A comparative study of optical properties and X-ray induced luminescence of octahedral molybdenum and tungsten cluster complexes

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Abstract

Octahedral metal cluster complexes have high potential for biomedical applications. In order to evaluate the benefits of these moieties for combined CT/X-ray luminescence computed tomography, this paper compares photoluminescence, radiodensity and X-ray induced luminescence properties of eight related octahedral molybdenum and tungsten cluster complexes [{M6I8}L6]n (where M is Mo or W and L is I-, NO3-, OTs- or OH-/H2O). This article demonstrates that despite the fact that molybdenum cluster complexes are better photoluminescence emitters, tungsten cluster complexes, in particular (Bu4N)2[{W6I8}I6], demonstrate significantly higher X-ray induced luminescence due to a combination of relatively good photoluminescence properties and high X-ray attenuation. Additionally, photo-degradation of [{M6I8}(NO3)6]2- was evaluated.

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Evtushok, D. V., Melnikov, A. R., Vorotnikova, N. A., Vorotnikov, Y. A., Ryadun, A. A., Kuratieva, N. V., … Shestopalov, M. A. (2017). A comparative study of optical properties and X-ray induced luminescence of octahedral molybdenum and tungsten cluster complexes. Dalton Transactions, 46(35), 11738–11747. https://doi.org/10.1039/c7dt01919j

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