Highly ordered films of neat calix[4]arenes for second order nonlinear optics



In substituted calix[4]-arenes—cyclophanes consisting of four phenol moieties connected by methylene bridges[BOND]the number and also the relative positions of the donor and/or acceptor π-conjugated (D-π-A) units can be varied by changing the configuration. The Figure illustrates the cone configuration. The molecular and thin-film NLO properties of three tetra-D-π-A-substituted calix[4]arenes, including their orientation in thin films and the stability of their NLO properties, are described.

original image