Experimental Physical ChemistrySupports experimental research directed at
the molecular level of understanding of the physical properties of
chemical systems. Experimental methodologies employed include frequency
domain and time domain spectroscopic techniques covering the entire range
of the electromagnetic spectrum, time-resolved dynamical studies of
state-selected and mass-selected systems, and reactive scattering in
molecular beams. Chemical systems studied range from single isolated
molecules or ions to clusters, liquids, and solids. Chemical properties of
interest include molecular structure and the shape of the ground and
excited electronic-state potential energy surfaces, chemical dynamics of
unimolecular and bimolecular chemical processes, time-resolved internal
energy redistribution and state-to-state dynamics in molecular systems,
and solute/solvent interactions in clusters and liquids. The program has
links to other programs within NSF tha
 t support chemistry research, including Atomic, Molecular, and Optical
Physics (Physics Division, MPS Directorate); Biophysics (Molecular and
Cellular Biosciences Division, BIO Directorate); Atmospheric Chemistry
(Atmospheric Sciences Division, GEO Directorate); and various programs in
the Materials Research Division (MPS Directorate).Theoretical and
Computational ChemistrySupports theoretical and computational research in
areas of electronic structure, statistical mechanics, computer
simulations, and chemical dynamics. The program also supports some areas
of experimental thermodynamics and condensed phase dynamics of chemical
systems that rely heavily on theoretical interpretation of experimental
data. Areas of application span the full range of chemical systems, from
small molecules to macromolecules; and degrees of aggregation, from
clusters to macroscopic systems. The goal of projects supported in this
program is to provide a molecular-level interpretation for chemical p
 roperties and reactivity. The program has links to other programs within
NSF that support chemistry research, including Atomic, Molecular, and
Optical Physics (Physics Division, MPS Directorate); Materials Theory
(Materials Research Division, MPS Directorate); Biophysics (Molecular and
Cellular Biosciences Division, BIO Directorate); and Advanced
Computational Research (Advanced Computational Infrastructure and Research
Division, CISE Directorate).