Unsymmetrical synthesis of benzimidazole-fused naphthalene imides with panchromatic absorption and redox activity
Guan-Ru Lin, Huai-Chih Chang, Yi-Chen Wu, Chen-Kai Hsieh, Chih-Jou Chien, Guan-Lin Lu, Makeshmuralikrishna Kulasekaran, Milanmathew Sssuraj, Tzu-Ling Ho, Jatin Rawat, Hsien-Hsin Chou
公開日: 2025/9/22
Abstract
We report a concise synthesis of unsymmetrical benzimidazole-fused naphthalene imide (BfNI) and anhydride (BfNA) derivatives featuring broad UV-Vis-NIR absorption, stable redox activity, and enhanced solubility. Incorporation of triarylamine donors induces strong intramolecular charge transfer and narrows the optical bandgap. This modular design bypasses multistep protection-deprotection and complex pi-assembly, offering a versatile platform for tunable optoelectronic materials.