Abstract
Abstract Cosolvent-free hydrolytic polycondensation of trimethoxy(3-sulfanylpropyl)silane under acidic conditions was found to yield thiol-containing polysilsesquioxane (PSQ) liquid. The resultant PSQ liquid is stable at room temperature and serves as a precursor of sulfur-containing transparent organic–inorganic hybrid monoliths prepared via ultraviolet (UV) photoinduced thiol–ene reaction. The factors that determine the UV transparency of the hybrids were investigated. Sulfur-containing organic–inorganic hybrids showing good transparency in the UV spectral region are obtained using a vinyl compound, which is transparent around the UV absorption edge of thiol groups.
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