Imaging Latent Fingerprints by Electrochemiluminescence

Xu, Linru; Li, Yan; Wu, Suozhu; Liu, Xianghong; Su, Bin

doi:10.1002/ange.201203815

Cited by 64 publications

(18 citation statements)

References 72 publications

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“…Fig. 331 In one method (negative mode), the negative image of fingermarks were produced by directly exposing the electrode bearing fingermarks to solution of tris(2,2'-bipyridyl) 65 ruthenium(II) ([Ru(bpy)3]2+) and tri-n-propylamine (TPrA). The image was obtained at an applied potential of -0.7 V in a 0.1 M Tris-HCl buffer solution (pH 8.5, sodium salts) containing 0.5 mM luminol and 0.23 mM p-iodophenol.…”

Section: Other Anti-counterfeiting Applications Based On Electroluminmentioning

confidence: 99%

Future prospects of luminescent nanomaterial based security inks: from synthesis to anti-counterfeiting applications

2016

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Counterfeiting of valuable documents, currency and branded products is a challenging problem that has serious economic, security and health ramifications for governments, businesses and consumers all over the world. It is estimated that counterfeiting represents a multi-billion dollar underground economy with counterfeit products being produced on a large scale every year. Counterfeiting is an increasingly high-tech crime and calls for high-tech solutions to prevent and deter the acts of counterfeiting. The present review briefly outlines and addresses the key challenges in this area, including the above mentioned concerns for anti-counterfeiting applications. This article describes a unique combination of all possible kinds of security ink formulations based on lanthanide doped luminescent nanomaterials, quantum dots (semiconductor and carbon based), metal organic frameworks as well as plasmonic nanomaterials for their possible use in anti-counterfeiting applications. Moreover, in this review, we have briefly discussed and described the historical background of luminescent nanomaterials, basic concepts and detailed synthesis methods along with their characterization. Furthermore, we have also discussed the methods adopted for the fabrication and design of luminescent security inks, various security printing techniques and their anti-counterfeiting applications.

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Section: Other Anti-counterfeiting Applications Based On Electroluminmentioning

confidence: 99%

Future prospects of luminescent nanomaterial based security inks: from synthesis to anti-counterfeiting applications

2016

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“…However, these traditional techniques are inevitably associated with serious problems in developing latent fingermarks, such as high toxicity, low detection sensitivity, and high background interference. Numerous efforts have been made in recent years to improve the existing techniques for better visualization of the LFPs, especially the use of quantum dots (QDs), 6 electrochemistry (ECL) 7,8 , immunological multimetal deposition (iMMD) 2 and mass spectrometry. 9 However, some of these methods require heavy instrumentation, complex procedures, environmental unfriendly or expensive materials, and materials with less sensitivity.…”

Section: Nir Luminescence For the Detection Of Latent Fingerprints Bamentioning

confidence: 99%

NIR luminescence for the detection of latent fingerprints based on ESIPT and AIE processes

Jin

Dong

et al. 2015

RSC Adv.

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“…Recently, new techniques such as electrochemiluminescence and nanotechnology have been applied toward the enhanced development of latent fingermarks [6–11]. In particular, the use of fluorescent nanoparticles (NPs), such as quantum dots (QDs), for the development of latent fingermarks has attracted significant research interest in forensic science [12–18]; this is because of their unique physical and chemical properties such as small particle size, large surface area, good photochemical stability, and high fluorescent intensity.…”

Section: Introductionmentioning

confidence: 99%

NIR-induced highly sensitive detection of latent fingermarks by NaYF4:Yb,Er upconversion nanoparticles in a dry powder state

et al. 2015

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The most commonly found fingermarks at crime scenes are latent and, thus, an efficient method for detecting latent fingermarks is very important. However, traditional developing techniques have drawbacks such as low detection sensitivity, high background interference, complicated operation, and high toxicity. To tackle this challenge, we employed fluorescent NaYF4:Yb,Er upconversion nanoparticles (UCNPs), which can fluoresce visible light when excited by 980 nm human-safe near-infrared light, to stain the latent fingermarks on various substrate surfaces. The UCNPs were successfully used as a novel fluorescent label for the detection of latent fingermarks with high sensitivity, low background, high efficiency, and low toxicity on various substrates including non-infiltrating materials (glass, marble, aluminum alloy sheets, stainless steel sheets, aluminum foils, and plastic cards), semi-infiltrating materials (floor leathers, ceramic tiles, wood floor, and painted wood), and infiltrating materials such as various types of papers. This work shows that UCNPs are a versatile fluorescent label for the facile detection of fingermarks on virtually any material, enabling their practical applications in forensic sciences.

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Imaging Latent Fingerprints by Electrochemiluminescence

Cited by 64 publications

References 72 publications

Future prospects of luminescent nanomaterial based security inks: from synthesis to anti-counterfeiting applications

Future prospects of luminescent nanomaterial based security inks: from synthesis to anti-counterfeiting applications

NIR luminescence for the detection of latent fingerprints based on ESIPT and AIE processes

NIR-induced highly sensitive detection of latent fingermarks by NaYF4:Yb,Er upconversion nanoparticles in a dry powder state

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