Mononuclear Yb(Ⅲ) Complexes Coordinated by Polycyclic Aromatic Carboxylates for Electroluminescence and Anti-counterfeiting Applications

IF 3.8 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2026-10-12 DOI:10.1016/j.jlumin.2026.122233

Xinyi Li, Yibo Qin, Ruqi Hao, Guozhu Ren, Tongtong Zhang, Lingdong Wang, Zhongzhi Wang, Liang Zhou

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Abstract

The luminescent performance of ytterbium complexes is comparatively unsatisfactory due to the quenching effect of high energy N-H/O-H bonds, which exist in solvent molecules. To suppress this quenching, three ligands were designed that could prevent solvent molecules from directly coordinating to Yb³⁺. These ligands were synthesized through simple and low-cost procedures. X-ray single-crystal diffraction data confirmed there is no direct coordination interaction between solvent molecules and Yb³⁺, achieving the predetermined structural design purpose. Among these complexes, [Yb(DCP)₂](DIEA) exhibited quantum yield (QY) of 1.34% and a luminescent lifetime of 95 μs in CD₃OD. The thermodynamic feasibility of ligand-sensitized luminescence of central ion through internal redox process was demonstrated. Additionally, preliminary investigations verified its application potential in solution-processed OLED with the maximum irradiance up to 237,926 μW/m² and its utility in anti-counterfeiting applications.

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电致发光和防伪应用的单核Yb（Ⅲ）多环芳烃羧酸配合物

由于溶剂分子中存在高能N-H/O-H键的猝灭作用，镱配合物的发光性能相对不理想。为了抑制这种猝灭，设计了三种可以阻止溶剂分子直接配位到Yb3+的配体。这些配体是通过简单和低成本的方法合成的。x射线单晶衍射数据证实溶剂分子与Yb3+之间没有直接的配位相互作用，达到了预定的结构设计目的。其中，[Yb(DCP)2]（DIEA）在CD3OD中的量子产率（QY）为1.34%，发光寿命为95 μs。证明了中心离子通过内氧化还原过程进行配体敏化发光的热力学可行性。此外，初步研究验证了其在溶液处理OLED中的应用潜力，最大辐照度可达237,926 μW/m2，并在防伪方面具有实用价值。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Luminescence 物理-光学

CiteScore

6.70

自引率

13.90%

发文量

850

审稿时长

3.8 months

期刊介绍： The purpose of the Journal of Luminescence is to provide a means of communication between scientists in different disciplines who share a common interest in the electronic excited states of molecular, ionic and covalent systems, whether crystalline, amorphous, or liquid. We invite original papers and reviews on such subjects as: exciton and polariton dynamics, dynamics of localized excited states, energy and charge transport in ordered and disordered systems, radiative and non-radiative recombination, relaxation processes, vibronic interactions in electronic excited states, photochemistry in condensed systems, excited state resonance, double resonance, spin dynamics, selective excitation spectroscopy, hole burning, coherent processes in excited states, (e.g. coherent optical transients, photon echoes, transient gratings), multiphoton processes, optical bistability, photochromism, and new techniques for the study of excited states. This list is not intended to be exhaustive. Papers in the traditional areas of optical spectroscopy (absorption, MCD, luminescence, Raman scattering) are welcome. Papers on applications (phosphors, scintillators, electro- and cathodo-luminescence, radiography, bioimaging, solar energy, energy conversion, etc.) are also welcome if they present results of scientific, rather than only technological interest. However, papers containing purely theoretical results, not related to phenomena in the excited states, as well as papers using luminescence spectroscopy to perform routine analytical chemistry or biochemistry procedures, are outside the scope of the journal. Some exceptions will be possible at the discretion of the editors.