde molecules
smaller than the template molecule with high selectivity.
