Fluorescent‐Labeled Octasilsesquioxane Nanohybrids as Potential Materials for Latent Fingerprinting Detection. Issue 58 (17th September 2020)

• Record Type: Journal Article
• Authors: Dare, Enock O.; Vendrell‐Criado, Victoria; Consuelo Jiménez, M.; Pérez‐Ruiz, Raúl; Díaz Díaz, David
• Is Part Of: Chemistry. Volume 26:Issue 58(2020)
• Page Start: 13142
• Page End: 13146
• Publication Date: 2020-09-17
• Subjects: click chemistry -- fingerprint identification -- fluorophores -- photostability -- silsesquioxanes; Chemistry -- Periodicals; 540
• DOI: 10.1002/chem.202001908
• Languages: English
• ISSNs: 0947-6539

Abstract

Abstract: The recent demand for fluorescent‐labeled materials (FLMs) in forensic security concepts such as latent fingerprints (LFs) that encode information for anti‐counterfeiting and encryption of confidential data makes necessary the development of building new and innovative materials. Here, novel FLMs based on polyhedral oligomeric silsesquioxanes (POSS) functionalized with fluorophores via "click" reactions have been successfully synthesized and fully characterized. A comprehensive study of their photophysical properties has displayed large Stokes's shift together with good photostability in all cases, fulfilling the fundamental requisites for any legible LF detection on various surfaces. The excellent performance of the hetero‐bifunctional FLM in the visualization of LF is emphasized by their legibility, selectivity, sensitivity and temporal photostability. In this study, development mechanisms have been proposed and the overall concept constitute a novel approach for vis‐à‐vis forensic investigations to trace an individual's identity. Abstract : A series of fluorescent‐labeled nanohybrids based on polyhedral oligomeric silsesquioxanes (POSS) linked to appropriate fluorophores via "click" chemistry can be used to visualize latent fingerprints on several surfaces, providing reasonable legibility patterns that satisfy the requirements for fingerprinting identification in forensic technology.