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Issue 12, 2002
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Tuning of intervalence charge transfer energies by substituents in one-dimensional bis(triarylamine) systems

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Abstract

We synthesised a series of linear bis(triarylamine) species whose triarylamine redox centres have different local redox potentials which were tuned by substituents in the para-position. The mixed-valence (MV) radical cations of these systems were generated and investigated in situ by UV/Vis/NIR spectroelectrochemistry. The electronic coupling between the redox centres was analysed by the generalised Mulliken–Hush theory which gave a practically constant coupling. The radical cations of the species show an intervalence charge transfer (IV-CT) band in the NIR whose energy varies linearly with the electrochemical redox potential splitting. This correlation proves that the Marcus–Hush two-level model is an adequate way to describe the electronic situation in these linear MV systems.

Graphical abstract: Tuning of intervalence charge transfer energies by substituents in one-dimensional bis(triarylamine) systems

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Publication details

The article was received on 07 Aug 2002, accepted on 24 Oct 2002 and first published on 13 Nov 2002


Article type: Paper
DOI: 10.1039/B207736A
J. Chem. Soc., Perkin Trans. 2, 2002, 2039-2043

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    Tuning of intervalence charge transfer energies by substituents in one-dimensional bis(triarylamine) systems

    C. Lambert and G. Nöll, J. Chem. Soc., Perkin Trans. 2, 2002, 2039
    DOI: 10.1039/B207736A

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