This critical review will explore some of the recent research into the use of boron based anion receptors and focus on those receptors that have been designed to transduce the binding event into a measurable output signal. In particular the review will concentrate on optical chemosensors, where the signal produced is in the form of a colour or fluorescence change (116 references).
Reaction of 2-formyl-aryl-boronic acids with 1,2-amino alcohols results in dynamic covalent self assembly to quantitatively afford tetracyclic macrocyclic Schiff base boracycles containing bridging boron-oxygen-boron functionality.Scheme 1 Three-component protocol for determining the enantiomeric purity of chiral amines by 1 H NMR spectroscopic analysis.
Addition of chloride ions to boron bis(phenolate) 5 in dichloromethane solution produces a selective fluorescence decrease. The fluorescence change is believed to be caused by associative hydrogen bonding between the chloride ion and two boronic acid groups. While addition of fluoride ions to bis(phenolate) 5 generates a purple colorimetric response, the colorimetric response is caused by fluoride induced B-O bond cleavage and air oxidation of the phenolate anion formed by this dissociation.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.