公开(公告)号：US20240151683A1

公开(公告)日：2024-05-09

申请号：US18382796

申请日：2023-10-23

Applicant: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS

Inventor： Xiao SU ,  Nayeong KIM ,  Johannes ELBERT

IPC: G01N27/333 ,  C08F130/04

CPC classification number: G01N27/333 ,  C08F130/04

Abstract: The design of electrochemically responsive halogen donors in redox-active polymer for switchable electrosorption and release of anions. A redox-active group such as ferrocene acts as an electron-withdrawing group, facilitating the delocalization of the electrons on the halogen atom. Upon the oxidation of the ferrocene moiety, the halogen atom forms a partial-positive charge (σ-hole) on the elongation of the C—I bond, resulting in strong binding with anions in cooperation with the hydrogen bonds on the cyclopentadienyl ring on the oxidized ferrocene. During reduction of ferrocene, halogen bonding is deactivated, releasing the bound anions reversibly.

公开(公告)号：US20240294685A1

公开(公告)日：2024-09-05

申请号：US18568609

申请日：2022-06-09

Applicant: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS

Inventor： Xiao SU ,  Haley VAPNIK ,  Johannes ELBERT

IPC: C08F230/04 ,  B01D15/20 ,  B01D15/36 ,  C02F1/42 ,  C02F101/20 ,  C09D143/00

CPC classification number: C08F230/04 ,  B01D15/203 ,  B01D15/362 ,  C02F1/42 ,  C09D143/00 ,  C02F2001/425 ,  C02F2101/20 ,  C02F2303/16

Abstract: Rare earth elements (REEs) play an essential role in our modern society, being critical resources for the growing electronic devices and renewable energy technologies. For the reversible capture and release of REEs, we designed and synthesized a redox-copolymer poly(ferrocenylpropyl methacrylamide-co-methacrylic acid) (P(FPMAm-co-MAA)) that combines an ion-exchange carboxylic acid group for REE adsorption, and an redox-active ferrocene moiety for electrochemical regeneration. By molecularly tuning the copolymer composition, efficient adsorption uptake could be achieved alongside electrochemically regenerated adsorbent reuse. The copolymer sorbent showed stoichiometric binding for yttrium (Y), cerium (Ce), neodymium (Nd), europium (Eu), gadolinium (Gd), and dysprosium (Dy) based on carboxylic acid active site.

公开(公告)号：US20240270611A1

公开(公告)日：2024-08-15

申请号：US18568009

申请日：2022-06-30

Applicant: The Board of Trustees of the University of Illinois ,  Kongju National University Industry-University Cooperation Foundation

Inventor： Xiao SU ,  Nayeong KIM ,  Johannes ELBERT ,  Choonsoo KIM

IPC: C02F1/469 ,  C02F1/461 ,  C02F101/30

CPC classification number: C02F1/4693 ,  C02F2001/46133 ,  C02F2101/30 ,  C02F2201/46135 ,  C02F2201/4618

Abstract: A system for redox-mediated electrodialysis includes: a first electrode; a second electrode positioned in opposition to the first electrode; an anion exchange membrane and a cation exchange membrane positioned between the first and second electrodes; a feed channel for flow of a treating fluid, the feed channel extending between the anion and cation exchange membranes; an additional membrane or pair of membranes between the first and second electrodes, the additional membrane or pair of membranes defining a collection channel on one or both sides of the feed channel for collecting anions and cations removed from the treating fluid, the additional membrane or pair of membranes including an anion exchange membrane and/or a cation exchange membrane; and a redox channel for flow of a redox fluid, the redox channel containing the first and second electrodes and being separated from the feed and/or collection channels by the anion and/or cation exchange membranes.

公开(公告)号：US20240132776A1

公开(公告)日：2024-04-25

申请号：US18376348

申请日：2023-10-03

Applicant: THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS

Inventor： Xiao SU ,  Jemin JEON ,  Johannes ELBERT

IPC: C09K11/06

CPC classification number: C09K11/06 ,  C09K2211/1425 ,  C09K2211/187

Abstract: Chiral redox-polymers that have been enabled for electrochemically-controlled enantioselective interactions. Supramolecular chirality was leveraged for enhancing recognition toward target enantiomers. Chiral redox-metallopolymers were synthesized based on Ugi's amine-inspired chiral monomers, and their enantioselective recognition toward ionic enantiomers, such as tryptophan and naproxen, is demonstrated, with higher enhancement provided by a chiral redox-polymer over a single-site, chiral building block. 2D nuclear magnetic resonance spectroscopy and solid-state circular dichroism support supramolecular chirality resulting from the intramolecular interaction between the ferrocene and the alkyl group in the backbone. The chiral redox-metallopolymers can be used as a platform for electrochemically-modulated enantioselective interactions toward a range of amino acids and pharmaceutical carboxylates.