Crystal Growth, Spectral, Thermal and Optical Properties of Phthalic Anhydride (PA) Single Crystal

2012 ◽  
Vol 584 ◽  
pp. 136-140 ◽  
Author(s):  
S. Janarthanan ◽  
Y.C. Rajan ◽  
R. Sugaraj Samuel ◽  
S. Pandi
Keyword(s):  
Spectral Analysis ◽  
Single Crystal ◽  
Phthalic Anhydride ◽  
Second Harmonic ◽  
Organic Crystals ◽  
X Ray Diffraction ◽  
Fundamental Wavelength ◽  
Ft Ir ◽  
Raman Spectral ◽  
Raman Spectral Analysis

ABSTRACT Organic single crystal of Phthalic Anhydride (PA) was successfully grown by slow evaporation method. The structure of the grown crystal was confirmed by X-ray diffraction analysis. FT-IR, and FT-Raman spectral analysis of the crystalline samples reveal that the crystalline sample consists of all functional groups. The placement of protons was identified from H1-NMR spectral analysis. UV-Visible and photoluminescence spectral analyses were carried out for the grown crystals. The thermal behavior was studied with TGA-DTA analyses. The existence of second harmonic generation (SHG) signal was observed using Nd:YAG laser with a fundamental wavelength of 1064 nm. Keywords: Organic crystals, NLO crystals

scholarly journals Studies on the growth and characterization of L-cysteine hydrogen fluoride single crystal

2019 ◽  
Vol 37 (3) ◽  
pp. 304-309
Author(s):  
Azeezaa Varsha Mohammed ◽  
Suresh Sagadevan
Keyword(s):  
Single Crystal ◽  
Hydrogen Fluoride ◽  
Grown Crystal ◽  
Optical Band Gap ◽  
Second Harmonic ◽  
X Ray Diffraction ◽  
X Ray ◽  
Vis Spectroscopy ◽  
Ft Ir

AbstractL-cysteine hydrogen fluoride (LCHF) single crystals were grown from aqueous solution. Single crystal X-ray diffraction, FT-IR, UV-Vis-NIR, and TG-DTA were used to test the grown crystals. The specimen dielectric and mechanical behaviors were also studied. Powder X-ray diffraction of the grown crystal was recorded and indexed. The optical properties of the LCHF crystal were determined using UV-Vis spectroscopy. It was found that the optical band gap of LCHF was 4.8 eV. The crystal functional groups were identified using FT-IR. Second harmonic generation (SHG) efficiency of the LCHF was three times higher than that of KDP. The dielectric constant, dielectric loss and AC conductivity were measured at different frequencies and temperatures.

Single-Cell Raman Spectral Analysis of Oxygenated and Deoxygenated Thalassemia Erythrocytes

2009 ◽  
Vol 29 (10) ◽  
pp. 2854-2859 ◽  
Author(s):  
陈秀丽 Chen Xiuli ◽  
王桂文 Wang Guiwen ◽  
尹晓林 Yin Xiaolin ◽  
刘军贤 Liu Junxian ◽  
姚辉璐 Yao Huilu ◽  
...  
Keyword(s):  
Spectral Analysis ◽  
Single Cell ◽  
Raman Spectral ◽  
Raman Spectral Analysis

Synthesis, growth, structure and characterization of molybdenum zinc thiourea complex crystals

2015 ◽  
Vol 71 (3) ◽  
pp. 285-292 ◽  
Author(s):  
M. Rajasekar ◽  
K. Muthu ◽  
A. Aditya Prasad ◽  
R. Agilandeshwari ◽  
SP Meenakshisundaram
Keyword(s):  
Single Crystal ◽  
Diffraction Analysis ◽  
Intermolecular Interactions ◽  
Crystal Packing ◽  
Second Harmonic ◽  
Morphological Changes ◽  
Strong Interactions ◽  
X Ray Diffraction ◽  
X Ray ◽  
Cell Parameters

Single crystals of molybdenum-incorporated tris(thiourea)zinc(II) sulfate (MoZTS) are grown by the slow evaporation solution growth technique. Crystal composition as determined by single-crystal X-ray diffraction analysis reveals that it belongs to the orthorhombic system with space groupPca21and cell parametersa= 11.153 (2),b= 7.7691 (14),c= 15.408 (3) Å,V= 1335.14 (4) Å3andZ= 4. The surface morphological changes are studied by scanning electron microscopy. The vibrational patterns in FT–IR are used to identify the functional group and TGA/DTA (thermogravimetric analysis/differential thermal analysis) indicates the stability of the material. The structure and the crystallinity of the material were confirmed by powder X-ray diffraction analysis and the simulated X-ray diffraction (XRD) closely matches the experimental one with varied intensity patterns. The band gap energy is estimated using diffuse reflectance data by the application of the Kubelka–Munk algorithm. The relative second harmonic generation (SHG) efficiency measurements reveal that MoZTS has an efficiency comparable to that of tris(thiourea)zinc(II) sulfate (ZTS). Hirshfeld surfaces were derived using single-crystal X-ray diffraction data. Investigation of the intermolecular interactions and crystal packingviaHirshfeld surface analysis reveal that the close contacts are associated with strong interactions. Intermolecular interactions as revealed by the fingerprint plot and close packing could be the possible reasons for facile charge transfer leading to SHG activity.

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