O-Alkylated p-nitrocalix[4]arenes, synthesis, LB-monolayers and NLO-properties

Abstract
Four tetraalkylethers (1a-d, C10, C14, C16, C18) of p-tert-butylcalix[4]arene were prepared in the cone conformation. Ipso-nitration led to the corresponding ethers of p-nitrocalix[4]arene (2a-d). The octadecylether 2d formed Langmuir monolayers with solid state packing at the air-water interface and multilayers could be obtained with the Blodgett technique. Determination of the second order polarizability of 2b with the EFISH method gave a value of βz = 1.4·10−50 Cm3V−2.
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