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Photophysics and photochemistry of main group metals with an s² electron configuration. Luminescence quenching and photoreduction of trihydroxoplumbate(II) by hydroxide

URN to cite this document:
urn:nbn:de:bvb:355-epub-135900
Becht, A. ; Vogler, Arnd
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Date of publication of this fulltext: 17 Mar 2010 09:37


Abstract

The luminescence of Pb(OH) 3 − in deaerated aqueous solution is quenched by hydroxide withk = 1.87 × 105 Lmol−1 s−1. It is suggested that this quenching is associated with an electron transfer from hydroxide to Pb(OH) 3 − in its3P1 sp-excited state. This assumption is supported by the photochemical behaviour of Pb(OH) 3 − which is photoreduced to metallic lead. The efficiency of the photolysis increase with hydroxide concentration.


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