Abstract
Ultrafine semiconductor particles of cadmium sulfide were generated through exposing poly-(pentacosa-10, 12-diynoic acid) (PDA) Langmuir-Blodgett (LB) films to hydrogen sulfide gas. With the generation of ultrafine particles, the blue form of PDA multilayers was converted to the red form. UV-visible absorption spectra and ellipsometric measurements were made to study the generation of ultrafine particles and the colour phase transition of PDA LB films.
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