Barros Hélio L, Bonifácio Vasco D B
iBB-Institute for Bioengineering and Biosciences and i4HB-Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
iBB-Institute for Bioengineering and Biosciences and i4HB-Institute for Health and Bioeconomy, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; Bioengineering Department, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
J Colloid Interface Sci. 2025 May;685:685-695. doi: 10.1016/j.jcis.2025.01.134. Epub 2025 Jan 20.
A green approach towards the synthesis of both conventional and magnetic fluorescent powders for revealing latent fingerprints (FPs) is disclosed. The powders formulation is based on a biodegradable matrix and fluorescent dyes extracted from commercial felt-tip markers. Two classes of powders are described: one with a fluorescent component, and other with both fluorescent and magnetic components. The incorporation of the magnetic component not only enables easy manipulation but also eliminates the risk of latent print ridge destruction. Optimization of the mechanosynthesis parameters allowed the development of magnetic powders with intense fluorescence emission, avoiding quenching caused by the magnetic component. The new powders proved to be highly efficient in revealing latent FPs on a variety of surfaces of forensic interests. The efficacy of these powders was demonstrated by comparison with commercial fluorescent magnetic and non-magnetic powders. The novel powders, prepared using a green protocol and biodegradable matrices, display excellent fluorescence properties, are cost-effective, easy to manipulate, and offer a significant advancement in fingerprint detection.
公开了一种用于合成传统荧光粉和磁性荧光粉以显现潜在指纹（FPs）的绿色方法。粉末配方基于可生物降解的基质和从商用毡尖笔中提取的荧光染料。描述了两类粉末：一类具有荧光成分，另一类具有荧光和磁性成分。磁性成分的加入不仅便于操作，还消除了潜在指纹纹路被破坏的风险。机械合成参数的优化使得能够开发出具有强烈荧光发射的磁性粉末，避免了由磁性成分引起的猝灭。新粉末在多种法医相关表面上显现潜在指纹方面被证明是高效的。通过与商用荧光磁性和非磁性粉末比较，证明了这些粉末的有效性。使用绿色方案和可生物降解基质制备的新型粉末具有优异的荧光性能，成本效益高，易于操作，并且在指纹检测方面取得了重大进展。
