Eco-friendly carbon dots for smart materials: A sustainable approach to forensics, biopolymer films, and UV-blocking applications

IF 5.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2025-06-04 DOI:10.1016/j.materresbull.2025.113596

D.H. Sandeep , B.R. Radha Krushna , Shih-Lung Yu , Bing-Li Lyu , K. Manjunatha , Sheng Yun Wu , S.C. Sharma , J.B. Prasanna Kumar , Liza Mohapatra , C. Krithika , K. Manimekalai , Augustine George , H. Nagabhushana

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引用次数: 0

Abstract

We report the synthesis of red-emissive carbon dots (SCDs) from Spinach leaves via a hydrothermal method. These SCDs exhibit strong red photoluminescence (PL), high quantum yield (QY), and excellent stability. Their unique optical features allow clear visualization of latent fingerprints (LFPs) and latent lip prints (LLPs), offering a sensitive and practical forensic tool. Incorporated into polyvinyl alcohol (PVA) films, the SCDs form flexible nanocomposites (NCs) with UV-blocking properties that extend food shelf life by minimizing moisture loss and microbial growth, as shown in strawberry preservation tests. SCDs serve as fluorescent inks for anti-counterfeiting (AC), generating patterns visible only under UV light for secure data encryption. Cytotoxicity assays confirm their biocompatibility, supporting safe application in consumer and biomedical products. The environmental friendliness of SCDs highlights their potential for diverse applications in security, food safety, and materials science. Future research will focus on expanding the scope of SCDs in emerging technological fields.

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用于智能材料的环保碳点：法医、生物聚合物薄膜和紫外线阻挡应用的可持续方法

我们报道了用水热法从菠菜叶中合成红色发射碳点（SCDs）。这些scd具有强红色光致发光（PL）、高量子产率（QY）和优异的稳定性。其独特的光学特性允许潜在指纹（lfp）和潜在唇印（llp）的清晰可视化，提供敏感和实用的法医工具。将SCDs加入聚乙烯醇（PVA）薄膜中，形成具有防紫外线特性的柔性纳米复合材料（nc），通过最大限度地减少水分流失和微生物生长，延长食品的保质期，草莓保鲜试验表明。scd用作防伪（AC）荧光油墨，生成仅在紫外线下可见的图案，用于安全数据加密。细胞毒性试验证实了它们的生物相容性，支持在消费和生物医学产品中的安全应用。SCDs的环境友好性突出了它们在安全、食品安全和材料科学方面的多种应用潜力。未来的研究将集中在扩大scd在新兴技术领域的应用范围。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.