The New Haven Local Section of the
American Chemical Society held
a virtual version of its annual Student Research Symposium prompted
by the COVID-19 pandemic. A combination of YouTube, Google Drive,
Open Broadcaster Software, and Zoom was utilized to hold the symposium
which included juried oral and poster presentations. While our aim
was to preserve as much of the in-person experience as possible despite
the crisis, we found some very encouraging advantages to the virtual
format as we designed it. These included reduced presenter fatigue,
more substantive one-on-one interactions between student and senior
researchers, expanded accessibility for students, faculty, and the
general public, and the virtual symposium being a fraction of the
cost of an in-person symposium. The details of this experience and
advice for its application in the wider educational community are
reported.
The beneficial effects of the major classes of light stabilizers are reviewed from a theoretical perspective as well as through practical application examples. The use of UV absorbers, hindered amine light stabilizers, other stabilizer types, and combination systems to reduce aesthetic as well as physical property deterioration due to UV exposure is discussed. Continued research on both the theoretical and practical aspects of polymer light stabilization will provide the basis for the successful development of new UV‐stabilized plastics and coatings formulations.
ChemInform Abstract Coordination of the racemic, chiral ligand (VII) with iron yields the two possible diastereomeric complexes (IX) and (X). Complexation of the optically active ligand (XI), prepared on the same route as (VII) starting from optically active (S)-(I), produces the complex (XIII) as the sole diastereomer. The potential utility of these complexes in the asymmetric synthesis is demonstrated by the preparation of optically active (XV).
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