Electrochemical deposition of a semiconducting gold dithiolene complex with NIR absorption

Helen Benjamin, Moritz L. Müller, Sergejs Afanasjevs, Konstantin V. Kamenev, Neil Robertson

Research output: Contribution to journalArticlepeer-review

Abstract

Here, the synthesis of a new anionic gold dithiolene complex, NBu4·[1-i], and that of its corresponding neutral gold complex 2 is reported. Complex 2 shows strong absorption into the IR, semiconductivity (σRT = 3.06 × 10−7 S cm−1) with an activation energy of 0.25 eV, and weakly temperature dependent paramagnetic susceptibility, indicating strong intermolecular interactions in the solid state. As a consequence of their strong intermolecular interactions, neutral gold dithiolene complexes are often highly insoluble, limiting their utility and processability. Electrochemical deposition is used to deposit conductive films of complex 2, which retain the NIR properties present in the bulk material, indicting that the strong intermolecular interactions are retained in the film.
Original languageEnglish
JournalDalton Transactions
Early online date24 Sep 2020
DOIs
Publication statusE-pub ahead of print - 24 Sep 2020

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