New fluorescent electrospun polymer materials containing phenothiazinyl carboxylate metal salts for versatile latent fingerprint detection

被引：4

作者：

Gal, Melinda ^{[1
]}

Cristea, Castelia ^{[1
]}

Craciun, Ana Maria ^{[2
]}

Turza, Alexandru ^{[3
]}

Barbu-Tudoran, Lucian ^{[4
,5
]}

Balazs, Brem ^{[1
]}

Lovasz, Tamas ^{[1
]}

Silaghi-Dumitrescu, Luminita ^{[1
]}

Gaina, Luiza Ioana ^{[1
]}

机构：

[1] Babes Bolyai Univ, Fac Chem & Chem Engn, Res Ctr Fundamental & Appl Heterochem, 11 Arany Janos str, RO-400028 Cluj napoca, Romania

[2] Babes Bolyai Univ, Interdisciplinary Res Inst Bionano Sci, Nanobiophoton & Laser Microspect Ctr, 42 Treboniu Laurian str, Cluj napoca 400271, Romania

[3] Natl Inst Res & Dev Isotop & Mol Technol, Dept Mass Spectrometry Chromatog & Appl Phys, 67-103 Donat str, RO-400293 Cluj napoca, Romania

[4] Babes Bolyai Univ, Fac Biol & Geol, Electron Microscopy Ctr Prof C Craciun, 5-7 Clinicilor Str, Cluj napoca 400006, Romania

[5] Natl Inst R&D Isotopic& Mol Technol, Electron Microscopy Integrated Lab, 67-103 Donat Str, Cluj napoca 400293, Romania

来源：

DYES AND PIGMENTS | 2023年 / 211卷

关键词：

Phenothiazinyl carboxylate salts; Fluorescent electrospun polymer; Latent fingerprint detection; Fluorescence lifetime imaging microscopy; (FLIM); Scanning electron microscopy (SEM); Single crystal XRD; MICROWAVE-ASSISTED SYNTHESIS; FINGERMARKS; DERIVATIVES; NANOPARTICLES; NANOMATERIALS; RECOGNITION; REAGENTS;

D O I：

10.1016/j.dyepig.2023.111085

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

In this work the synthesis and structural characterization by NMR and single crystal X-Ray Diffraction of four new phenothiazine-carboxylate salts (lithium, sodium, potassium, and calcium salts respectively) is reported together with a description of their use as contrast agents in the fabrication of new fluorescent electrospun polyvinylpyrrolidone nanomaterials suitable for latent fingerprint (LFP) detection were reported. The optical properties of the new fluorophores and fluorescent electrospun polymer (FEP) nanomaterials (lambda em = 448-467 nm) were evaluated by UV-Vis absorption/emission spectroscopy. Fluorescence lifetime imaging microscopy (FLIM) analysis indicated an intense and uniform fluorescence in solid state, with fluorescence lifetime increasing significantly for FEP material (8-11 ns) in comparison to the correspondent blank fluo-rophore. Scanning electron microscopy (SEM) investigations revealed the size of the new FEP materials situated in the nanometric range with fiber or granular morphology. The newly synthesized FEP nanomaterials were successfully tested in the detection of LFP from various smooth or porous surfaces such as glass, metal, plastic, ceramic or wood and demonstrated a versatile capability of direct visualization in UV and daylight of enhanced LFP, as well as of primary lifts collected by gently pressing the polymeric mats on the tested surfaces. The quality of the collected LFPs images was determined mainly by the fluorophore structure, best visualization results being obtained with the phenothiazine sodium carboxylate salt. The new FEP nanomaterials appear suitable for highly accurate forensic investigations, supporting a direct analysis by photography, an expeditive and non-hazardous alternative for avoiding the disadvantages of tech-niques such as dusting or chemical treatment currently applied in the dactyloscopic identification of a suspect person at the crime scene.

引用

页数：11

共 34 条

[11] Microwave-assisted synthesis of phenothiazine and quinoline derivatives [J].