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- W2069452409 abstract "The photophysical properties of 1,1′-dimethyl-4,4′dipyridinium (methyl viologen, MV2+) intercalated within zirconium phosphate (ZrP) were investigated. The intercalation of MV2+ within ZrP was achieved by ion-exchange using a hydrated form of ZrP with six water molecules per formula unit and an interlayer distance of 10.3 Å. The intercalation yields a new phase with an interlayer distance up to 10.6 Å. The MV2+-exchanged ZrP material was characterized using elemental analysis, XRPD and IR data. The MV2+-exchanged ZrP materials show a red shift in the UV–Vis spectra in contrast with solution. The photoexcitation of nitrogen purged, MV2+-exchanged ZrP water suspensions with UV light leads to fluorescence emission with a maximum at 337 nm. The photoexcitation of MV2+-exchanged ZrP suspensions without nitrogen purging yields two fluorescence emissions with maxima at 337 and 450 nm. The emission in the visible region can be attributed to a photodecomposition product. The fluorescence quantum yields indicate that the emission of MV2+-exchanged ZrP is of the same order of magnitude as that of MV2+ in water indicating a strong deactivation of the excited state by non-radiative pathways." @default.
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- W2069452409 date "2007-04-01" @default.
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- W2069452409 title "Photophysical characterization of methyl viologen ion-exchanged within a zirconium phosphate framework" @default.
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- W2069452409 doi "https://doi.org/10.1016/j.ica.2006.08.052" @default.
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