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SUMMARY:On the Structure-Mechanical Property Relationships of Hybrid Inorg
 anic-Organic Framework Materials: Nanoindentation\, High-Pressure Crystall
 ography and Computational Studies - Dr Jin-Chong Tan\, Department of Mater
 ial Science and Metallurgy
DTSTART:20101105T140000Z
DTEND:20101105T150000Z
UID:TALK25978@talks.cam.ac.uk
CONTACT:Ms Helen Gardner
DESCRIPTION:Hybrid framework materials are single-phase crystalline compou
 nds containing both inorganic and organic moieties\, as integral parts of 
 a network with infinite bonding connectivity. Such hybrid systems are held
  together by strong covalent and/or coordination bonding to create one-dim
 ensional (1 D) chains\, 2 D layers\, or 3 D networks that may incorporate 
 both organic and inorganic connectivities. In this context\, hybrid framew
 ork materials are not to be confused with conventional hybrid composites w
 hereby their organic and inorganic components exist as separate phases. Th
 e field of hybrid framework materials now represents one of the fastest gr
 owing areas in materials chemistry\, mainly because their enormous structu
 ral and chemical diversity offers vast opportunities for creating many tec
 hnologically relevant properties. For example\, dense hybrid framework mat
 erials can exhibit a wide range of attractive physical properties includin
 g electrical\, magnetic\, multiferroic and optical phenomena. On the other
  hand\, porous hybrid framework materials are attracting considerable atte
 ntion by virtue of their permanent nanoscale porosity in combination with 
 highly tuneable pore size and functionality\, useful for gas storage\, sep
 aration\, drug delivery\, sensing and catalytic applications. Indeed\, all
  the applications envisaged for this new class of materials involve subjec
 ting the hybrid structures to stresses and strains\, for which knowledge o
 f their mechanical properties will be central to reach practical implement
 ations. In this talk\, I will elucidate the structure-property relationshi
 ps of dense and nanoporous hybrid framework materials using single-crystal
  nanoindentation [1-3]\, synchrotron X-ray and neutron diffraction [4\,5]\
 , and density functional calculations [5\,6].
LOCATION:Oatley Seminar Room\, Department of Engineering
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