| abstract |
The invention relates to 1,4-diethynylbenzene derivatives having substituents in the 2 and 3 positions (see formula I, claims), to the use thereof for high-frequency components, to liquid crystal media containing the compounds, and to high-frequency components, in particular antennas, containing said media, especially for the gigahertz range. The liquid crystal media are used for example to shift the phase of microwaves for tunable phased-array antennas. |