Media polarity and concentration roles on the third order nonlinear behaviors of thiazine dyes

Sadigh, M. Khadem; Zakerhamidi, M.S.

doi:10.1016/j.optlastec.2017.10.007

Cited by 19 publications

(5 citation statements)

References 34 publications

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“…3, we observed that the absorption peak for the sample in all solvents lies within the resonance absorption range of used laser source. Furthermore, the spectrum covers the visible region, and the shift in the absorption towards a red region by increasing the solvent polarity is the consequence of positive solvatochromism and the corresponding shift is bathochromic shift [21]. Bathochromic shift is the outcome of π-π* transition where the ground state is less polarized than the excited state [21].…”

Section: Uv-visible Absorption Studymentioning

confidence: 99%

“…Furthermore, the spectrum covers the visible region, and the shift in the absorption towards a red region by increasing the solvent polarity is the consequence of positive solvatochromism and the corresponding shift is bathochromic shift [21]. Bathochromic shift is the outcome of π-π* transition where the ground state is less polarized than the excited state [21]. Table 1 gives the spectral features of polar solvents and linear absorption coe cient of the acid blue 129 dye in polar solvents.…”

Section: Uv-visible Absorption Studymentioning

confidence: 99%

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Nonlinear Absorption Features of Acid Blue 129 Dye in Polar Solvents: Role of Solvents on Solute Molecule

Jeyaram¹

2023

J Fluoresc

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This paper focuses the study of nonlinear absorption (NLA) features of anthraquinone dye namely, acid blue 129 with various polar solvents including ethanol, methanol, acetone, 1-proponal and DMSO. The acid blue 129 dye in polar solvents is characterized by UV-Visible absorption and emission study. The NLA measurements of acid blue 129 dye is examined via open aperture (OA) Z-scan method employing at 650 nm wavelength. The OA curve of the experimental dye exhibits both saturable absorption (SA) and reveres saturable absorption (RSA) characters, which results from negative and positive NLA coe cient (β). The order of ground and excited state absorption cross-section is measured to be 10 22 m 2 and 10 18 m 2 , respectively and proved the existence RSA in acid blue 129 dye. The order of NLA coe cient and imaginary component of the third-order nonlinear susceptibility of acid blue 129 dye in polar solvent is calculated to be 10 3 cm/W and 10 5 esu, respectively. The multi-parameter scale viz., Kamlet-Abboud-Taft is used to measure the in uence of solvent parameters on solute molecule. The results from the experiments suggest that the acid blue 129 is a suitable candidate for nonlinear optical (NLO) applications.

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Section: Uv-visible Absorption Studymentioning

confidence: 99%

Section: Uv-visible Absorption Studymentioning

confidence: 99%

Nonlinear Absorption Features of Acid Blue 129 Dye in Polar Solvents: Role of Solvents on Solute Molecule

Jeyaram¹

2023

J Fluoresc

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“…Molecular surrounding environment has had an influence on the physical and chemical behavior of organic materials [19]. The interaction between solute and solvent is divided into specific (hydrogen bonding) and non-specific (dielectric enhancement) interactions and the effect of solvent on solute molecules can be determined by using solvatochromism and solvent polarity index [20]. Polar solvents have a large dipole moment and are classified as polar protic and aprotic solvents.…”

Section: Introductionmentioning

confidence: 99%

Study of Third-order Nonlinear Optical Properties of Basic Violet 3 Dye in Polar Protic and Aprotic Solvents

Jeyaram

2021

J Fluoresc

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The present work aims to study of third-order nonlinear optical (TONLO) behavior of basic violet 3 dye dissolved in polar protic and aprotic solvents, namely, ethanol, 1-propanol, acet0one and dimethyl sulfonate (DMSO), respectively. The polarity of the solvent used to have a substantial impact on the linear and TONLO properties of the dye sample. The dye exhibit self-defocusing nonlinearity due to thermally induced nonlinear refractive index and nonlinear absorption coefficient reveals the character of both saturable and reverse saturable absorption (RSA). The order of magnitude of nonlinear refractive index (n2) and nonlinear coefficient of absorption (β) of dye sample was determined to be 10 -7 cm 2 /W and 10 -3 cm/W, respectively. The real and imaginary factors of the TONLO susceptibility of basic violet 3 dye were measured to be the power of 10 -5 esu. The results are revealed that the possibility of utilizing the dye sample in various photonics and optoelectronics applications.

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“…Properties of solution-phase noble metal clusters in the size regime of 1–3 nm have drawn significant interest in the last few year because of unique properties dependent on the structure, where more than 100 such clusters have been synthesized and characterized so far (ref and references therein). Clusters of noble metal atoms can have light absorption and emission properties useful for applications, including photodynamic therapy, − photovoltaics, − optical memory, − imaging, − sensors, − and biolabels. − Noble metal clusters demonstrate strong luminescence, − tunability in the absorption wavelength, and also a large two-photon absorption (TPA) cross-section. ,, Materials that exhibit TPA have advantages in tighter spatial confinement, as well as in accessing electronic excitation of twice the incident photon energy, and can be particularly useful in photodynamic therapy, − imaging, − and optical memory, , as well as in confocal microscopy , and microfabrication. − The possible applications of noble metal clusters are being expanded by using them as building blocks to form superclusters. , We have investigated one-photon absorption (OPA) and TPA spectra of [Au 25 (SR) 18 ] −1 by applying density functional theory (DFT) and time-dependent DFT (TDDFT). The large TPA cross-section was explained in terms of resonance enhancement .…”

Section: Introductionmentioning

confidence: 99%

Theoretical Analysis of Optical Absorption and Emission in Mixed Noble Metal Nanoclusters

2018

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In this work, we studied theoretically two hybrid gold-silver clusters, which were reported to have dual-band emission, using density functional theory (DFT) and linear and quadratic response time-dependent DFT (TDDFT). Hybrid functionals were found to successfully predict absorption and emission, although explanation of the NIR emission from the larger cluster (cluster 1) requires significant vibrational excitation in the final state. For the smaller cluster (cluster 2), the Δ H(0-0) value calculated for the T1 → S0 transition, using the PBE0 functional, is in good agreement with the measured NIR emission, and the calculated T2 → S0 value is in fair agreement with the measured visible emission. The calculated T1 → S0 phosphorescence Δ H(0-0) for cluster 1 is close to the measured visible emission energy. In order for the calculated phosphorescence for cluster 1 to agree with the intense NIR emission reported experimentally, the vibrational energy of the final state (S0) is required to be about 0.7 eV greater than the zero-point vibrational energy.

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Media polarity and concentration roles on the third order nonlinear behaviors of thiazine dyes

Cited by 19 publications

References 34 publications

Nonlinear Absorption Features of Acid Blue 129 Dye in Polar Solvents: Role of Solvents on Solute Molecule

Nonlinear Absorption Features of Acid Blue 129 Dye in Polar Solvents: Role of Solvents on Solute Molecule

Study of Third-order Nonlinear Optical Properties of Basic Violet 3 Dye in Polar Protic and Aprotic Solvents

Theoretical Analysis of Optical Absorption and Emission in Mixed Noble Metal Nanoclusters

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