After completing his postdoctoral fellowships, Martínez joined the faculty at the
University of Illinois in 1996. He was named a Gutgsell Professor of Chemistry at the University of Illinois in 2006. He joined the Stanford faculty in 2009. Martínez was appointed a co-
editor of the
Annual Review of Physical Chemistry in 2012 and is credited in issues from 2014 to 2025. Professor Martínez is a
theoretical chemist whose research focuses primarily on developing first-principles approaches to chemical reaction dynamics, starting from the fundamental equations of
quantum mechanics. He is particularly interested in electronically excited states and the response of molecules to light. Reactions of electronically excited molecules often involve
conical intersections, around which the potential energy surfaces have the shape of intersecting cones. He developed a method known as
ab initio multiple spawning, or AIMS, which predicts the dynamic evolution of systems having conical intersections. The computational methods Martínez developed while observing nonadiabatic chemical reactions attempts to predict the direction and shape molecules take on during the process. One scenario created by Dr. Martínez focuses on
photoisomerization. He has created models for photoinduced
isomerization in
retinal, which represents the biophysical basis for vision. He has also shown how videogame hardware, especially graphical processing units (GPUs), can be used to accelerate quantum chemistry simulations. Martínez's research has been supported by an
NSF Career Award, a
MacArthur Foundation Fellowship, a Packard Foundation Fellowship, a Sloan Foundation Fellowship, a
Beckman Young Investigators Award, a Research Innovation Award, a Dreyfus Teacher-Scholar Award, and grants from the
NSF,
DOE,
NIH, Research Corporation, and the
Human Frontier Science Program (HFSP). He was elected to the American Academy of Arts & Sciences in 2011 and to the National Academy of Sciences in 2019. In 2021 Martinez received the
Remsen Award. ==Representative publications==