Title:	Impact of carbon quantum dots on self-assembly and dielectric relaxation modes of a room temperature tri-component fluorinated antiferroelectric liquid crystal mixture
Authors:	Iqbal, Amir Urbanska, Magdalena Da˛browski, Roman S. Kumar, Sandeep Dhar, Ravindra
Issue Date:	6-Dec-2023
Publisher:	Royal Society of Chemistry
Citation:	Soft Matter,2023,Vol.19, p9293
Abstract:	We investigated the impact of carbon quantum dots (CQDs) of sizes B2–5 nm in a room temperature tri-component fluorinated antiferroelectric liquid crystal (AFLC) mixture. The synthesised CQDs have been characterised by high-resolution transmission electron microscopy and X-ray diffraction spectroscopy. An increase in the transition temperature and enthalpy to the isotropic liquid phase indicates stabilization of the AFLC mixture in the presence of CQDs. The dielectric studies have been carried out in the frequency range of 1 Hz–40 MHz under the planar anchoring conditions of the molecules. An appreciable increase in the permittivity, dielectric strength, and conductivity has been observedowing to the existence of sp2/sp3 hybridization in the CQDs which form a strong coupling and develop a dipolar ordering in the systems. Various relaxation frequencies were increased with the incarcerationof CQDs in the AFLC mixture. Overall, the different studies suggest that the doped CQDs are very well settled in between the host molecules without disturbing the molecular ordering of the hosts. Such results are encouraging and reveal the potential applicability of the CQD doped systems to produce highly efficient tuneable optical devices and other multifaceted applications.
Description:	Restricted Access.
URI:	http://hdl.handle.net/2289/8204
ISSN:	1744-6848(online)
Alternative Location:	http://arxiv.org/abs/cond-mat/ http://dx.doi.org/10.1039/d3sm01226c
Copyright:	2023, The Publisher
Appears in Collections:	Research Papers (SCM)

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