Lanthanide Sensitization with Ruthenium Carbon-Rich Complexes and Redox Commutation of Near-IR Luminescence

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• 作者：Lucie Norel ; Emmanuel Di Piazza ; Min Feng ; Antoine Vacher ; Xiaoyan He ; Thierry Roisnel ; Olivier Maury ; St茅phane Rigaut
• 刊名：Organometallics
• 出版年：2014
• 出版时间：September 22, 2014
• 年：2014
• 卷：33
• 期：18
• 页码：4824-4835
• 全文大小：696K
• ISSN：1520-6041

文摘

With the help of associations between Eu³⁺, Yb³⁺, and Nd³⁺ ions and low-potential redox-active ruthenium carbon-rich complexes bearing bipyridine chelating unit(s) of the type trans-[Ph鈥揅鈮鈥?dppe)₂Ru鈥揅鈮鈥揵ipy-魏²N,N鈥测€揕n(TTA)₃], trans-[(dppe)₂Ru(鈭扖鈮鈥揵ipy-魏²N,N鈥测€揕n(TTA)₃)₂], and trans-[Ph鈥揅鈮鈥?dppe)₂Ru鈥揅鈮鈥揅₆H₄鈥揅鈮鈥揵ipy-魏²N,N鈥测€揧b(TTA)₃], we built new original d鈥揻 heterometallic complexes. Efficient sensitization in the visible range of the Nd³⁺ and Yb³⁺ near-infrared (NIR) emitters was achieved with the metal鈥揳cetylide antenna, while sensitization of the Eu³⁺ ion was not efficient owing to the low energy level of the antenna excited state. The redox properties of these groups also allow for low-potential redox modulation of NIR luminescence of the Yb³⁺ ion and, for the first time, of the Nd³⁺ ion.