A study of the fluorescent properties of spin-coated sodium salicylate thin films

Al-Kuhaili, M.F.

doi:10.1016/j.jlumin.2005.05.010

Cited by 8 publications

(3 citation statements)

References 22 publications

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“…A similar situation was observed for copper sodium salicylate thin films. 66 The observed luminescence properties (shift of the bands presented about 500 nm after coordination) make this layer a promising material, which can be used in electronic devices.…”

Section: Fluorescence Propertiesmentioning

confidence: 98%

Structural and luminescence studies of nickel(ii) and copper(ii) complexes with (1R,2R)-cyclohexanediamine derived unsymmetric Schiff base

et al. 2011

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Unsymmetrical Schiff base obtained by the condensation reaction of (1R,2R)(-)cyclohexanediamine with 2-hydroxybenzaldehyde and 2-hydroxynaphthaldehyde was used as a ligand for copper(II) and nickel(II). The ligand and complexes were characterized by circular dichroism (CD), UV-VIS, fluorescence, IR and (1)H (NOE diff), NOESY and (13)C NMR (ligand) spectra. The X-ray crystal structures solved for (1R,2R)(-)chxn(salH)(naftalH) and Cu(II)(1R,2R)(-)chxn(sal)(naftal) revealed tetrahedral distortion of coordination sphere in the solid phase. The [Cu(1R,2R)(-)chxn(sal)(naftal)]·0.5EtOH·1.25H(2)O complex crystallized in the monoclinic chiral C2 space group with two molecules in the asymmetric unit as well as disordered ethanol and water molecules. For both molecules Cu(II) ions were found in square-planar environments and adopts conformation described as "semi-open armed", because of distinctly oriented arms according to cyclohexane ring defined by three torsion angles. The thin layers of the ligands, copper(II) and nickel(II) complexes were deposited on Si(111) by a spin coating method and characterized with scanning electron microscopy SEM/EDS and fluorescence spectra. The ligand layers exhibit the most intensive fluorescence band at 498 nm, which can be assigned to emission transition π* → n of Schiff base ligand. For copper(II) layers the most intensive band from intraligand transition at 550 nm was observed. The highest intensity band was registered for the layer obtained when rotation speed was 1000 rpm and time 20 s. The nickel(II) complex layers fluorescence spectra exhibit an intensive band at 564 nm. The emission maxima of the copper(II) and nickel(II) complexes are shifted towards longer wavelength in comparison to the free ligand layers. CD spectra of the complexes in solution are characteristic for tetrahedral planar distortion of the chelate ring. The (1)H NMR NOE diff were measured and the position of the nearest hydrogen atoms in the cyclohexane and aromatic rings were discussed, suggesting the tetrahedral distortion of the central ion of the coordination sphere in solution.

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Section: Fluorescence Propertiesmentioning

confidence: 98%

Structural and luminescence studies of nickel(ii) and copper(ii) complexes with (1R,2R)-cyclohexanediamine derived unsymmetric Schiff base

et al. 2011

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“…Notably, the emission peaks for sodium salicylate (NaHSA) and its thin films appear comparably at 421.8 and 419.3 nm (l ex = 250 nm). 14 In fact, the metal-centered (MC) electronic levels are above those of the ligand-centered ones, and the typical value is at ca. 31000 cm -1 for Gd III .…”

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confidence: 99%

A luminescent linear trinuclear DyIII complex exhibiting slow magnetic relaxation of single ion origin

Liu

Sañudo

et al. 2011

Dalton Trans.

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“…The peak centred at 284.97 eV may be attributed to the CH and CC bonds due to contamination. The peaks at 286.47 eV and 289.10 eV could be attributed to COH and CCO or OCO respectively 31. It can be seen that some of the oxygen detected in the wide scan may in fact be bonded to the carbon contaminant rather than the aluminium, thus explaining both the apparent excess of oxygen and the broad O 1s signal.…”

Section: Resultsmentioning

confidence: 92%

Atmospheric Pressure Glow Discharge CVD of Al₂O₃ Thin Films

Hodgkinson

Sheel

Yates

et al. 2006

Plasma Processes & Polymers

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We report for the first time deposition of aluminium oxide thin films by APGD, plasma-enhanced CVD. This approach allows deposition at substantially lower substrate temperatures than normally used in atmospheric pressure based processing. The films are analysed by SEM, XPS, RBS, XRD, and optical properties. It is demonstrated that the APGD approach yields films which are essentially smooth, conformal and free from pinholes or other imperfections.SEM image of alumina film on glass (film G).

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A study of the fluorescent properties of spin-coated sodium salicylate thin films

Cited by 8 publications

References 22 publications

Structural and luminescence studies of nickel(ii) and copper(ii) complexes with (1R,2R)-cyclohexanediamine derived unsymmetric Schiff base

Structural and luminescence studies of nickel(ii) and copper(ii) complexes with (1R,2R)-cyclohexanediamine derived unsymmetric Schiff base

A luminescent linear trinuclear DyIII complex exhibiting slow magnetic relaxation of single ion origin

Atmospheric Pressure Glow Discharge CVD of Al₂O₃ Thin Films

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A study of the fluorescent properties of spin-coated sodium salicylate thin films

Cited by 8 publications

References 22 publications

Structural and luminescence studies of nickel(ii) and copper(ii) complexes with (1R,2R)-cyclohexanediamine derived unsymmetric Schiff base

Structural and luminescence studies of nickel(ii) and copper(ii) complexes with (1R,2R)-cyclohexanediamine derived unsymmetric Schiff base

A luminescent linear trinuclear DyIII complex exhibiting slow magnetic relaxation of single ion origin

Atmospheric Pressure Glow Discharge CVD of Al2O3 Thin Films

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Atmospheric Pressure Glow Discharge CVD of Al₂O₃ Thin Films