Facile Phenylboronate Modification of Silica by a Silaneboronate

Abstract

Macroscopic and colloidal silica surfaces were readily modified with alkoxysilaneboronate, IV, yielding silica surfaces with covalently bonded phenylboronic acid groups. XPS and neutron activation confirmed the presence of boron. The ability of these surfaces to specifically interact with polyols was demonstrated with polyol-coated latex and ARS, a dye that specifically couples to boronic acid groups immobilized on colloidal or macroscopic silica. This is a new, direct approach for introduction of phenylboronic acid groups onto silica surfaces.

One-Step Preparation of Phenyl Boron-Modified Magnetic Mesoporous Silica for Selective Enrichment of cis-Diol-Containing Substances

“…PBSCP was prepared according to the literature [ 23 , 24 , 25 ]. Specifically, 0.95 g of 4—vinyl benzene boric acid pinacol ester and 300 ppm of Karstedt’s catalyst were dissolved in 5 mL of drying N , N -dimethylformamide (DMF).…”

One-step synthesis of boronic acid group modified silica particles by the aid of epoxy silanes

“…These results could prove that APBA was successfully modified on silica. Compared with the boron content of 0.25 mmol per gram of the boronic acid-substituted silica (boron content of the boronic acidsubstituted silica was 0.27% (w/w)) [11] and 0.039 mmol per gram of the boronic acid-substituted silica (corresponding to a boron content of the boronic acid-substituted silica was 0.042% (w/w) estimating by neutron activation analysis) [15], our one-step method implied a high loading amount of boronic acid functional groups.…”

“…At present, the boronic acid group modified silica synthesis was usually carried out with the aid of organosilane [5][6][7][8][9][10]. Two methods were widely applied, one was the "grafting first and then modification" [6,[11][12][13][14], the other was the "modification first and then grafting" [15][16][17]. In the first method, epoxy silane was grafted on the surface of silica.…”

Organoboron Derivatives of Stereoregular Phenylcyclosilsesquioxanes

“…For example, the weak interchain interactions of B−O or B−N moieties cause formation of a physical network resulting in changes in the rheological properties of polyborosiloxanes . It is worth noting separately that boric acid derivatives can be selectively bound to natural substrates, for example sugars, which allows such molecules to be used as biosensors or specific sorbents . We assume that combining a flexible siloxane framework with fragments of boric acid derivatives would allow one to create a new class of borosiloxane compounds.…”

“…[36] It is worth noting separately that boric acid derivatives can be selectively bound to natural substrates, for example sugars, [37][38][39] which allows such molecules to be used as biosensors or specific sorbents. [40][41][42] We assume that combining af lexible siloxane framework with fragments of boric acid derivatives would allow one to create an ew class of borosiloxane compounds.…”