124783-44-4Relevant articles and documents
Organic materials with non-linear optical properties
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, (2008/06/13)
A material in the form of a film is described which contains, in an orientated arrangement which does not display point symmetry, compounds of formula I STR1 wherein X is =CH-- or =N--, R1 is C12 -C30 -alkyl, R2 is hydrogen or C1 -C30 -alkyl, R3 is --NO2, --CN, --CF3, --COCF3, --SO2 CH3 or --SO2 CF3, R4 is hydrogen or is defined in the same way as R3, R5 is hydrogen or --NR6 R7 and R6 and R7 independently of one another are hydrogen or C1 -C30 -alkyl, it also being possible for any of the alkyl radicals to be partially fluorinated or perfluorinated. The compounds of formula I can be arranged in Langmuir-Blodgett layer systems. Such systems can be used for example for the manufacture of opto-electronic units.