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First molecular electronic hyperpolarizability of two oxazoles dyes in solution

Abegão G., Luis M; Fonseca, Ruben D.; Santos, Francisco A.; Piguel, Sandrine; Rodrigues, José Joatan; Mendonça Renato, Cleber; Kamada, Kenji; De Boni, Leonardo (Universidad de la Costa, 2018-05-10)

Two π-conjugated oxazoles compounds dissolved in toluene were characterized by the hyper-Rayleigh scattering technique in order to determine the value of the first molecular hyperpolarizability (βHRS). Quantum-chemical ...
Oxazole Dyes With Potential For Photoluminescence Bioprobes: A Two-Photon Absorption Study

Abegão G., Luis M; Fonseca Rodriguez, Ruben Dario; Ramos, Tárcius N; Mahuteau Betzer, Florence; Piguel, Sandrine; Joatan, José R; Mendonça, Cleber Renato; Canuto, Sylvio; Silva, Daniel Luiz; De Boni, Leonardo (Journal of Physical Chemistry C, 2018-05)

In this work, six π-conjugated oxazole compounds dissolved in dichloromethane were characterized with linear and nonlinear optical measurements. Z-scan with femtosecond laser pulses was employed to determine the two-photon ...

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First molecular electronic hyperpolarizability of two oxazoles dyes in solution
...
Abegão G., Luis M | 2018-05-10

Two π-conjugated oxazoles compounds dissolved in toluene were characterized by the hyper-Rayleigh scattering technique in order to determine the value of the first molecular hyperpolarizability (βHRS). Quantum-chemical calculations using time-dependent density functional theory level were performed to calculate the static and dynamic βHRS theoretical values. Experimental βHRS have shown values of about 42 × 10 −30 cm 4 statvolt −1 and 31 × 10 −30 cm 4 statvolt −1 for both organic compounds, which are in a satisfactory accordance with the calculated results.

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Oxazole Dyes With Potential For Photoluminescence Bioprobes: A Two-Photon Absorption Study
...
Abegão G., Luis M | 2018-05

In this work, six π-conjugated oxazole compounds dissolved in dichloromethane were characterized with linear and nonlinear optical measurements. Z-scan with femtosecond laser pulses was employed to determine the two-photon absorption (TPA) spectra. Other photophysical parameters, such as absorbance, solvatochromism, lifetime fluorescence, and fluorescence anisotropy, were evaluated with linear optical techniques. The experimental TPA cross section spectra were adjusted by the sum-over-states (SOS) model, by which important parameters such as transition dipole moments and broadening parameters were determined. To better understand the TPA spectra of the oxazole compounds, quantum-chemical calculations using the response function formalism and the density functional theory level of theory were performed. Using the results provided by the quantum-chemical calculations and the broadening parameters estimated through the application of the SOS model, the TPA spectra were simulated by the superposition (summation) of individual homogeneous Lorentzian absorption profiles.

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Listar por autor "Abegão G., Luis M"

First molecular electronic hyperpolarizability of two oxazoles dyes in solution ﻿

Oxazole Dyes With Potential For Photoluminescence Bioprobes: A Two-Photon Absorption Study ﻿

Envíos recientes

First molecular electronic hyperpolarizability of two oxazoles dyes in solution

Oxazole Dyes With Potential For Photoluminescence Bioprobes: A Two-Photon Absorption Study

First molecular electronic hyperpolarizability of two oxazoles dyes in solution

Oxazole Dyes With Potential For Photoluminescence Bioprobes: A Two-Photon Absorption Study