Construction of Hybrid Porous Materials from Cubic Octavinylsilsesquioxane through Friedel–Crafts Reaction Using Tetraphenylsilane as a Concentrative Crosslinker

Abstract

A series of novel hybrid porous polymers (HPPs), derived from cubic octavinylsilsesquioxane (OVS; [(C2H3SiO1.5)8]) and tetraphenylsilane (TPS), were successfully synthesized through Friedel–Crafts alkylation reaction. The porosities of the HPPs could be tuned by modulating the molar ratio of OVS and TPS. The HPPs showed high porosity, with Brunauer–Emmett–Teller specific surface areas of 518–989 m2 g–1, and total pore volumes of 0.35–0.76 cm3 g–1, as well as narrow pore‐size distributions. For gas sorption application, HPP‐5 possessed a hydrogen uptake of 0.80 wt.‐% at 760 Torr/77 K and a carbon dioxide uptake of 3.31 wt.‐% at 760 Torr/298 K.

Construction of bimodal silsesquioxane-based porous materials from triphenylphosphine or triphenylphosphine oxide and their size-selective absorption for dye molecules

“…HP-TPPs and HP-TPPOs, respectively, as shown in Scheme 3. 30,32,33 The symmetric stretching vibrations of P]O at 1187 cm À1 (Fig. These hybrid porous polymers were rst characterized by FTIR spectroscopy.…”

“…[22][23][24][25][26][27][28][29] Recently, many hybrid porous polymers were prepared via the topology combination from cubic OVS with planar molecules, 30 tetrahedral molecules, 31,32 cubic molecules [33][34][35][36] and polymer. [22][23][24][25][26][27][28][29] Recently, many hybrid porous polymers were prepared via the topology combination from cubic OVS with planar molecules, 30 tetrahedral molecules, 31,32 cubic molecules [33][34][35][36] and polymer.…”

Hybrid nanoporous polystyrene derived from cubic octavinylsilsesquioxane and commercial polystyrene via the Friedel–Crafts reaction

“…According to the previous reports, traditional hypercrosslinking porous polystyrenes were prepared by the precursor of linear polystyrene through adding small molecule of divinyl benzene as a crosslinking agent via the Friedel-Cras alkylation reaction. 39 The rigid cage makes it a potential nanobuilding block to form porous materials via the stacking of POSS cages. The polymeric chains extended through the whole initial solution (or gel) and remained strongly solvated over all period of network formation.…”

“…[23][24][25] As a silica-like cage compound, polyhedral oligomeric silsesquioxane (POSS) provides an excellent platform for synthesis of new inorganicorganic hybrid materials with enhanced thermal and mechanical properties. 38,39 It was observed that S BET increased with the increasing reactive sites of benzene, i.e. These hybrid polystyrene based on POSS exhibited the improved thermal stabilities, 27,28 viscoelastic properties, 29,30 magnetic properties 31 compared to the pristine polystyrene.…”

“…These hybrid polystyrene based on POSS exhibited the improved thermal stabilities, 27,28 viscoelastic properties, 29,30 magnetic properties 31 compared to the pristine polystyrene. 39 Covalently-linked porous polymers have been investigated widely, however most porous polymers arose from small building blocks. Results showed that the octaphenethyl POSS could be incorporated into polystyrene up to 40 wt% without phase separation.…”