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Dye-sensitized solar cells are increasingly establishing themselves as third generation photovoltaic technology which can be manufactured with easily available materials and low-cost processes. In this context, the replacement of the liquid electrolyte with quasi-linear polymer electrolyte membranes is here proposed, with the aim of increasing the durability of the device. The membranes are photochemically...
Visible-light-absorbing materials based on TiO 2 modified with tungstosilicic acid (TSA; H 4 SiW 12 O 40 ) were prepared using titanium isopropoxide as precursor and urea as a low-cost pore-forming agent. X-ray diffraction (XRD) measurements show evidence about the presence of anatase TiO 2 in all samples and shifting of the anatase–rutile transition temperature...
Novel phosphorous triazatetrabenzocorrole (4) bearing non-peripheral octatrifluorobutoxy groups was successfully synthesized, with an aim to develop potential far-red sensitizer for dye sensitized solar cells. The dye was characterized by 1 H NMR, IR, mass, and UV–vis spectral techniques. It showed excellent solubility in majority of common organic solvents. Aggregation behavior of the dye...
Two phosphorescent cocrystals were prepared by 1,4-diiodotetrafluorobenzene (1,4-DITFB) and N-methylcarbazole (cocrystal 1) and N-ethylcarbazole (cocrystal 2) based on CI⋯π halogen bond, π-hole (π h )⋯π bond and CH⋯π, CH⋯F hydrogen bond as well as F⋯F contacts, in which 1,4-DITFB molecule acts simultaneously as the cement to link luminescence molecules and the heavy atom perturber to enhance...
Photorelease of La 3+ with turn on fluorescent detection is described. Complex (1) is synthesized by treatment 2,2′-(((ethane-1,2-diylbis(oxy)bis(2,1-phenylene))bis(methanylylidene)) bis(azanylylidene))diphenol with LaCl 3 ·7H 2 O in 1:1 molar ratio. Upon irradiation with UV light, 1 undergoes La 3+ release and converts to 1,2-bis(2-(benzoxazol-2-yl)phenoxy)ethane (2)...
The photophysics of the 2H-chromene (CF), was revisited in order to rationalize the vibronic effect, in particular the fluorescence quantum yields dependence on the excitation wavelength to the lowest singlet excited state (S 1 ). A Full topological analysis of the potential energy surface (PES) is carried out at CIS level with CR-EOMCCSD(T) excitation energies computed at all relevant points...
BiOI microspheres were synthesized by a solvothermal synthesis route from Bi(NO 3 ) 3 ·5H 2 O, using ethylene glycol in the presence of the ionic liquid 1-butyl-3-methylimidazolium iodide. The autoclave temperature was maintained constant at 120°C and the reaction time was varied from 2 to 48h. The obtained materials were characterized by XRD, SEM, TEM, EDS, nitrogen adsorption,...
In this report, we provide investigations about the effect of Sudlow's site I and II blockers on the platinum anticancer drugs binding. The effect of warfarin, aspirin, ibuprofen and meloxicam on the platinum binding to HSA has been investigated through gel-filtration chromatography, UV–vis, CD, fluorescence spectroscopy and the inductively coupled plasma atomic emission spectroscopy (ICP(AES)) method...
Various unsymmetric indolylmaleimides were synthesized. Their photophysical properties and affinities for amyloid fibrils were evaluated. Some unsymmetric indolylmaleimides have large Stokes shifts of more than 120nm, fluorescence emission maxima wavelengths of more than 550nm and different emissions under UV irradiation at 365nm. From the results of histopathologic methods using stains, 3-(1H-indol-3-yl)-1-methyl-4-phenyl-1H-pyrrole-2,5-dione...
Deferiprone (L1) is an effective iron chelating drug which is widely used for the treatment of iron overload diseases. Although L1 itself does not absorb visible light, the absorption spectra of its Fe(III) complexes exhibit intensive absorption bands between 300 and 800nm. It was found that L1–Fe(III) complex is stable under irradiation with visible light but undergoes fast decomposition under UV...
In this work, different thermal treatments of titanium isopropoxide-derived photo-catalyst precursors, designed with the purpose of generating C-doped TiO 2 photo-catalysts using carbon atoms present in the TiOx gel precursors as dopants, are presented. Specifically, these look at varying the standard calcination techniques using heat treatments in He (rather than calcination in air) and lower...
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