K. R. A. Samankumara Sandanayake

Photo-induced electron transfer as a general design logic for fluorescent molecular sensors for cations

Abstract The reasons for the value of molecular fluorescence as a biosensing technique are outlined. The case of fluorescent sensors for cations is discussed with emphasis on a new general design logic employing the principle of photo-induced electron transfer.

Novel photoinduced electron-transfer sensor for saccharides based on the interaction of boronic acid and amine

Boronic acid derivative 1 displays a remarkable fluorescence enhancement over a large pH range in aqueous media upon the saccharide binding.

Recognition of sugars and related compounds by “reading-out”-type interfaces

Abstract INTRODUCTION The vast number and diversity of saccharides in nature are the ultimate challenge for the ‘Host-Guest’ Chemist. Two areas in particular have stimulated our interest:

A new benzo-annelated cryptand and a derivative with alkali cation-sensitive fluorescence

Abstract The fluorescence quantum yield of dibenzocryptand derivative (6) shows alkali cation-induced enhancements of up to 10 with virtually no other electronic spectral changes. (6) employs the alkali cation receptor module (5) which was designed to minimize proton basicity.

Fluorescent PET (photoinduced electron transfer) sensors for alkali cations: optimization of sensor action by variation of structure and solvent

Abstract The alkali cation-induced fluorescence enhancement of (1) is maximized to a factor of 45 when XCN (as opposed to CHNOH and H) and the solvent is 2-propanol (as opposed to mixtures with methanol).