公开(公告)号：US20210033561A1

公开(公告)日：2021-02-04

申请号：US16684285

申请日：2019-11-14

Applicant: Rosemount Inc. ,  Regents of the University of Minnesota

Inventor： Xin Chen ,  Jinbo Hu ,  Philippe Buhlmann

IPC: G01N27/333 ,  B01D69/10 ,  B01D67/00 ,  B01D61/48 ,  B01D71/82 ,  B01D71/40

Abstract: An electrochemical sensor with an ion-selective membrane that comprises a crosslinked alkyl methacrylate homopolymer or copolymer of two or more alkyl methacrylates 1. with a covalently attached electrically neutral or electrically charged ionophore that is selective for a target cation or anion, or 2. with a covalently attached cationic or anionic ionic site, or 3. with a covalently attached cationic or anionic ionic site and covalently attached electrically neutral or electrically charged ionophore

公开(公告)号：US11573194B2

公开(公告)日：2023-02-07

申请号：US17095426

申请日：2020-11-11

Applicant: Regents of the University of Minnesota

Inventor： Xin Chen ,  Andreas Stein ,  Philippe Buhlmann

IPC: G01N27/30

Abstract: Reference electrodes that include a solid electron conductor; an interlayer; and a polymeric membrane layer comprising a polymer composition, the polymer composition comprising at least one silicone-containing polymer and at least one ionic liquid, wherein the polymeric membrane layer and the polymer composition are essentially plasticizer free and the silicone-containing polymer and the ionic liquid are miscible as determined using a thermodynamic method that shows a single glass transition temperature (Tg) of a composition including the at least one silicone-containing polymer and the at least one ionic liquid, wherein the interlayer is disposed between the solid electron conductor and the polymeric membrane layer. Also disclosed are electrochemical measurement systems including such reference electrodes.

公开(公告)号：US20210140910A1

公开(公告)日：2021-05-13

申请号：US17095426

申请日：2020-11-11

Applicant: Regents of the University of Minnesota

Inventor： Xin Chen ,  Andreas Stein ,  Philippe Buhlmann

IPC: G01N27/30

Abstract: Reference electrodes that include a solid electron conductor; an interlayer; and a polymeric membrane layer comprising a polymer composition, the polymer composition comprising at least one silicone-containing polymer and at least one ionic liquid, wherein the polymeric membrane layer and the polymer composition are essentially plasticizer free and the silicone-containing polymer and the ionic liquid are miscible as determined using a thermodynamic method that shows a single glass transition temperature (Tg) of a composition including the at least one silicone-containing polymer and the at least one ionic liquid, wherein the interlayer is disposed between the solid electron conductor and the polymeric membrane layer. Also disclosed are electrochemical measurement systems including such reference electrodes.

公开(公告)号：US11567030B2

公开(公告)日：2023-01-31

申请号：US16684285

申请日：2019-11-14

Applicant: Rosemount Inc. ,  Regents of the University of Minnesota

Inventor： Xin Chen ,  Jinbo Hu ,  Philippe Buhlmann

IPC: G01N27/333 ,  B01D61/48 ,  B01D67/00 ,  B01D69/10 ,  B01D71/40 ,  B01D71/82

Abstract: An electrochemical sensor with an ion-selective membrane that comprises a crosslinked alkyl methacrylate homopolymer or copolymer of two or more alkyl methacrylates
1. with a covalently attached electrically neutral or electrically charged ionophore that is selective for a target cation or anion, or
2. with a covalently attached cationic or anionic ionic site, or
3. with a covalently attached cationic or anionic ionic site and covalently attached electrically neutral or electrically charged ionophore.