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Luminescent Features of Ternary Europium Complexes: Photophysical and Optoelectronic Evaluation

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Abstract

Trivalent europium complexes exhibit good luminescent characteristics. A series of octacoordinated ternary europium complexes with fluorinated diketone and heteroaromatic auxiliary unit were synthesized. The synthesized europium complexes were characterized by elemental, thermal, electrochemical and spectroscopic analyses. Band gap values lie in range of semiconductors which confirm the conducting behavior of prepared complexes. Photoluminescence spectra were recorded in solid state and DMSO solvent. Emission spectral profiles have displayed most intense peak at ~ 612 nm corresponding to hypersensitive 5D0 → 7F2 transition. Colorimetric parameters suggest red luminous nature of europium complexes. The luminescent heteroleptic europium complexes might be utilized as emissive materials for fabricating display.

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Funding

The author (AH) would like to thanks CSIR for SRF [09/382(0255)/2020-EMR-I] and SERB-DST [EMR/2016/006135], New Delhi for providing support for preceding the presented work.

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Authors and Affiliations

  1. Department of Chemistry, Maharshi Dayanand University, Rohtak, 124001, India

    Anjli Hooda, Kapeesha Nehra, Anuj Dalal, Shri Bhagwan, Isha Gupta & Devender Singh

  2. Department of Chemistry, DCR University of Science & Technology, Murthal, Haryana, 131039, India

    Sumit Kumar

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  1. Anjli Hooda
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  6. Devender Singh
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Contributions

Anjli Hooda = Data curation, Writing—original draft; Kapeesha Nehra = Investigation, Methodology; Anuj Dalal = Formal analysis; Shri Bhagwan = Project administration; Isha Gupta = Resources; Devender Singh = Writing—review & editing, Supervision Sumit Kumar = Validation, Visualization and Software.

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Correspondence to Devender Singh.

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Highlights

• Structural and photophysical investigation of luminescent red color emissive ternary europium complexes was carried out.

• Optical and electronic band gap values were found in good accordance with each other as well as to the theoretically determined band gap values.

• Geometry optimization was done via Avogadro software and energies of various frontier molecular orbitals have been estimated.

• Luminous red emissive materials could found good significance in solid state electronics and displays.

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Hooda, A., Nehra, K., Dalal, A. et al. Luminescent Features of Ternary Europium Complexes: Photophysical and Optoelectronic Evaluation. J Fluoresc 32, 1529–1541 (2022). https://doi.org/10.1007/s10895-022-02956-9

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