Fluoride‐Ion Encapsulation within a Silsesquioxane Cage

Abstract

The encapsulation of a fluoride ion in an octaphenylsilsesquioxane cage is described by A. Bassindale, P. G. Taylor, and co-workers on the following pages. Viewed from above, the fluoride ion is shown to reside at the center of the cage, rather like the bird depicted; a tetrabutylammonium counterion is located between the phenyl groups of the cage.

Aminobenzohydrazide based colorimetric and ‘turn-on’ fluorescence chemosensor for selective recognition of fluoride

“…Receptors based on NH and OH deprotonation or hydrogen bond formation by fluoride ion [38][39][40][41] failed to report the selectivity of F -ion over the other competitive anions. CN -is the main interference in fluoride sensor due to their similar basicity and surface charge density [42,43].…”

An Efficient Approach to Monophenyl‐Functionalized Octasilsesquioxanes

“…[13,14] The incorporation of cages into polymers produces nanocomposites with improved properties such as glass transition temperature, mechanical strength, thermal and chemical stability, and ease of processing. [15][16][17][18] Early in the development of silsesquioxane chemistry, Feher and co-workers discovered that incompletely condensed cages with the formula R 7 Si 7 O 9 (OH) 3 (R = iBu, Ph, Me, cHex, cyclopentyl, etc.)…”

Hydrogen adsorption on Ti containing organometallic structures grafted on silsesquioxanes

“…Because of the special chemistry and functionalities of cyclic C n H n structures, researchers are very much interested in grafting C n H n structures on SQ structure. Some groups have studied octaphenylsilsesquioxane ((C 6 H 5 ) 8 Si 8 O 12 ) and the derivatives of cta-(aminophenyl) silsesquioxane and octa-(nitrophenyl) silsesquioxane in the experiments [22][23][24][25][26][27][28][29]. Recently, using hydrosilation or thermal methods, some authors have studied the complex structures of cyclopentadienyl grafted SQ [30][31][32].…”