Abstract
For the first time a series of liquid crystalline dendrimers of generations 1–4 containing 8, 16, 32 and 64 terminal methoxyphenyl benzoate mesogenic groups respectively have been synthesised. Mesogenic groups were attached to the carbosilane dendritic matrices with terminal allyl groups through -OOC-(CH2)10-Si(CH3)2OSi(CH3)2- spacer by a hydrosilylation reaction. Structure and purity of all new compounds were confirmed by 1H-NMR spectros-copy and GPC analysis. Phase behaviour of LC dendrimers was investigated by means of polarising optical microscopy, DSC and X-ray methods. All LC dendrimers synthesised display mesophases of smectic types as well as crystalline phases over wide temperature region. Possible structure and arrangement of molecules of LC dendrimers in these mesophases are discussed.
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