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Innovative Hybrid Interfaces

23.02.2009
Chemists from the Osnabrück University have created new types of hybrid interfaces, whose redox active components contain components such as viologen as matrix and N-heterocyclic nucleobase-derivatives as head group. These novel hybrid interfaces have an interesting double function:

• Using the connection of a nucleobase derivative to a redox active molecule part, a conjugated π-electron system is created. Through this it is possible to change selectively the electrochemical properties with regard to an electrochrome material. • Using the molecule part of the nucleobase, the hybrid molecule has a bio-specific Base-Base recognition function. The hybridisation complementary bases (A-T and G-C for DNA after Watson and Crick) contain the key principle of many bio-technological verification systems, which target DNA verification. After the hybridisation, coupling reactions with verification reactants are necessary, which make the hybridisation occurrences visible. The novel hybrid molecule immediately creates this detection possibility using the redox active molecule part. In this way the hybrid interfaces are also suitable for the array-technology for bio-medical or genetic technological problems.

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