Boronic acids polymer self-assembly

Polymer Self-Assembly Mediated by Boronic Acid... 

Shinkai (65) exploited the boronic acid-diol motif mentioned above to self-assemble a polymer based on pyridine-magnesium porphyrin interactions. In this case, the evidence for polymerization comes from lightscattering experiments in dilute solution which yielded an average molecular weight of 109 g mol-1 for this system. 

The interaction of boronic acids with saccharides " and anions has been extensively investigated, and boronic acids have also been exploited in a range of applications as diverse as sensing and separation, " NMR (nuclear magnetic resonance) shift reagents, functional polymers for electrophoresis, and molecular self-assembled capsules and materials. 

Sarson et al. combined two kinds of reversible interactions, namely, boronic acid-diol and metal-pyridine interactions, to generate self-assembled polymers. A1 2 mixture of magnesium dicatechol porphyrin 41 and pyridine-3-boronic acid self-assembles into a polymer. The molecularweightwas estimated to be 10 by light scattering measurements. 

Shinkai and Kanekiyo discuss the development of boronic acid-based supra-molecular systems. Supramolecular systems discussed include sugar-responsive gels, porphyrin-boronic acid, systems that exhibit guest-induced spectroscopic changes, two-dimensional self-assembly at the air-water interface, boronic acid-functionalized metal nanoparticles and boronic acid-appended polymers. 

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