Surfactant chemistry for fluorescence imaging of latent fingerprints using conjugated polyelectrolyte nanoparticles

Kim, Beomsu Shin-Il; Jin, Young Jae; Uddin, Mohammad Afsar; Sakaguchi, Toshikazu; Woo, Han Young; Kwak, Giseop

doi:10.1039/c5cc05357a

Cited by 40 publications

(6 citation statements)

References 35 publications

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“…Generally, the surface of fingers is coated with a number of lipid components associated with both sebaceous excretion and continuous inadvertent touching of oily parts of the body such as the face and forehead. Accordingly, a consensus has emerged that the main interactions between LFP development materials and the lipids in latent fingerprints is hydrophobic in nature, rather than other interactions or chemical reactions, such as hydrogen bond formation, the chemical reaction among functional groups, electrostatic or hydrophilic interactions. − In this study, we exploited the unique properties of PVP to enhance the adhesion efficiency of FND to latent fingerprint residues. As mentioned above, PVP is amphiphilic due to the presence of both polar amide groups and nonpolar methylene and methine moieties in its structure. , Consequently, PVP can provide several interactions including hydrogen bonding from the carbonyl groups in the pyrrolidone ring, hydrophilic, and hydrophobic interactions .…”

Section: Resultsmentioning

confidence: 99%

Biocompatible Fluorescent Nanodiamonds as Multifunctional Optical Probes for Latent Fingerprint Detection

Jung

Cho

Ryu

et al. 2020

ACS Appl. Mater. Interfaces

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There is an immense literature on detection of latent fingerprints (LFPs) with fluorescent nanomaterials because fluorescence is one of the most sensitive detection methods. Although many fluorescent probes have been developed for latent fingerprint detection, many challenges remain, including the low selectivity, complicated processing, high background, and toxicity of nanoparticles used to visualize LFPs. In this study, we demonstrate biocompatible, efficient, and low background LFP detection with poly(vinylpyrrolidone) (PVP) coated fluorescent nanodiamonds (FNDs). PVP-coated FND (FND@PVP) is biocompatible at the cellular level. They neither inhibit cellar proliferation nor induce cell death via apoptosis or other cell killing pathways. Moreover, they do not elicit an immune response in cells. PVP coating enhances the physical adhesion of FND to diverse substrates and in particular results in efficient binding of FND@PVP to fingerprint ridges due to the intrinsic amphiphilicity of PVP. Clear, well-defined ridge structures with first, second, and third-level of LFP details are revealed within minutes by FND@PVP. The combination of this binding specificity and the remarkable optical properties of FND@PVP permits the detection of LPFs with high contrast, efficiency, selectivity, sensitivity, and reduced background interference. Our results demonstrate that background-free imaging via multicolor emission and dual-modal imaging of FND@PVP nanoparticles have great potential for high-resolution imaging of LFPs.

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Section: Resultsmentioning

confidence: 99%

Biocompatible Fluorescent Nanodiamonds as Multifunctional Optical Probes for Latent Fingerprint Detection

Jung

Cho

Ryu

et al. 2020

ACS Appl. Mater. Interfaces

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“…The second-level details, which represent the most characteristic features (i.e., whorl, (1), bifurcation (2), termination (3), and crossover (4)), can be clearly visualized at a higher magnification at different regions. Moreover, the third-level details, namely, the sweat pores, which can provide quantitative data for exact fingerprint recognition, are also clearly observed along the ridges, unlike the difficult visualization in other reports . In contrast to the requirement of additional postprocessing operations (e.g., heating with hot air) or a long-time incubation in material solutions in previous methods for LFP imaging (Table S4), the present is simple and time-saving without any additional post-treatment.…”

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confidence: 88%

Flexible Cyclosiloxane-Linked Fluorescent Porous Polymers for Multifunctional Chemical Sensors

et al. 2019

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The construction of porous polymers linked by flexible building units has been considered a great challenge. Here, we address this challenge by using flexible 2,4,6,8-tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxanes to react with brominated pyrene, tetraphenylethene, and spirobifluorene via the Heck reaction, resulting in three cyclosiloxane-linked fluorescent porous polymers. The materials exhibit high porosity, strong fluorescence, and tunable emission colors. Such properties impart the promise of these polymers as candidates for multifunctional chemical sensors to identify latent fingerprints with a strong anti-interference ability under actual conditions (e.g., rainy environment) and to detect nitroaromatic explosives and metal ions, especially 2,4,6-trinitrotoluene or picric acid, and the Fe3+ ion, with low limits of detection and a high selectivity. Moreover, a paper sensor was further developed and is found to be sensitive to the solution, solid, and vapor phases of explosives and the Fe3+ ion, complete with a rapid response time and visual detection. These results may open up new horizons for exploring porous polymers, particularly those with a strong fluorescence, based on flexible linkers.

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“…Kim et al synthesized four different types of conjugated polyelectrolyte dots (CPEDs) (SPDPA, F4TBTQ, F6TQ, and FPQ) and mixed these with the surfactant Tween 85 to detect sebaceous-rich fingermarks (Shin-Il Kim et al, 2015). The four different CPEDs were of different colors and hence they could be used on different colored substrates.…”

Section: Miscellaneous Types Of Npsmentioning

confidence: 99%

Nanoparticles used for fingermark detection—A comprehensive review

Kanodarwala

Moret

Spindler

et al. 2019

WIREs Forensic Science

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Nanoparticles (NPs) have been used in numerous fields such as medicine, imaging, and electronics to cite just a few. In forensic science, NPs have been researched specifically for the detection of fingermarks. Their small size, surface functionalization ability, and luminescence properties can potentially lead to better resolution, increased sensitivity, and selectivity. This paper offers an extensive review of the various NP types investigated over the past three decades. NPs are sorted into seven categories, namely metal, metal oxide, quantum dots (QDs), carbon dots (C‐dots), silica (SiO2), and upconverters NPs (UCNPs) as well as a miscellaneous section. Each type is discussed in details from a critical viewpoint. The most promising NP types are also identified. This article is categorized under: Forensic Chemistry and Trace Evidence > Fingermarks and Other Marks

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Surfactant chemistry for fluorescence imaging of latent fingerprints using conjugated polyelectrolyte nanoparticles

Cited by 40 publications

References 35 publications

Biocompatible Fluorescent Nanodiamonds as Multifunctional Optical Probes for Latent Fingerprint Detection

Biocompatible Fluorescent Nanodiamonds as Multifunctional Optical Probes for Latent Fingerprint Detection

Flexible Cyclosiloxane-Linked Fluorescent Porous Polymers for Multifunctional Chemical Sensors

Nanoparticles used for fingermark detection—A comprehensive review

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