Intramolecular Indicator Displacement Assay for Anions: Supramolecular Sensor for Glyphosate
摘要:
One of the well-known strategies for anion sensing is an indicator (dye) displacement assay. However, the disadvantage of the dye displacement assays is the low sensitivity due to the excess of the dye used. To overcome this setback, we have developed an "Intramolecular Indicator Displacement Assay (IIDA)". The IIDAs comprise a receptor and a spacer with an attached anionic chromophore in a single-molecule assembly. In the resting state, the environment-sensitive anionic chromophore is bound by the receptor, while the anionic substrate competes for binding into the receptor. The photophysical properties of the dye exhibit change in fluorescence when displaced by anions, which results in cross-reactive response. To illustrate the concept, we have prepared IID sensors 1 and 2. Here, the characterization of sensors and microtiter arrays comprising the IIDA are reported. The microtiter array including IID sensors 1 and 2 is capable of recognizing biological phosphates in water. The utility of the IIDA approach is demonstrated on sensing of a phosphonate herbicide glyphosate and other biologically important anions such as pyrophosphate in the presence of interferent sodium chloride.
[EN] DOUBLE SALT IONIC LIQUIDS OF HERBICIDES<br/>[FR] LIQUIDES IONIQUES À DOUBLE SEL D'HERBICIDES
申请人:UNIV ALABAMA
公开号:WO2016077290A1
公开(公告)日:2016-05-19
Disclosed are compositions and methods of preparing compositions of active herbicidal ingredients comprising two or more active herbicidal ingredients. Also disclosed are methods of using the compositions described herein to reduce herbicide resistance and minimize off-target movement. The present disclosure relates to compositions of herbicidal ionic liquids comprising one or more active herbicide ingredients and methods of making and using such ionic liquids. In some aspects, the herbicidal ionic liquids with multiple active herbicide ingredients can be prepared as separate ionic liquids, each with a single active, and later combined.