BEGIN:VCALENDAR
VERSION:2.0
PRODID:icalendar-ruby
CALSCALE:GREGORIAN
METHOD:PUBLISH
BEGIN:VTIMEZONE
TZID:Europe/Vienna
BEGIN:DAYLIGHT
DTSTART:20190331T030000
TZOFFSETFROM:+0100
TZOFFSETTO:+0200
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=3
TZNAME:CEST
END:DAYLIGHT
BEGIN:STANDARD
DTSTART:20191027T020000
TZOFFSETFROM:+0200
TZOFFSETTO:+0100
RRULE:FREQ=YEARLY;BYDAY=-1SU;BYMONTH=10
TZNAME:CET
END:STANDARD
END:VTIMEZONE
BEGIN:VEVENT
DTSTAMP:20260404T064753Z
UID:5c8a66cc245b7699794690@ist.ac.at
DTSTART:20190412T110000
DTEND:20190412T120000
DESCRIPTION:Speaker: Jonathan de Roo\nhosted by Maria Ibanez\nAbstract: Col
 loidal nanocrystals are hybrid objects in which the properties of core and
  surface both determine the characteristics of the entire nanocrystal. The
  surface is often capped by (in)organic ligands which determine colloidal 
 stability and the physical and chemical properties. As a result\, nanocrys
 tal surface chemistry\, i.e.\, the understanding of and control over the l
 igand shell\, has become one of the central themes in nanocrystal research
 . Here\, we study the organic ligands through solution and solid state NMR
  spectroscopy. I will first explain the various NMR tools which provide in
 formation specific to nanocrystal surfaces. I will also elaborate on the o
 rigin of the NMR line broadening of nanocrystal-bound ligands. To illustra
 te the usefulness of the NMR toolbox\, we will work through several case s
 tudies on a variety of nanocrystal types. For example\, we will discuss th
 e dynamic nature of ligands on CsPbBr3 perovskite nanocrystals\, and the b
 inding motif for dissociated carboxylic acids on metal oxide nanocrystals.
  The latter motif can be leveraged for catalysis. Furthermore\, I will sho
 w how surface chemistry can be used to enable superconducting nanocomposit
 ies\, and nanoribbon memristors.As such\, we establish surface chemistry a
 s a key enabler in a variety of applications and NMR as the method of choi
 ce for characterizing the surface. This is a versatile field\, with fundam
 ental chemistry and spectroscopy leading to exiting innovations in physics
  and engineering and finally solving real-life problems.
LOCATION:Big Seminar room Ground floor / Office Bldg West (I21.EG.101)\, IS
 TA
ORGANIZER:amally@ist.ac.at
SUMMARY:Jonathan de Roo: An NMR toolbox to study the surface of nanocrystal
 s\; Enabling superconducting\, memristive and catalytic applications
URL:https://talks-calendar.ista.ac.at/events/1865
END:VEVENT
END:VCALENDAR