About Our Group:

We design, build and exploit new types of instruments that provide qualitatively new pictures of how chemical reactions occur. By coupling mass-selective vibrational spectroscopy with cryogenic ion processing, we are able to study a wide variety of chemical phenomena, including small molecule activation, gas-liquid interfacial chemistry, and intracluster hydrogen bonding.


May 17, 2017
Congratulations to Tim Guasco (Ph.D. ‘11) for being awarded the 2017 Alpha Lambda Delta Teacher of the Year Award at Millikin University! This university wide award is given...
May 5, 2017
Dick Zare gives the first Johnson/Sessler Lecture on the Cinco de Mayo! This lectureship was made possible through the generosity of Jonathan Sessler, Welch Professor at the...
Mark Johnson at UC Berkeley
April 19, 2017
Mark is enjoying a spectacular visit to his alma mater, UC Berkeley, as a Visiting Miller Professor during April, 2017.  Many thanks to the Miller Institute for their...

Selected Publications:

Spectroscopic Snapshots of the Proton-transfer Mechanism in Water

Capture of CO2 by a Cationic NiI Complex in the Gas Phase and Characterization of the Bound Activated CO2 Molecule through Cryogenic Ion Vibrational Predissociation Spectroscopy

Modes of Activation of Organometallic Iridium Complexes for Catalytic Water and C-H Oxidation

Vibrational spectral signature of the proton defect in the three-dimensional H+(H2O)21 cluster