Theoretical Investigation of the Second and Third Order Nonlinear Optical Properties of Some Fused Heterocyclic Aromatic Compounds

1999 ◽  
Vol 579 ◽  
Author(s):  
Mamoun M. Bader
Keyword(s):  
Optical Properties ◽  
Aromatic Compounds ◽  
Nonlinear Optical ◽  
Dipole Moments ◽  
Ring System ◽  
Basis Set ◽  
Third Order ◽  
First Order ◽  
Hartree Fock ◽  
Extended Basis

ABSTRACTWe report herein the results of coupled perturbed Hartree-Fock (CPHF) ab initio extended basis set calculations on the geometric structures, dipole moments, static first-order (α), second-order (β), and third-order polarizabilities (λ) of a series of fused heterocyclic aromatic compounds based on quinoline. The effects of the presence/absence of the heteroatom as well as the introduction of other substituents at various positions in the ring system on these molecular properties are described. The effect of the presence of N-oxide is also examined. Suggestions for the design of heterocyclic systems with enhanced polarizabilities are made.

Intermolecular Effects on Third Order Nonlinear Optical Properties

1992 ◽  
Vol 247 ◽  
Author(s):  
D. S. Dudis ◽  
A. T. Yeates ◽  
H. A. Kurtz
Keyword(s):  
Optical Properties ◽  
Intermolecular Interactions ◽  
Nonlinear Optical ◽  
Basis Set ◽  
Basis Sets ◽  
Intermolecular Potential ◽  
Correlation Effects ◽  
Third Order ◽  
Hartree Fock ◽  
Intermolecular Contacts

ABSTRACTHartree-Fock ab initio calculations have been used to examine the magnitude of non-polar intermolecular interactions on polarizabilities and second hyperpolarizabilities. In the present case two ethylene molecules were examined in a cofacial interaction. Basis set requirements and correlation effects were considered in deriving the intermolecular potential. Two basis sets were considered for the intermolecular interactions at the Hartree-Fock level, while one set of calculations was performed with corrections for correlation. It is found that intermolecular contacts at the van der Waals distance has little effect on the molecular second hyperpolarizability, but it is not clear what the effect would be for longer oligomers.

scholarly journals 4-(4,5-Diphenyl-1H-imidazole-2-yl)phenol: Synthesis and Estimation of Nonlinear Optical Properties using Z-Scan Technique and Quantum Mechanical Calculations

2021 ◽  
Vol 68 (1) ◽  
pp. 170-177
Author(s):  
Fatemeh Mostaghni
Keyword(s):  
Optical Properties ◽  
Dipole Moment ◽  
Title Compound ◽  
Nonlinear Optical ◽  
Energy Gap ◽  
Nbo Analysis ◽  
Nonlinear Optical Properties ◽  
Basis Set ◽  
Third Order ◽  
Theoretical Investigations

In this study, 4-(4,5-Diphenyl-1H-imidazole-2-yl) phenol is successfully synthesized, and its nonlinear optical properties (NLO) are investigated both experimentally and theoretically. Theoretical investigations have been done by using TDDFT and B3LYP functional with usual 6-31+G(d,p) basis set. The results of HOMO-LUMO and NBO analysis show the low energy gap, high total dipole moment, and hyperpolarizabilities (β, γ) as well as the presence of dipolar excited states with relatively significant dipole-moment changes which are linked to the nonlinearity. The z-scan technique confirmed the NLO properties of title compound. The nonlinear absorption coefficient, refractive index, and third-order susceptibility were found to be 4.044 × 10−1 cmW−1, 2.89 × 10−6 cm2W−1 and 2.2627 × 10−6 esu, respectively. The negative sign of n2 indicated the occurrence of self-defocusing nonlinearity. The results show that the title compound can been used as potential NLO material.

Synthesis, characterization and third order nonlinear optical properties of trans-A2B-tpye cobalt corroles

2021 ◽  
Author(s):  
Guifen Lu ◽  
Peng Zhang ◽  
Yuanyuan Fang ◽  
Yongjie Gao ◽  
Qikang Hu
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Para Position ◽  
Third Order

A series of trans-A2B cobalt corroles, represented as [Cor(p-RPh)2(p-NO2Ph)]Co(PPh3) (1-5), where Cor is trianion of corrole, R is a CN, F, CH3, C(CH3)3 or PhCH2O on the para-position of the...

Physical origin of the third-order nonlinear optical properties of polyenes

2005 ◽  
Vol 52 (14) ◽  
pp. 1933-1945 ◽  
Author(s):  
I. Fuks-Janczarek ◽  
I. V. Kityk * ◽  
J. Berdowski ◽  
B. Sahraoui ◽  
C. Andraud
Keyword(s):  
Optical Properties ◽  
Nonlinear Optical ◽  
Nonlinear Optical Properties ◽  
Physical Origin ◽  
Third Order ◽  
The Third
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