@article{li_chen_2025,  title={[RETRACTION] SYNTHESIS AND CHARACTERIZATION OF SUBSTITUTED GROUP CONTROLLED PYRENE DERIVATIVES WITH RADICAL CATIONS},  volume={48},  ISSN={0100-4042},  url={https://doi.org/10.21577/0100-4042.20250025},  DOI={10.21577/0100-4042.20250025},  number={2},  journal={Química Nova},  publisher={Sociedade Brasileira de Química},  author={Li, Shunjie and Chen, Jian},  year={2025},  pages={e–20250025} }