Preparation and photoluminescent analysis of Sm3+ complexes based on unsymmetrical conjugated chromophoric ligand

• Published in: Journal of materials science. Materials in electronics Vol. 33; no. 14; pp. 11132 - 11142
• Main Authors: Hooda, Anjli, Nehra, Kapeesha, Dalal, Anuj, Singh, Sitender, Bhagwan, Shri, Jakhar, Komal, Singh, Devender
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.05.2022; Springer Nature B.V
• Subjects: Antennas; Characterization and Evaluation of Materials; Chemistry and Materials Science; Colorimetry; Coordination compounds; Diketones; Emission analysis; Emission spectra; Ligands; Materials Science; NMR; Nuclear magnetic resonance; Optical and Electronic Materials; Optical properties; Optoelectronic devices; Organic light emitting diodes; Photoluminescence; Samarium; Solvents
• ISSN: 0957-4522; 1573-482X
• DOI: 10.1007/s10854-022-08089-w

The octa-coordinated complexes of Sm(III) with β -diketone and nitrogen-heterocyclic bidentate auxiliary moiety were prepared and characterized spectroscopically. Spectral outcomes of complexes have suggested the isostructural behavior of ternary complexes. Optical bandgap ( E g ) values of complexes were evaluated from Tauc’s plot. The photoluminescence emission spectra of ternary complexes show Sm 3+ -based peaks at 566, 601, 648, and 707 nm attributed to 4 G 5/2  →  6 H J ( J  = 5/2–11/2) transitions. Most intense peak at 648 nm is responsible for orange-red emanation of samarium complexes. Colorimetric analysis of complexes supports the results of emission spectra. The fascinating optical properties of ternary metal complexes in the orange-red visible spectral region might be valuable in designing optoelectronic devices and displays.