Crystal growth, structural, optical, thermal and NLO studies of γ-glycine single crystals

Azhagan, S. Anbu Chudar; Ganesan, S.

doi:10.1016/j.ijleo.2013.05.030

Cited by 18 publications

(4 citation statements)

References 21 publications

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“…As in the case of glycine in this forming material, the peak shifts to 607, 1388, and 1570 cm -1 (Ahamed et al, 2013, Sankar et al, 2010. Observed at the peak of 1389 cm -1 , there was a stretching of the COO-symmetric carboxylate group according to the reported value of literature (Azhagan & Ganesan, 2013). In addition, peaks in the wavenumbers 1125, 1489, 2600 cm -1 are shifted from the values presented in the literature at wavenumbers 1133, 1507, and 2614 cm -1 of the ammonium group (NH 3+ ) (Ahamed et al, 2013).…”

Section: Fourier Transform Infrared (Ftir) Analysissupporting

confidence: 78%

“…The peaks were observed at wavenumbers 889 and 1044 cm -1 which are asymmetric and symmetric CCN stretches. Whereas the peaks observed at wavenumbers 926, 1322, and 1435 cm -1 are respectively CH2 rocking, CH2 twisting, and CH2 bending (Azhagan & Ganesan, 2013). So from the analysis of the three row materials, it was found that there were several new absorption peaks that appeared, and some absorptive peaks were lost as shown in Figure 13.…”

Section: Fourier Transform Infrared (Ftir) Analysismentioning

confidence: 97%

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A Physical Chemistry Study of Black Powder Materials by Solution Combustion Synthesis Method

et al. 2021

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A study on the synthesis of black powder (La2NiO4) material using the solution combustion synthesis method at a variation of synthesis temperature of 60, 70, and 80Â°C was carried out. It produces a mass of black powder of 2 grams by four times of synthesis process. Then, material characterization was performed on the black powder samples obtained by using X-ray Diffraction (XRD) to determine the phases formed, Scanning Electron Microscopy - Energy Dispersive X-ray Spectroscopy (SEM-EDS) to determine the morphology and analyze the composition elemental on the microscale and Fourier Transform Infra-Red (FTIR) to determine chemical bonds. From the whole black powder sample, XRD analysis showed the phases of Dilantanum Nickel Tetraoxide (La2NiO4), Nickel Oxide (NiO), Lanthanum Oxide (La2O3), and Lanthanum Oxide Ht x-form (La2O3 Ht (x-form)). In addition, it was seen from the visible compositions of the phases that the NiO phase looks more dominant and the variation of the synthesis temperature shows that the La2O3 phase was increasing. This was supported by the EDS analysis, which showed that the EDS spectrum contains elements La, Ni, and O where the element O indicates that oxidation occurs in the elements Ni and La. On the other hand, the SEM analysis results confirm that the black powder sample contains the elements La and Ni, based on the high and low electron images contained in the morphology of the black powder sample. In addition, it was also known that the particles in the black powder sample were micron size and had porous morphology. This occurs due to rapid thermal decomposition events and excessive gas development. In addition, FTIR analysis showed that the O-H bond had been reduced and there are still C-O and C-H bonds indicating the presence of organic elements possessed by glycine.

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Section: Fourier Transform Infrared (Ftir) Analysissupporting

confidence: 78%

Section: Fourier Transform Infrared (Ftir) Analysismentioning

confidence: 97%

A Physical Chemistry Study of Black Powder Materials by Solution Combustion Synthesis Method

et al. 2021

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“…It is important that additions can strongly affect a nonlinear properties of glycine crystals. It was determined that the addition of alkali metal nitrides, bromides, chlorides, or acetates to a solution can significantly change the second-harmonic generation (SHG) efficiency in γ-Gly [11,[23][24][25], reaching a maximum value for Cs chloride 5.06 times higher than that in a potassium dihydrogen phosphate (KDP) crystal [26].…”

Section: Introductionmentioning

confidence: 99%

Croconic Acid Doped Glycine Single Crystals: Growth, Crystal Structure, UV-Vis, FTIR, Raman and Photoluminescence Spectroscopy

et al. 2022

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Glycine (Gly) single crystals doped with croconic acid (CA) were grown by evaporation from aqueous solutions. Depending on the weight ratio of Gly and CA in solutions, the crystals take on a plate or pyramidal shape. Both powder and single crystal XRD analyses indicate that the crystal lattices of plates (α-Gly:CA) and pyramides (γ-Gly:CA) correspond to the lattices of pure α-Gly and γ-Gly polymorphs, respectively. Raman and FTIR spectra of Gly:CA crystals are very close to the spectra of undoped crystals, but include bands associated with CA impurity. Analysis of UV-Vis absorption spectra indicates that doping does not remarkably change bandgap value Eg~5.2 eV but results in appearance of strong absorption bands in the transparency region of pure glycine crystals, which result from local electronic transitions. Incorporation of CA molecules in Gly creates strong green photoluminescence in a wide spectral range 1.6–3.6 eV. Comparison of the optical spectra of Gly:CA and previously studied TGS:CA crystals indicates that in both cases, the modifications of the optical spectra induced by CA doping are practically identical and are related to the interaction between CA molecules located in the pores of the host Gly crystals and neighboring Gly molecules.

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“…Glycine and its methylated analogues form complexes with mineral acids exhibit astounding physical properties like ferro-elastic, ferroelectric or antiferroelectric behavior that is oen associated with transitions to commensurate or incommensurate phases. 16 It is ambivalent and can be inside or outside of the protein molecule. Glycine is used in stabilization applications, pharmaceutical applications and as a chemical intermediate.…”

Section: Introductionmentioning

confidence: 99%

Growth, crystal structure, Hirshfeld surface, dielectric and mechanical properties of a new organic single crystal: ‘Bis glycine’ squarate

et al. 2016

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Crystal growth, structural, optical, thermal and NLO studies of γ-glycine single crystals

Cited by 18 publications

References 21 publications

A Physical Chemistry Study of Black Powder Materials by Solution Combustion Synthesis Method

A Physical Chemistry Study of Black Powder Materials by Solution Combustion Synthesis Method

Croconic Acid Doped Glycine Single Crystals: Growth, Crystal Structure, UV-Vis, FTIR, Raman and Photoluminescence Spectroscopy

Growth, crystal structure, Hirshfeld surface, dielectric and mechanical properties of a new organic single crystal: ‘Bis glycine’ squarate

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