A new photoluminescent terbium(III) coordination network constructed from 1,2,4,5-benzenetetracarboxylic acid: Synthesis, structural characterization and application as a potential marker for gunshot residues

Silva, Mariane Alves; Campos, Nathalia Rodrigues; Ferreira, Leonildo Alves; Flores, Leonã S.; Júnior, Júlio C. A.; Santos, Gabriela Silva; Corrêa, Charlane C.; Santos, Thiago C. dos; Ronconi, Célia M.; Colaço, Marcos V.; Simões, Tatiana R. G.; Marques, Lippy F.; Marinho, Maria Vanda

doi:10.1016/j.ica.2019.118967

Cited by 23 publications

(19 citation statements)

References 62 publications

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“…The weak bands at 378 nm (C2, C4-C5) and 488 nm (C1-C5) ranging from 374-386 nm and 482-498 nm are ascribed to 7 F 6 fi 5 D 3 and 7 F 6 fi 5 D 4 transitions of the Tb 3+ ion, respectively. 30,31 The broad bands with corresponding maxima in complexes (C1-C5) are consistent with S 0 fi S 1 (p fi p * ) ligand oriented transition. The excitation spectral profile of complexes is demonstrated in Fig.…”

Section: Optical Featuressupporting

confidence: 69%

Enhanced Optoelectronic and Biological Potential of Virescent-Glowing Terbium(III) Complexes with Pyrazole Acid

Khanagwal

Kumar

Bedi

et al. 2021

Journal of Elec Materi

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A series of five virescent color emitting terbium(III) complexes is fabricated by a cost-effective and eco-friendly solution precipitation technique with the utilization of 1-(4-methoxyphenyl)-5-(trifluoromethyl)-1H-pyrazole-4-carboxylic acid (L) as a primary ligand and highly conjugated nitrogen donor secondary ligands such as bathophenanthroline (batho), 5,6-dimethyl-1,10phenanthroline (dmph), 1,10-phenanthroline (phen) and 2,2-bipyridyl (bipy). The elemental compositions of complexes are examined through energy dispersive x-ray and elemental analyses, whilst the binding nature of ligand with terbium(III) ion is confirmed using proton nuclear magnetic resonance and infrared spectroscopy. The band gap energy (E g ) of complexes is found in the range of 3.85-3.34 eV as evaluated from diffuse reflectance spectral data. The significant thermal stability of these luminescent materials (157°C) demonstrates their key role as virescent component in white organic light emitting diodes. The intense emission and decay time of complexes are explored through photoluminescent study. The good color purity and Commission International De I'Eclairage color coordinates promise the enhanced performance of these materials in lighting appliances. The sensitization phenomenon highlights the role of ligands in increasing the luminescence intensity of complexes. The biological assessment indicates that the complexes are potent antimicrobial and antioxidant agents. The aforementioned features extend the field of applications of complexes in laser technology and optoelectronic devices.

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Section: Optical Featuressupporting

confidence: 69%

Enhanced Optoelectronic and Biological Potential of Virescent-Glowing Terbium(III) Complexes with Pyrazole Acid

Khanagwal

Kumar

Bedi

et al. 2021

Journal of Elec Materi

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“…The PMA exhibits the asymmetric and symmetric stretching vibrations of -C = O (i.e., u as (-C = O) at 1690 cm À1 and u s (-C = O) at 1406 cm À1 ), which belong to the characteristic of the carboxylic acid group. [19] As for the synthesized K 4 PM, the emerged peaks at 1561, 1367, and 522 cm À1 match well with u as (-COO), u s (-COO), and the -OK out-of-plane bending vibration (i.e., u(-OK)), while the peaks of PMA at 1690 and 1406 cm À1 disappear. [19] Raman spectra (Figure 1 d) also show two peaks at 1567 and 1370 cm À1 corresponding to the u as (-COO) and u s (-COO) of K 4 PM, respectively, obviously different from the PMA.…”

supporting

confidence: 59%

“…[19] As for the synthesized K 4 PM, the emerged peaks at 1561, 1367, and 522 cm À1 match well with u as (-COO), u s (-COO), and the -OK out-of-plane bending vibration (i.e., u(-OK)), while the peaks of PMA at 1690 and 1406 cm À1 disappear. [19] Raman spectra (Figure 1 d) also show two peaks at 1567 and 1370 cm À1 corresponding to the u as (-COO) and u s (-COO) of K 4 PM, respectively, obviously different from the PMA. [19,20] Accordingly, the crystalline structure of K 4 PM is simulated as demonstrated in Figures 1 e and S2, which features the layered structure with an interlayer space of 4.71 , much larger than that of graphite materials (3.35 ), [21] possibly beneficial for the large ion storage.…”

supporting

confidence: 59%

“…[19] Raman spectra (Figure 1 d) also show two peaks at 1567 and 1370 cm À1 corresponding to the u as (-COO) and u s (-COO) of K 4 PM, respectively, obviously different from the PMA. [19,20] Accordingly, the crystalline structure of K 4 PM is simulated as demonstrated in Figures 1 e and S2, which features the layered structure with an interlayer space of 4.71 , much larger than that of graphite materials (3.35 ), [21] possibly beneficial for the large ion storage. Moreover, the typical scanning electron microscope (SEM) images of K 4 PM exhibit the lamellar structure (Figures 1 f and g) and corresponding energy disperse spectroscopy (EDS) mapping images further identify the uniform distribution of C, O, and K elements (Figure 1 h).…”

