We investigated the seventh homologues of the hydrogen bonded in dimers liquid crystals p,n alkyloxybenzoic acids (7OBA), which in its pristine state displays achiral nematic (N) and smectic C (S-C) states. The mixture of this liquid crystal with nanoparticles, expressing various shapes and sizes, where the liquid crystal serves as a matrix, introduces new optical and electrooptical properties of the composite material. We concentrated on the mixture 7OBA with single wall carbon nanotubes (SWCNTs), which exposes a set of chiral and ferroelectric states, including the unique one (smectic C-G) state, which do not appear in the pristine achiral 7OBA. On the base of polarization microtextural, thermal and polarization spectroscopic (FT far infra red-FT FIR and microRaman) analyses we present a qualitative model of the smectic C-G state in low-molecular dimeric liquid crystals.