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Photo-encoded Interfaces

Within this sub-project we are using chemical strategies to design light controllable interfaces for material science and surface structuring. We use either photo-cleavage to change surface properties (make them more hydrophilic or hydrophobic) or  photo- click chemistry to covalently link different species and materials.  Particularly fruitful collaboration with Christopher Barner–Kowollik group from Karlsruhe Institute of Technology, Germany, has resulted in a number of new light triggered click strategies for application in nanoengineering. 



Gold nanoparticles are structured on the planar, glass surface modified with maleimid groups by use of direct laser writing (DLW) and light tirggered Diels Alder reaction employing photoenol groups attached to the nanoparticle surface.

Direct laser writing enables writing of virtually any pattern using different nanoparticles providing they contain light activable groups.


L. Stolzer et al, Chem. Commun. 2015.


Self reporting linker, which can be used to assess biofunctionalisation of the nanoparticle surface was prepared based on tetrazole chemistry.

Reaction between tetrazole coated gold nanorods and maleimide containing biomolecules results in flourescent product enabling quick assessment of the surface modification.


L. Stolzer et al., Chemistry Eur. J. 2015.



 Photoenol Diels Alder strategy is used to prepare enzyme-DNA conjugates for further applications in protein chip design.

Use of light allows for temporal and spatial control over conjugation.


D. Bauer et. al., Chem. Commun. 2014.