title: New mono- and diethynylsiloxysilsesquioxanes--efficient procedures for their synthesis.
abstract: Ethynyl-substituted siloxysilsesquioxanes are promising building blocks for a wide range of substances based on a POSS/DDSQ core, especially for (oligo-)polymer syntheses and modifications (the formation of hybrid materials with interesting photophysical and mechanical properties). In this study, we report on a series of new mono- and diethynylsiloxysilsesquioxanes formed via an efficient and highly selective one-pot process from silsesquioxanes with reactive Si-OH groups based on sequential condensation, hydrolysis, chlorination and substitution reactions. All newly synthesized compounds were isolated and characterized by spectroscopic methods.
authors.affiliation: Department of Organometallic Chemistry, Faculty of Chemistry, Adam Mickiewicz University, Umultowska 89b, 61-614 Poznan, Poland. beata.dudziec@gmail.com.
authors.forename: Beata
authors.initials: B
authors.lastname: Dudziec
authors.forename: Monika
authors.initials: M
authors.lastname: Rzonsowska
authors.forename: Bogdan
authors.initials: B
authors.lastname: Marciniec
authors.forename: Dariusz
authors.initials: D
authors.lastname: Brząkalski
authors.forename: Bartosz
authors.initials: B
authors.lastname: Woźniak