Controlled synthesis of Polymorphic nanostructures (nanodots, nanorods, nanowires, nanotubes, nanolaminates, hollow nanospheres) using templates formed by Amphiphilic Block Copolymer stabilized "water

This technology describes novel, comprehensive techniques for efficient synthesis of monodisperse, consistently-shaped and uniform-sized II-VI Compound Semiconductor (CS) nanoparticles like ZnSe & CdSe. Different shaped nanocrystals constitute an im portant research tool in several emerging areas in Opto-electronics, Medical Devices and Diagnostics, Bioinformatics, Research in Biomolecular Interactions, Sensors and Detectors, National Security, Energy and Environment, Materials and Manufacturing , Computers and Telecommunication.

The basic process involves creating suspended 'nanoreactor' droplets containing a Zinc/Cadmium compound in an emulsion by mixing appropriate reactants in specific, pre-computed proportions. Bubbling a gas (Hyd gen Selenide) through the emulsion to react with the contents of the nanoreactors yields the Zn/Cd Selenide nanocrystals. The basic process is then generalized to yield a whole portfolio of pre-desired shapes. 3 compounds (two of them generic, being water and oil respectively) are combined in pre-computed specific proportions (by weight) to yield consistent, monodisperse liquid crystalline templates. The template-shapes have a one-to-one correspondence with the weight proportions of reactants. U sing gas bubbling, nanocrystals in varied shapes can be formed within the templates. The nanorods, nanowires, nanoplates, nanotubes and nano-‘other structures’ formed are crystalline and exhibit characteristic luminescence.

1) The platform proces s provides spherical ZnSe/CdSe nanocrystals in specified shapes and sizes. The micro-emulsion-cum-gas process is unique; so is precise control over particle size. 2) Reactants used are inexpensive and commonly available 3) Particle shape can be var

Categories: Research Tool, Nanotechnology

Type of Offer: Licensing



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