Growth and evaluation of some urea derivative crystals

Ardoino, M.; Zeng, L.; Razzetti, C.; Zha, M.; Zanotti, L.; Curti, Mariano

doi:10.1016/s0254-0584(00)00306-0

Cited by 10 publications

(3 citation statements)

References 4 publications

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“…Even the crystallization is very complicated for Urea but fruitful outcome have been achieved by taming some efforts on solution and vapor growth. The physical and optical properties of Urea are very much comparable with KDP and ADP crystals which were proven earlier 9 . Derivatives of Urea are widely used in supramolecular chemistry and crystal engineering due to its versatility in synthesis and design of solid state structures and functional materials 10,11 .…”

Section: Introductionsupporting

confidence: 69%

Crystal Growth and Characterization of Urea Nitrate

Balamugundan,

Vijayaraj,

Ravindran

et al. 2024

Orient. J. Chem

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Single crystals of urea nitrate have been grown from aqueous solution by slow evaporation technique. Powder diffraction analysis confirmed that the grown crystals belong to orthorhombic system. The presence of functional groups was confirmed by using (FTIR) spectroscopy. Optical absorption studies show very low absorption in entire visible region and the UV cut-off is found to be around 300 nm. Thermal analysis studies were carried out using TG/DSC analysis and the grown crystal is stable up to 156.4◦C. SEM and EDAX analysis was observed and the elementary composition and morphological changes were studied.

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Section: Introductionsupporting

confidence: 69%

Crystal Growth and Characterization of Urea Nitrate

Balamugundan,

Vijayaraj,

Ravindran

et al. 2024

Orient. J. Chem

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“…Different derivatives of urea have been studied for NLO applications. So me of them found useful for NLO applications [6,[14][15][16][17][18]. The Urea and Urea derivates Thiourea, N'N dimethyl Urea have been tried as a dopent in KDP [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Study on Growth Habit, SHG and Thermal Properties of Urea Phosphate Doped KDP Crystals

Muley¹

2012

SCIT

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Pure and doped with Urea Phosphate single crystals of Potassium Dihydrogen Phosphate (KDP) were grown by the low temperature solution growth method, adopting the technique of slow evaporation of the solvent for nonlinear optical applications. The change in the growth habit of the doped KDP crystals has been reported. The study confirms the decrease in the growth rate along c-axis with increasing the dopant concentration. The doping of the Urea Phosphate in the grown crystal has been confirmed qualitatively by the FT-IR spectroscopy. Form the UV-Visible-NIR transmission study; it was observed that the transparency of the crystal increases with dopant concentration. Thermo Grav imetric Analysis shows that the thermal stability of the crystal decreases with dopant concentration. The crystal structure of doped crystal was determined fro m Powder X-Ray diffract ion studies. The improvement in Second Harmon ic Generation efficiency of doped crystal has also been reported.

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“…Urea derivatives are notable organic compounds and some of the urea derivatives are mono methyl urea, phenylurea, urea L-malic acid and urea L-tartaric acid have been investigated for NLO applications [9][10][11]. 1, 3-Dimethyl urea is also a urea derivative organic compound obtained from urea by replacing two hydrogen atoms of two NH2 groups by CH3 groups.…”

Section: Introductionmentioning

confidence: 99%

Spectroscopic, thermal, second order and third order NLO studies of N, N’ -dimethyl urea crystal

Kannan¹,

Narayanasamy²,

Subramanian³

et al. 2018

J App Adv Res

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Nonlinear optical (NLO) crystals are classified into organic, inorganic and semi organic crystals and these crystals are used in the fields of optical communication, optical computing, frequency doubling, optical data processing and opto electronics. In this work an organic NLO crystal namely DMU crystal was prepared. Slow evaporation technique was adopted to grow the single crystals of DMU after the growth period of 35 days. The harvested crystals have been subjected to various characterization techniques like XRD, FTIR, FT-Raman, TG/DTA, SHG, EDAX, impedance, optical and Z-scan studies. From the studies, is observed that DMU crystal has orthorhombic structure and it has the melting point at 105 o C and has the decomposition point at 275 o C. The relative SHG efficiency of DMU crystal was found to be more than one and third order NLO parameters were evaluated. The optical band gap of DMU crystal was found to be 5.008 eV.The results from various studies were analyzed.

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Growth and evaluation of some urea derivative crystals

Cited by 10 publications

References 4 publications

Crystal Growth and Characterization of Urea Nitrate

Crystal Growth and Characterization of Urea Nitrate

Study on Growth Habit, SHG and Thermal Properties of Urea Phosphate Doped KDP Crystals

Spectroscopic, thermal, second order and third order NLO studies of N, N’ -dimethyl urea crystal

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