Syntheses, Crystal Structures, and NLO Properties of New Chiral Inorganic Chromophores for Second-Harmonic Generation

1998 ◽  
Vol 37 (9) ◽  
pp. 2158-2165 ◽  
Author(s):  
Géraldine Lenoble ◽  
Pascal G. Lacroix ◽  
Jean Claude Daran ◽  
Santo Di Bella ◽  
Keitaro Nakatani
Keyword(s):  
Second Harmonic Generation ◽  
Crystal Structures ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Nlo Properties

scholarly journals Two pairs of Zn(ii) coordination polymer enantiomers based on chiral aromatic polycarboxylate ligands: synthesis, crystal structures and properties

RSC Advances ◽  
2017 ◽  
Vol 7 (30) ◽  
pp. 18650-18657 ◽  
Author(s):  
Ji-Han Huang ◽  
Guang-Feng Hou ◽  
Dong-Sheng Ma ◽  
Ying-Hui Yu ◽  
Wen-Hong Jiang ◽  
...  
Keyword(s):  
Coordination Polymer ◽  
Second Harmonic Generation ◽  
Crystal Structures ◽  
Harmonic Generation ◽  
Coordination Polymers ◽  
Second Harmonic ◽  
Hydrothermal Conditions ◽  
Structures And Properties ◽  
Luminescent Behavior

Two pairs of Zn-based chiral coordination polymers were synthesized under hydrothermal conditions, exhibiting medium second-harmonic generation (SHG) activities and luminescent behavior.

scholarly journals Significant second-harmonic generation and bulk photovoltaic effect in trigonal selenium and tellurium chains

2021 ◽  
Author(s):  
Mei-Juan Cheng ◽  
Xiao-Hong Shi ◽  
Shunqing Wu ◽  
Zizhong Zhu
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
First Principles ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Photovoltaic Effect ◽  
First Principles Calculations ◽  
Nlo Properties ◽  
One Dimensional ◽  
Linear And Nonlinear

One-dimensional (1D) selenium and tellurium crystalize in helical chainlike structures and thus exhibit fascinating properties. By performing first-principles calculations, we have researched the linear and nonlinear optical (NLO) properties of...

Synthesis, Crystal Structures, and Nonlinear Optic and Thermal Properties of Two Diiodocarbazole Derivatives

2017 ◽  
Vol 41 (2) ◽  
pp. 79-81 ◽  
Author(s):  
Gui-Mei Tang ◽  
Rui-Hai Chi ◽  
Wen-Zhu Wan ◽  
Yong-Tao Wang ◽  
Yue-Zhi Cui ◽  
...  
Keyword(s):  
Thermal Properties ◽  
Thermogravimetric Analysis ◽  
Second Harmonic Generation ◽  
Crystal Structures ◽  
Nonlinear Optic ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Decomposition Temperature ◽  
Thermal Stabilities ◽  
Space Group

Two 3,6-diiodocarbazole derivatives were prepared from the iodination of the corresponding phenylcarbazole. 3,6-Diiodo-9-phenylcarbazole crystallises in the chiral space group P21 and shows good second-harmonic generation effects. Thermogravimetric analysis of the two compounds shows high thermal stabilities, in which the decomposition temperature for 1 and 2 are 273 and 308 °C, respectively.

THE INVESTIGATION OF SECOND-ORDER NONLINEAR OPTICAL PROPERTIES OF P-NITROPHENYLAZOANILINE: SECOND HARMONIC GENERATION AND AB INITIO COMPUTATIONS

2012 ◽  
Vol 11 (01) ◽  
pp. 209-221 ◽  
Author(s):  
ASLI KARAKAŞ ◽  
ZİYA ERDEM KOÇ ◽  
MICHAELA FRIDRICHOVÁ ◽  
PETR NĚMEC ◽  
JAN KROUPA
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Density Functional ◽  
Nonlinear Optical ◽  
Second Harmonic ◽  
Second Order ◽  
Photon Absorption ◽  
Nlo Properties ◽  
Hartree Fock ◽  
H Nmr

p-nitrophenylazoaniline (1) belongs to the family of compounds with conjugated bonds and delocalized π-electrons, structurally similar to the well known push-pull compound Disperse Red 1 (DR1).1 Due to the assembly of the molecule, nonlinear optical (NLO) properties are expectable and can be more or less accurately predicted. To estimate the potential for second-order NLO properties, the electric dipole moment (μ), dispersion-free dipole polarizabilities (α) and first hyperpolarizabilities (β) have been determined by density functional theory (DFT) quantum chemical calculations at B3LYP/ 6-311 + G(d, p) level. According to the computation results, the synthesized compound exhibits non-zero β values and it might have second-order NLO behavior. Title compound has been synthesized and characterized by FT-IR, 1H-NMR and UV-Vis spectroscopies. The maximum one-photon absorption (OPA) wavelengths were estimated to be shorter than 450 nm by quantum mechanical computations using the configuration interaction (CI) method. The same result was achieved by UV-Vis spectra measurements, whereas the compound exhibited good optical transparency to the visible light. Quantitative measurements of second harmonic generation (SHG) at 800 nm and 1064 nm have been performed. The relative efficiency comparable with that of KDP (kalium diphosphate) has been observed with the exciting wavelength of 1064 nm, while the other wavelength led to strong absorption of produced light by the sample. In the following more detailed study on frequency-dependent first hyperpolarizabilities using time-dependent Hartree–Fock (TDHF) method have been computed at the wavelengths used in SHG measurements.

NEW TRIMETHYLAMMONIUM DERIVATIVES TOWARD SECOND-ORDER NONLINEAR OPTICS

2005 ◽  
Vol 14 (03) ◽  
pp. 357-365 ◽  
Author(s):  
ZORNITZA GLAVCHEVA ◽  
HIROHITO UMEZAWA ◽  
SHUJI OKADA ◽  
HACHIRO NAKANISHI
Keyword(s):  
Nonlinear Optics ◽  
Second Harmonic Generation ◽  
Crystal Structures ◽  
Benzene Ring ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Second Order ◽  
Pm3 Method ◽  
Ionic Compounds ◽  
The Relationship

In order to find new ionic compounds with good characteristics for second harmonic generation (SHG), the relationship between first hyperpolarizabilities (β) and the position of the cationic center with respect to the benzene ring was investigated. The β values of a series of trimethylammonium cations: X–C 6 H 4–( CH 2)n N +( CH 3)3, where X = H , CH 3, OCH 3, NH 2, and N ( CH 3)2; n = 0–2, were calculated by using the MOPAC PM3 method. Relatively large calculated β values were obtained when X = N ( CH 3)2 and X = NH 2. Series of [4-(dimethylamino)phenyl]trimethylammonium ( X = N ( CH 3)2; n = 0) and [2-(4-aminophenyl)ethyl]trimethylammonium ( X = NH 2; n = 2) derivatives were synthesized. Among them, seven SHG-active complexes were found and four crystal structures were determined.

SHG in a centrosymmetric crystal – can it be possible?

2021 ◽  
Vol 77 (10) ◽  
pp. 586-590
Author(s):  
Teck Yong Tou ◽  
Seik Weng Ng
Keyword(s):  
Second Harmonic Generation ◽  
Crystal Structures ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Present Report ◽  
Nonlinear Susceptibility ◽  
Inversion Symmetry ◽  
Apparent Contradiction ◽  
Space Groups ◽  
And Inversion

The present report lists selected publications on centrosymmetric compounds that manifest second harmonic generation responses in a laser, along with a few publications that dispute the laser outcomes. Two studies provide a plausible explanation for this apparent contradiction between second-order nonlinear susceptibility and inversion symmetry: the crystals are noncentrosymmetric and are twinned by inversion. If crystal structures of SHG-active compounds are presented in centrosymmetric settings, the authors of the publications may consider stipulating that the true space group is likely to be one of the noncentrosymmetric sub-space groups.

New hydrophobicL-amino acid salts: maleates ofL-leucine,L-isoleucine andL-norvaline

2015 ◽  
Vol 71 (7) ◽  
pp. 584-592 ◽  
Author(s):  
Sergey G. Arkhipov ◽  
Denis A. Rychkov ◽  
Alexey M. Pugachev ◽  
Elena V. Boldyreva
Keyword(s):  
Amino Acids ◽  
Amino Acid ◽  
Second Harmonic Generation ◽  
Crystal Structures ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Side Chains ◽  
Hydrophobic Amino Acid ◽  
Amino Acid Salts ◽  
Acid Salts

Crystals of maleates of three amino acids with hydrophobic side chains [L-leucenium hydrogen maleate, C6H14NO2+·C4H3O4−, (I), L-isoleucenium hydrogen maleate hemihydrate, C6H14NO2+·C4H3O4−·0.5H2O, (II), and L-norvalinium hydrogen maleate–L-norvaline (1/1), C5H11NO2+·C4H3O4−·C5H12NO2, (III)], were obtained. The new structures containC22(12) chains, or variants thereof, that are a common feature in the crystal structures of amino acid maleates. The L-leucenium salt is remarkable due to a large number of symmetrically non-equivalent units (Z′ = 3). The L-isoleucenium salt is a hydrate despite the fact that L-isoleucine is a nonpolar hydrophobic amino acid (previously known amino acid maleates formed hydrates only with lysine and histidine, which are polar and hydrophilic). The L-norvalinium salt provides the first example where the dimeric cation L-Nva...L-NvaH+was observed. All three compounds have layered noncentrosymmetric structures. Preliminary tests have shown the presence of the second harmonic generation (SGH) effect for all three compounds.

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