"Atom-economic, atom-economic (""click""-type)transformations of donor (N,N-dialkylaniline, TTF, ferrocene)-activated acetylenes with strong electron-accepting olefins (TCNE, TCNQ, tricyanovinyl derivatives) are applied to the construction of stable molecular and supramolecular chromophores with unusual electronic and optical properties. Their properties are characterized in interdisciplinary collaboration with the objectives to provide new classes of chromophores for opto-electronic device applications, to investigate pi-electron delocalization in acetylenic molecular architectures extending into one, two, and three dimensions, and to advance fundamental knowledge in an interplay between experiment and theory allowing prediction and tuning of opto-electronic properties. Specific aims are: 1. New "super-electron acceptors" and investigation of their intra- and intermolecular charge-transfer interactions. These non-planar, stable, and sublimable chromophores are expected to possess high third-order optical nonlinearities and are investigated for formation of amorphous, high-optical quality films and conductive or magnetic charge-transfer complexes and salts with various electron donors. 2. Optically pure alleno-acetylenic macrocycles and oligomers adopting helical conformations. The chiroptical properties of these chromophores are exceptional and will be further enhanced in supramolecular assemblies. 3. Covalently modified fullerenes with increased electron uptake capability for applications in photovoltaic devices. 4. Regular [AB]-type oligomers and polymers using the formation of charge-transfer chromophores from acetylenic precursors as the chain-propagation step. 5. Zwitterionic, redox-amphiphilic dendrimers for mono- and multi-layer formation in organic electronic devices."
Field of science
- /natural sciences/chemical sciences/organic chemistry/aliphatic compounds
- /natural sciences/physical sciences/electromagnetism and electronics/optoelectronics
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