Self-organized nano-structure

Key words Coil-globule transition -collapsed transition - self-organized nano-structure - single chain dynamics - hierarchical system... 

As has been shown above, oscillatory electrodeposition is interesting from the point of view of the production of micro- and nanostructured materials. However, in situ observation of the dynamic change of the deposits had been limited to the micrometer scale by use of an optical microscope. Inspections on the nanometer scale were achieved only by ex situ experiments. Thus, information vdth regard to dynamic nanostructural changes of deposits in the course of the oscillatory growth was insufHcient, although it is very important to understand how the macroscopic ordered structures are formed with their molecular- or nano-components in a self-organized manner. 

In general, the silanization of hydroxyl-terminated substrates such as silica or glass is an effective method which is used quite often for chemical modification of the substrate surface for immobilization of biomolecules. The main focus for silanization procedures is once again the examination of the self-organizing silane-monolayers. The properties of the monolayer depend on the chemical structure of the silanization reagent, the density of silanol-groups which are available on the surface and the physical surface structure on a nano-scale level. 

Self-organization systems under thermodynamic control (spontaneous processes with a negative free-energy change), such as supramolecular complexes, crystallization, surfactant aggregation, certain nano-structures, protein folding, protein assembly, DNA duplex. 

In this work, a route to build an aggregate of nanoparticles through two surfactants as mortar is developed in organic solvent. The results reveal that the strategy of self-assembly is an efficient way to create a new nano-structured system. The average size of assembled sphere is about 210 10 nm. The sample has a bulk-like sofemagnetic Fe behavior. 

In the following we will describe the self-organization of block copolymers in dilute solution, concentrated solution, and bulk. All these structures have been or can be used as templates for the preparation of nano particles and porous structures. 

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