Pillar[5]arenes modified tetraphenylethylene as fluorescent chemosensor for paraquat detection was written by Kang, Zuzhe;Yang, Jiao;Jiang, Jingjing;Zhao, Li;Zhang, Yanrong;Tu, Qin;Wang, Jinyi;Yuan, Mao-Sen. And the article was included in Sensors and Actuators, B: Chemical in 2022.Application In Synthesis of 1-Bromopyrrolidine-2,5-dione This article mentions the following:
Pesticide pollution has become a severe challenge for harming food quality and human safety. Therefore, it′s urgent to develop sensitive methods to detect and analyze pesticides. Herein, we successfully developed a new turn-on fluorescent chemosensor (TPE-4P), a tetra-Ph ethylene derivative modified with four pillar[5]arenes, which could sensitively, selectively, and rapidly detect the pesticide paraquat. In our study, we took full advantage of both the host-guest strategy and aggregation-induced emission (AIE) to achieve fluorescent enhancement of the chemosensor for paraquat, in which four pillar[5]arenes as the recognition units can selectively capture paraquat. The formation of the supramol. complexes based on the interlaced host-guest interactions effectively restricted the intramol. single-bond rotation and skeletal vibration, resulting in the intensive fluorescent emission. The detection limit for paraquat was low enough to reach 154.1 nM, and the detection time was short enough to meet the rapid detection conditions. Moreover, the test strips loaded-TPE-4P facilitated the detection process and achieved the semi-quant. anal. for paraquat in real spiked samples. In addition, TPE-4P could respond to paraquat in living zebrafish obviously. These results suggest that the cooperation of host-guest and AIE chem. could become useful for the design to detect some appropriate organic mols. In the experiment, the researchers used many compounds, for example, 1-Bromopyrrolidine-2,5-dione (cas: 128-08-5Application In Synthesis of 1-Bromopyrrolidine-2,5-dione).
1-Bromopyrrolidine-2,5-dione (cas: 128-08-5) belongs to organobromine compounds. Bromo compounds are employed in a variety of metal-catalyzed coupling reactions. They are also ideal candidates for the synthesis of Grignard reagents that have wide-applicability in organic synthesis. alpha-Bromoesters are employed in the Reformatsky reaction for the synthesis of beta-hydroxyesters. When the molecular ion is detected, the bromine and chlorine isotope patterns are very distinct, but caution is to be exercised for certain mixed chlorinated/brominated compounds, which can look similar to homohalogen patterns.Application In Synthesis of 1-Bromopyrrolidine-2,5-dione
Referemce:
Bromide – Wikipedia,
bromide – Wiktionary