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arXiv · 2509.21364

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
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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.

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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. 2025-09-22. Unsymmetrical synthesis of benzimidazole-fused naphthalene imides with panchromatic absorption and redox activity. https://arxiv.org/abs/2509.21364

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