Growth, mechanical, dielectric, thermal and optical studies of a nonlinear optical crystal: l-Histidinium dipicrate dihydrate

Helen, F.; Kanchana, G.

doi:10.1016/j.matchemphys.2014.11.064

Cited by 39 publications

(4 citation statements)

References 29 publications

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“…Previously, picrates of L-valine [11], L-asparagine [12] and L-arginine, [13] as well as picrates of L-proline [14][15][16][17][18], L-threonine [19,20], Lornithine [13,21] and L-histidine [22][23][24] were discovered. The authors of [10] obtained the previously known L-valinium picrate and a new crystal, L-isoleucinium picrate.…”

Section: Introductionmentioning

confidence: 99%

l-Methioninium picrate

Ghazaryan

Zakharov

Boldyreva

et al. 2015

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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Section: Introductionmentioning

confidence: 99%

l-Methioninium picrate

Ghazaryan

Zakharov

Boldyreva

et al. 2015

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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“…The HOMO LUMO values of ligand A (0.0829 a.u) and ligand B (0.0662 a.u) derived were used to compute the HOMO‐LUMO energy band gap. It was shown by other reported work [5f] that lower the energy difference (E gap ), greater will be charge transfer among the atoms and thus will have greater contribution to the nonlinear optical property. (HOMO LUMO values for Ligand A and B in Figure 4).…”

Section: Resultsmentioning

confidence: 97%

Computer‐Aided and Experimental Studies of Conjugation Effect in Azobenzene‐Based Compounds towards Nonlinear Optic Application

et al. 2023

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Diphosphine ligands containing {(−HC=N) imine group} demonstrating aliphatic and aromatic framework such as ethane and azobenzene exhibit different nonlinear optical (NLO) properties. In this study, two different ligands N,N′‐Bis‐(2‐diphenylphosphinobenzyaldehyde)‐ethane‐1,2‐diamine (A) and N,N′‐Bis‐(2‐diphenylphosphinobenzyaldehyde)‐4,4 azodianiline (B) have been synthesized with a percentage yield of 60–70 % and further characterized by spectroscopic analysis. Comparative study of computational analysis using Gaussian software with DFT method and hybrid functional B3LYP together with basis set 6‐31G++(d,p) has shown good agreement of less than 5 % deviation errors. From previous study, derivatives of these compounds have shown good NLO properties contributing by many factors such as conjugation, electron withdrawing groups (EWG), electron donating groups (EDG), metal mass, highest occupied molecular orbital‐lowest unoccupied orbital (HOMO‐LUMO) and band gap. The evaluation shows that both ligands have high NLO properties established on the value of βtot at 1064 nm wavelength. Studies indicate that ligand B showed highest NLO property with the βtot value of 11.1534×10−30 esu followed by ligand A 10.3786×10−30 esu due to increased conjugation in the system. This is supported by the high dipole moment 5.501404 μ (D) of ligand B. These ligands can be further modified by the addition of the metals to form complexes in order to improve NLO properties with the βtot value of complex A 24.0638×10−30 esu followed by complex B with the βtot value 526.9826×10−30 esu.

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“…At low temperatures . The low dielectric loss at high frequency is essential criteria for photonic and electro-optic devices and microelectronics industry [37][38].…”

Section: Dielectric Measurementsmentioning

confidence: 99%

“…It is concluded that bis (hydrogenmaleate)-Co(II) tetrahydrate shows positive photoconductivity. The positive photoconductivity exhibited by the sample may be due to generation of mobile charge carriers by the absorption of photons [38].…”

Section: Photoconductivity Studiesmentioning

confidence: 99%