NaYF4 Upconversion Nanoparticles Coated with Zinc Bzimpy for High-Resolution Dual-Mode Visualization of Latent Fingerprints DOI

Xiaodan Zhu,

Honghong Li,

Yali Liu

et al.

ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 2, 2025

Language: Английский

Daylight Visualization of Latent Fingerprints Exceeding Level 3 Details through Contradictory Electrostatic and Hydrogen-Bonding Interactions DOI

Q. Huo,

Shengyu Feng, Dengxu Wang

et al.

ACS Sensors, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 12, 2025

Daylight visualization of latent fingerprints (LFPs) is highly desirable due to its convenience and safety for inspectors. However, achieving this with details exceeding level 3 using nontoxic materials presents a significant challenge. Here, we address challenge by utilizing cyclosiloxane-linked fluorescent porous polymers (FPPs) as the developers. These FPPs were synthesized from 2,4,6,8-tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane brominated monomers via Heck reactions. The resulting FPPs, available powders in various colors, exhibit high porosity strong fluorescence. By employing classical powder dusting method LFPs 1–3 become visible on substrates, including copper, iron, aluminum, tinfoil, wood, under daylight. This approach provides resolution contrast resistance background interference colored substrates. efficient attributed contradictory electrostatic hydrogen-bonding interactions between fingerprint secretions, which ensure adhesion exclusively ridges rather than furrows. Furthermore, are noncytotoxic do not impede DNA extraction identification after LFP visualization. study represents first example daylight surpassing developers, thereby mitigating risks associated material toxicity light exposure findings highlight potential developers crime scenes. straightforward broadly applicable protocol may pave way further advancements methods LFPs.

Language: Английский

Citations

0
High-Resolution Visualization of Level 3 Details for Latent Fingerprints with Color-Tunable BODIPY Dyes DOI

Senqiang Zhu,

Haitao Liao, T.C. Guo

et al.

Sensors and Actuators B Chemical, Journal Year: 2025, Volume and Issue: 433, P. 137518 - 137518

Published: Feb. 25, 2025

Language: Английский

Citations

0
Two Schiff Bases with ─N═CH─ Fragment at Different Positions of the Pyridine Skeleton on Photophysical Performances and Their Latent Fingerprint Detection DOI
Q. Jiang,

Jiazhuang Tian,

Zhi Peng

et al.

ChemistrySelect, Journal Year: 2025, Volume and Issue: 10(17)

Published: April 27, 2025

Abstract To further explore the application of Schiff bases in latent fingerprint detection, two containing ─N═CH─ fragment at different positions on pyridine skeleton, which py‐3‐TPA with 3‐position and that locating 2‐position for py‐2‐TPA , were synthesized. Both displayed solvent‐dependent behaviors organic solvents polarities emission spectra, their solid state luminescent under a UV lamp, both could be well explained by time‐dependent density functional theory calculations, aggregation‐induced properties THF/water mixtures observed. Furthermore, surfaces three substrates visualize using compounds, clearly identify levels fingerprints features details. This work establishes foundation development Schiff‐base fluorescent dyes practical field detection.

Language: Английский

Citations

0
A boronic acid functionalized fully conjugated covalent organic framework for significantly improved affinity and fluorescence detection for sialic acid DOI

Yingfei Hui,

Hao Guo, Mingyue Wang

et al.

Sensors and Actuators B Chemical, Journal Year: 2025, Volume and Issue: unknown, P. 137876 - 137876

Published: April 1, 2025

Language: Английский

Citations

0
NaYF4 Upconversion Nanoparticles Coated with Zinc Bzimpy for High-Resolution Dual-Mode Visualization of Latent Fingerprints DOI

Xiaodan Zhu,

Honghong Li,

Yali Liu

et al.

ACS Applied Nano Materials, Journal Year: 2025, Volume and Issue: unknown

Published: May 2, 2025

Language: Английский

Citations

0