Boronic acids and their esters are highly popular synthetic intermediates in organic synthesis for their ease and efficiency of conversion to other functional groups, in metal-catalyzed cross-coupling reactions and for their unique biochemical activity.
In comparison with other porous materials, Covalent Organic Frameworks (COFs) have the advantage of low density, large surface area, tunable properties and functionality because of the versatile covalent bonds between organic building units made up of carbon, silicon, oxygen, boron and nitrogen only. The various fields of application leverage on specific characteristic properties of the framework. Gas separation and storage takes advantage of their large surface area and pore volume, they are used in optoelectronics because of the presence of out of plane π-interactions within 2D functionalized COFs, their use as heterogeneous catalysts is because they have inherent network of nanopores, energy storage devices take advantage of their large surface area while their diverse composition and synergistic function makes them invaluable in sensing devices. COFs have also found usefulness in the making of conductive membranes due to their tunable pores and exceptional stability in aqueous media. Inherent large surface area, tunable pores and adjustable functionality makes COFs very alluring candidates for drug delivery systems and separation / enrichment of small molecules.
Organoboron chemistry or organoborane chemistry ..
The scarcity and high cost of platinum-based electrocatalysts for the oxygen reduction reaction (ORR) has limited the commercial and scalable use of fuel cells. Heteroatom-doped nanocarbon materials have been demonstrated to be efficient alternative catalysts for ORR. Here, graphene quantum dots, synthesized from inexpensive and earth-abundant anthracite coal, were self-assembled on graphene by hydrothermal treatment to form hybrid nanoplatelets that were then codoped with nitrogen and boron by high-temperature annealing. This hybrid material combined the advantages of both components, such as abundant edges and doping sites, high electrical conductivity, and high surface area, which makes the resulting materials excellent oxygen reduction electrocatalysts with activity even higher than that of commercial Pt/C in alkaline media.