Synthesis, structural, spectral and optical analysis of a novel semi-organic nonlinear optical crystal: Bis (4-methylbenzylammonium) hydrogen phosphate monohydrate

Deepa P.; Aarthi R.; Kalainathan S.Ramachandra Raja C.

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Synthesis, structural, spectral and optical analysis of a novel semi-organic nonlinear optical crystal: Bis (4-methylbenzylammonium) hydrogen phosphate monohydrate

机译：Synthesis, structural, spectral and optical analysis of a novel semi-organic nonlinear optical crystal: Bis (4-methylbenzylammonium) hydrogen phosphate monohydrate

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Abstract Bis (4-methylbenzylammonium) hydrogen phosphate monohydrate (4MLBAHP) single crystals were grown by reacting 4-methylbenzylamine (4MLBA) and orthophosphoric acid in 2:1 stoichiometric ratio using slow evaporation solution growth method. The structure of the grown crystal is solved and its space group is found to be P1¯documentclass12pt{minimal} usepackage{amsmath} usepackage{wasysym} usepackage{amsfonts} usepackage{amssymb} usepackage{amsbsy} usepackage{mathrsfs} usepackage{upgreek} setlength{oddsidemargin}{-69pt} begin{document}$$Poverline{1 }$$end{document}. The (C8H12N+)2 cation, (HPO42−) anion and water molecules present in 4MLBAHP are joined through N–H…O and O–H…O bonds. The vibrations of 4MLBAHP functional groups were identified through FTIR and FT-Raman spectral techniques. The observed P-O, HPO42− vibrations endorses the coordination of HPO42− cation in the crystal structure. The lower cut off wavelength of 4MLBAHP was identified at 245 nm and the optical transmission bandwidth is from 245 to 1100 nm. The molecular structure is also established through NMR spectroscopy. In 1H NMR, the protonation of NH2 to NH3+ causes the deshielding of NH3+ protons and the corresponding signal is observed at 7.839 ppm.The third order nonlinear optical (NLO) susceptibility (χ3) is found to be 1.6949 × 10–6 esu and this large value is attributed to the presence of hydrogen bonds in the molecular structure.

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《Optical and Quantum Electronics》 |2023年第9期|共5页
作者
Deepa P.; Aarthi R.; Kalainathan S.Ramachandra Raja C.;
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作者单位

Bharathidasan University;

Siddartha Educational Academy Group of Institutions;

Vellore Institute of Technology;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种英语
中图分类光学;
关键词
Crystal growth; FTIR spectroscopy; FT-Raman spectroscopy; NMR spectroscopy; Z-scan analysis;

Synthesis, structural, spectral and optical analysis of a novel semi-organic nonlinear optical crystal: Bis (4-methylbenzylammonium) hydrogen phosphate monohydrate

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