Synthesis and mesomorphic properties of a series of dimers derived from thioether-terminated and cholesteryl

Sulfur-linked cyanobiphenyl-based liquid crystal dimers and the twist-bend nematic phase

“…behaviour. An alternative view, however, may be argued to account for the data shown in Figures 3(a, b) such that a more flexible linkage allows for increasingly nonlinear conformations to be adopted which disrupt the nematic organisation, and reduce TNI [53,[57][58][59][60][61]. Such a view, although consistent with the behaviour of the even members of the series, appears inconsistent with the data shown for the odd members.…”

The effects of alkylthio chains on the properties of symmetric liquid crystal dimers

“…It was originally suggested that the inherent flexibility of liquid crystal dimers would inhibit the formation of smectic phases, This was shown, however, not to be the case by Date et al, 57 There have been very few reports describing liquid crystal dimers containing terminal alkylthio chains. [58][59][60] Here we explore how changing the nature of the links between the terminal chains and mesogenic units effects the phase behaviour of symmetric liquid crystal dimers with a particular focus on the thioether link. We report the synthesis and…”

“…There have been very few reports describing liquid crystal dimers containing terminal alkylthio chains. [58][59][60] Here we explore how changing the nature of the links between the terminal chains and mesogenic units effects the phase behaviour of symmetric liquid crystal dimers with a particular focus on the thioether link. We report the synthesis and characterisation of the materials corresponding to the m.OnO.m family but containing thioether links, the mS.OnO.Sm family, Fig.…”

Alkylthio-based asymmetric liquid crystals: unravelling the substituent effects and intercalated cybotactic nematic and smectic phases

“…[1][2][3][4][5]29,[34][35][36] On the other hand, enantiotropic LC phases were observed from some types of alkylthio-based calamitic molecules. [4][5][6][7][8][29][30][31][32][33][34][35][36][37][38][39][40] However, there has been no report of covalent-bonded homologous series in which all members exhibit enantiotropic LC phases, while only one such hydrogen-bonded homologous series is known. 35 The lack of dataset of more versatile covalent-bonded homologous series showing the enantiotropic LC phases allowed us only to infer the effects of alkylthio groups on LC behaviours based on few of its homologous series.…”