Publications by authors named "Pedro J S B Caridade"

Primarily owing to the pronounced fluorescence exhibited by its reduced form, resazurin (also known as alamarBlue) is widely employed as a redox sensor to assess cell viability in in vitrostudies. In an effort to broaden its applicability for in vivo studies, molecular adjustments are necessary to align optical properties with the near-infrared imaging window while preserving redox properties. This study delves into the theoretical characterisation of a set of fluorinated resazurin derivatives proposed by Kachur et al.

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A user-friendly (time-dependent) density functional theory based algorithm is proposed to design new donor-spacer-acceptor systems for electron transfer reactions. This algorithm is focused on metal-free organic compounds, most of which contain aromatic or alkene moieties. The oxidation and reduction potentials are calculated, together with the excited-state energy difference including the zero-point energy and the structural properties required to calculate an electron transfer Gibbs free energy change.

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Quasiclassical trajectories have been run for the title atmospheric reaction over the range of temperatures 5 ≤ T/K ≤ 3000 on a recently proposed single-sheeted double many-body expansion (DMBE) potential energy surface for ground-state N2O((1)A'). As typical in a capture-like reaction, the rate constant decreases with temperature for 50 ≤ T/K ≤ 800 K, while showing a small dependence at higher temperature regimes. At room temperature, it is predicted to have a value of (20.

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We investigate the title atmospheric reaction of highly excited O(3) with vibrationally cold OH. Particular attention will be paid to initial vibrational energies of O(3) between 9 and 21 kcal mol(-1). The calculations employ the quasiclassical trajectory method and the realistic double many-body expansion potential energy surface for HO(4)((2)A).

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Classical trajectory calculations using the MERCURY/VENUS code have been carried out on the H+O(2) reactive system using the DMBE-IV potential energy surface. The vibrational quantum number and the temperature were selected over the ranges nu=0 to 15, and T=300 to 10 000 K, respectively. All other variables were averaged.

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