TY - JOUR
T1 - Removal of Anions from Aqueous Media by Means of a Thermoresponsive Calix[4]pyrrole Amphiphilic Polymer
AU - Ji, Xiaofan
AU - Guo, Chenxing
AU - Chen, Wei
AU - Long, Lingliang
AU - Zhang, Gengwu
AU - Khashab, Niveen M.
AU - Sessler, Jonathan L.
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): CRG6 2017 3503
Acknowledgements: This work was supported by the King Abdullah University of Science and Technology (grant CRG6 2017 3503). Further support from the Robert A. Welch Foundation (F-0018) is acknowledged.
PY - 2018/9/27
Y1 - 2018/9/27
N2 - To address the challenge of removing unwanted anions from aqueous media under extraction-free conditions we have prepared a thermoresponsive amphiphilic polymer with pendent calix[4]pyrrole (C4P) receptors. Because of its amphipathicity, this polymer self-assembles into micelles in water. These micelles contain the C4P receptors buried in a hydrophobic core. This allows uptake of various cesium anions into the micelles. Due to the thermal- responsiveness of the hydrophilic block chain, the anion-bearing micelles precipitate in water upon heating. Simple filtration allows their removal from the aqueous environment, thus allowing for effective water purification. Treating the anion-trapped micelles with acidic aqueous solution leads to the competition-induced release of the bound anion and thus recycling the polymeric material.
AB - To address the challenge of removing unwanted anions from aqueous media under extraction-free conditions we have prepared a thermoresponsive amphiphilic polymer with pendent calix[4]pyrrole (C4P) receptors. Because of its amphipathicity, this polymer self-assembles into micelles in water. These micelles contain the C4P receptors buried in a hydrophobic core. This allows uptake of various cesium anions into the micelles. Due to the thermal- responsiveness of the hydrophilic block chain, the anion-bearing micelles precipitate in water upon heating. Simple filtration allows their removal from the aqueous environment, thus allowing for effective water purification. Treating the anion-trapped micelles with acidic aqueous solution leads to the competition-induced release of the bound anion and thus recycling the polymeric material.
UR - http://hdl.handle.net/10754/628505
UR - https://onlinelibrary.wiley.com/doi/abs/10.1002/chem.201804335
UR - http://www.scopus.com/inward/record.url?scp=85053853121&partnerID=8YFLogxK
U2 - 10.1002/chem.201804335
DO - 10.1002/chem.201804335
M3 - Article
C2 - 30152899
SN - 0947-6539
VL - 24
SP - 15791
EP - 15795
JO - Chemistry - A European Journal
JF - Chemistry - A European Journal
IS - 59
ER -