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SUMMARY:From new dynamically self-assembling materials to chemical reactiv
 ities in confined environments  - Professor Rafal Klajn (Weizmann Institut
 e of Science\, Israel) 
DTSTART:20180719T130000Z
DTEND:20180719T140000Z
UID:TALK108034@talks.cam.ac.uk
CONTACT:Lingtao Kong
DESCRIPTION:Living organisms are prominent examples of systems self-assemb
 led and performing useful functions under far-from-equilibrium conditions.
  Inspired by Nature\, we design new materials whose properties and functio
 ns can be “turned on” and “off” on demand\, using external stimuli
  as “inputs”. Among the different external stimuli\, we focus on magne
 tic fields(1) and light(2) since they can be delivered instantaneously and
  into precise locations. In this talk\, I will discuss molecular switches 
 and inorganic nanoparticles as the key building blocks of new dynamically 
 self-assembling materials. These materials hold promise for new applicatio
 ns as diverse as light-controlled catalysis\,(3) or manipulating non-magne
 tic objects with the help of magnets.(4) I will also describe how these st
 udies led us to become interested in a more fundamental issue of chemical 
 reactivity in confined environments. Among the different types of syntheti
 c confined spaces we studied\, I will focus on nanopores of porous aromati
 c frameworks\,(5) surfaces of inorganic nanoparticles\,(6) nanopores withi
 n non-close-packed nanoparticle arrays\,(7) and cavities of coordination c
 ages.(8)\,(9)\n\n(1) Singh\, G. et al.\, Science 2014\, 345\, 1149–1153.
 \n(2) Kundu\, P. K. et al.\, Nat. Chem. 2015\, 7\, 646–652.\n(3) Zhao\, 
 H. et al.\, Nat. Nanotech. 2016\, 11\, 82–88.\n(4) Chovnik\, O. et al.\,
  J. Am. Chem. Soc. 2012\, 134\, 19564–19567. \n(5) Kundu\, P. K. et al.\
 , Nat. Commun. 2014\, 5\, 3588.\n(6) Zdobinsky\, T. et al.\, J. Am. Chem. 
 Soc. 2014\, 136\, 2711–2714.\n(7) Udayabhaskararao\, T. et al.\, Science
  2017\, 358\, 514–518.\n(8) Samanta\, D. et al.\, Nat. Commun. 2018\, 9\
 , 641.\n(9) Samanta\, D. et al.\, Proc. Natl. Acad. Sci. USA 2018\, 115\, 
 in press.
LOCATION:Pfizer Lecture Theatre\, Department of Chemistry
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