Meng Weixue, Wang Boyang, Ai Lin, Song Haoqiang, Lu Siyu
Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, China.
J Colloid Interface Sci. 2021 Sep 15;598:274-282. doi: 10.1016/j.jcis.2021.04.022. Epub 2021 Apr 9.
Carbonized polymer dots (CPDs) have promise in the fields of sensing, bioimaging, and optoelectronic devices due to their excellent optical properties, favorable biocompatibility, and superior stability. Biomass CPDs present greater advantages in terms of their lack of toxicity, low cost, easy preparation, and feasibility in terms of luminescence-related applications. Here, two kinds of fluorescent CPDs were obtained through the simple hydrothermal method using biomass avocado peel (CPDs-P) and sarcocarp (CPDs-S) as carbon sources. Interestingly, these two biomass CPDs have excellent applications in ion detection and light-emitting diodes (LEDs). Analysis and results show that CPDs-P possess better sensitivity to Fe because they have more oxygen-containing functional groups. After mixing with epoxy resin, warm and cold white LEDs with CIE (Commission Internationale de L 'Eclairage) coordinates (0.38, 0.39) and (0.29, 0.34) were constructed successfully from extremely stable CPDs-P and CPDs-S. The high color rendering index of the prepared white LEDs are 90.47 and 84.54. This study shows that these biomass CPDs are promising materials in sensing and white LEDs illumination.
碳化聚合物点（CPDs）因其优异的光学性能、良好的生物相容性和卓越的稳定性，在传感、生物成像和光电器件领域具有广阔前景。生物质CPDs在发光相关应用方面具有无毒、低成本、易于制备和可行性等更大优势。在此，以生物质牛油果皮（CPDs-P）和果肉（CPDs-S）为碳源，通过简单水热法获得了两种荧光CPDs。有趣的是，这两种生物质CPDs在离子检测和发光二极管（LEDs）方面具有出色应用。分析和结果表明，CPDs-P对铁具有更好的灵敏度，因为它们含有更多含氧官能团。将CPDs-P和CPDs-S与环氧树脂混合后，成功构建了CIE（国际照明委员会）坐标为(0.38, 0.39)和(0.29, 0.34)的暖白色和冷白色LEDs。所制备白色LEDs的高显色指数分别为90.47和84.54。本研究表明，这些生物质CPDs是传感和白色LEDs照明领域中有前景的材料。
