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Observation of photoluminescence from the 5D1 state of the europium(III) decatungstate anion in aqueous solution

✍ Scribed by James R. Darwent; Colin D. Flint; Phil J. O'grady

Publisher
Elsevier Science
Year
1986
Tongue
English
Weight
290 KB
Volume
127
Category
Article
ISSN
0009-2614

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✦ Synopsis

Under UV or 21375 cm-' excitation the EuW,,Oz; ion shows luminescence from both the 'D, and 5D, excited states in H,O or D,O at room temperature. For the visible excitation in D,O the 5Do state is populated exclusively from the 'D, state. The lifetimes of these states in dilute D,O (H,O) solution are 3.8X10m3 s (240~10-~ s) and 7.1 x 10e6 s (3.4~10~~ s) respectively.

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