Photochemical Synthesis of Ultrafine Particles under Two-photon Excitation of Some Gaseous Molecules

Abstract

A new photochemical method to synthesize ultrafine particles from gaseous molecules is presented. The method was applied to gaseous mixtures of acrolein and some organosilicon compounds. From the chemical analysis of deposited ultrafine particles, it was found that two-photon excitation of organosilicon compounds produced novel chemical species. Surface characters of polyacrolein particles were successfully modified with gaseous cyclotetrasiloxane and with gaseous organic azide. Applicability of these particles to nanotechnology is briefly discussed.