IP Library › Granted Patent US 12,252,584
Granted Patent B2
US 12,252,584 · App. 17/560,983 · Granted Mar 18, 2025

Poly(aryl ether) based polymers and associated methods

Inventors: Timothy Manning Swager (Newton, MA); Richard Liu (Cambridge, MA); Sheng Guo (Brookline, MA)
Assignee: Massachusetts Institute of Technology
C08G65/48B01J23/44B01J31/06B01J35/615B01J35/617B01J37/12B01J37/16B01J37/341C08G65/40B01D71/522
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Quick Facts
Patent No.
US 12,252,584
App. No.
17/560,983
Granted
Mar 18, 2025
Kind
B2
Abstract

Compositions and methods related to the synthesis and application of poly(aryl ether)s are generally described.

Claims (13)

1. A photoredox catalyst, comprising:

a poly(aryl ether) of the formula [(—Ar′—O—Ar—O—Ar″—O-) n ] or [(—Ar″—O—Ar—O—Ar′—O-) n ], wherein Ar comprises at least one aryl or heteroaryl group, Ar′ comprises at least one aryl or heteroaryl group, Ar″ comprises a chromophore, n is greater than 1, and the poly(aryl ether) has a BET surface area greater than 200 m 2 /g.

2. The photoredox catalyst of claim 1 , wherein the poly(aryl ether) has a BET surface area less than or equal to 1000 m 2 /g.

3. The photoredox catalyst of claim 1 , wherein Ar′ comprises a spirobifluorene or an iptycene.

4. A method of photocatalysis, comprising:

exposing a photoredox catalyst to a substrate, wherein the photoredox catalyst comprises a poly(aryl ether) of the formula [(—Ar′—O—Ar—O—Ar″—O-) n ] or [(—Ar″—O—Ar—O—Ar′—O-) n ], wherein Ar comprises at least one aryl or heteroaryl group, Ar′ comprises at least one aryl or heteroaryl group, Ar″ comprises a chromophore, n is greater than 1, and the poly(aryl ether) has a BET surface area greater than 200 m 2 /g;

activating the photoredox catalyst; and

catalyzing a reaction of the substrate.

5. The method of claim 4 , wherein activating the photoredox catalyst comprises exposing the photoredox catalyst to light.

6. The method of claim 4 , wherein the reaction of the substrate is reduction of the substrate.

7. The method of claim 4 , wherein the reaction of the substrate is oxidation of the substrate.

8. The method of claim 4 , wherein the reaction of the substrate is a reaction between the substrate and a reactant.

9. The method of claim 4 , wherein the poly(aryl ether) has a surface area less than or equal to 1000 m 2 /g.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 3, 2022
From: SWAGER, TIMOTHY MANNING; LIU, RICHARD; GUO, SHENG
To: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
Reel/Frame 061290/0944 →
Continuity (3)
Provisional Application 63214501 · Jun 24, 2021
Provisional Application 63155697 · Mar 2, 2021
Related Publication 20220282042A1 · Sep 8, 2022
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