芘酸钇钆：粉末态下具有记录量子产率的形态依赖的nir发射。

IF 4.7 2区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Pub Date : 2025-09-30 DOI:10.1021/acs.inorgchem.5c02305

Anastasia V Orlova,Vladislava Kozhevnikova,Alexander S Goloveshkin,Anastasia Bolshakova,Valentina V Utochnikova

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引用次数: 0

摘要

在本研究中，我们报道了镧系芘酸酯的合成特性，揭示了一个前所未有的脱水过程：Yb(pyr)3(H2O)5→Yb(pyr)3(H2O)1.5→Yb(pyr)3。Ln(pyr)3在Ln = Ce-Yb的一排中呈同晶结构，对于高结晶的Ho(pyr)3，通过Rietveld细化得到晶体结构。研究了芘酸镱沸腾时的形态演变，并证明了其形态与光度有关。我们提出了解释这种依赖的机制，并通过时间分辨光致发光研究证实了这一机制。由于形态优化，量子产率提高了4倍，并且获得了迄今为止最高的固体镱配合物的量子产率（Yb0.6Gd0.4(pyr)3）为6.1%)。

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Ytterbium-Gadolinium Pyrenates: Morphology-Dependent NIR-Emission with Record Quantum Yield in Powder State.

In this study, we report the synthesis peculiarities of lanthanide pyrenates, which reveal an unprecedented dehydration process in water: Yb(pyr)3(H2O)5 → Yb(pyr)3(H2O)1.5 → Yb(pyr)3. Ln(pyr)3 are isostructural in the row of Ln = Ce-Yb, and for highly crystalline Ho(pyr)3, the crystal structure was obtained by Rietveld refinement. The morphology evolution upon boiling was studied for ytterbium pyrenates, and the morphology was demonstrated to correlate with luminosity. We proposed the mechanism explaining this dependence and confirmed it through time-resolved photoluminescence studies. As a result of the morphology optimization, the quantum yield increased four times, and the highest to date quantum yield of a solid ytterbium complex was obtained (6.1% in Yb0.6Gd0.4(pyr)3).

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来源期刊

Inorganic Chemistry 化学-无机化学与核化学

CiteScore

7.60

自引率

13.00%

发文量

1960

审稿时长

1.9 months

期刊介绍： Inorganic Chemistry publishes fundamental studies in all phases of inorganic chemistry. Coverage includes experimental and theoretical reports on quantitative studies of structure and thermodynamics, kinetics, mechanisms of inorganic reactions, bioinorganic chemistry, and relevant aspects of organometallic chemistry, solid-state phenomena, and chemical bonding theory. Emphasis is placed on the synthesis, structure, thermodynamics, reactivity, spectroscopy, and bonding properties of significant new and known compounds.