Photochromic articles containing a polyoxometalate and methods of making and using same

US10711182B2 · kind B2 · utility

Assignee

• 3M INNOVATIVE PROPERTIES COMPANY · US

Inventors

• Adam D. Miller · Windom, US
• Daniel Isaacson · Maplewood, US
• Bert T. Chien · Okabena, US
• William Blake Kolb · Windom, US
• Matthew H. Frey · Maplewood, US
• Guanglei Du · Riverside, US

Key dates

• Filing date: Jun 23, 2016
• Grant date: Jul 14, 2020
• Expiry date: Jan 26, 2037

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K2211/183
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A photochromic article is provided, containing a structural component, a fluid in contact with the structural component, and a polyoxometalate complex in contact with the fluid. The polyoxometalate complex includes a counter cation complexed with either a polyoxometalate anion or a polyoxometalate derivative anion. The structural component includes a porous material, a plurality of cavities, or both. The article is photochromic. A method of changing a light transmission of a photochromic article is provided, as is a method of changing a light reflectance of a photochromic article. A method of forming a photochromic article is also provided.