辐照导致的稀土离子变价

过渡金属离子系列

Mn4+变价专题

1.[Manganese-doped yttrium orthoaluminate: a potential material for holographic recording and data storage-prb-1998] Mn4+→Mn5+和Mn3+disproportionation reaction

2. ZnSnF6·6H2O:Mn4+
Mn4+直接变为Mn5+ and/or disproportionation reaction
[Photo-induced degradation and thermal decomposition in ZnSnF6·6H2O:Mn4+ red-emitting phosphor-OM-2015

2. K2SiF6:Mn2+ 
Xe lamp exposure,或者He–Cd (λ = 325 nm) > Ar+ (488 nm) > He–Ne laser (632.8 nm)都会导致degradation。Mn2+直接变为Mn3+ and/or disproportionation reaction Mn2+→Mn+和Mn3+
[Unique light-induced degradation in yellow-emitting K2SiF6:Mn2+ phosphor-JAP-2014

Mn2+变价光致变色

 

Bi变价专题

[X‑ray Induced Valence Change and Vacuum Referred Binding Energies of Bi3+ and Bi2+ in Li2BaP2O7—JPCC-2016]

补充-稀土配合物变价

In analogy to Ce(III) (see above), the photooxidations of Ln(II) seem to originate from fd states since the fd transitions terminate at d orbitals which are exposed to the ligands or the solvent. [Excited state properties of lanthanide complexes: Beyond ff states]

 

Photochemistry induced by metal-to-ligand charge transfer excitation

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