Susumu Arimori

Fluorescent internal charge transfer (ICT) saccharide sensor

An efficient internal charge transfer (ICT) fluorescent saccharide sensor 3 has been prepared from 2-formyl benzeneboronic acid and aniline. When saccharides interact with sensor 3 in aqueous solution at pH 8.21 the emission maxima at 404 nm shifts to 362 nm.

A d-glucose selective fluorescent assay

A d-glucose selective competition assay has been devised using Alizarin Red S and diboronic acid 2 in buffered aqueous solution.

Tuning saccharide selectivity in modular fluorescent sensors

Abstract Five modular photoinduced electron-transfer (PET) sensors bearing two phenylboronic acid receptors with different fluorophores have been prepared. The sensors’ interaction with saccharides was assessed via fluorescence spectroscopy. It was shown that monosaccharide selectivity is influenced by the choice of fluorescent moiety.

A D-glucose selective fluorescent internal charge transfer (ICT) sensor

Abstract An efficient d -glucose selective internal charge transfer (ICT) fluorescent sensor has been prepared. When d -glucose is added to sensor 2 in aqueous solution at pH 8.21 the emission maximum at 405 nm shifts to 360 nm.

Modular fluorescence sensors for saccharides

Modular and modular polymer supported fluorescence photoinduced electron transfer (PET) sensors 2 and 3 with two boronic acid receptor units, a pyren-1-yl fluorophore, and hexamethylene linker show selective saccharide binding in aqueous methanolic solution at pH 8.21.

Synthesis and structural characterisation of the first bis(bora)calixarene: a selective, bidentate, fluorescent fluoride sensorElectronic supplementary information (ESI) available: synthetic and spectroscopic details for the preparation of 3; details of the fluorescence titration of 3 with F? including details on the procedure used for calculation of binding constants; and details of the crystal structure refinement. See http://www.rsc.org/suppdata/cc/b4/b404937c/

A bis(bora)calixarene 3, the first lower-rim boron derivatised calixarene to be structurally characterised, is synthesised by the reaction of PhBCl2 with 4-tert-butylcalix[4]arene, and is demonstrated to be a sensitive and selective fluorescent fluoride sensor.

Non-linear effects operate and dynamic ligand exchange occurs when chiral BINOL–boron Lewis acids are used for asymmetric catalysis

Abstract Non-linear effects reveal that the use of chiral BINOL–boron reagents for aza-Diels–Alder reactions results in an enantioselective catalytic species containing at least 2 equiv. of BINOL. Dynamic ligand exchange and ligand accelerated catalysis occurs in these reactions, consistent with the formation of a cyclic borate ester of BINOL with enhanced Lewis acidity.

‘Tailored’ polymers for supported syntheses using boronic acids☆

A diethanolamine pendant polystyrene polymer was prepared by the copolymerization of diethanolaminomethyl styrene, styrene, and divinylbenzene. The composition of the polymer resins produced agreed with copolymerization starting ratios. The polymer resins readily immobilized phenylboronic acid in THF and released pure phenylboronic acid quantitatively in THF/water/acetic acid.

A modular electrochemical sensor for saccharidesElectronic supplementary information (ESI) available: observed DPV for 3???+???4 and 5. See http://www.rsc.org/suppdata/cc/b2/b207643h/

A modular electrochemical saccharide sensor using ferrocene has been prepared which contains two boronic acid receptor groups and hexamethylene linker.

A competition assay for diols using 9-(N,N-diethanolaminomethyl)anthracene and phenylboronic acid

9-(N,N-Diethanolaminomethyl)anthracene and phenyl boronic acid can be used in a competition assay for diols in chloroform.