Brilliant Sm, Eu, Tb, and Dy chiral lanthanide complexes with strong circularly polarized luminescence
Brilliant Sm, Eu, Tb, and Dy chiral lanthanide complexes with strong circularly polarized luminescence
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DOI：
10.1021/ja064902x
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发表时间：
2007-01-10
影响因子：
15
通讯作者：
Raymond, Kenneth N.
中科院分区：
文献类型：
--
作者：
Petoud, Stephane;Muller, Gilles;Raymond, Kenneth N.
报道了两个对映体、八齿手性2-羟基乙酰胺配体的三价钐、铕、镝和铽配合物的合成、表征和发光行为。这些配合物在溶液中是高度发光的。功能化的非手性母体配体与手性1-苯乙胺取代基上的配合物的开放面在接近的金属中心产生的配合物具有很强的圆偏振发光（CPL）的活动。这似乎是利用相同的配体结构敏化四种不同的镧系阳离子并显示CPL活性的系统的第一个实例。的发光不对称因子，g（流明），记录的Eu（III）配合物是最高的值之一，这是第一次的CPL效应已被证明为Sm（III）配合物与手性配体。高发光强度与CPL活性的组合应使手性环境中的大分子的新的生物分析应用。
The synthesis, characterization, and luminescent behavior of trivalent Sm, Eu, Dy, and Tb complexes of two enantiomeric, octadentate, chiral, 2-hydroxyisophthalamide ligands are reported. These complexes are highly luminescent in solution. Functionalization of the achiral parent ligand with a chiral 1-phenylethylamine substituent on the open face of the complex in close proximity to the metal center yields complexes with strong circularly polarized luminescence (CPL) activity. This appears to be the first example of a system utilizing the same ligand architecture to sensitize four different lanthanide cations and display CPL activity. The luminescence dissymmetry factor, g(lum), recorded for the Eu(III) complex is one of the highest values reported, and this is the first time the CPL effect has been demonstrated for a Sm(III) complex with a chiral ligand. The combination of high luminescence intensity with CPL activity should enable new bioanalytical applications of macromolecules in chiral environments.