In a collaboration at the University of Chicago, chemistry students and artist Amanda Williams have successfully recreated a blue pigment patented by George Washington Carver in 1927. This effort involved adapting Carver's original method, which used iron-rich clay from Alabama, to create the vibrant color.
Amanda Williams discovered the patent while researching historical inventions and sought assistance from university chemists. She expressed enthusiasm for working with the students, saying, “The synergy of those brains and points of view overlapping constantly was really interesting to see along the process."
Carver’s patent outlined a complex procedure involving large quantities of concentrated acids. Ph.D. student Amanda Brewer and her team modified this process for safety and efficiency. They managed to produce the pigment using modern equipment like centrifuges, completing what originally took months in just hours.
The resulting pigment was identified as "Prussian blue," one of the first pigments achieved through modern chemistry. It was tested on various soil samples from different locations, all yielding similar results.
Sarah Thau, an undergraduate participant in the project, reflected on its impact: “It’s the best project I could have hoped for as an undergrad,” she said.
Williams has begun turning this pigment into paint with assistance from a German manufacturer that produced 100 pounds for her studio. The paint was showcased at last year’s New Orleans arts triennial Prospect.6 on buildings coated in Carver blue.
Williams continues exploring new artistic avenues with this pigment and recently opened an exhibition in New York City featuring works made with it. Reflecting on Carver's legacy, she stated: “George Washington Carver wanted to make sure knowledge extends itself... So it's been really nice that the project... embodies that at its elemental level.”