Abstract
Organic chromophores are of interest for use in remote luminescent chemical sensor applications, as they can be highly sensitive to conditions such as oxygen concentration, pH, temperature, metal ion activity, etc. Small fluctuations in local environmental parameters can lead to substantial perturbations in the optical properties of select organic probe molecules. Lifetime studies were performed on the S1 emission of tetra-4-sulfonatophenylporphyrin and the zinc (II) and cadmium (II) adducts in sol-gel derived aluminosilicate hosts. Vibronically-coupled quenching was observed to occur as a function of the complexed transition metal ion.
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Yates, L.M., Wang, X.J. & Knobbe, E.T. Continuous and time-resolved luminescence spectroscopy of sulfonatoporphyrin dopants in sol-gel hosts. J Sol-Gel Sci Technol 2, 745–749 (1994). https://doi.org/10.1007/BF00486342
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DOI: https://doi.org/10.1007/BF00486342