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- W2004569851 abstract "Abstract The effect of porphyrin ring distortion on the electrochemical and emission characteristics of a series of alkyl-bridged, basket-handle porphyrins and their Zn 2+ derivatives are reported. The degree of distortion can be controlled by varying the chain length of the bridging group. The effects of distortion are apparent in quenching, broadening and red shifts of the emission bands relative to the corresponding planar derivative, and the maximum effects are observed for the most distorted isomer. The energy of the emission maxima of both Q(0,0) and B(0,0) transitions show a linear correlation with the chain length of the bridging group. Redox potential data suggest easier oxidations and harder reductions both in the ground and first singlet-excited states relative to planar H 2 TPP. In addition to Q band emission, the Zn 2+ derivatives show emission from the upper excited state (S 2 ) and the decreased quantum yield (φ S 2 f ) is accounted for in terms of a decreased energy gap between the S 1 and S 2 excited states in the distorted Zn +2 porphyrins." @default.
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- W2004569851 title "Effect of porphyrin ring distortion on the singlet-excited state properties of alkyl-bridged, basket-handle porphyrins" @default.
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- W2004569851 doi "https://doi.org/10.1016/1010-6030(93)80115-p" @default.
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