First lanthanide dipolar complexes for second-order nonlinear optics
作者:Katell Sénéchal、Loïc Toupet、Isabelle Ledoux、Joseph Zyss、Hubert Le Bozec、Olivier Maury
DOI:10.1039/b407073a
日期:——
New push–pull NLO-phores based on lanthanide complexes (Ln = La, Gd, Dy, Yb) featuring an annelated dibutylaminophenyl functionalised terpyridyl ligand have been synthesised and shown to exhibit large first-order hyperpolarizability.
Synthesis, Structural Studies, Theoretical Calculations, and Linear and Nonlinear Optical Properties of Terpyridyl Lanthanide Complexes: New Evidence for the Contribution of f Electrons to the NLO Activity
作者:Katell Sénéchal-David、Anne Hemeryck、Nicolas Tancrez、Loïc Toupet、J. A. Gareth Williams、Isabelle Ledoux、Joseph Zyss、Abdou Boucekkine、Jean-Paul Guégan、Hubert Le Bozec、Olivier Maury
DOI:10.1021/ja063586j
日期:2006.9.1
spectroscopy. The absorption, emission, and solvatochromic properties of the free terpyridyl-like ligand L were thoroughly investigated, and the twist intramolecular charge transfer (TICT) character of the lowest energy transition was confirmed by theoretical calculation (TDDFT and CIS). The similar ionochromic effect of the different lanthanideions was evidenced by the similar UV-visible spectra of the
新型镧系三联吡啶类复合物家族 LLn(NO(3))(3)(Ln = La、Gd、Dy、Yb 和 Y)的合成和结构、光物理和二阶非线性光学 (NLO) 特性被报道。在钇和钆配合物的 X 射线衍射分析、几何理论优化 (DFT) 和 NMR 光谱的基础上,已确定该系列在溶液和固态中的同构特征。彻底研究了游离三联吡啶类配体 L 的吸收、发射和溶剂致变色性质,并通过理论计算(TDDFT 和 CIS)证实了最低能量跃迁的扭曲分子内电荷转移(TICT)特性。不同镧系元素离子的类似电离致变色效应由整个配合物家族的类似紫外-可见光谱证明。另一方面,通过谐波光散射 (HLS) 技术测量的二次超极化系数 beta 显然取决于金属的性质,对钇的特殊情况的仔细检查明确地证实了金属 f 电子的贡献到 NLO 活动。