An easy assembled fluorescent sensor for dicarboxylates and acidic amino acids

Abstract

SummaryTwo mesitylene based neutral receptors 1 and 2 bearing two thiourea binding sites were constructed as fluorescent probes for sensing dicarboxylates. Their binding affinities toward dicarboxylates, aspartate and glutamate have been investigated in acetonitrile solution by fluorescence titration experiments. Both fluorescent sensors exhibited some ability to discriminate the antipodal forms of aspartate and glutamate.

Recent progress in fluorescent and colorimetric chemosensors for detection ofamino acids

“…40). 55 Operating on the PET mechanism, the fluorescent emission band of the host at 413 nm was quenched gradually upon the addition of the guest. As revealed by the respective association constants, sensor 84 showed the highest affinity to isophthalate (K a = (6.25 AE 0.61) Â 10 4 M À1 ) in acetonitrile.…”

Recent Advances in Development of Chiral Fluorescent and Colorimetric Sensors

“…Unique excimer bands in the fluorescence spectra were observed in the case of 1:1 complexes; however, this type of emission is absent In 2011, Chan and co-workers continued their interest in this research direction and reported two new sensing probes 81 and 82 (Figure 36). 105 Operating on the PET mechanism, the host fluorescence emission band at 413 nm was quenched gradually upon the addition of the guest. As revealed by the respective association constants, sensor 81 showed the highest affinity to isophthalate (K a = (6.25 ± 0.61) × 10 4 M −1 ) in ACN.…”

The first fluorescent sensor for medium-chain fatty acids in water: design, synthesis and sensing properties of an organic–inorganic hybrid material

“…Organic carboxylic acids are one kind of basic building block for many natural products, biological molecules and drugs, and searching for their effective molecular sensors has been an active topic in the last few decades. Many sensor molecules have been created for aromatic and short-chain (mono-or di-) carboxylic acids or their anions, [25][26][27][28][29][30][31][32][33][34][35] and two papers concerning the selective uorescent discrimination of long-chain (fatty) carboxylates in water have also been reported. 20,21 However, to date, no sensor has yet been reported for medium-chain fatty acids.…”