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SUMMARY:Hybrid porous (nano)materials. Confinement and applications 
DTSTART:20141126T171500
DTEND:20141126T181500
DTSTAMP:20260505T064340Z
UID:3699f7e39b48903041dab506bf48df00713c9933733a881ee6192cda
CATEGORIES:Conferences - Seminars
DESCRIPTION:Prof. Luisa de Cola\, Institut de Science et d'Ingénieurie Su
 pramoléculaire (ISIS)\, University of Strasbourg\, France and INT-KIT\, K
 arlsruhe\, Germany\nPorous systems\, and especially those where it is poss
 ible to control the chemical composition as well as their size\, aspect ra
 tio and pores dimension are of great interest for the development of new m
 aterials\, catalysis\, sensors\, biolabels\, drug delivery…. The talk wi
 ll illustrate some of the recent results on inert or active inorganic nano
 containers such as microporous and mesoporous silica based nanoparticles. 
 In particular examples using the crystalline allumino silicates\, zeolite 
 L\, and mesoporous organosilicates will be discussed since these materials
  can act as nanocontainers and due to their biocompatibility used for biom
 edical applications. One of the focuses will be on the properties of molec
 ules\, or small metallic clusters entrapped inside the channels. Indeed th
 e organization of molecules or atoms in ordered channels can lead to very 
 special properties absent in any other condition. For example the alignmen
 t in 1D of electroactive molecules inside the narrow channels of a zeolite
  L\, resulted in the formation of molecular wires with interesting electri
 cal properties and magnetic behavior [1]. The porous systems can also be f
 unctionalized of their surface and it will be shown that the particles can
  be decorated with different functional groups including biocompatible mol
 ecules and are able to perfom drug and PNA delivery inside the cell [2]. T
 he delivery can be probed by kinetic analyses after the nanoparticles inte
 rnalization. Finally a new strategy to obtain containers that can undergo 
 destruction will be illustrated as a promising approach to clearance of su
 ch materials in vivo\, independently from their initial size.\nReferences\
 n[1] L. De Cola\, W.G. van der Wiel et al. Science\, 2013\, 341\, 257.\n[2
 ] R. Corradini\, L. De Cola et al Adv. Healthcare Mater. 2014 in press. Ch
 em. Eur. J. in press.
LOCATION:CE 1 6 https://plan.epfl.ch/?room==CE%201%206
STATUS:CONFIRMED
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