Chemistry - A European Journal
Chemistry - A European Journal
5 years ago

Room-Temperature Oligomeric Discotic Nematic Liquid Crystals over a Wide Temperature Range: Structure–Property Relationships

Room-Temperature Oligomeric Discotic Nematic Liquid Crystals over a Wide Temperature Range: Structure–Property Relationships
Surajit Dhara, Santosh Prasad Gupta, Santanu Kumar Pal, Subhransu Sekhar Mohapatra, Monika Gupta
The design and synthesis of three room-temperature discotic nematic (ND) liquid crystals (LCs) is presented. The LC consists of an azobenzene core attached to which are four pentaalkynylbenzene (PA) units through flexible alkyl spacers. The presence of a short azo linking group provides more disorder in the system, thereby reducing the packing efficiency among the PA units and resulting into the formation of a room-temperature ND phase over a wide temperature range. Dielectric constant and birefringence studies were performed to gain further insights into the physical properties of the mesophase. Oligomeric guys: A new approach is reported for the design of a room-temperature discotic nematic liquid crystal derived from azobenzene and pentaalkynylbenzene units (see scheme). Dielectric constant and birefringence studies were performed to gain further insights into the physical properties of the mesophase.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/chem.201701578

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