Manoj Kumar Selin, Munusamy Sathishkumar, Enbanathan Saravanan, Kulathu Iyer Sathiyanarayanan
Department of Chemistry, School of Advanced Sciences and Vellore Institute of Technology, Vellore 632014, India.
Department of Chemistry, University of Missouri-Columbia, Columbia, Missouri 65211, United States.
J Org Chem. 2024 Dec 6;89(23):17090-17100. doi: 10.1021/acs.joc.4c01387. Epub 2024 Oct 23.
Aggregation-induced emission luminogens (AIEgens) are widely used in the realm of latent fingerprint visualization owing to their luminosity and resistance to photobleaching. However, challenges such as significant background interference and limited resolution hinder their rapid advancement. Consequently, there is a pressing need to improve the detailed visualization of latent fingerprint (LFP) imaging, particularly for analyzing level 3 details. To address this, we have designed donor-acceptor (D-A) type AIEgens named , , and . These compounds exhibit robust emissions ranging from 481 to 552 nm and signify positive fluorosolvatochromism. When applied as powder dusting, these derivatives enable the fluorescence imaging of LFPs on various material substrates. The analysis of these imaged LFPs yields intricate details regarding fingerprint ridge patterns. Our results underscore the potential of highly emissive AIEgens , , and as promising candidates for fingerprint visualization, thus offering significant implications for forensic investigations. Furthermore, these derivatives serve as effective fluorescent security inks for writing and drawing, presenting a novel avenue for robust anticounterfeiting applications.
聚集诱导发光 luminogens（AIEgens）因其发光性和抗光漂白性而被广泛应用于潜在指纹可视化领域。然而，诸如显著的背景干扰和有限的分辨率等挑战阻碍了它们的快速发展。因此，迫切需要改进潜在指纹（LFP）成像的详细可视化，特别是用于分析三级细节。为了解决这个问题，我们设计了供体 - 受体（D - A）型 AIEgens，命名为 、 和 。这些化合物表现出从 481 到 552 nm 的强发射，并显示出正的氟溶剂化显色性。当用作粉末撒粉时，这些衍生物能够对各种材料基板上的 LFP 进行荧光成像。对这些成像的 LFP 进行分析可得出有关指纹纹路图案的复杂细节。我们的结果强调了高发射性 AIEgens 、 和 作为指纹可视化有前途的候选物的潜力，从而为法医调查提供了重要意义。此外，这些衍生物用作书写和绘图的有效荧光防伪墨水，为强大的防伪应用提供了一条新途径。
