High Photothermal Activity within Neutral Nickel Dithiolene Complexes Derived from Imidazolium-Based Ionic Liquids

详细信息    查看全文

• 作者：Kenny Mebrouk ; Franck Camerel ; Olivier Jeannin ; Benoit Heinrich ; Bertrand Donnio ; Marc Fourmigué
• 刊名：Inorganic Chemistry
• 出版年：2016
• 出版时间：February 1, 2016
• 年：2016
• 卷：55
• 期：3
• 页码：1296-1303
• 全文大小：452K
• ISSN：1520-510X

文摘

A new series of nickel N,N′-dialkylimidazolidine-2,4,5-trithione complexes ([Ni(R₂timdt)₂]) carrying linear or branched carbon chains (R = n-C₄H₉, n-C₈H₁₇, n-C₁₂H₂₅, n-C₁₆H₃₃, 2-ethylhexyl, 2-butyloctyl, phytanyl) have been obtained through an original synthetic pathway starting from easily available imidazolium-based ionic liquids. The chemical structures of these nickel complexes were confirmed by NMR and high-resolution mass spectroscopies as well as by X-ray analysis performed on single crystals. The complexes strongly absorb in the near-IR (NIR) region around 1000 nm, with high extinction coefficients reaching 80 000 M^–1 cm^–1. They are able to efficiently convert NIR light into heat under laser irradiation with very high photothermal conversion efficiencies (around 30%).