Novel bifunctional lanthanide‐centered nanophosphors for latent fingerprint detection and anti‐counterfeiting applications

Saif, M.; Fouad, R.

doi:10.1002/aoc.5131

Cited by 5 publications

(2 citation statements)

References 27 publications

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“…ending. Minutiae of level 3 is represented with sweat pores . Also, it has been observed that the latent print features (level 1–3) appeared more clearly under UVA illumination than normal light (Figure ).…”

Section: Applicationsmentioning

confidence: 89%

Synthesis and Fundamental Characterization of Diverse Properties of Biocompatible Cd (II) Phosphor Complex for Cytotoxic Activity and Latent Fingerprint Detection

Fouad

2020

Applied Organom Chemis

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The development of biocompatible fluorescent materials based on CdII (d10) systems for cytotoxic application and latent fingerprint detection under UV illumination has not yet been studied that thoroughly. In this sense, this work presents production of novel and dual nature pure Cd (II) phosphor complex based on ρ‐dimethylaminobenzaldehyde thiosemicarbazone ligand (H‐DMABTS). The structural characterization confirms that the ligand which acts as monoanionic bidentate through NS donor sites, forming mononuclear complex formulates as: [Cd (DMABTS)2(C2H5OH)2] where, DMABTS = anionic form of ρ‐dimethylaminobenzaldehyde thiosemicarbazone. TEM analysis shows that Cd (II) complex has sheet like shape in micro scale. Moreover, the Cd (II) complex was dispersed into silica host. Photoluminescence emission and lifetime of H‐DMABTS ligand, Cd (II) complex and Cd (II) complex dispersied into silica were measured. Cd (II) complex is intensive luminescent with impressive visual emission under UV excitation. All fluorescent materials were tested for their in vitro cytotoxicity against HepG‐2 cell line. The Cd (II) phosphor complex shows higher activity (IC50 = 0.005 μM) than other prepared materials and different standard antitumor drugs. Furthermore, the Cd (II) phosphor complex has a lower toxicity value (LD50 = 130 mg/Kg) relative to the standard cis‐platin (LD50 = 13.5 mg/Kg). Moreover, latent prints details, including their characteristic three levels, have been clearly identified from various forensic substrates (non‐porous, semi‐porous, porous) using Cd (II) phosphor complex.

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Section: Applicationsmentioning

confidence: 89%

Synthesis and Fundamental Characterization of Diverse Properties of Biocompatible Cd (II) Phosphor Complex for Cytotoxic Activity and Latent Fingerprint Detection

Fouad

2020

Applied Organom Chemis

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“…Lanthanide complexes are studied extensively for applications in illuminating and displaying materials 1 , lasers 2 , optical amplifiers 3 , light convertors 4 , imaging probes in living tissue analysis, and others. 5,6 Based on different assembling compositions and exciting conditions, an up-conversion luminescence (UCL) or down-conversion luminescence (DCL) could be engendered and utilized.…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient DCL, UCL, and TPEF in Hybridized Ln-Complexes from Ir-Metalloligand

Zheng

et al. 2021

CCS Chem

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In molecular level lanthanide complexes, it is still challenging to achieve near-infrared (NIR) down-conversion luminescence (DCL) and visible up-conversion luminescence (UCL) efficiently under ambient conditions. By delicate design of hybridized iridium−europium−ytterbium (Ir-Eu-Yb) trimetallic complexes from an Ir-metalloligand, DCL and UCL emissions with opposite photon conversion pathways were achieved simultaneously in one integrated system. In detail, three different types of energy transfer (ET) and photoluminescence (PL) were detected, as follows: (1) Highly sensitized NIR-DCL from Yb(III) center via ET Ir→Eu→Yb , which gave the longest decay lifetime (553 μs) at room temperature ever reported in solid-state Yb-complexes. (2) Unprecedented UCL red emission from Eu(III) center via ET Yb→Eu using 980 nm continuous wavelength (CW) laser excitation, which required ultralow energy threshold (0.616 W/cm 2 ). (3) Two-photon excited fluorescence (TPEF) via ET Ir→Eu using femtosecond pulsed laser excitation. This exquisite module of "one stone, three birds" provides a new stimulus in the design and application of multifunctional UCL/DCL/ TPEF optical materials under ambient conditions.

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Forensic applications of rare earths: Anticounterfeiting materials and latent fingerprint developers

Truccolo

Boseley

Lewis

et al. 2020

Including Actinides

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Novel bifunctional lanthanide‐centered nanophosphors for latent fingerprint detection and anti‐counterfeiting applications

Cited by 5 publications

References 27 publications

Synthesis and Fundamental Characterization of Diverse Properties of Biocompatible Cd (II) Phosphor Complex for Cytotoxic Activity and Latent Fingerprint Detection

Synthesis and Fundamental Characterization of Diverse Properties of Biocompatible Cd (II) Phosphor Complex for Cytotoxic Activity and Latent Fingerprint Detection

Highly Efficient DCL, UCL, and TPEF in Hybridized Ln-Complexes from Ir-Metalloligand

Forensic applications of rare earths: Anticounterfeiting materials and latent fingerprint developers

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