title: Generating selective saccharide binding affinity of phenyl boronic acids by using single-walled carbon nanotube corona phases.
abstract: Saccharides recognition is challenging due to their low affinity for substrates, yet this recognition is critical for human immunity and glycobiology. Herein, we demonstrate that a polymer or surfactant corona phase surrounding a single-walled carbon nanotube can substantially modify the selectivity of pre-adsorbed phenyl-boronic acids (PBA) for mono-, di-, and poly-saccharides. A library of 17 PBAs including carboxy, nitro, and amino PBA with ortho-, meta-, or para- substitutions are used to generate 144 distinct corona phases. Six in particular demonstrate significantly increased selectivity to specific saccharides including ribose (0.42 mol per total mol), arabinose (0.36), and glucose (0.25), but unusually diminished binding to fructose (0.02). Recognition proceeds by saccharide adsorption into the corona, followed by PBA reaction in a consecutive second order reaction. The results extend to larger saccharides, such as glycosaminoglycans, suggesting promise for protein glycosylation.
authors: School for Engineering of Matter, Transport and Energy, Arizona State University, Phoenix, Arizona 85004 (US).
authors: Bin
authors: B
authors: Mu
authors: Jiyoung
authors: J
authors: Ahn
authors: Thomas P
authors: TP
authors: McNicholas
authors: Michael S
authors: MS
authors: Strano
mesh_terms: D001897:Boronic Acids / Q000737:chemistry* / Q000378:metabolism; D009005:Monosaccharides / Q000737:chemistry* / Q000378:metabolism; D037742:Nanotubes, Carbon / Q000737:chemistry*; D011134:Polysaccharides / Q000737:chemistry* / Q000378:metabolism; D013501:Surface-Active Agents / Q000737:chemistry
chemical_list: D001897:Boronic Acids; D009005:Monosaccharides; D037742:Nanotubes, Carbon; D011134:Polysaccharides; D013501:Surface-Active Agents; C010686:benzeneboronic acid
keywords: cophmores; molecular recognition; nanotubes; phenylboronic acid; sensors