Fabrication of Π-Conjugated Molecular Nanoparticles for the Effective Photocatalytic Degradation of Organic Dyes

[Formula: see text]-conjugated photocatalysts have recently gained popularity because they provide a high degree of synthetic flexibility and tenability of frontier orbital energies. Nevertheless, the majority of organic semiconductors were insoluble in aqueous solutions typically demonstrating suboptimal photocatalytic activity, limiting their deployment in visible light purification of aquatic environments. Nanoscale control of materials by dispersing [Formula: see text]-conjugated molecule 3,6-bis(5-((Z)-(3-ethyl-4-oxo-2-thioxothiazolidin-5-ylidene)methyl)thiophen-2-yl)-2,5-bis(2-ethylhexyl)-2,5-dihydropyrrolo[3,4-c]pyrrole-1,4-dione marked as DPPRD to nanoparticles (NPs) through a simple reprecipitation process provided a viable method to solve the phase interface control behavior. Transmission electron microscopy and scanning electron microscopy analysis displayed that the NPs exhibited uniform and relatively distributed morphological features. The photocatalytic elimination ability of methyl orange, phenol red, rhodamine B and methylene blue was tested using the prepared photocatalyst with extremely small amounts of NPs, and the degradation efficiencies reached 90.8%, 91.1%, 94.5% and 95.7%, respectively. This nanoscale processing strategy was conducive to the application of organic optoelectronic functional materials in environmental and industrial fields.