Highly ordered films of neat calixarenes for second order nonlinear optics (pages 925–930)
Dr. Erik Kelderman, Gerard J. T. Heesink, Dr. Lode Derhaeg, Dr. Thierry Verbiest, Dr. Piet T. A. Klaase, Dr. Willem Verboom, Dr. Johan F. J. Engbersen, Dr. Niek F. van Hulst, Dr. Koen Clays, Prof. Andre Persoons and Prof. David N. Reinhoudt
Article first published online: 29 OCT 2004 | DOI: 10.1002/adma.19930051211
In substituted calix-arenes—cyclophanes consisting of four phenol moieties connected by methylene bridgesthe 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 calixarenes, including their orientation in thin films and the stability of their NLO properties, are described.