Synthesis and Photophysical Characteristics of Samarium-based Complexes for Optoelectronic and Latent Fingerprint Applications.

IF 2.6 4区 化学 Q2 BIOCHEMICAL RESEARCH METHODS
Shagun Goyat, Vaishnavi Lather, Aarti Khatkar, Bhawna Rathee, V B Taxak, S P Khatkar, Pratibha Ahlawat, Poonam Kumari, Vipin Kumar, Rajesh Kumar
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引用次数: 0

Abstract

In this study, five orange-red color samarium (Sm(III)) complexes were prepared using a solution precipitation method, with 9,10-Difluoro-2,3-dihydro-3-methyl-7-oxo-7H-pyrido[1,2,3-de]-1,4-benzoxazine-6-carboxylic acid as the primary ligand and nitrogen-donor like 1,10-phenanthroline, 2,2-biquinoline, neocuproine, and 2,2-bipyridyl as secondary ligands. The complexes were characterized using various spectral techniques, elemental analysis CHN, energy-dispersive X-ray spectroscopy (EDX), ultraviolet-visible (UV-vis), Fourier-transform infrared (FTIR), nuclear magnetic resonance (NMR) and thermal analyses by thermogravimetric analysis (TGA), differential thermal analysis (DTA). Photoluminescence spectroscopy revealed bright orange-red emissions due to the 4G5/2 → 6H7/2 transition at 605 nm in solid and 598 nm in solution, with color coordinates confirming their emission in the orange region. Structural evaluations using powder X-ray diffraction (PXRD) and scanning electron microscopy (SEM) confirmed that the complexes exhibit nanoparticle size and crystalline structure, showing their application in forensic science in latent fingerprint detection. Computational studies of highest occupied molecular orbital (HOMO)-lowest unoccupied molecular orbital (LUMO) energy levels, Judd-Ofelt parameters, radiative properties, band gap, and Urbach energy indicate their potential for optoelectronic and semiconductors. The high color purity of 87.70% in solution and 77.50% in solid make them important for laser emission.

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来源期刊
Journal of Fluorescence
Journal of Fluorescence 化学-分析化学
CiteScore
4.60
自引率
7.40%
发文量
203
审稿时长
5.4 months
期刊介绍: Journal of Fluorescence is an international forum for the publication of peer-reviewed original articles that advance the practice of this established spectroscopic technique. Topics covered include advances in theory/and or data analysis, studies of the photophysics of aromatic molecules, solvent, and environmental effects, development of stationary or time-resolved measurements, advances in fluorescence microscopy, imaging, photobleaching/recovery measurements, and/or phosphorescence for studies of cell biology, chemical biology and the advanced uses of fluorescence in flow cytometry/analysis, immunology, high throughput screening/drug discovery, DNA sequencing/arrays, genomics and proteomics. Typical applications might include studies of macromolecular dynamics and conformation, intracellular chemistry, and gene expression. The journal also publishes papers that describe the synthesis and characterization of new fluorophores, particularly those displaying unique sensitivities and/or optical properties. In addition to original articles, the Journal also publishes reviews, rapid communications, short communications, letters to the editor, topical news articles, and technical and design notes.
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