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.


October 6, 2017
After three great months in the Johnson Lab, it’s finally time to give Steffen back to the Wester Group at the University of Innsbruck. Steffen was a huge help in...
October 1, 2017
Mark was pleased to give the Milton Kahn Lecture to the Chemistry Department at the University of New Mexico (https://news.unm.edu/news/yale-university-professor-to-present-...
September 19, 2017
The Johnson lab spent a beautiful night drinking wine and enjoying each others’ company outside of the lab at Paradise Hills Vineyard & Winery last week!

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