Niu Junyi
School of Metallurgical Engineering, Anhui University of Technology, Ma'anshan, 243032, China.
J Fluoresc. 2025 Aug 15. doi: 10.1007/s10895-025-04505-6.
To address dual challenges in managing the invasive plant Alternanthera philoxeroides and addressing resource valorization demands, this study proposes a green and efficient utilization strategy: employing Alternanthera philoxeroides as carbon precursor to synthesize carbon dots (CDs) via one-step hydrothermal synthesis. Through innovative introduction of 1,5-naphthalenediamine as a conjugated structure modifier, single-component white-light-emitting carbon dots (W-CDs) were successfully prepared. This study demonstrates that the multiple amino groups of 1,5-naphthalenediamine condense with precursor carboxyl groups to form amide bonds, synergistically inducing a red shift in fluorescence. This process achieves broadband emission spanning 400-700 nm, with the quantum yield enhanced to 22%. Furthermore, W-CDs were integrated with epoxy resin to construct UV-excitable white LEDs, whose emission spectrum spans the visible region, demonstrating their potential for solid-state lighting applications. The research also proposes an eco-economic "waste-control-waste" strategy for invasive plant management while pioneering a green synthesis route for biomass-derived white carbon dots and their optoelectronic integration.
为应对入侵植物空心莲子草管理中的双重挑战并满足资源增值需求，本研究提出了一种绿色高效利用策略：以空心莲子草为碳前驱体，通过一步水热合成法合成碳点（CDs）。通过创新性引入1,5-萘二胺作为共轭结构改性剂，成功制备了单组分白光发射碳点（W-CDs）。本研究表明，1,5-萘二胺的多个氨基与前驱体羧基缩合形成酰胺键，协同诱导荧光红移。该过程实现了400-700nm的宽带发射，量子产率提高到22%。此外，W-CDs与环氧树脂集成以构建紫外激发白光发光二极管，其发射光谱跨越可见光区域，展示了它们在固态照明应用中的潜力。该研究还提出了一种生态经济的“控废-用废”入侵植物管理策略，同时开创了生物质衍生白光碳点及其光电集成的绿色合成路线。
