Effect of ammonium acetate addition on crystal growth, spectral, thermal and optical properties of glycine single crystals

Selective crystallization of gamma glycine for NLO applications using magnesium sulfate (MgSO4) as an additive

“…From the thorough literature study of glycine polymorphs it was concluded that metastable αpolymorphic form of glycine produces spontaneously in pure aqueous solutions whereas the most thermodynamically stable form γ-glycine can be obtained in acidic or basic solution, low pH or high pH solutions or in the presence of inorganic salts or tailor made additives [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][19][20][21][22]. In recent times, γ-glycine single crystals have grown in the presence of potassium chloride [31], magnesium chloride [15], phosphoric acid [16], ammonium acetate [17], ammonium carbonate [18], zinc acetate [23], strontium chloride [29], cesium chloride [30] and ammonia solutions [24]. In the present research article, we report the growth and characterization of γ-glycine crystal grown from a mixture of water and magnesium sulfate solvent by slow solvent evaporation procedure.…”

Crystallization, habit modification and control of nucleation of glycine polymorphs from aqueous solutions doped with magnesium sulfate impurity

“…γ-glycine was reported to form in acidic or basic solutions * E-mail: anbuchudarazhagan@gmail.com or in solutions with addition of electrolytes or in the presence of tailor-made additives or other inorganic impurities/additives. γ-glycine was reported to become visible, when supersaturation generation is very slow, such as controlled evaporation of solvents [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29]34]. The investigation of polymorphism in pharmaceuticals has attracted an interest of scientific community because of its technological applications.…”

Studies on the Thermal, Mechanical, Dielectric and Photoconductivity Properties of Ammonium Hydrogen Oxalate Hemihydrate Single Crystal for NLO Applications

“…Organic NLO crystals show prominent properties due to their fast and nonlinear response and inherent synthetic flexibility and large optical damage threshold [8]. The organic nonlinear optical materials are having good NLO and electro-optical susceptibility in comparison with inorganic counterparts [9]. Organic compounds likeL-histidinium 2 nitrobenzoate [10], caffenium picrate [11], picolinium maleate [12], guanidiniumtrifluoroacetate [13], L-histidinium 2 nitrobenzoate etc have shown higher second harmonic generation efficiency than various inorganic crystals.…”