Luminescence from the ligand to metal charge transfer state of the neptunyl (V) ion and its complexes in solution

Bradshaw, R. W.; Sykes, Daniel; Natrajan, Louise S.; Taylor, Robin; Livens, Francis R.; Faulkner, Stephen

doi:10.1088/1757-899x/9/1/012047

IOP Conf. Ser.: Mater. Sci. Eng.

2010

DOI: 10.1088/1757-899x/9/1/012047

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Luminescence from the ligand to metal charge transfer state of the neptunyl (V) ion and its complexes in solution

R. W. Bradshaw¹,

Daniel Sykes²,

Louise S. Natrajan³

et al.

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Cited by 3 publications

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“…The lifetime is significantly shorter than its uranyl(VI) counterparts in fluid solution (1.66 ms in 2) † and also than that reported from the 5f 1 uranyl(V) ion in the literature. 19 All previous reports of emission from NpO 2 (V) 20 and NpO 2 (VI) species are short-lived (o62 ns in solution), § and emission from 1 is also expected to be short due to efficient nonradiative relaxational pathways through the 5f 1 manifold. The energy spacings between the three maxima ( Fig.…”

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confidence: 99%

Neptunyl(vi) centred visible LMCT emission directly observable in the presence of uranyl(vi)

et al. 2015

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mentioning

confidence: 99%

Neptunyl(vi) centred visible LMCT emission directly observable in the presence of uranyl(vi)

et al. 2015

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Redox and Photophysical Behaviour of Complexes of NpO2+ Ions with Carbomyl methyl phosphine oxide in 1-Hexyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide Ionic Liquid

Jayachandran

Gupta

Sundararajan

et al. 2017

Electrochimica Acta

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The first structural and spectroscopic study of a paramagnetic 5f DO3A complex

Natrajan

2012

Dalton Trans.

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A 5f(2) uranium(IV) complex of the macrocycle DO3A (DO3A = [4,7,10-tris-carboxymethyl-,1,4,7,10-tetraaza-cyclododec-1-yl]-acetic acid) has been prepared and characterised in the solid state and in solution. The DO3A scaffold containing no strongly absorbing chromophores enables the facile detection of relatively long-lived (8-13 ns) UV-visible emission that possesses significant charge transfer character tentatively assigned to deactivation of the excited (3)F(2) 5f(1) 6d(1) electronic configuration. This study demonstrates, for the first time, that luminescence of simple U(iv) chelates is detectable in the absence of an antenna, potentially serving as a diagnostic tract for environmental U(IV) species.

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Luminescence from the ligand to metal charge transfer state of the neptunyl (V) ion and its complexes in solution

Cited by 3 publications

References 14 publications

Neptunyl(vi) centred visible LMCT emission directly observable in the presence of uranyl(vi)

Neptunyl(vi) centred visible LMCT emission directly observable in the presence of uranyl(vi)

Redox and Photophysical Behaviour of Complexes of NpO2+ Ions with Carbomyl methyl phosphine oxide in 1-Hexyl-3-methylimidazolium bis (trifluoromethylsulfonyl) imide Ionic Liquid

The first structural and spectroscopic study of a paramagnetic 5f DO3A complex

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