Department of Nanoscience and Engineering, Inje University, Gimhae 50834, Republic of Korea.
Marine-Bionics convergence technology center, Pukyoung National University, Busan 48513, Republic of Korea; Department of Electrical, Electronics and Software Engineering, Pukyoung National University, Busan 48513, Republic of Korea.
Int J Biol Macromol. 2024 May;268(Pt 2):131919. doi: 10.1016/j.ijbiomac.2024.131919. Epub 2024 Apr 26.
Excessive exposure to UV and high-energy blue light (HEBL) can cause fatal eye and skin injuries. As a result, it is crucial to protect our bodies from UV and HEBL radiation. To achieve complete blocking of UV and HEBL, we developed a lignin-derived carbon quantum dot (L-CQD)/polyvinyl alcohol (PVA) film. L-CQD was synthesized from lignin, a waste woody biomass, and then blended with a PVA matrix to create a flexible L-CQD/PVA film. Thanks to simultaneous UV and HEBL absorption characteristics and bright color of L-CQD, the PVA film with 0.375 wt% L-CQD demonstrated outstanding blocking efficiency: 100 % in UV-C, UV-B, and UV-A, and at least 99.9 % in HEBL. It also exhibited a 44 % increase in lightness and a 12 % enhancement in transparency compared to lignin/PVA film. The film's ability to block UV and HEBL was further demonstrated by reducing >40 % UV-induced ROS formation in both cancerous and normal cell lines (Hs 294T, HeLa, CCD-986sk, and L929), as well as by blocking blue laser diode (LD) and LED. Since the L-CQD/PVA film is simple to produce, environmentally friendly, flexible, and thermally stable, it is suitable for use as a protective coating against sunlight and harmful emissions from IT devices.
过度暴露于紫外线和高能蓝光（HEBL）会导致致命的眼部和皮肤损伤。因此，保护我们的身体免受紫外线和 HEBL 辐射至关重要。为了实现对紫外线和 HEBL 的完全阻挡，我们开发了一种木质素衍生的碳量子点（L-CQD）/聚乙烯醇（PVA）薄膜。L-CQD 是由木质素（一种废弃的木质生物质）合成的，然后与 PVA 基质混合，制成柔性 L-CQD/PVA 薄膜。由于 L-CQD 具有同时吸收紫外线和 HEBL 的特性和明亮的颜色，含有 0.375wt%L-CQD 的 PVA 薄膜表现出出色的阻挡效率：对 UV-C、UV-B 和 UV-A 的阻挡效率达到 100%，对 HEBL 的阻挡效率至少达到 99.9%。与木质素/PVA 薄膜相比，它的明度提高了 44%，透明度提高了 12%。该薄膜还通过减少 >40%在癌细胞和正常细胞系（Hs 294T、HeLa、CCD-986sk 和 L929）中由紫外线诱导的 ROS 形成，以及阻挡蓝色激光二极管（LD）和发光二极管（LED），进一步证明了其阻挡紫外线和 HEBL 的能力。由于 L-CQD/PVA 薄膜易于制备、环保、灵活且热稳定，因此适合用作防阳光和 IT 设备有害排放的保护涂层。
