Selective recognition and extraction of arsenate by a urea-functionalized tripodal receptor from competitive aqueous media
作者:Sandeep Kumar Dey、Beatriz Gil-Hernández、Vivekanand V. Gobre、Dennis Woschko、Sarvesh S. Harmalkar、Firdaus Rahaman Gayen、Biswajit Saha、Rajib Lochan Goswamee、Christoph Janiak
DOI:10.1039/d2dt02281h
日期:——
A second-generation hydrogenbond donor (HBD) anion receptor with an inner amide cavity and an outer urea cavity can selectively and efficiently extract arsenate (AsO43−) from water in the presence of competitive oxoanions and halides. The X-ray structure showed encapsulation of AsO43− in a π-stacked dimeric capsular assembly of the receptor, the first crystallography-based example of pentavalent AsO43−