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confidence: 96%

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Novel Lamellar Tetrapotassium Pyromellitic Organic for Robust High‐Capacity Potassium Storage

et al. 2021

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Redox‐active organics are investigation hotspots for metal ion storage due to their structural diversity and redox reversibility. However, they are plagued by limited storage capacity, sluggish ion diffusion kinetics, and weak structural stability, especially for K+ ion storage. Herein, we firstly reported the lamellar tetrapotassium pyromellitic (K4PM) with four active sites and large interlayer distance for K+ ion storage based on a design strategy, where organics are constructed with the small molecular mass, multiple active sites, fast ion diffusion channels, and rigid conjugated π bonds. The K4PM electrode delivers a high capacity up to 292 mAh g−1 at 50 mA g−1, among the best reported organics for K+ ion storage. Especially, it achieves an excellent rate capacity and long‐term cycling stability with a capacity retention of ≈83 % after 1000 cycles. Incorporating in situ and ex‐situ techniques, the K+ ion storage mechanism is revealed, where conjugated carboxyls are reversibly rearranged into enolates to stably store K+ ions. This work sheds light on the rational design and optimization of organic electrodes for efficient metal ion storage.

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“…As shown in the figure, the 2θ diffraction angle peak positions of the simulated XRD pattern and the synthesised samples Eu-MOF, Tb-MOF, and Eu 0.075 Tb 0.925 -MOF are the same, and there are sharp peaks at the diffraction angles from 9 to 10. At the same time, the diffraction peaks 9 to 10 of the crystal synthesised by Silva et al [36] are basically the same, indicating that the synthesised Eu 0.075 Tb 0.925 -MOF has high purity and good crystallinity [36][37][38][39].…”

Section: Xrd Characterisationmentioning

confidence: 57%

Preparation of Eu0.075Tb0.925-Metal Organic Framework as a Fluorescent Probe and Application in the Detection of Fe3+ and Cr2O72−

Yin

Chu

Qin

et al. 2021

Sensors

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Luminescent Ln-MOFs (Eu0.075Tb0.925-MOF) were successfully synthesised through the solvothermal reaction of Tb(NO3)3·6H2O, Eu(NO3)3·6H2O, and the ligand pyromellitic acid. The product was characterised by X-ray diffraction (XRD), TG analysis, EM, X-ray photoelectron spectroscopy (XPS), and luminescence properties, and results show that the synthesised material Eu0.075Tb0.925-MOF has a selective ratio-based fluorescence response to Fe3+ or Cr2O72−. On the basis of the internal filtering effect, the fluorescence detection experiment shows that as the concentration of Fe3+ or Cr2O72− increases, the intensity of the characteristic emission peak at 544 nm of Tb3+ decreases, and the intensity of the characteristic emission peak at 653 nm of Eu3+ increases in Eu0.075Tb0.925-MOF. The fluorescence intensity ratio (I653/I544) has a good linear relationship with the target concentration. The detection linear range for Fe3+ or Cr2O72− is 10–100 μM/L, and the detection limits are 2.71 × 10−7 and 8.72 × 10−7 M, respectively. Compared with the sensor material with a single fluorescence emission, the synthesised material has a higher anti-interference ability. The synthesised Eu0.075Tb0.925-MOF can be used as a highly selective and recyclable sensing material for Fe3+ or Cr2O72−. This material should be an excellent candidate for multifunctional sensors.

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A new photoluminescent terbium(III) coordination network constructed from 1,2,4,5-benzenetetracarboxylic acid: Synthesis, structural characterization and application as a potential marker for gunshot residues

Cited by 23 publications

References 62 publications

Enhanced Optoelectronic and Biological Potential of Virescent-Glowing Terbium(III) Complexes with Pyrazole Acid

Enhanced Optoelectronic and Biological Potential of Virescent-Glowing Terbium(III) Complexes with Pyrazole Acid

Novel Lamellar Tetrapotassium Pyromellitic Organic for Robust High‐Capacity Potassium Storage

Preparation of Eu0.075Tb0.925-Metal Organic Framework as a Fluorescent Probe and Application in the Detection of Fe3+ and Cr2O72−

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