Nematic liquid crystals are ubiquitous in our daily lives thanks to their use in display technology. The constituent molecules of the nematic phase haveon averagea preferred direction of orientation termed the director. The nematic liquid crystals we encounter day-to-day are apolar; despite their bulk orientational order, with the molecules showing having an equal probability of being orientated parallel or antiparallel to the director (Fig ). Nematic and smectic phases with polar order (Fig ) have recently been realised experimentally, presenting an interesting counterpoint to the apolar nematics we encounter daily. Notably, two materials were reported in 2017 -RM734 (Fig ) and DIO that are now understood to have polar nematic order and are ferroelectric. This so-called ferroelectric nematic (NF) phase displays properties distinct from those of the conventional apolar nematic: ferroelectricity, with large spontaneous polarisation; polar domains; strong non-linear optical response; 10 unique electrooptic responses; thermal gradient-induced circular motion of particles. Progress in understanding and exploiting the unique physics of the NF phase is reliant on the design and synthesis of new materials, with significant progress in the since the report of the first polar nematic materials in 2017. The NF materials reported to date are exclusively rod-like, with polar groups (for example nitro, fluoro, cyano, esters, difluoromethoxy) oriented such that there is a large molecular electric dipole moment which is oriented close to parallel to the molecules long axis. Around 200 compounds have been reported in the literature as exhibiting the NF, and these are presently restricted to covalently bonded materials. With hydrogen-bonded supermolecular liquid crystals being well established, we consider that, a priori, supermolecular systems should be capable of generating polar nematic phases. Furthermore, the large charges that can be associated with (for example) hydrogen-bonded systems might even confer advantageous increases in dipole moment.