Universal scalable and cost-effective surface modifications

Patent metadata

Field	Value
Publication number	US-11084002-B2
Application number	US-201916404372-A
Country	US
Kind code	B2
Filing date	May 6, 2019
Priority date	Feb 21, 2013
Publication date	Aug 10, 2021
Grant date	Aug 10, 2021

Abstract

Disclosed are fouling resistant filtration membranes comprising a polymeric thin-film membrane comprising a surface. Also disclosed are methods of modifying thin-film filtration membranes, thereby improving, for example, the anti-fouling properties of the membranes. Also disclosed are methods of purifying water using the disclosed membranes. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

First claim

What is claimed is:

1. A compound having a structure represented by a formula:

wherein A is —C(═O)— and L is —OQ;
wherein Q is a structure represented by a formula:

wherein Z is —CR 6a R 6b —, —C(═O)—, —C(═NH)—, or —C(═NH)NR 7 —;
wherein each of R 1a and R 1b is independently hydrogen or halogen;
wherein each of R 2a and R 2b is halogen;
wherein each of R 4a and R 4b , when present, is independently hydrogen, halogen, —CN, —OH, —NR 8a R 8b , —NR 8a R 8b H + , C1-C4 alkyl, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, —SO 3 − , —SO 3 R 9 , —CO 2 − , or —CO 2 R 9 ;
wherein R 5a is —SO 3 − , —SO 3 R 9 , —CO 2 − , or —CO 2 R 9 ;
wherein each of R 5b and R 5c is independently hydrogen, halogen, —CN, —OH, —NR 10a R 10b , —NR 10a R 10b H + , C1-C4 alkyl, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, —SO 3 − , —SO 3 R 11 , —CO 2 − , or —CO 2 R 11 ;
wherein m is an integer selected from 0, 1, 2, 3, 4, 5, 6, 7, and 8;
wherein each of R 6a and R 6b , when present, is independently hydrogen, halogen, —CN, —OH, —NR 12a R 12b , —NR 12a R 12b H + , C1-C4 alkyl, C1-C4 monohaloalkyl, C1-C4 polyhaloalkyl, —SO 3 − , —SO 3 R 13 , —CO 2 − , or —CO 2 R 13 ;
wherein R 7 , when present, is hydrogen or C1-C4 alkyl;
wherein each of R 8a and R 8b , when present, is independently hydrogen or C1-C4 alkyl;
wherein R 9 , when present, is hydrogen or C1-C4 alkyl;
wherein each of R 10a and R 10b , when present, is independently hydrogen or C1-C4 alkyl;
wherein R 11 , when present, is hydrogen or C1-C4 alkyl;
wherein each of R 12a and R 12b , when present, is independently hydrogen or C1-C4 alkyl; and
wherein R 13 , when present, is hydrogen or C1-C4 alkyl.

2. The compound of claim 1 , wherein m is 0.

3. The compound of claim 1 , wherein m is an integer selected from 0, 1, 2, 3, and 4.

4. The compound of claim 1 , wherein Z is —CH 2 —or —C(═NH)NH—.

5. The compound of claim 1 , wherein the halogen is —F or —Cl.

6. The compound of claim 1 , wherein the halogen is —F.

7. The compound of claim 1 , wherein R 5a is CO 2 − , R 5b is —NH 3 + , and R 5c is hydrogen.

8. The compound of claim 1 , wherein R 5a is —CO 2 − , and each of R 5b and R 5c is hydrogen.

9. The compound of claim 1 , wherein the compound has a structure selected from:

10. The compound of claim 1 , wherein the compound has a structure selected from:

11. The compound of claim 1 , wherein the compound has a structure of:

Assignees

• Univ California

Inventors

• Hoek eric m
• Kaner Richard B
• Mcverry Brian T

Classifications

• B01D61/08 Primary

  Apparatus therefor · CPC title

• B01D67/00931

  by introduction of specific groups after membrane formation, e.g. by grafting · CPC title

• B01D71/76 Primary

  Macromolecular material not specifically provided for in a single one of groups B01D71/08 - B01D71/74 (rubbers in general B01D71/24) · CPC title

• B01D71/56

  Polyamides, e.g. polyester-amides · CPC title

• B01D2323/345

  UV-treatment · CPC title