Novel N-substituted-5-phenyl-1H-pyrazole-4-ethyl carboxylates as potential NLO materials

Chandrakantha, B.; Isloor, Arun M.; Sridharan, Kishore; Philip, Reji; Shetty, Prakash; Padaki, Mahesh

doi:10.1016/j.arabjc.2010.09.024

Cited by 16 publications

(5 citation statements)

References 16 publications

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“…The NLO response of several other heterocyclic compounds has been also measured. For instance, N -substituted-5-phenyl-1 H -pyrazole-4-ethyl carboxylates 153a – f (Chart ) were studied using open-aperture Z -scan technique at 532 nm with 5 ns laser pulses. Within the series of carboxylates 153a – f , compound 153c presented the stronger effect of nonlinear absorption.…”

Section: Organic Materialsmentioning

confidence: 99%

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

2016

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The control of luminous radiation has extremely important implications for modern and future technologies as well as in medicine. In this Review, we detail chemical structures and their relevant photophysical features for various groups of materials, including organic dyes such as metalloporphyrins and metallophthalocyanines (and derivatives), other common organic materials, mixed metal complexes and clusters, fullerenes, dendrimeric nanocomposites, polymeric materials (organic and/or inorganic), inorganic semiconductors, and other nanoscopic materials, utilized or potentially useful for the realization of devices able to filter in a smart way an external radiation. The concept of smart is referred to the characteristic of those materials that are capable to filter the radiation in a dynamic way without the need of an ancillary system for the activation of the required transmission change. In particular, this Review gives emphasis to the nonlinear optical properties of photoactive materials for the function of optical power limiting. All known mechanisms of optical limiting have been analyzed and discussed for the different types of materials.

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Section: Organic Materialsmentioning

confidence: 99%

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

2016

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“…Yield: 1.32 g (90%) of brownish crystals. Physical and spectral data of pyrazole 23a were in agreement with the literature data …”

Section: Methodsmentioning

confidence: 95%

Synthesis and Rotational Isomerism of 1-Substituted Methyl (S)-[5-(2-Nitrophenyl)-1H-pyrazole-4-carbonyl]alaninates

et al. 2015

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Seven title compounds 12a-g and the (S)-prolinate analogue 13 were prepared in five steps from 2-nitrobenzoic acid (7). Reduction of the nitro group followed by derivatization of the so formed anilines 14 gave the N-alkyl-(15a-c), N-acyl-(16a,b and 19), and N-vinyl derivative 20. NMR spectra of (S)-alanine and (S)-proline derived compounds 12, 13, 14-16, 19, and 20 exhibited two sets of signals corresponding to pairs of conformational diastereomers. The free energy barriers of rotation, ΔG(‡)298 = 82-86 kJ mol(-1), were determined by (1)H NMR for 12a, 12d, 12f, and 12g and evaluated by DFT calculations.

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“… 21 The optical nonlinearity of a series of N -substituted-5-phenyl-1 H -pyrazole-4-ethyl carboxylates of compounds in chloroform solution has been assessed, and these compounds have been found to be good candidates for NLO applications. 22 In addition, a series of ( Z )-2-(4-nitrophenyl)-3-(1-phenyl-4,5-dihydro-1 H -pyrazol-3-yl)acrylonitrile and ( E )-3-(4-nitrostyryl)-1-phenyl-4,5-dihydro-1 H -pyrazole compounds have been found to have several electron accepting groups attached and to show high NLO responses dependent on functionalization of the pyrazoline derivatives. 23 The compounds 1- N -phenyl-3(3,4-dichlorophenyl)-5-phenyl-2-pyrazoline, 24 diethyl-1 H -pyrazole-3,5-dicarboxylate and 4-(4-bromophenyl)-1-tert-butyl-3-methyl-1 H -pyrazol-5-amine 25 have been studied with experimental and density functional theory (DFT) methods and found to have promising NLO properties.…”

Section: Introductionmentioning

confidence: 99%

Molecular properties and In silico bioactivity evaluation of (4-fluorophenyl)[5)-3-phen-(4-nitrophenyl yl-4,5-dihydro-1H-pyrazol-1-yl]methanone derivatives: DFT and molecular docking approaches

Omotayo,

Banjo,

Emmanuel

et al. 2023

Journal of Taibah University Medical Sciences

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Novel N-substituted-5-phenyl-1H-pyrazole-4-ethyl carboxylates as potential NLO materials

Cited by 16 publications

References 16 publications

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

Nonlinear Optical Materials for the Smart Filtering of Optical Radiation

Synthesis and Rotational Isomerism of 1-Substituted Methyl (S)-[5-(2-Nitrophenyl)-1H-pyrazole-4-carbonyl]alaninates

Molecular properties and In silico bioactivity evaluation of (4-fluorophenyl)[5)-3-phen-(4-nitrophenyl yl-4,5-dihydro-1H-pyrazol-1-yl]methanone derivatives: DFT and molecular docking approaches

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