Studies on structural, optical, thermal and photoconductivity of a new organic nonlinear optical crystal: 4-methylpyridinium 4-nitrobenzoate
TL;DR: Good quality new single crystals of 4-methylpyridinium 4-nitrobenzoate were grown by slow evaporation solution growth technique at room temperature using methanol as solvent.
Abstract: Good-quality new single crystals of 4-methylpyridinium 4-nitrobenzoate were grown by slow evaporation solution growth technique at room temperature using methanol as solvent. The structure of the c...
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TL;DR: In this article , a single crystal hexamethylenetetramine 4-nitrophenol monohydrate (HMTNP) was grown using solvent evaporation and the single crystal X-ray diffraction was used to confirm the crystal lattice parameters and space group.
2 citations
TL;DR: A dynamic third order nonlinear optical material (Propanone-2,4-dinitrophenyl hydrazone) for optoelectronic appliances was harmonized at room temperature and single crystals were fully-fledged by Low Temperature solution growth technique as mentioned in this paper .
1 citations
TL;DR: In this paper , an organic third-order nonlinear optical material of Butyl para-hydroxybenzoate (BHB) crystal is grown by solvent evaporative method.
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TL;DR: In this paper, Butyl para-hydroxybenzoate (BHB) crystal is grown by solvent evaporative method and the structure and unit cell parameters of BHB crystal are analyzed by the single-crystal XRD.
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TL;DR: In this paper , a new organic single crystal of 3-aminopyridine p-nitrobenzoate (3-APPNB) with a size of 8 × 4 × 2 mm3 was grown by slow evaporation solution growth technique at room temperature using methanol solvent.
Abstract: A new organic single crystal of 3-aminopyridine p-nitrobenzoate p-nitrobenzoic acid (3APPNB) with a size of 8 × 4 × 2 mm3 was grown by slow evaporation solution growth technique at room temperature using methanol solvent. The lattice parameter values were evaluated with the help of single crystal XRD and it confirms that the 3APPNB crystal belongs to triclinic crystal structure and the space group P-1. Crystal unit cell parameters are a = 9.3384(5) Å, b = 10.0403(5) Å, c = 11.094(6) Å, α = 109.4940(10)°, β = 93.964(2)°, γ = 99.890(2)° and V = 957.03 (9) (Å3) were determined. The 3APPNB crystal crystallizes in a centrosymmetric nature, triclinic system and space group P-1. SCXRD study shows that both the anion and the cation are interlinked to each other by two types of symmetrical intermolecular C–H…O and N–H···O hydrogen bonds. The crystalline nature and hkl phases have been determined using Powder XRD studies. The presence of different vibrational groups in the 3APPNB compound is examined by employing Fourier transform infrared (FT-IR) spectral analysis. UV–Vis-DRS spectral analysis signifies that the 3APPNB has a wide transmittance (98 %) and a cut-off wavelength of around 317 nm. The etch pit density (EDP) of 3APPNB crystal was examined by a chemical etching analysis. The thermal studies expose that 3APPNB is thermally stable up to 172 °C. The surface morphology of the 3APPNB is analyzed by SEM. The nonlinear properties like β, n2 and χ(3) were measured through the Z-scan analysis and the values were calculated to be 5.78 × 10−5 m/W, 8.05 × 10−12 m2/W) and χ(3) = 8.936 × 10−9. The third-order nonlinear optical (TONLO) χ(3) values are higher. The achieved TONLO χ(3) value when compared to other similar constituents is owing to the tarnish movement of π-electron configuration from the donor to an acceptor that makes the molecules highly polarized. The results reveal that the 3APPNB crystal finds applications in devices like optical switching and optical limiting. The quantum-chemical theoretical analyses are performed to measure the intrinsic properties of the 3APPNB molecules using DFT calculation. The band gap, orbital energy and second hyperpolarizability are also studied using changing the applied field. Furthermore, Quantum chemical calculations are used to obtain the MESP, HOMO-LUMO and first-order hyperpolarizability for the 3APPNB compound.
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01 Jan 1963
TL;DR: In this paper, a sequence of procedures for identifying an unknown organic liquid using mass, NMR, IR, and UV spectroscopy is presented, along with specific examples of unknowns and their spectra.
Abstract: Presents a sequence of procedures for identifying an unknown organic liquid using mass, NMR, IR, and UV spectroscopy, along with specific examples of unknowns and their spectra,
11,753 citations
TL;DR: In this paper, a single-beam technique for measuring both the nonlinear refractive index and nonlinear absorption coefficient for a wide variety of materials is reported, including a comprehensive theoretical analysis.
Abstract: A sensitive single-beam technique for measuring both the nonlinear refractive index and nonlinear absorption coefficient for a wide variety of materials is reported. The authors describe the experimental details and present a comprehensive theoretical analysis including cases where nonlinear refraction is accompanied by nonlinear absorption. In these experiments, the transmittance of a sample is measured through a finite aperture in the far field as the sample is moved along the propagation path (z) of a focused Gaussian beam. The sign and magnitude of the nonlinear refraction are easily deduced from such a transmittance curve (Z-scan). Employing this technique, a sensitivity of better than lambda /300 wavefront distortion is achieved in n/sub 2/ measurements of BaF/sub 2/ using picosecond frequency-doubled Nd:YAG laser pulses. >
7,717 citations
TL;DR: In this paper, a van der Pauw four-probe arrangement was used for measuring the electrical resistivity, which varies between 0.1 × 10 4 and 8.18× 10 4 Ωcm.
264 citations