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Facile LaOF: Sm3+ based labeling agent and their applications in residue chemistry of latent fingerprint and cheiloscopy under UV–visible light.
- Source :
- Arabian Journal of Chemistry; May2018, Vol. 11 Issue 4, p460-482, 23p
- Publication Year :
- 2018
-
Abstract
- Luminescent lanthanum oxyfluoride nano inorganic materials were considered to be prospective building blocks for multifunctional applications. This offers new potentials in surface-based science comprising of visualization of latent fingerprint (LFPs) and lips print on non-porous surfaces. Traditional visualization techniques possess high backward hindrance, low sensitivity, complicated setup and poor visibility. To overcome with these problems, LaOF:Sm 3+ (5 mol%) nanopowder (NPs) prepared via sonochemical route were explored. Photoluminescence (PL) emission spectra exhibit strong emission peaks at ∼566 nm, 607 nm, 653 nm and 708 nm attributed to 4 G 5/2 → 6 H 5/2 , 4 G 5/2 → 4 H 7/2 , 4 G 5/2 → 6 H 9/2 and 4 G 5/2 → 6 H 11/2 intra-4f orbital transitions of Sm 3+ ions respectively. Estimated photometric properties confirm that the material emits warm orange red color. Therefore, the synthesized phosphor materials may quite be useful for LFPs recovery, cheiloscopy and optoelectronics applications. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 18785352
- Volume :
- 11
- Issue :
- 4
- Database :
- Supplemental Index
- Journal :
- Arabian Journal of Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 129508193
- Full Text :
- https://doi.org/10.1016/j.arabjc.2017.09.014