Optical absorption and XPS analyses have shown that titania Q-state particles (< 10 nm diameter) can be fabricated within arachidic (icosanoic) acid and cadmium arachidate Langmuir-Blodgett (LB) films by sequential exposure to gaseous titanium tetrachloride and water vapour; when a cadmium arachidate film was subsequently gassed with H2S, sulfur was not incorporated into the film; CdS was not formed.