Novel heterocyclic liquid crystalline semiconductors with polymorphism

ABSTRACT

Novel heterocyclic liquid crystalline semiconductors incorporating fused thiazolo[5,4-d]thiazole (N, S), thiophene (S), pyridine (N), and/or alkoxy (O) units have been synthesised via simple and high efficient reaction routes and exhibit polymorphic transitions. The correlation between the molecular structures, especially the presence of strong polar and electronegative heteroatoms, and mesomorphic behaviour and transition temperatures was investigated. The energy levels and band gap for heterocyclic liquid crystalline 6 and 10 have also been measured to further evaluate their potentials for use as promising organic semiconductors.

KEYWORDS:

• Heterocyclic liquid crystalline
• polymorphism
• bis(phenylthiophene) thiazolo[5,4-d]thiazole
• pyridine-thiophene-alkoxy
• energy levels

Acknowledgements

Huaiyin Institute of Technology, the China Scholarship Council and the University of Hull are thanked for their support for Dr. Guang Hu.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by China Scholarship Council; Huaiyin Institute of Technology [grant number Z301B19582]; University of Hull.