Abstract
Ternary octacoordinated terbium complexes with 4,4,4-trifluoro-1-(2-naphthyl)-1,3-butanedione (TFNB) and substituted 2,2′-bipyridine derivatives were synthesized and investigated in detail. From Tauc’s relation, optical band gap was determined which suggests the conducting nature of terbium complexes. Results of spectral analyses have suggested that paramagnetic Tb3+ ion binds with three TFNB and one respective substituted 2,2′-bipyridine derivative via oxygen and nitrogen atoms, respectively. Upon excitation in UV region, characteristic peaks corresponding to Tb3+ ion were appeared in emission spectra of complexes. Most intense peak at 548 nm (5D4 → 7F5) is responsible for green color of synthesized metal complexes. Color parameters of complexes claim their high green luminous character. Synthesized terbium complexes can be used as emanating material in OLEDs and other display devices.
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The author, Anuj Dalal wants to thank to [EMR/2016/006135] from the SERB-DST, New Delhi for financial assistance and MDU, Rohtak for URS for proceeding the research work.
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AD contributed to data curation and writing of the original draft; KN contributed to investigation and methodology; AH performed formal analysis; RKS contributed to project administration; DS contributed to writing, reviewing, and editing of the manuscript, resources, and supervision; SK contributed to validation and visualization; RSM contributed to resources and software.
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Dalal, A., Nehra, K., Hooda, A. et al. Preparation and optoelectronic enhancement of trivalent terbium complexes with fluorinated β-diketone and bidentate ancillary ligands. J Mater Sci: Mater Electron 33, 12984–12996 (2022). https://doi.org/10.1007/s10854-022-08240-7
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DOI: https://doi.org/10.1007/s10854-022-08240-7