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UID:20250929T125948EDT-2747vUzod0@132.216.98.100
DTSTAMP:20250929T165948Z
DESCRIPTION:Luminescent nanomaterials that can be excited\, as well as emit
 \, in the near-infrared (NIR) have been investigated for use in a plethora
  of applications including nanomedicine\, nanoelectronics\, biosensing\, b
 ioimaging\, photovoltaics\, photocatalysis\, etc. The use of NIR light for
  excitation mitigates some of the drawbacks associated with high-energy (U
 V or blue) excitation\, for example\, little to no background autofluoresc
 ence from the specimen under investigation as well as no incurred photodam
 age. Moreover\, one of the biggest limitations is of course\, that of pene
 tration. As such\, NIR light can penetrate tissues much better than high-e
 nergy light especially when these wavelengths lie within the three biologi
 cal windows (BW-I: 700-950\, BW-II: 1000-1350\, BW-III: 1550-1870 nm) wher
 e tissues are optically transparent. At the forefront of NIR excited nanom
 aterials are rare earth doped nanoparticles\, which due to their 4f electr
 onic energy states can undergo conventional (Stokes) luminescence and emit
  in the three NIR biological windows. However\, unlike other classes of na
 noparticles\, they can also undergo a multiphoton upconversion process whe
 re the NIR excitation light is converted to higher energies resulting in a
 nti-Stokes luminescence spanning the UV-visible-NIR regions. Perhaps the b
 iggest impact of such materials would be in the field of disease diagnosti
 cs and therapeutics\, now commonly referred to as theranostics. Due to the
  versatility of their optical properties\, it now becomes possible to gene
 rate high-energy light (UV or blue) in situ to trigger other light activat
 ed therapeutic modalities (i.e. drug release) while using the NIR emission
  for diagnostics (i.e. bioimaging\, nanothermometry). Here\, we present th
 e synthesis of various NIR excited (and emitting) rare earth doped core/sh
 ell (and multishell) nanoparticles and demonstrate how their luminescence 
 properties can be exploited for potential use in diverse biomedical applic
 ations. Finally\, we will demonstrate that the intelligent combination of 
 rare earth doped nanoparticles with other different optically stimulated m
 aterials can allow for the engineering of new multifunctional nanostructur
 es.\n
DTSTART:20181023T170000Z
DTEND:20181023T183000Z
LOCATION:Room 10\, Maass Chemistry Building\, CA\, QC\, Montreal\, H3A 0B8\
 , 801 rue Sherbrooke Ouest
SUMMARY:Chemical Society Seminar: Fiorenzo Vetrone - Luminescent Rare Earth
  Doped Nanoparticles: From Synthesis to Application
URL:/chemistry/channels/event/chemical-society-seminar
 -fiorenzo-vetrone-luminescent-rare-earth-doped-nanoparticles-synthesis-290
 641
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