Excited state absorption and decay kinetics of near IR polymethine dyes

Padilha, Lázaro A.; Webster, Scott; Hu, Honghua; Przhonska, Olga V.; Hagan, David J.; Stryland, Eric W. Van; Bondar, Mykhailo V.; Davydenko, Iryna; Slominsky, Yuriy L.; Kachkovski, A.D.

doi:10.1016/j.chemphys.2008.05.007

Cited by 63 publications

(62 citation statements)

References 23 publications

(40 reference statements)

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“…It was shown [44,45,82,135,137,169] that the cyclization of the chromophore by one or several bridges does not change principally the nature of the first electron transition and hence the long-wavelength absorption band shape, as one can see when compare the spectra of NIR dyes 39-42 containing the saturated bridges in the Figure 8 with spectra of other PMDs. It was shown [3][4][5] that introduction of one or two, or even three trimethylene bridges in the polymethine chain leads firstly to dye stabilization preventing the dye molecule from conformational transformation.…”

Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 94%

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Molecular design of near infrared polymethine dyes: A review

et al. 2015

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Section: A C C E P T E D Accepted Manuscriptmentioning

confidence: 94%

“…A less intense peak at the shortwavelength side of the band was found to correspond to 0→1` vibronic transition [43]. Also it was reliably shown [82] that the second electron transition should be positioned at region 500-600 nm; its intensity is too low to be observed by one-photon spectroscopy.…”

Section: A N U S C R I P Tmentioning

confidence: 95%

Molecular design of near infrared polymethine dyes: A review

et al. 2015

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“…To get an understanding of the third order nonlinear optical property (NLO) of these QY 54 and QY 54 A, we investigated the third‐order nonlinear susceptibility χ (3) , which is a wavelength dependent macroscopic parameter. The Z‐scan protocol concurrently gives the magnitude of nonlinear absorption coefficient (β), the (+,‐) sign and magnitude of nonlinear refraction (n 2 ) ,. The third‐order nonlinear susceptibility χ (3) is determined by β and n 2 .…”

Section: Resultsmentioning

confidence: 99%

NLO‐Phoric Emissive Quinoxaline Analog of Quinoline Yellow 54 and Z‐Scan Studies

Ayare

Rajeshirke

Sreenath³

et al. 2019

ChemistrySelect

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Quinoxaline derivative QY 54 A, an analog of commercially available C.I. (Colour index) Disperse Yellow 54 (quinoline derivative) is synthesized and confirmed by 1 H, 13 C NMR, LC-MS, and CHN analysis. It is emissive (512 nm) with a quantum yield (φ F ) = 0.34. The electrochemical properties of both the dyes were investigated using cyclic voltammetry (CV). The titled dyes are thermally stable (up to 350°C). A comprehensive study of linear and nonlinear optical (NLO) properties of commercial dye (QY 54) and its analog (QY 54 A) are performed by Z-scan and Density functional theory (DFT). The NLO (β o , γ o ) values obtained are compared with the NLO (β o , γ o ) values of urea.Ten different functionals are used to see the effect of %Hartree Fork (HF) exchange on computed NLO properties of both the dyes. The functional M06-HF (100% HF) and ωB97 (0-100% HF) perform better for evaluating NLO properties. The Z-scan and DFT result reveal that QY 54 A and QY54 are excellent NLOphores. The stability and enhancement in NLO properties of QY 54 A are due to electrophilicity index (ω), the Intramolecular charge transfer (ICT) character is confirmed by HOMO-LUMO study (2.19 eV), quinoid character (0.0230 A°) and molecular electrostatic potential (MEP) plots.[a] N. N. Ayare, M. Rajeshirke, Prof. N. Sekar

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“…The Z‐scan technique applied to resolute the magnitude and sign of nonlinear absorption coefficient (β) and nonlinear refraction (n 2 ). In Z‐scan experiments, the open‐aperture method was used to calculate the (β) and the closed aperture method used to evaluate (n 2 ) values …”

Section: Resultsmentioning

confidence: 99%

NLO Properties of 2‐Napthol Monoazo Disperse Dyes by DFT and Z‐Scan Technique – A Detailed Study

Yadav

Sreenath²,

Chitrambalam³

et al. 2019

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The non‐linear and linear optical properties of 2‐napthol based four monoazo dyes were examined by computational and Z‐scan methods. Time‐dependent (TD)‐density functional theory (DFT) computations were used to evaluate the linear polarizability (α), first‐order hyperpolarizability (β) and second‐order hyperpolarizability (γ) using global hybrid and range separated hybrid functionals at 6–311+ G (d) basis set. The functional, ωB97 performed better in the determination of linear polarizability (α) and ωB97X−D performed better in the determination of the first‐order hyperpolarizability (β) and second‐order hyperpolarizability (γ) among the global hybrid and range separated hybrid functionals. To support our theoretical findings for α, β, and γ, we have correlated with the Hammett‐coefficient (σ), excited state coefficient (σex) as well as by hyper‐hardness (Γ) relations. Third order NLO parameters – non‐linear refractive index (η2), non‐linear absorption coefficient (β), real parts and the imaginary parts of third order susceptibility (χ(3)), and second order hyperpolarizability (γ) were investigated by close and open aperture methods using Z‐scan technique. The –NO2 substituted dye 2 shows higher value of molecular susceptibility (χ(3)), polarizability (α), and hyperpolarizability (β, γ) parameters among the studied azo dyes. They are likely to have potential applications in optoelectronics and photonics.

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Excited state absorption and decay kinetics of near IR polymethine dyes

Cited by 63 publications

References 23 publications

Molecular design of near infrared polymethine dyes: A review

Molecular design of near infrared polymethine dyes: A review

NLO‐Phoric Emissive Quinoxaline Analog of Quinoline Yellow 54 and Z‐Scan Studies

NLO Properties of 2‐Napthol Monoazo Disperse Dyes by DFT and Z‐Scan Technique – A Detailed Study

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