Nature of the influence of a solvent on the fluorescence quantum yield of solutions of the fluorescent probe 4-dimethylaminochalcone

Bakhshiev, N. G.; Gularyan, S. K.; Dobretsov, G. E.; Kirillova, A. Yu.; Sarkisov, O. M.; Svetlichnyĭ, V. Yu.

doi:10.1134/s0030400x10120155

Cited by 7 publications

(3 citation statements)

References 4 publications

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“…where τ 0 is the fluorescence lifetime and ∅ f is emission yield of the sample molecule. have developed independent equations for the absorption and fluorescence maxima as [22,23] ν a −ν f ¼ m 1 f ε; n ð Þþconst:…”

Section: Computational Detailsmentioning

confidence: 99%

Solvatochromic study of 3‐N‐(N′‐methylacetamidino)benzanthrone and its interaction with dopamine by the fluorescence quenching mechanism

Bharathi¹,

Siddlingeshwar²,

Shivraj³

et al. 2018

Luminescence

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The change in photophysical properties of the organic molecule due to solvatochromic effect caused by different solvent environments at room temperature gives information about the dipole moments of 3-N-(N'-methylacetamidino)benzanthrone (3-MAB). The quantum yield, fluorescence lifetime of 3-MAB was measured in different solvents to calculate radiative and non-radiative rate constants. The results revealed that the excited state dipole moment (μ ) is relatively larger compared to the ground state dipole moment (μ ), indicating the excited state of the dye under study is more polar than the ground state and the same trend is noticed with theoretical calculations performed using the CAM-B3LYP/6-311+G(d,p) method. Further, the study on preferential solvation was carried out for 3-MAB dye in ethyl acetate-methanol solvent mixture. The fluorescence quenching method has been employed for the detection of dopamine using 3-MAB as fluorescent probe, using steady-state and time resolved methods at room temperature. The method enables dopamine in the micro molar range to be detected. Also, an attempt to verify the quenching process by employing different models has been tried. Various rate parameters are measured using these models, our results indicates the quenching process is diffusion limited.

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Section: Computational Detailsmentioning

confidence: 99%

Solvatochromic study of 3‐N‐(N′‐methylacetamidino)benzanthrone and its interaction with dopamine by the fluorescence quenching mechanism

Bharathi¹,

Siddlingeshwar²,

Shivraj³

et al. 2018

Luminescence

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“…[3] Whereas experimental dipole moment measurements in the electronic ground state are straightforward, their exact values in electronically excited states can only be determined reliably using gas-phase spectroscopicm ethods. Despite numerous attemptst oi mprove the original Lippert-Matagat heory, [4][5][6][7][8][9][10] for ad etermination of excited-state dipole moments (or at least their changes from the ground state values),t he resultsa re not very encouraging. [11][12][13] On the other hand, theoretical approaches frequentlyfail when the excited states involve considerable charge-transfer character.…”

Section: Introductionmentioning

confidence: 99%

Excited‐State Dipole Moments and Transition Dipole Orientations of Rotamers of 1,2‐, 1,3‐, and 1,4‐Dimethoxybenzene

et al. 2018

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Rotationally resolved electronic Stark spectra of rotamers of 1,2-, 1,3-, and 1,4-dimethoxybenzene have been recorded and analyzed using evolutionary strategies. The experimentally determined dipole moments as well as the transition dipole moments are compared to the results of ab initio calculations. For the electronic ground states of the experimentally observed dimethoxybenzenes, the permanent dipole moments can be obtained from vectorial addition of the monomethoxybenzene dipole moment. However, this is not the case for the electronically excited states. This behavior can be traced back to a state mixing of the lowest electronically excited singlet states for the asymmetric rotamers. For the symmetric rotamers however, this is not valid. We discuss several possible reasons for the non-additivity of the dipole moments in the excited states of the symmetric rotamers.

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“…However, it hardly be said about the properties of chalcone and its amino-derivatives. Due to the flexible -CQC-C(-)QO chain and non-planar structure [8,9] they have distinguishing features, such as fluorescence quenching in protic solvents [4,[10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Luminescent properties of chalcone and its aminoderivatives

Komarova

Sakipov

Plotnikov

et al. 2015

Journal of Luminescence

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Nature of the influence of a solvent on the fluorescence quantum yield of solutions of the fluorescent probe 4-dimethylaminochalcone

Cited by 7 publications

References 4 publications

Solvatochromic study of 3‐N‐(N′‐methylacetamidino)benzanthrone and its interaction with dopamine by the fluorescence quenching mechanism

Solvatochromic study of 3‐N‐(N′‐methylacetamidino)benzanthrone and its interaction with dopamine by the fluorescence quenching mechanism

Excited‐State Dipole Moments and Transition Dipole Orientations of Rotamers of 1,2‐, 1,3‐, and 1,4‐Dimethoxybenzene

Luminescent properties of chalcone and its aminoderivatives

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