Calculation of electric dipole intensity parameters of 4f–4f transitions of Pr(III) and glutathione reduced (GSH) complex in presence and absence of Zn(II)

Sumitra, Ch.; Singh, Th. David; Devi, M.; Singh, N. Rajmuhon

doi:10.1016/j.saa.2006.06.023

Cited by 7 publications

(3 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[5–9] Recently, there has been an increased interest in exploration of the structure functions of bimolecular reactions with lanthanide complexes. [10,11]…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and fluorescent properties of cerium(III) glutathione complex

Han¹,

Liu²

2009

Luminescence

View full text Add to dashboard Cite

The cerium (III) glutathione complex was synthesized by the redox reaction of cerium (IV) with glutathione reduced (GSH) in aqueous solution. The Job-plots indicate an ML (L = GSSG) stoichiometry of the complex. The fluorescent properties of the compound were investigated. The as-prepared complex showed the characteristic maximum emission spectra of Ce(III) at 350 nm (λ(ex) = 255 nm). The fluorescence results show that the Ce(IV) ions are first reduced to Ce(III), and then form Ce(III) complex after reacting with GSH. The complex was characterized by element analysis and FT-IR spectra; the stability of the complex was analyzed by cyclic voltammeters and DSC-TG as well. Finally, Ce(IV) was successfully employed to determine the concentrations of GSH in the presence of GSSG, in which the fluorescence intensities are proportional to the concentrations of GSH in the range of 1-100 nM with the detection limit of 0.05 nM of GSH, without interference from the presence of GSSG.

show abstract

“…[5–9] Recently, there has been an increased interest in exploration of the structure functions of bimolecular reactions with lanthanide complexes. [10,11]…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization and fluorescent properties of cerium(III) glutathione complex

Han¹,

Liu²

2009

Luminescence

View full text Add to dashboard Cite

show abstract

“…These peaks are centering at around 446 nm, 471 nm, 486 nm and 594 nm attributed to the 3 H 4 -3 P 2 , 3 H 4 -3 P 1 , 3 H 4 -3 P 0 and 3 H 4 -1 D 2 transitions respectively [20]. These peaks are considered as non-hypersensitive transitions as they do not obey the selection rule [10], but considered as pseudo hypersensitive transitions as they exhibit substantial sensitivity even with minor changes in the co-ordination environment of the complex [21,22]. The absorption spectra of Pr(III); Pr(III):l-tryptophan; Pr(III):l-tryptophan:Zn(II) in DMF solvent are shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

4f–4f Spectral Analysis and Solvent Effect for the Interaction of Pr(III) with l-Tryptophan Using Different Aquated Solvents in the Presence and Absence of Zn(II)

Naorem

Singh

2019

Chemistry Africa

View full text Add to dashboard Cite

In this study, the absorption spectra due to the interaction between Pr(III) and l-tryptophan system exhibiting 4f-4f transitions in presence and absence of Zn(II) using different aquated organic solvents such as methanol, dioxane, acetonitrile and N,N-dimethylformamide (DMF) were investigated and the same were also analyzed for the equimolar mixtures (1:1) of two different solvents. The energy parameters such as Slater-Condon (F K ) factor, Lande spin-orbit coupling constant ( 4f ), Nephelauxetic ratio ( ) , bonding parameter (b 1/2 ) and percent covalency ( ) , are also calculated and the observed variation in these parameters with the change of solvents indicates the nature of bond formed between Pr(III) and l-tryptophan. The oscillator strength (P) and Judd-Ofelt parameters T λ (λ = 2, 4, 6) have also been determined for the four transitions namely 3 H 4 to 3 P 2 , 3 P 1 , 3 P 0 and 1 D 2 .The solvent DMF has the most effective for the promotion of 4f-4f electric dipole intensity. Graphic abstractComparative absorption spectra of Pr(III):l-Tryptophan in different solvents.

show abstract

“…where υ is the energy of transition, ε molar extinction coefficient and η the refractive index of the medium, which are calculated using the procedures outlined in the previous papers [19,20]. Theoretically, the oscillator strength, P cal of the induced-dipole transition of energy (cm -1 ) in accordance with Judd-Ofelt relation [21,22] can be expressed as…”

Section: Canadian Chemical Transactionsmentioning

confidence: 99%

A Comparative Study on the Binding Interaction of Nd(III) with D-Proline and DL- Proline in Absence and Presence of Zn(II) using 4f-4f Transition Spectra as an Absorption Probe

2014

Can Chem Trans

View full text Add to dashboard Cite

The spectroscopic techniques involving comparative absorption, absorption difference and quantitative intensity analysis using 4f-4f transitions are used as a tool to understand the coordination of Nd(III) complexes with two forms of Proline (D-and DL-Proline) in absence and presence of Zn(II) in aqueous and aquated organic solvents. The changes in the oscillator strengths of different 4f-4f bands and Judd-Ofelt intensity (T λ) parameters determined experimentally is being used to investigate the coordination changes in Nd(III) complexes caused by coordinating sites of ligands, denticity, the solvent nature, coordination number, the nature of bond and other parameters to mimic the interaction of Proline with Nd(III) in presence of Zn(II). The change in symmetry around Nd(III) and covalency in metal-ligand interaction is observed and found more sensitive in case of DL-Proline in coordination with Nd(III). The energy interaction parameters like Slator-Condon (F k 's), nephelauxetic effect (β), bonding (b 1/2) and percent covalency (δ) parameters are further computed to correlate with the binding interaction of metal and ligands.

show abstract

Calculation of electric dipole intensity parameters of 4f–4f transitions of Pr(III) and glutathione reduced (GSH) complex in presence and absence of Zn(II)

Cited by 7 publications

References 25 publications

Synthesis, characterization and fluorescent properties of cerium(III) glutathione complex

Synthesis, characterization and fluorescent properties of cerium(III) glutathione complex

4f–4f Spectral Analysis and Solvent Effect for the Interaction of Pr(III) with l-Tryptophan Using Different Aquated Solvents in the Presence and Absence of Zn(II)

A Comparative Study on the Binding Interaction of Nd(III) with D-Proline and DL- Proline in Absence and Presence of Zn(II) using 4f-4f Transition Spectra as an Absorption Probe

Contact Info

Product

Resources

About