Virginia Section of the American Chemical Society
Virginia Commonwealth University
Refreshments available at 8:30 AM
January 25, 2019, Science Museum of Virginia, Richmond, VA
“Chemistry Among the Stars”
Professor Eric Herbst, University of Virginia
Stars and planets form from the collapse of portions of dense interstellar clouds, which are large assemblies of cold gas and dust (10 K) in interstellar space. The gas-phase is mainly molecular and contains many exotic species, including radicals, unusual isomers, and anions, most of which are organic in nature, while the dust particles, composed mainly of silicates or amorphous carbon, are the size of nanoparticles. The chemistry that produces these molecules from atomic precursors include both unusual gas-phase and solid-state reactions, some quite exotic. Although hydrogen is the dominant element and H2 the dominant gas-phase molecule, some organic molecules are very unsaturated and are labeled “carbon chains” by astronomers. The dust particles are covered with ices, mainly in the form of water, CO, and CO2. During the collapse, the material evolves through a number of stages starting with an isothermal era, followed by a warm-up during which the gas-phase molecular inventory changes from a mainly exotic one to one in which most organic molecules resemble standard laboratory solvents, albeit in the gas phase. Eventually a so-called protoplanetary disk is formed around the young star, and the disk can lead to the formation of planets via coagulation of the dust particles, with an initial molecular inventory at least partially determined by the chemistry that has already occurred.
2018 ACS VA Section Research Awards Nominations
To nominate individuals or teams, please submit the nomination form, a nominating cover letter with a detailed description of the research to be recognized (1000 word maximum but sufficient for understanding of the research or invention and its relevance), any pertinent references and patents, biographical sketch of the nominee(s), and any materials that relate to your nominee(s) or his/her product (brochures, reports, articles, etc.). The form is also available as a fillable PDF.
Nominations should be emailed to Kathleen Spangler (Kathleen.S.Spangler@altria.com) and Yezdi B. Pithawalla (firstname.lastname@example.org). The deadline for submitting nominations is January 15, 2019. The Awards ceremony will be held in March 2019.
Pittcon 2019 Conference,
March 18-21, 2019 in Philadelphia,Pennsylvania;
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