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Non-covalent intermolecular interactions of colloidal nematic liquid crystals doped with graphene oxide |
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| Authors: | Soheila Javadian Nima Dalir Jamal Kakemam |
| Institution: | 1. Department of Physical Chemistry, Faculty of Basic Science, Tarbiat Modares University, Tehran, I.R. of Iranjavadian_s@modares.ac.ir;3. Department of Physical Chemistry, Faculty of Basic Science, Tarbiat Modares University, Tehran, I.R. of Iran |
| 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. |
| Keywords: | Nematic liquid crystal graphene oxide phase transition and intermolecular interactions |