Minimal requirements for one-dimensional aggregation in simple coarse-grained models of charged porphyrinoid units

triggers the transition from disordered clusters to ordered one-dimensional nanowires. This disorder-to-order transition was quantitatively supported by changes in radial distribution functions, cluster size distributions, and charge alternation indices. Increased ionic strength weakens long-range electrostatic attraction, thus delaying nanowire formation, although the short-range cohesive interactions alone can still drive aggregation under these conditions. These findings reveal the delicate balance between electrostatic screening and short-range forces in directing supramolecular organization in aqueous colloidal systems. These results provide design principles for tuning the morphology of porphyrin-based nanostructures with potential applications in colloidal engineering, interfacial science, and functional nanomaterials.