Physical Chemistry Division present
PhysChem Webinar Series -1
1 July 2020 1-2pm AEST
Dr Christopher Hansen, ARC DECRA Fellow, UNSW - The true impact of fluorinated compounds in the atmosphere
Jyoti S. Campbell, Scott H. Kable, Christopher S. Hansen*
School of Chemistry, University of New South Wales, Sydney NSW 2052, Australia
This talk will present recent results using a combination of velocity-mapped ion imaging (VMI),
Fourier-transform infrared (FT-IR) spectroscopy and computational chemistry to provide detailed
insight into the ultimate fate of next-generation refrigerants once they are emitted into the
atmosphere. Particularly it will focus on one hydrofluoroolefin (HFO), HFO-1234ze or 1,3,3,3-
tetrafluoropropene (CHF=CH-CF3), and the photochemistry of its known decomposition product (trifluoroacetaldehyde, CF3CHO). The hydrofluoroolefins are intended as ‘zero global warming
potential (GWP)’ replacements for the hydrofluorocarbons (HFCs). However, these results
demonstrate significant photochemical pathways leading to the formation of the most
environmentally hazardous HFC, which is fluoroform (CHF3) with a global warming potential ~13 000
times worse than CO2 (by mass). These results re-evaluate the ‘effective’ GWPs of the ‘zero GWP’
refrigerants and can help account for an unidentified, increasing source of CHF3 in the atmosphere.
Dr Katie Wilson, ANU - Targeting the molecular motions of the BºAT1/ACE2/S1 complex for rational drug design
Katie Wilson and Megan O'Mara
The novel coronavirus SARS-CoV-2 is the causative agent of COVID-19 and has infected over 8 million people worldwide. SARS-CoV-2 gains entry to human cells in the respiratory and digestive tract by the coronavirus surface spike protein binding to the human receptor, ACE2. Frontline therapies that counteract the devastating effects of COVID-19 must prevent the entry of the coronavirus into human cells. Molecular dynamics simulations of the coronavirus surface spike protein bound to the human receptor complex provide information about the accessibility, stability and overall conformational dynamics of the SARS-CoV-2 receptor complex. This information is being used for rational drug design that aims to prevent SARS-CoV-2 from entering human cells.
Free for RACI and reciprocal society members - (Reciprocal society members - Contact email@example.com for further details)
$10 for Non-Members
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