Sunney Chan

This article is about the American biophysical chemist. For the Hong Kong actor, see Sunny Chan.

Sunney Ignatius Chan
Chan in 2021
Born	(1936-10-05)October 5, 1936 San Francisco, California, U.S.
Died	May 5, 2025(2025-05-05) (aged 88) Taipei, Taiwan
Nationality	American
Known for	Use of NMR on biological systems Interactions of Cytochrome c oxidase
Awards	Guggenheim Fellow (1968) William C. Rose Award (2004)
Academic background
Alma mater	University of California, Berkeley (BS, PhD)
Thesis	The nature of the ring puckering vibration and its effects on the far-infrared and microwave spectra of trimethylene oxide (1961)
Doctoral advisor	William Dulaney Gwinn
Other advisors	Norman Foster Ramsey Jr. (post doc advisor)
Academic work
Discipline	Biophysical chemistry
Institutions	University of California, Riverside California Institute of Technology Academia Sinica National Taiwan University National Chung Hsing University
Doctoral students	Utpal Banerjee Michael Sheetz

Sunney Ignatius Chan (Chinese: 陳長謙; (Chén Zhǎngqiān) October 5, 1936 – May 5, 2025) was an American biophysical chemist. His work primarily focused on the use of various magnetic resonance spectroscopic and other physical chemical techniques in the analysis of various biochemical and biological problems.

Early life and education

Chan was born on October 5, 1936, in San Francisco to immigrant parents originally from Southern China. He received secondary education in Hong Kong, returning to the United States to attend the University of San Francisco. Shortly afterwards, he transferred to the University of California, Berkeley, where he earned a bachelor's and doctoral degree in chemistry. He completed his doctoral work under the supervision of physical chemist William Dulaney Gwinn and was awarded his PhD in 1961.

Career

After receiving his doctorate, Chan completed a one-year post-doctoral fellowship in the laboratory of the Nobel laurate physicist Norman Ramsey at Harvard University and later returned to California to join the chemistry faculty at University of California, Riverside. He began teaching at the California Institute of Technology in 1963. Five years later, he was awarded a Guggenheim fellowship. Chan received several honors throughout his career at Caltech, among them fellowship into the American Physical Society (1987) and American Association for the Advancement of Science (1992), as well as membership of Academia Sinica (1988). He was appointed Caltech's first George Grant Hoag Professor of Biophysical Chemistry in 1992. Chan retired from Caltech in 1997, for a position as distinguished research fellow at Academia Sinica. Subsequently, Chan was named vice president of Academia Sinica under Yuan T. Lee. Caltech granted emeritus status to Chan in 2002. Upon Chan's retirement as vice president of Academia Sinica in July 2003, Lee inaugurated the Sunney Chan Lecture in Chan's honor. He remained affiliated with Academia Sinica as a research and visiting fellow until 2015. In his later career, Chan held distinguished chair and research professorships at National Taiwan University and National Chung Hsing University.

Death

Chan died May 5, 2025, at the age of 88.