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Nobel Chemist Rudy Marcus Dies at 102; Theory Fuels Li-Ion

7/18/2026

Summary

Rudy Marcus Dies

Rudolph “Rudy” Marcus, a Caltech professor, died at age 102.
He won the 1992 Nobel Prize in Chemistry and, in the 1950s, formulated the Marcus equation that predicts an inverted region where driving force slows reactions.
Argonne National Laboratory experimentally confirmed the inverted region in 1984 using a rigid molecular framework.
Engineers and solar designers use Marcus theory to speed lithium-ion charging, cut heat, and boost efficiency by suppressing recombination.

Summary

Marcus Center Opens

Caltech opened the Rudolph A. Marcus Center for Theoretical Chemistry in 2024, funded by alumni donors.
Rudolph A. Marcus (born July 21, 1923 in Montreal) earned a B.Sc. (1943) and Ph.D. (1946) from McGill, completed postdoctoral work at UNC and married Laura Hearne, taught at Caltech from 1978 until age 95.
He is survived by three sons, their spouses, four grandchildren, a great-grandson, colleague Maria-Elizabeth Michel-Beyerle, and wife Laura Hearne, who died in 2003.

History

Historical Context

In 1956 Rudolph A. Marcus formulated a theory predicting an ‘inverted region’ where electron-transfer rates decline with increasing driving force. After three decades of failed searches, Argonne National Laboratory and the University of North Carolina confirmed the effect in 1984, measuring a 30 % rate slowdown. The 2024 Caltech Marcus Center now leverages that theory to accelerate lithium-ion charging and reduce heat in solar devices.

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Rudy Marcus Dies

Rudolph “Rudy” Marcus, a Caltech professor, died at age 102.
He won the 1992 Nobel Prize in Chemistry and, in the 1950s, formulated the Marcus equation that predicts an inverted region where driving force slows reactions.
Argonne National Laboratory experimentally confirmed the inverted region in 1984 using a rigid molecular framework.
Engineers and solar designers use Marcus theory to speed lithium-ion charging, cut heat, and boost efficiency by suppressing recombination.

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