George Claude Pimentel (May 2, 1922 – June 18, 1989) was a preeminent chemist and researcher. He was also dedicated to science education and public service. the inventor of the chemical laser. He developed the technique of matrix isolation in low-temperature chemistry. He also developed time-resolved infrared spectroscopy to study radicals and other transient species. In the late 1960s, Pimentel led the University of California team that designed the infrared spectrometer for the Mars Mariner 6 and 7 missions that analyzed the surface and atmosphere of Mars.
He was a passionate and popular teacher of first-year chemistry for his entire career. 
In science education, he was best known for the [https://archive.org/details/chemstudystory00merr/page/n7/mode/2up CHEM STUDY project], a national effort to improve high-school chemistry teaching. He participated in the production of films and other supplementary materials and in the training of teachers nationwide. Later, in 1985, he organized and edited the National Academy of Sciences' "Pimentel Report," formally known as [https://nap.nationalacademies.org/catalog/606/opportunities-in-chemistry Opportunities in Chemistry], which highlighted the most important challenges in chemistry at that time. It was a resource for general public including lawmakers. A revised version, [https://nap.nationalacademies.org/catalog/1884/opportunities-in-chemistry-today-and-tomorrow Opportunities in Chemistry Today and Tomorrow], was used worldwide for high school and college students. 
An alumnus of University of California, Los Angeles (B.S. 1943) and University of California, Berkeley (Ph.D. 1949), Pimentel began teaching at Berkeley in 1949, where he remained until his death in 1989 from intestinal cancer, with a three year appointment as Deputy Director at the National Science Foundation under the Carter administration in Washington, D.C..