In this study, we performed a micro/nanocrystallization of charge transfer crystals (CTCs) composed of tetrathiafulvalene (TTF)-tetracyanoquinodimethane (TCNQ) via a charge transfer-induced reprecipitation method. Depending on the order of injected solution, TTF-TCNQ CTCs formed a nanorod or a nanorod-coated rhombic shape. We concluded that the crystallinity of the TCNQ particles in the water dispersion determines the final CTC shape. (c) The Author(s) 2019. Published by ECS. This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 License (CC BY, http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse of the work in any medium, provided the original work is properly cited.