Effect of Medium Acidity and Photostability of 3‐(4‐Dimethylamino‐phenyl)‐1‐(2,5‐dimethyl‐thiophen‐3‐yl)‐propenone (DDTP): A New Green Emitting Laser Dye

El‐Daly, Samy A.; Asiri, Abdullah M.; Khan, Salman A.; Alamry, Khalid A.; Hussein, Mahmoud A.

doi:10.1002/cjoc.201100028

Cited by 12 publications

(3 citation statements)

References 31 publications

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“…The effective number of electrons transition from the ground to excited state is usually described by the oscillator strength, which provides the absorption area in the electronic spectrum. The oscillator strength, f, can be calculated using the following equation [33]:…”

Section: Determination Of Oscillator Strength and Transition Dipole Mmentioning

confidence: 99%

One Pot Synthesis, Photophysical and X-ray Studies of Novel Highly Fluorescent Isoquinoline Derivatives with Higher Antibacterial Efficacy Based on the In-vitro and Density Functional Theory

et al. 2015

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Series of cyano substituted isoquinoline dyes were synthesized by one-pot multicomponent reactions (MCRs) of aldehydes, malononitrile, 6-methoxy-1,2,3,4-tetrahydro-naphthalin-1-one and ammonium acetate. Results obtained from spectroscopic (FT-IR, (1)H-NMR, (13)C-NMR, EI-MS) and elemental analysis of synthesized compounds was in agreement with their chemical structures. Structure of the compound was further conformed by X-ray crystallographic. UV-vis and fluorescence spectroscopy measurements provided that all compounds are good absorbent and fluorescent. Fluorescence polarity study demonstrated that these compounds were sensitive to the polarity of the microenvironment provided by different solvents. In addition, spectroscopic and physicochemical parameters, including electronic absorption, extenction coefficient, Stokes shift, oscillator strength transition dipole moment and fluorescence quantum yield were investigated in order to explore the analytical potential of synthesized compounds. The anti-bacterial activity of these compounds were first studied in vitro by the disk diffusion assay against two Gram-positive and two Gram-negative bacteria. The minimum inhibitory concentration was then determined with the reference of standard drug chloramphenicol. The results displayed that compound 3 was better inhibitors of both types of the bacteria (Gram-positive and Gram-negative) than chloramphenicol. Furthermore, quantum chemistry calculations using DFT/6-31-G* level of theory confirm the results. Dipole moment and frontier molecular orbitals were also investigated.

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Section: Determination Of Oscillator Strength and Transition Dipole Mmentioning

confidence: 99%

One Pot Synthesis, Photophysical and X-ray Studies of Novel Highly Fluorescent Isoquinoline Derivatives with Higher Antibacterial Efficacy Based on the In-vitro and Density Functional Theory

et al. 2015

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“…To avoid these drawbacks, researchers have been making a large number of laser dyes. These synthetic substances are distinguished by their simplicity of production and distinctive properties [10][11][12][13][14]. Nevertheless, these dyes have low lasing e ciency and rapid photodegradation Recently, we have shown that the addition of an N, N-dimethylamino group to the para-position in ring B signi cantly enhanced its photophysical properties through intramolecular charge transfer [15].…”

Section: Introductionmentioning

confidence: 99%

Spectral, Amplified Spontaneous Emission, and Density Functional Theory Calculations of a New Chalcone (MSPPP)

Attia

2024

Preprint

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The paper reveals the spectrum and amplified spontaneous emission (ASE) features of a new Chalcone laser dye material of 1-(4-methylsulfonyl phenyl)-3-(4-N, N dimethyl amino phenyl)-2-propen-1-one (MSPPP) with the molecular formula C18H19NO3S. The absorption, fluorescence, Stokes’ shift, and quantum yield were obtained using different organic solvents. The energy band gap was calculated and compared with that of 3-[4-(dimethylamino) phenyl]-1-phenyl-(2E)-propen- 1-one (DAPPP). Under suitable concentrations and pump power excitation (Nd: YAG laser 355 nm), MSPPP produced an intense ASE at 522.5 nm. Previously, we had reported that DAPPP showed optical activities that were significantly better than that of coumarin 503. The absorption spectra of MSPPP showed a wavelength band in the range 403–427 nm, whereas the fluorescence spectra exhibited a band at 472–533 nm. ASE was observed under pump pulse laser excitation, and the wavelengths were attuned from 511 to 548 nm. The molecular geometry was optimized, and their HOMO-LUMO energy values were determined by SCM Software for Chemistry & Materials using the DFTB (GGA BLYP) [Density-Functional-Based Tight-Binding] method.

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“…Researchers have been driven to manufacture many laser dyes to avoid these drawbacks. These synthesized materials are distinguished by their ease of synthesis, as well as their distinctive properties [ 8 , 9 , 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Spectral Characteristics and Molecular Structure of (E)-1-(4-Chlorophenyl)-3-(4-(Dimethylamino)Phenyl)Prop-2-en-1-One (DAP)

Aldaghri

2021

Materials

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In this work, a laser dye of (E)-1-(4-chlorophenyl)-3-(4-(dimethylamino)phenyl)prop-2-en-1-one (DAP) was synthesized and examined as a new laser medium. The compound DAP’s photophysical properties were investigated under the influence of solvents, concentrations, and pump power excitations. The absorption spectra showed a single band, and the shape of the spectra remained the same, regardless of the optical density. The fluorescence spectra showed a band around 538 nm; its intensity was inversely proportional to the concentration. DAP exhibits dual amplified spontaneous emission (ASE) bands at 545 and 565 nm under suitable pump power laser excitation and concentration. The results revealed that the ASE band at 565 nm is affected by solvents polarity, concentrations and pump power energies. This band could be attributed to the combination of two excited molecules and the solvent between them (superexciplex). Moreover, the molecular structure, the energy bandgap, and the total energy of DAP was calculated using density functional theory.

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Effect of Medium Acidity and Photostability of 3‐(4‐Dimethylamino‐phenyl)‐1‐(2,5‐dimethyl‐thiophen‐3‐yl)‐propenone (DDTP): A New Green Emitting Laser Dye

Cited by 12 publications

References 31 publications

One Pot Synthesis, Photophysical and X-ray Studies of Novel Highly Fluorescent Isoquinoline Derivatives with Higher Antibacterial Efficacy Based on the In-vitro and Density Functional Theory

One Pot Synthesis, Photophysical and X-ray Studies of Novel Highly Fluorescent Isoquinoline Derivatives with Higher Antibacterial Efficacy Based on the In-vitro and Density Functional Theory

Spectral, Amplified Spontaneous Emission, and Density Functional Theory Calculations of a New Chalcone (MSPPP)

Spectral Characteristics and Molecular Structure of (E)-1-(4-Chlorophenyl)-3-(4-(Dimethylamino)Phenyl)Prop-2-en-1-One (DAP)

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