Abstract

Detection of ethanolamines (ETAs) is of great importance due to their harmful effects on human health and the environment. Herein, a simple turn-on aptasensor is designed for the sensitive and selective determination of ETA based on an aptamer-functionalized MIL-100 (Fe) (Apt-MIL-100) metal-organic framework (MOF) and Rhodamine B (RhB) as a fluorescence probe. It was found that the ETA molecule causes the release of RhB from Apt-MIL-100 (Fe) through selective binding with its aptamer. The fluorescence signal showed a linear relationship with ETA concentration in the range of 10-500 pM. This aptasensor showed successful application for ETA determination in wastewaters.

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