College of Chemistry, Green Catalysis Center, Henan Joint International Research Laboratory of Green Construction of Functional Molecules and Their Bioanalytical Applications, Zhengzhou University, Zhengzhou, 450001, China.
Department of Criminal Science and Technology, Henan Police Academy, Zhengzhou, 450046, China.
Anal Chim Acta. 2022 May 29;1209:339864. doi: 10.1016/j.aca.2022.339864. Epub 2022 Apr 25.
Latent fingerprints (LFPs) powders play a crucial part in the detection of LFPs by powder-dusting methods in forensic sciences, due to the facile, onsite, and easy-to-operate properties. However, conventional LFPs powders suffer from some drawbacks, such as high toxicity, low contrast, sensitivity and selectivity. Herein, a novel fluorescent composite powder was synthesized and used for the detection of LFPs. The resultant composite powder shows an enhanced fluorescence due to the protection of the emission of fluorescent carbonized nanoparticles (FCNPs) from being quenched in the solid state. Subsequently, the fluorescent composite powder was successfully applied to detect LFPs on various substrates. This work provides a promising strategy for developing FCNPs-based fluorescent powders for the detection of LFPs in forensic science.
潜伏指纹（LFPs）粉末在法庭科学中的粉末显影方法中对 LFPs 的检测起着至关重要的作用，因为它具有简便、现场操作和易于操作的特点。然而，传统的 LFPs 粉末存在一些缺点，例如高毒性、低对比度、灵敏度和选择性。在此，合成了一种新型荧光复合粉末，并将其用于 LFPs 的检测。由于荧光碳化纳米粒子（FCNPs）在固态下的发射被保护，从而增强了所得复合粉末的荧光。随后，成功地将荧光复合粉末应用于各种基底上 LFPs 的检测。这项工作为开发基于 FCNPs 的荧光粉末用于法庭科学中 LFPs 的检测提供了一种很有前途的策略。
