This page provides a summary of the various research
topics that are actively tackled in collaboration
with several other laboratories on and off the Boulder
Organic aerosols are emerging as a crucial and complex issue in
atmospheric science. In 1999, Ellison, Tuck, and Vaida proposed
a model for nascent marine aerosols. This inverted micelle
model for organic aerosols was extended into biology. Read more...
spectroscopy of organic anions
Electron Affinities (EAs) are measured by bombarding a target
ion, [R]-, with a light beam of known frequency
and monitoring the photodestruction of [R]- or
the appearance of the scattered electrons. Read more...
Optical spectroscopy of matrix
isolated organic radicals
Organic radicals play a crucial role as reactive intermediates in the
combustion chemistry of fossil fuels. We have recently developed a
hyperthermal nozzle, in which we produce radicals by flash pyrolysis.
Some of the radicals we have studied are:
Negative ion photoelectron spectroscopy is used to study the
spectroscopic and thermodynamic properties of organic radicals.
Bond dissociation energies of organic molecules are measured and
calculated. Read more...