Prof. dr. M. Kovalenko, ETH Zurich, Department of Chemistry and Applied Biosciences, Zurich, Switzerland : All-Inorganic Design of Functional Nanomaterials Using Colloidal Nanocrystals
|10 November 2011||FWN-Building 5111.0080, Nijenborgh 4, 9747 AG, Groningen|
Prof. dr. Maksym Kovalenko
ETH Zurich, Department of Chemistry and Applied Biosciences, Zurich, Switzerland
All-Inorganic Design of Functional Nanomaterials Using Colloidal Nanocrystals
|Start:||16.00 (Doors open and coffee available at 15.30)|
Many materials in the form of well-defined nanoscale crystals (“nanocrystals”) exhibit unique properties due to size effects and large surface-to-volume ratios. Yet it is clear that the utilization of nanomaterials in modern technologies requires their integration into solid-state structures with programmable electronic, magnetic and optical properties. The clear challenge is the rational design of this novel type of condensed matter, in which the size-tunable individual properties of nanoscale building blocks are enhanced by their interactions and by the macroscopic properties of their ensembles.
To achieve high degree of electronic coupling, the nanocrystal surface chemistry and surrounding medium need to be properly engineered. To address these issues, we have recently developed a general approach for replacing highly insulating organic capping ligands from the nanocrystal surface with electronically conductive inorganic molecular species. The combinations of common metals and chalcogens such as SnS4 4-, SnTe4 4-, In2Se4 2-, Sn2S6 4-, SbSe4 3- etc. were employed as surface capping ligands. I will discuss various aspects of the synthesis, assembly, and device integration of these novel all-inorganic nanomaterials.
|Last modified:||12 September 2014 11.22 a.m.|