Photophysical investigation of near infrared emitting lanthanoid complexes incorporating tris(2-naphthoyl)methane as a new antenna ligand.
Photophysical investigation of near infrared emitting lanthanoid complexes incorporating tris(2-naphthoyl)methane as a new antenna ligand.
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DOI：
10.1039/c8dt04749a
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发表时间：
2019-01
影响因子：
4
通讯作者：
Laura Abad Galán;S. Wada;L. Cameron;A. Sobolev;Y. Hasegawa;E. Zysman‐Colman;M. Ogden;Massimiliano Massi
中科院分区：
文献类型：
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作者：
Laura Abad Galán;S. Wada;L. Cameron;A. Sobolev;Y. Hasegawa;E. Zysman‐Colman;M. Ogden;Massimiliano Massi
合成了一种共轭β-三酮-三（2-萘甲酰基）甲烷（tnmH），并成功地将其用作敏化三价稀土离子Eu ~（3+）、Sm ~（3+）、Yb ~（3+）和Nd ~（3+）的天线部分，形成了一个类质同晶的单核配合物[Ln（tnm）_3（DMSO）_2]（Ln ~（3+）= Nd ~（3+）、Sm ~（3+）、Eu ~（3+）、Gd ~（3+）和Yb ~（3+））。材料的物理性质的特点是尽可能全面，与整体量子产率，固有的量子产率的基础上计算的辐射衰减，和敏化效率的报告。这项研究提高了对近红外（NIR）区域中发生的敏化过程的理解，目前定量数据很少。事实上，[Yb（tnm）3（DMSO）2]及其氘代类似物[Yb（tnm）3（d 6-DMSO）2]分别具有4%和6%的高总量子产率值，这使得它们对于未来的NIR发射系统的研究是有用的和容易获得的参考。
A conjugated β-triketone, tris(2-naphthoyl)methane (tnmH), has been synthesized and successfully utilized as an antenna moiety for sensitization of the trivalent lanthanoids Eu3+, Sm3+, Yb3+ and Nd3+, in an isomorphous series of mononuclear complexes formulated as [Ln(tnm)3(DMSO)2] (Ln3+ = Nd3+, Sm3+, Eu3+, Gd3+ and Yb3+). The photophysical properties of the materials were characterized as comprehensively as possible, with overall quantum yields, intrinsic quantum yields based on calculated radiative decays, and sensitization efficiencies reported. This investigation improves understanding of the sensitization processes occurring in the near-infrared (NIR) region, where quantitative data are currently scarce. In fact, the [Yb(tnm)3(DMSO)2] and its deuterated analogue, [Yb(tnm)3(d6-DMSO)2], present high values of overall quantum yield of 4% and 6%, respectively, which makes them useful and readily accessible references for future investigation of NIR-emitting systems.