Monomers of Glycine and Serine Have a Limited Ability to Hydrate in the Atmosphere

The role of atmospheric aerosols on climate change is one the biggest uncertainties in most global models. Organic have been identified as potential cloud condensation nuclei (CCN), and amino acids are organic molecules that could serve CCN. Amino make up a significant portion total material atmosphere, herein we present systematic study hydration for two common acids, glycine serine. We compute DLPNO/CCSD(T)//M08-HX/MG3S thermodynamic properties concentrations Gly(H2O)n Ser(H2O)n, where n = 1-5. predict serine-water clusters higher at 1 5, while glycine-water 2-4. However, both serine inferred to exist primarily their nonhydrated monomer forms absence other species such sulfuric acid.