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  • 1
    Electronic Resource
    Electronic Resource
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 92 (1990), S. 4718-4723 
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The photoexcited triplet state of two porphyrinoids, H2TTP and a Cd complex of Texaphyrin (Cd-TxP), oriented in liquid crystals were examined by time-resolved electron paramagnetic resonance (EPR) spectroscopy as a function of temperature. The low probability of molecular tumbling in the liquid crystalline phase allows the detection of triplets by fast EPR, at temperatures (300 K) which are above the hosts' melting points, and where the fluid properties of the matrices are maintained. Line shape and kinetic analyses of the triplet spectra provide data on spin relaxation rates, interchromophore interactions, and on the dynamic behavior of the liquid crystalline hosts, driven by the external magnetic field.
    Type of Medium: Electronic Resource
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