Homoconjugated push–pull chromophores were obtained by an efficient, click-type formal
[2+2] cycloaddition. With these short synthetic transformations, complex chromophore
structures were achieved in a single step without any by-product formation. Significant
second-order optical nonlinearities have been calculated for the synthesized compounds.
Key words
triazene - nonlinear optics - [2+2] cycloaddition - homoconjugation - donor–acceptor
systems - intramolecular charge transfer