Synthesis of novel organosiloxane liquid-crystal materials and Investigation of the occurrence of de Vries phases in them

To continue our research in organosiloxane liquid crystal materials we propose to design and synthesize at SQU a series of homologous materials based on modifications of materials previously synthetized at SQU. In this proposed work we intend to attach laterally the mesogenic moiety to the siloxane group. To our knowledge this has not been reported in the literature. We also propose to add a fluorine to the mesogenic core and to vary the length of the alkyl chain. We expect all the materials to display ferroelectric phases and some to display de Vries SA* behavior. We also expect to observe a SA* (de Vries) to SC*transition in some of the materials. This timely relevant project can be achieved at a relatively low cost. The Liquid-Crystal Laboratory has been well-equipped through previous funding by SQU. The chemistry for the synthesis is now well established in the chemistry department. Small equipment is required to improve the yield in the synthetic work.

To continue our research in organosiloxane liquid crystal materials we propose to design and synthesize at SQU a series of homologous materials based on modifications of materials previously synthetized at SQU. In this proposed work we intend to attach laterally the mesogenic moiety to the siloxane group. To our knowledge this has not been reported in the literature. We also propose to add a fluorine to the mesogenic core and to vary the length of the alkyl chain. We expect all the materials to display ferroelectric phases and some to display de Vries SA* behavior. We also expect to observe a SA* (de Vries) to SC*transition in some of the materials. This timely relevant project can be achieved at a relatively low cost. The Liquid-Crystal Laboratory has been well-equipped through previous funding by SQU. The chemistry for the synthesis is now well established in the chemistry department. Small equipment is required to improve the yield in the synthetic work.