Emission characteristics and photostability of 1,4-bis[β-(2-benzoxazolyl) vinyl]benzene (BBVB) laser dye

El‐Daly, Samy A.; Al-Hazmy, Sadeq M.; Ebeid, El-Zeiny M.; Vernigor, E. M.

doi:10.1016/1010-6030(95)04115-3

Cited by 23 publications

(4 citation statements)

References 16 publications

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“…Tis transition appears as a shoulder with butanol and DMSO solvents. Te small size and high polarity of acetonitrile lead to better solvation of excited BDBMA molecules with subsequent deactivation to a similar ground-state confguration [27]. Te high purity of DBDMA is indicated by the coincidence between the absorption and excitation spectra in DMSO solvents, as shown in Figure 4S.…”

Section: Resultsmentioning

confidence: 90%

A Study of the Electronic Absorption and Emission Spectra of DBDMA Dye: Solvent Effect, Energy Transfer, and Fluorescence Quenching

Al-Hazmy

Al-Harby

Hassan

et al. 2023

Journal of Spectroscopy

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This study is aimed to shed light on the electronic absorption and emission spectra of DBDMA (2-(1-(difluoroboraneyl)-1,2-dihydroquinolin-2-yl)-2-(1-methylquinoxalin-2-ylidene) acetonitrile) in different solvents. Both types of spectra were obtained theoretically and produced experimentally in different solvents. The photostability of dye was tested, and its energy transfer behavior in the presence of oxygen and hydrated copper sulfate quenchers was investigated. We also gave a qualitative estimation of the effect of acidic media on the absorption and emission spectra. There is good compatibility between the calculated and measured values of many photophysical parameters. DBDMA has a low chemical quantum yield in solvents of different polarities, and the fluorescence quantum yield is high enough, which confirms, together with the low values of the excited state lifetime, its efficiency as laser emitting dye in the range of wavelength emission maxima. The rigidity of the DBDMA molecule is the main reason for the photochemical stability and the absence of a considerable shift as a result of the change in the polarity of the solvents. Geometries of ground and excited states were optimized using the density functional theory (DFT) and the time-dependent density functional theory (TD-DFT), respectively. Upon using the TD-DFT method, the UV-Vis absorption and emission spectra of the DBDMA molecule in different solvents were illustrated. A slight change is observed in the position of the maximum emission and absorption wavelength with the change of the solvent due to the rigidity of the compound. There was no apparent effect of quenching by oxygen. Besides, no intersystem crossing (ISC) was observed for the excited state of the DBDMA as a result of aeration of a solution with O2 for 20 min, which was an explanation of the stability of peak emission intensity of dye after exposure to oxygen gas. The energy transfer rate constant has been calculated as well.

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Section: Resultsmentioning

confidence: 90%

A Study of the Electronic Absorption and Emission Spectra of DBDMA Dye: Solvent Effect, Energy Transfer, and Fluorescence Quenching

Al-Hazmy

Al-Harby

Hassan

et al. 2023

Journal of Spectroscopy

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“…8b, the actual maximum absorption wavelength in MeOH was 392 nm. The π-π* electronic transition was the cause of these electronic absorption spectra [2]. In this article, we define the most precise functional and basis set to use in computing computational absorption spectra and contrast them with actual ones.…”

Section: Td-dft Investigationsmentioning

confidence: 99%

“…High photo-stability hetero-atom-containing compounds with the general formula (Ar/-CH = CH-Ar--CH-Ar/) make effective laser dyes [1][2][3][4][5] and have potential uses in a variety of fields, including electroluminescent devices [6], optical imaging devices and electrochromic display [5] as well as electroluminescent devices [5]. One of the many benzothiazole derivatives, l, 4 bis [-(benzothiazolyl) vinyl] benzene (BVB), is a significant candidate in the domain of diolefinic compounds containing hetero-atoms.…”

Section: Introductionmentioning

confidence: 99%

Fluorescence quenching, DFT, NBO, and TD-DFT calculations on 1, 4-bis [2-benzothiazolyl vinyl] benzene (BVB) and meso-tetrakis (4-sulfonatophenyl) porphyrin (TPPS) in the presence of silver nanoparticles

et al. 2022

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Steady-state fluorescence measurements were used to examine the fluorescence quenching of 1, 4-bis [-(2-benzothiazolyl) vinyl benzene (BVB) by sodium salt of meso-tetrakis (4-sulfonatophenyl) porphyrin (TPPS) in the presence and absence of silver nanoparticles (Ag NPs). The energy transfer (ET) process’s emission intensities and Stern–Volmer constants (KSV) showed that Ag NP’s presence increased ET’s efficiency. The molecular structures of TPPS, TPPS, and BVB/TPPS were optimized using the DFT/B3LYP/6-311G (d) technique to elucidate the mechanism. The discovered optimized molecular structure proved that whereas TPPS and BVB/TPPS MSs are not planar because the porphyrin group in TPPS is rotated out by phenyl sodium sulphate, the BVB MS is planer. All of the theoretical BVB results and the acquired experimental optical results were very similar.

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“…3 This dye exhibits a laser emission in the blue-green range upon excitation by a 337.1 nm nitrogen pulse, which is typical of diolefinic dyes containing heteroatoms. [4][5][6][7][8] Recently, El-delay et al 9 reported the photophysical properties and laser activity of BBVN, in protic and aprotic solvents. Owing to the high molar absorptivity of electronic transitions, the authors assigned the main absorption peak to a strongly allowed 1 pp* transition.…”

Section: Introductionmentioning

confidence: 99%

The optical signature of 2,6-bis((E)-2-(benzoxazol-2-yl)vinyl)naphthalene (BBVN) laser dye: a TDDFT study

et al. 2016

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Emission characteristics and photostability of 1,4-bis[β-(2-benzoxazolyl) vinyl]benzene (BBVB) laser dye

Cited by 23 publications

References 16 publications

A Study of the Electronic Absorption and Emission Spectra of DBDMA Dye: Solvent Effect, Energy Transfer, and Fluorescence Quenching

A Study of the Electronic Absorption and Emission Spectra of DBDMA Dye: Solvent Effect, Energy Transfer, and Fluorescence Quenching

Fluorescence quenching, DFT, NBO, and TD-DFT calculations on 1, 4-bis [2-benzothiazolyl vinyl] benzene (BVB) and meso-tetrakis (4-sulfonatophenyl) porphyrin (TPPS) in the presence of silver nanoparticles

The optical signature of 2,6-bis((E)-2-(benzoxazol-2-yl)vinyl)naphthalene (BBVN) laser dye: a TDDFT study

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