▎ 摘　　要

The E7 Nematic liquid crystal (NLC) doped with Graphene quantum dots (GQDs) have been obtanied by bottomup approaches to improve thermodynamics and electrochemical properties. The N-I phase transition temperature and enthalpy were increased in comparison with the pure E7. The anchoring effect plays a key role in N-I phase transition Also, the Ea values was decreased in doped GQDs system comapre to pure E7. The electrical conductivity of the doped GQD system was significantly more than pure E7. GQDs doping does significantly affect the permittivity of the nematic host, it noticeably increases its charge capacitance. (C) 2018 Elsevier B.V. All rights reserved.