8453 diode-array uv-vis-nir spectrometer (Agilent technologies)
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8453 diode-array uv-vis-nir spectrometer
8453 Diode Array Uv Vis Nir Spectrometer, supplied by Agilent technologies, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/diode-array+uv%E2%88%92vis%E2%88%92nir+spectrometer+8453/pm34761431-227-12-11
Average 90 stars, based on 1 article reviews
8453 Diode Array Uv Vis Nir Spectrometer, supplied by Agilent technologies, used in various techniques. Bioz Stars score: 90/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
https://www.bioz.com/product/diode-array+uv%E2%88%92vis%E2%88%92nir+spectrometer+8453/pm34761431-227-12-11
Average 90 stars, based on 1 article reviews
8453 diode-array uv-vis-nir spectrometer - by Bioz Stars,
2026-09
90/100 stars
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other:Article Title: Molecular dyads of ruthenium(II)- or osmium(II)-bis(terpyridine) chromophores and expanded pyridinium acceptors: equilibration between MLCT and charge-separated excited states. Article Snippet: The synthesis, characterization, redox behavior, and photophysical properties (both at room temperature in fluid solution and at 77 K in rigid matrix) of a series of four new molecular dyads (2−5) containing Ru(II)− or Os(II)−bis(terpyridine) subunits as chromophores and various expanded pyridinium subunits as electron acceptors are reported, along with the reference properties of a formerly reported dyad, 1.. The molecular dyads 2−4 have been designed to have their (potentially emissive) triplet metal-to-ligand charge-transfer (MLCT) and charge-separated (CS) states close in energy, so that excited-state equilibration between these levels can take place.. Such a situation is not shared by limit cases 1 and 5. Article Title: Single-step versus stepwise two-electron reduction of polyarylpyridiniums: insights from the steric switching of redox potential compression. Article Snippet: Contrary to 4,4′-dipyridinium (i.e., archetypal methyl viologen), which is reduced by two single-electron transfers (stepwise reduction), the 4,1′-dipyridinium isomer (so-called “head-to-tail” isomer) undergoes two electron transfers at apparently the same potential (single-step reduction).. A combined theoretical and experimental study has been undertaken to establish that the latter electrochemical behavior, also observed for other polyarylpyridinium electrophores, is due to potential compression originating in a large structural rearrangement.. Three series of branched expanded pyridiniums (EPs) were prepared: N-aryl-2,4,6-triphenylpyridiniums (Ar-TP), N-aryl-2,3,4,5,6pentaphenylpyridiniums (Ar-XP), and N-aryl-3,5-dimethyl-2,4,6-triphenylpyridinium (Ar-DMTP). Article Title: Impact of the Extended 1,1′-Bipyridinium Structure on the Electron Transfer and π-Dimer Formation. Spectroelectrochemical and Computational Study Article Snippet: The electrochemical reduction of the extended 1,1′-bipyridinium dication was investigated in detail by means of semiquantitative in situ electron paramagnetic resonance (EPR), UV−vis−NIR spectroelectrochemistry, and density functional theory (DFT) calculations.. It was found that in the extended 1,1′-bipyridinium cation radical the spin density is localized on one of the pyridinium centers, which is in contrast to charge delocalization within the 4,4′-bipyridinium radical cation reported in the literature.. The charge and spin density separation in the extended 1,1′-bipyridinium cation radical leads to π-dimer formation in a triplet electronic configuration. |