Self-assembled amphiphiles interface techniques

In the case of amphiphilic or surface - adsorbing block copolymers, the self -assemble structure at the air-water interface can also transferred to a solid substrate using the Langmuir - Blodgett (LB) transfer technique [121-123],... 

Abstract Copolymers of 1,4-polyisoprene-polyacetylene with up to 25% polyacetylene are soluble in organic solvents and, like native polyacetylene, have interesting electrical and non linear optical properties. Because the molecules are amphiphilic techniques analogous to Langmuir-Blodgett methods may prove useful for self assembly and so here we study the surface excess of toluene solutions by the specular reflection of neutrons. A surface layer structure with excess PA at the air/solvent interface is characterised using the isotopic replacement method in neutron scattering. 

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