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首页> 外文会议>Rare Earth Research Conference >Luminescent Properties of Lanthanide-Based Metal-Organic Frameworks with Rigid Tritopic Carboxylate Ligands
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Luminescent Properties of Lanthanide-Based Metal-Organic Frameworks with Rigid Tritopic Carboxylate Ligands

机译：镧系元素 - 有机骨架的发光性能刚性氚型羧酸盐配体

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摘要

Lanthanide-based metal-organic frameworks (Ln-MOFs), constructed from Ln~(3+) ions and organic ligands, have attracted a great attention not only for their impressive structural diversity, but also for their potential application in the field of luminescence.1 Most Ln~(3+) ions have excellent luminescent properties such as high color purity and relatively long luminescence lifetimes. Unfortunately, it is well-known that a direct excitation of Ln~(3+) ions is compromised because of their low absorption coefficients. However, the excitation process can be enhanced by introducing organic ligands into the local environment of Ln~(3+) ions. The effective excitation is then realized by so-called antenna effect. This phenomenon relies on the fact that the incident excitation is first absorbed by organic ligands. Then the energy is transferred to the Ln~(3+) ions, which become excited and subsequently emit a characteristic radiation. In this context, luminescent properties of Ln-MOFs with 4,4',4"-(benzene-l,3,5-triyl)tribenzoate (LI) and 4,4',4"-(pyridine-2,4,6-triyl)tribenzoate (L2) ligands will be presented.
机译：由LN〜（3+）离子和有机配体构成的镧系元素 - 有机框架（LN-MOF）不仅引起了令人印象深刻的结构多样性，而且还吸引了非常重视，也吸引了它们在发光领域中的潜在应用.1大多数Ln〜（3+）离子具有优异的发光性能，例如高色纯度和相对长的发光寿命。不幸的是，众所周知，由于其低吸收系数，LN〜（3+）离子的直接激发被损害。然而，通过将有机配体引入LN〜（3+）离子的局部环境中，可以提高激发过程。然后通过所谓的天线效应实现有效激励。这种现象依赖于引发激发首先被有机配体吸收的事实。然后将能量转移到LN〜（3+）离子，其变得激发并随后发出特征辐射。在这种情况下，LN-MOF的发光性能为4,4'，4“ - （苯-1,3,5-三酯）呋喃甲酸盐（Li）和4,4'，4” - （吡啶-2,4，将提出6-三酯呋喃甲酸（L2）配体。

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