Calix[4]arenes as molecules for second order nonlinear optics

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Kelderman, Erik and Derhaeg, Lode and Verboom, Willem and Engbersen, Johan F.J. and Harkema, Sybolt and Persoons, A. and Reinhoudt, David N. (1993) Calix[4]arenes as molecules for second order nonlinear optics. Supramolecular Chemistry, 1993 (2-3). pp. 183-190. ISSN 1061-0278

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Abstract:The synthesis of a novel class of molecules for second order nonlinear optics, i.e. calix[4]arenes with extended π-systems, is described. These compounds are obtained via Wittig-Horner reactions of the formylated calix[4]arenes 5 and 6 to give the stilbene derivatives 7-9, or by diazotization of calix[4]arene, 1, followed by alkylation to give the phenylazocalix[4]arenes 11 and 12. The molecular second order nonlinear optical properties (βz) of these calix[4]arenes have been measured by electric field-induced second harmonic generation. The influence of different acceptors as well as the influence of the different conformations of the calix[4]arenes on βz values were determined. Surprisingly, the wavelength of the charge-transfer band λmax is lower when βz increases upon increasing the number of acceptors.
Item Type:Article
Copyright:© 1993 Taylor & Francis
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/12562
Official URL:http://dx.doi.org/10.1080/10610279308038314
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Metis ID: 106743