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UID:d026e992-7f1d-41db-8d34-7eb139122949@nexttoyou
DTSTAMP:20261106T171915Z
DTSTART:20261118T190000Z
DTEND:20261118T200000Z
SUMMARY:Thirty-Ninth Annual Frederick Kaufman Memorial Lecture Day 1
LOCATION:Chevron Science Center 150\, 219 Parkman Avenue\, Pittsburgh\, PA
  15260
DESCRIPTION:This year's Kaufman Memorial Lecture speaker is Prof. Mark Joh
 nson\, Yale University.\n\nTitle: Decoding the spectral signatures of “ex
 cess” proton speciation and transport kinetics in water with cryogenic io
 n chemistry and spectroscopy\n\nAbstract: Understanding the properties of
  protons released into water at the molecular level has proven to be surp
 risingly challenging. This occurs because the positively charged entity t
 hat is formed occurs with variable spatial extent surrounding a defect in
  the interlocking OH bonds that knit together the extended hydrogen bonde
 d network. This talk will describe how these local structures were captur
 ed and characterized using specially designed experimental methods to iso
 late the vibrational spectra of specific molecular compositions at very l
 ow temperature. These instruments integrate cryogenic ion trapping techni
 ques with mass spectrometry and laser spectroscopy. Once the structural i
 nformation encoded in cold ion spectra was established\, a second generat
 ion of experiments\, one that is currently on-going\, evolved that follow
  the kinetics of long-range proton migration\, mediated by a precisely co
 ntrolled number of water molecules. Simulations of this process\, now anc
 hored to experimental benchmarks\, provide a microscopic picture of the “
 proton relay” paradigm envisioned long ago by Grotthuss and widely invoke
 d to rationalize charge transport in aqueous media.\n\nBio: This year's s
 peaker will be Prof. Mark Johnson\, Arthur T. Kemp Professor of C\n\nhttp
 ://next-to-u.app/events/d026e992-7f1d-41db-8d34-7eb139122949
URL:http://next-to-u.app/events/d026e992-7f1d-41db-8d34-7eb139122949
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