Preparing liquid crystalline dispersion of high aspect ratio carbon nanotubes

Submitting author affiliation:
National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Japan

Beilstein Arch. 2023, 202344.

Published 16 Oct 2023

cc-by Logo


We successfully prepare the surfactant-assisted carbon nanotube (CNT) liquid crystal (LC) dispersion with double-walled CNTs (DWCNTs) having a high aspect ratio (~1378). Compared to dispersions of lower aspect ratio CNTs, the transition concentrations from isotropic phase to biphasic state, and from biphasic state to nematic phase are lowered, which is consistent with the predictions of Onsager theory. An aligned CNT film was prepared from the DWCNT dispersion by a simple bar-coating method. Regardless of the higher aspect ratio, the order parameter obtained from the film is comparable to that from CNTs with lower aspect ratios. This finding implies that precise control of the film formation process, including a proper selection of substrate and deposition/drying steps, is crucial to maximize CNT-LC utilization.

Keywords: Aqueous dispersion; Bar-coating; Carbon nanotube; Coffee-ring effect; Liquid crystal

Supporting Information

Format: DOCX Size: 703.7 KB   Download

How to Cite

When a peer-reviewed version of this preprint is available, this information will be updated in the information box above. If no peer-reviewed version is available, please cite this preprint using the following information:

Kojima, K.; Kosugi, N.; Jintoku, H.; Kobashi, K.; Okazaki, T. Beilstein Arch. 2023, 202344. doi:10.3762/bxiv.2023.44.v1

Download Citation

Citation data can be downloaded as file using the "Download" button or used for copy/paste from the text window below.
Citation data in RIS format can be imported by all major citation management software, including EndNote, ProCite, RefWorks, and Zotero.