Non-covalent intermolecular interactions of colloidal nematic liquid crystals doped with graphene oxide. Issue 9 (15th July 2017)

• Record Type: Journal Article
• Authors: Javadian, Soheila; Dalir, Nima; Kakemam, Jamal
• Is Part Of: Liquid crystals. Volume 44:Issue 9(2017)
• Page Start: 1341
• Page End: 1355
• Publication Date: 2017-07-15
• Subjects: Nematic liquid crystal -- graphene oxide -- phase transition -- and intermolecular interactions; Liquid crystals -- Periodicals; 548.905
• DOI: 10.1080/02678292.2016.1278051
• Languages: English
• ISSNs: 0267-8292

Abstract

ABSTRACT: Graphene oxide (GO) was doped to eutectic uniaxial nematic liquid crystals (NLCs) (E5CN7 ) with different percentages to improve the physiochemical properties of NLCs effectively. GO shifts the N-I phase transition temperature to higher values. It has been observed that increasing GO concentration up to 0.75% increases the N-I phase transition temperature substantially while further increase of GO concentration results in an inverse trend. The GO/E5CN7 non-covalent interactions change the N-I phase transition. The contribution of several terms such as anchoring and polarisation effects on N-I phase transition was quantified as well. The results suggest that the size is an important contributor to GO and liquid crystal interaction. The results show that E5CN7 @GO composites may act as promising candidates to enhance the efficiency of room temperature devices. GRAPHICAL ABSTRACT: