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.

Bis-(1-(2-aminoethyl)piperidino), (2-(2-aminoethyl)pyridino) and (1-(2-aminoethyl)pyrrolidino)-substituted dicyanoquinodimethanes: consequences of flexible ethylene spacers with heterocyclic moieties and amine functionalities

2016 ◽  
Vol 72 (5) ◽  
pp. 709-715 ◽  
Author(s):  
P. Raghavaiah ◽  
R. Kuladeep ◽  
D. Narayana Rao ◽  
A. Jyothi Lakshmi ◽  
P. Srujana ◽  
...  
Keyword(s):  
Hydrogen Bond ◽  
Second Harmonic Generation ◽  
Crystal Structures ◽  
Intramolecular Hydrogen Bond ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Building Blocks ◽  
Strong Fluorescence ◽  
Thermal Stabilities ◽  
Intramolecular Hydrogen

Heterocyclic building blocks possessing ethylene spacer and amine functionality such as 1-(2-aminoethyl)piperidine (1,2-AEPi), 2-(2-aminoethyl)pyridine (2,2-AEPy) and 1-(2-aminoethyl)pyrrolidine (1,2-AEPr) were reacted with tetracyanoquinodimethane (TCNQ) to give disubstituted compounds namely bis-(1-(2-aminoethyl)piperidino)dicyanoquinodimethane (1), bis-(2-(2-aminoethyl)pyridino)dicyanoquinodimethane (2) and bis-(1-(2-aminoethyl)pyrrolidino)dicyanoquinodimethane (3). Utilization of 1,2-AEPi, 2,2-AEPy and 1,2-AEPr as disubstituents on TCNQ has resulted in interesting crystal structures. Inter- and intramolecular hydrogen-bond mediated and expanded supramolecular structures were observed in the lattices of the crystals. Strong fluorescence was observed in solids and solutions. (2) showed a strong second harmonic generation (SHG) whereas (1) and (3) were found to be SHG inactive. All compounds possess good thermal stabilities.

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

Crystal structure studies of Group V chalcogenide compounds. I. The structure of tricyclohexylphosphine sulphide

1977 ◽  
Vol 55 (17) ◽  
pp. 3081-3085 ◽  
Author(s):  
K. Ann Kerr ◽  
P. M. Boorman ◽  
B. S. Misener ◽  
J. G. H. van Roode
Keyword(s):  
Crystal Structure ◽  
Second Harmonic Generation ◽  
Rigid Body ◽  
Bond Length ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Direct Methods ◽  
Group V ◽  
Full Matrix ◽  
Space Group

Crystals of tricyclohexylphosphine sulphide, C18H33PS, are orthorhombic, a = 10.906(2), b = 15.836(2), c = 10.362(2) Å, Z = 4, space group Pn21a. The structure was solved by direct methods and refined by full-matrix least-squares procedures to a final Rω of 0.058 for all 1209 reflexions with sin θ/λ ≤ 0.5377.Although second harmonic generation unambiguously established the correct space group as Pn21a, parameters reported here refer to the centrosymmetric space group Pnma. The geometry at phosphorus is approximately tetrahedral with an average P—C distance of 1.838(2) Å. Angles at phosphorus range from 105.4° to 113.2°. The P=S bond length of 1.966(2) Å is one of the longest bonds of this type so far reported. Rigid body analysis of thermal parameters suggests that the 'true' bond lengths are even longer.

Two alkali calcium borates exhibiting second harmonic generation and deep-UV cutoff edges

2019 ◽  
Vol 43 (24) ◽  
pp. 9354-9363
Author(s):  
Peng Ren ◽  
Yun Yang ◽  
Hao Li ◽  
Zhihua Yang ◽  
Shilie Pan
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Polar Space ◽  
Structure Property ◽  
Space Group ◽  
Structure Property Relationships ◽  
Deep Uv

KCa4B3O9 and K0.59Rb0.41Ca4B3O9 crystallize in the polar space group with moderate SHG responses. Calculations were performed to elucidate the structure–property relationships.

scholarly journals 1-(4-Chlorophenyl)-3-(4-methoxyphenyl)prop-2-en-1-one

2006 ◽  
Vol 62 (4) ◽  
pp. o1647-o1649 ◽  
Author(s):  
William T. A. Harrison ◽  
H. S. Yathirajan ◽  
B. K. Sarojini ◽  
B. Narayana ◽  
J. Indira
Keyword(s):  
Second Harmonic Generation ◽  
Harmonic Generation ◽  
Title Compound ◽  
Second Harmonic ◽  
Geometrical Parameters ◽  
Space Group ◽  
Compound C ◽  
Centrosymmetric Space Group

The geometrical parameters for the title compound, C16H13ClO2, are normal. Packing in a non-centrosymmetric space group, which is consistent with the non-zero second harmonic generation response, may be influenced by a C—H...O interaction.

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 Investigation of Mid-Infrared Broadband Second-Harmonic Generation in Non-Oxide Nonlinear Optic Crystals

Crystals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 921
Author(s):  
Ilhwan Kim ◽  
Donghwa Lee ◽  
Kwang Jo Lee
Keyword(s):  
Second Harmonic Generation ◽  
Nonlinear Optic ◽  
Harmonic Generation ◽  
Second Harmonic ◽  
Short Pulse ◽  
Optical Signal ◽  
Fundamental Wave ◽  
Molecular Fingerprint ◽  
Mid Infrared ◽  
Wide Range

The mid-infrared (mid-IR) continuum generation based on broadband second harmonic generation (SHG) (or difference frequency generation) is of great interest in a wide range of applications such as free space communications, environmental monitoring, thermal imaging, high-sensitivity metrology, gas sensing, and molecular fingerprint spectroscopy. The second-order nonlinear optic (NLO) crystals have been spotlighted as a material platform for converting the wavelengths of existing lasers into the mid-IR spectral region or for realizing tunable lasers. In particular, the spectral coverage could be extended to ~19 µm with non-oxide NLO crystals. In this paper, we theoretically and numerically investigated the broadband SHG properties of non-oxide mid-IR crystals in three categories: chalcopyrite semiconductors, defect chalcopyrite, and orthorhombic ternary chalcogenides. The technique is based on group velocity matching between interacting waves in addition to birefringent phase matching. We will describe broadband SHG characteristics in terms of beam propagation directions, spectral positions of resonance, effective nonlinearities, spatial walk-offs between interacting beams, and spectral bandwidths. The results will show that the spectral bandwidths of the fundamental wave allowed for broadband SHG to reach several hundreds of nm. The corresponding SH spectral range spans from 1758.58 to 4737.18 nm in the non-oxide crystals considered in this study. Such broadband SHG using short pulse trains can potentially be applied to frequency up-conversion imaging in the mid-IR region, in information transmission, and in nonlinear optical signal processing.

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