Poly(aryl ether) based polymers and associated methods

Patent metadata

Field	Value
Publication number	US-12252584-B2
Application number	US-202117560983-A
Country	US
Kind code	B2
Filing date	Dec 23, 2021
Priority date	Mar 2, 2021
Publication date	Mar 18, 2025
Grant date	Mar 18, 2025

Abstract

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

First claim

What is claimed is:

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.

Assignees

• Massachusetts Inst Technology

Inventors

• Swager Timothy Manning
• Liu Richard
• Guo Sheng

Classifications

• B01D71/522 Primary

  Aromatic polyethers · CPC title

• B01J37/341

  making use of electric or magnetic fields, wave energy or particle radiation (use of flames, plasma or lasers B01J37/349) · CPC title

• C08G65/40

  from phenols (I) and other compounds (II), e.g. OH-Ar-OH + X-Ar-X, where X is halogen atom, i.e. leaving group · CPC title

• B01J35/617

  500-1000 m2/g · CPC title

• B01J31/06

  containing polymers {(organometallic polymers B01J31/123; polymer-bound organometallic complexes B01J31/165; coordination polymers B01J31/1691)} · CPC title