Synthesis, Crystal Growth and Characterization of l-Proline Lithium Chloride Monohydrate: A New Semiorganic Nonlinear Optical Material

Abstract

A new semiorganic material, L-proline lithium chloride monohydrate (LPLCM), was synthesized for the first time. Its solubility and metastable zonewidth in double distilled water were estimated. Employing a temperature reduction method, a crystal of size 16 × 6 × 5 mm 3 was grown from aqueous solution. The cell dimensions obtained by single crystal X-ray diffraction studies reveal that the crystal belongs to the monoclinic system. Functional groups of the grown crystal were identified from FTIR spectral analysis. UV-vis-NIR studies show that the crystal is transparent in the wavelength range of 300-1100 nm. Second harmonic generation conversion efficiency found using the Kurtz and Perry method is about 0.2 times that of KDP. The thermal stability of the compound was determined by TG-DTA analyses of the specimen. The microhardness test was carried out, and the load dependent hardness was measured.

Synthesis, Crystal Growth, Structural, Optical, Thermal and Mechanical Properties of Semiorganic Nonlinear Optical Material: L-Cystine Dihydrochloride

“…A series of semi-organic compounds such as l-histidinium hydrogen malate 5 , L-arginine diphosphate 6 , L-Lysine monohydrochloride dihydrate 7 , L-histidine hydrochloride monohydrate 8 and L-glutamic acid hydrochloride 9 have been reported with moderately high mechanical and chemical stability. Our laboratory is engaged in finding new materials for NLO applications and some of these were reported recently [10][11][12][13] . L-cystine dihydrochloride (C 6 H 12 S 2 N 2 O 4 .2HCl) is yet another semiorganic nonlinear optical material.…”

Advances in Crystallography of Coordination Complexes on Main Group Metals with Amino Acid Ligands

“…Figure 5 (a) As-grown crystal of LPLCM by slow evaporation method, (b) as-grown crystal of LPLCM by slow cooling method [12] 图 6 LPLCM 的分子结构图 [12] Figure 6 The molecular structure and crystallographic numbering scheme of LPLCM (50% probability) [12] 近年来, 比较引人注目的工作由 Zaworotko 课题 组 [57] 报道出来, 他们从热水中得到了 8 种 2∶1 的氨基 酸两性离子和 Li ＋ 盐的晶体, 得到了基于四面体锂阳离 子的配位网络结构: 二维方形网状结构、类金刚石结构 和沸石 ABW 等三类结构. [57] Figure 7 Structural diversity in the networks formed by 2∶1 cocrystals of amino acids with lithium salts: (a) square grids, (b) diamondoid LiD-MOM nets, and (c) zeolitic ABW topology in the first LiZMOM.…”

“…鉴于氨基酸类配体的环境友好性质, 主族金 属氨基酸配合物在绿色功能材料方面已经崭露了头角, 尤其在非线性光学材料方面, 主族金属氨基酸配合物取 得了可喜的成绩. 甘氨酸硫酸锂(Glycine lithium sulfate, GLS) [11] 、L-脯氨酸氯化锂一水合物(L-proline lithium chloride monohydrate, LPLCM) [12] 、二氯•三(甘氨酸)合钙 (II) [tris(glycine) calcium(II) dichloride, TGCC] [13] 都具有 良好的倍频效应(second harmonic generation, SHG), 都 有可能发展成为良好的非线性光学材料(nonlinear optical, NLO). 另外, 元素周期表中的一些 p 区的主族金属 离子, 如铋、碲、铅、锡、锑等, 它们的 s 亚层和 p 亚 层的价电子处于电子层的最外层, 与配位场相互作用 强, 容易形成类似于过渡金属离子的宽带发光, 且其发 光波长延伸至近红外区, 因而, 具有良好的应用前景.…”

Synthesis, Crystal Structure and Vibrational Spectral Analysis of Guanidinium Hydrogen L-aspartate Single Crystal

“…3,4 In addition to the ease of growing by slow evaporation solution technique (SEST), the characteristics of amino acid crystals can be modified using molecular engineering and chemical synthesis. 5 Guanidines are the imido derivatives of urea, with one imine and two amine units. Guanidine derivatives are versatile intermediates used in the manufacture of plastics, resins, rubber chemicals, photo chemicals, fungicides and disinfectants in industries and many of their complexes are potential NLO materials.…”