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.


August 21, 2020
Mark and Helen attended the first ever ACS virtual meeting! Mark presented at the celebratory symposium in honor of C. Bradley Moore, while Helen gave her talk at the “...
July 31, 2020
Kudos to Sean, Thien and Sayoni for holding a successful run of Pathways to Science! The high schoolers were able to link chemistry to their everyday lives, including...
June 2, 2020
The group marches on, Hollywood Squares style, through the quarantine with daily updates and lectures. Cheers to Fabian and Evan on the great news that their JCP paper on...

Selected Publications:

Deconstructing Water’s Diffuse OH Stretching Vibrational Spectrum with Cold Clusters

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

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

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