Patent · US Active

Mechanically interlocked air-stable radicals

US10867718B2 · kind B2 · utility

1Cited by

3References

11Claims

0Family size

Assignee

Northwestern University · US

Inventors

Zhichang Liu · Evanston, US
Junling Sun · Albany, US
James Fraser Stoddart · Evanston, US

Key dates

Filing date	Jul 11, 2018
Grant date	Dec 15, 2020
Priority date	—
Expiry date	Jul 11, 2038

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC30B29/54
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Provided herein are mechanically interlocked air-stable persistent organic radicals. The radical compositions may access a multiplicity of radical, cationic redox states as well as a fully cationic redox state. A composition comprises a first ring mechanically interlocked with a second ring or a salt thereof, wherein the first ring comprises a 4,4′-bipyridinium subunit or a derivative thereof and a diazapyrenium subunit or a derivative thereof and the second ring comprises a 4,4′-bipyridinium subunit or a derivative thereof. In some embodiments, the second ring further comprises a diazapyrenium subunit or a derivative thereof. Methods of preparing the compositions are also provided.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.