Luminescent heteroleptic samarium (III) complexes: Synthesis, optical and photophysical investigation

Dalal, Anuj; Nehra, Kapeesha; Hooda, Anjli; Bhagwan, Shri; Saini, Raman Kumar; Singh, Devender; Kumar, Sumit

doi:10.1016/j.inoche.2022.109620

Cited by 29 publications

(6 citation statements)

References 58 publications

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“…Bands due to free units get displaced after complexation with metal ion. 42,43 With the assistance of spectral profiles, optical band-gap ( E g ) was designed (eqn (1)). αℏν = α ( ℏν − E g ) n …”

Section: Resultsmentioning

confidence: 99%

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Optical, electrochemical and photophysical analyses of heteroleptic luminescent Ln(iii) complexes for lighting applications

et al. 2023

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Section: Resultsmentioning

confidence: 99%

“…Bands due to free units get displaced aer complexation with metal ion. 42,43 With the assistance of spectral proles, optical band-gap (E g ) was designed (eqn (1)). The above relation includes absorption co-efficient (a); energy of photon (ħn) and optical parameter (n).…”

Section: Absorption Spectral Studymentioning

confidence: 99%

Optical, electrochemical and photophysical analyses of heteroleptic luminescent Ln(iii) complexes for lighting applications

et al. 2023

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“…This suggests that a single exponential centre is present in all the synthesized complexes. [ 56,57 ]…”

Section: Resultsmentioning

confidence: 99%

“…This suggests that a single exponential centre is present in all the synthesized complexes. [56,57] Relative quantum yields (Φs) for the synthesized complexes were calculated by monitoring their respective emission spectral profiles.…”

Section: Luminescence Lifetime (τ) and Quantum Yield (ϕ)mentioning

confidence: 99%

Mononuclear luminous β‐diketonate Ln(III) complexes with heteroaromatic auxiliary ligands: synthesis and luminescence characteristics

et al. 2022

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A series of lanthanide (samarium and terbium) β‐diketonates with heteroaromatic auxiliary ligands was synthesized. The prepared complexes were characterized through electrochemical, thermal, and spectroscopic analyses. Infrared analysis revealed the binding of the respective metal ion to oxygen and nitrogen atoms of diketone and ancillary ligands. Thermogravimetry/differential thermogravimetry profiles provided thermal information and specified the high thermal stability of the prepared complexes. The complexes exhibited the sharp and structured Ln‐based emission in the visible region upon irradiation in the ultraviolet range. Photophysical analysis demonstrated the green and orange‐red emission due to the respective characteristic transitions of Tb3+ and Sm3+ ions. Photophysical properties affirmed the luminous behaviour of the synthesized complexes. These luminous lanthanide complexes could be used as emitting materials in the design of organic light‐emitting diodes.

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“…These changes are due to the paramagnetic behavior of Tb 3+ . [ 42–44 ] The signals of auxiliary ligands shifted upfield in complexes 1 – 4 . A large downfield shift is noticed in NMR signal of methine proton of TTFA.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of green emissive terbium(III) complexes for displays: Optical, electrochemical and photoluminescent analysis

et al. 2022

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A series of heteroleptic terbium(III) complexes with fluorinated 2-thenoyltrifluoroacetone (TTFA) and other heteroaromatic units have been synthesized. The developed heteroleptic complexes were inspected via elemental study, cyclic voltammetry, thermal analysis and spectroscopic investigations. Optical band-gap data proposed the conducting property of prepared complexes. The photoluminescence emission profiles illustrated peaks based on terbium(III) cation (Tb 3+ ) positioned at $617, 586, 546 and 491 nm, imputed to 5 D 4 to 7 F J (J = 3,4,5,6) transitions separately. Most intense peak at 546 nm corresponding to 5 D 4 ! 7 F 5 transition is accountable for the green emissive character of developed complexes.The luminous character of complexes reveals the sensitization of Tb 3+ by ligands.Color parameters further corroborates the green emanation of Tb 3+ complexes. The photometric characteristics of complexes recommended their usages in designing display devices.

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Luminescent heteroleptic samarium (III) complexes: Synthesis, optical and photophysical investigation

Cited by 29 publications

References 58 publications

Optical, electrochemical and photophysical analyses of heteroleptic luminescent Ln(iii) complexes for lighting applications

Optical, electrochemical and photophysical analyses of heteroleptic luminescent Ln(iii) complexes for lighting applications

Mononuclear luminous β‐diketonate Ln(III) complexes with heteroaromatic auxiliary ligands: synthesis and luminescence characteristics

Synthesis of green emissive terbium(III) complexes for displays: Optical, electrochemical and photoluminescent analysis

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