Impact of substituents at the para position of C-Nitroso over N-Nitroso diphenylamine on static and frequency dependent nonlinear optical Properties: DFT and TD-DFT

被引:4
作者
Siddiqui, Zahir Ali [1 ,2 ]
More, Sandeep [1 ]
Sekar, Nagaiyan [2 ]
机构
[1] Inst Chem Technol, Dept Fibres & Text Proc Technol, Mumbai 400019, India
[2] Inst Chem Technol, Dept Specialty Chem Technol, Mumbai 400019, India
关键词
Nitroso diphenylamine; Hyperpolarizabilty; Electron donating group; DENSITY-FUNCTIONAL THEORY; CHARGE-TRANSFER; EXCITED-STATES; AB-INITIO; MOLECULAR-STRUCTURE; HYPERPOLARIZABILITY; THERMOCHEMISTRY; GENERATION; KDP;
D O I
10.1016/j.comptc.2024.114636
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The nonlinear optical property of N and C-nitroso diphenylamine is the focus of the current work but the D-pi-A skeleton-based para substituted nitroso benzene served as the starting point for this investigation. For p-methoxy nitroso benzene, a maximum beta(0) of 10.47 x 10(-30) esu was attained. Diphenylamine analogue was letter on chosen for further improvement. For these nitroso diphenylamines, substituent effects of electron donating groups (EDGs) at the para position have been studied for the nonlinear optical property (NLO). The NMe2 derivative of C-nitroso was found to have the highest value of hyperpolarizability (beta(0)) of 57.46 x 10(-30) esu, including 570 x 10(-30) Debye.esu as molecular hyperpolarizability (mu x beta(0)), out of these two nitroso forms with substituents Me, OMe, OEt, NH2, and NMe2 at para position. H < Me < OMe < OEt < NH2 < NMe2 is the ascending effect for the beta(0) in the N-nitroso whereas H < Me < OMe < NH2 < OEt < NMe2 in the C-nitroso. These beta(0) value shows 155.29, 73.69, 13.12 fold increment as compared to diphenylamine (DPA), urea and p-nitroaniline (PNA) respectively. Upon increasing the lambda(max), value of calculated beta(omega)(TD) also increases calculated in TD-DFT calculations (beta(1064)(TD) < beta(1340)(TD) < beta(1460)(TD) < beta(1907)(TD)). These values have shown a deviation range of 7-38 % in case of N-nitroso and 11-52 % in case of C-nitroso as compared to static values. Whereas beta(omega)(HRS) increases with increase in the optical frequency (beta(1064)(HRS) > beta(1340)(HRS) > beta(1460)(HRS) > beta(1907)(HRS)). These values have shown a deviation range of 4-91 % in case of N-nitroso and 1 to > 100 in case of C-nitroso as compared to static values.
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页数:11
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