N-（2-蒽基）取代环p2n2 -配体双核氯化金配合物的合成、结构和聚集致猝灭（ACQ）发光

IF 5.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications Pub Date : 2025-09-20 DOI:10.1016/j.inoche.2025.115543

Irina R. Dayanova , Alexey V. Kurenkov , Elizaveta M. Shibetskaya , Artemiy G. Shmelev , Bulat A. Faizullin , Aliya M. Saitova , Tatiana P. Gerasimova , Igor A. Litvinov , Elvira I. Musina , Igor D. Strelnik , Andrey A. Karasik , Oleg G. Sinyashin

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引用次数: 0

摘要

以吡啶-2-基、2-（吡啶-2 ' -基）乙基和2-（噻吩-2 ' -基）乙基膦、多聚甲醛和2-氨基蒽为原料合成了第一个含多芳蒽基取代基的环p2n2 -配体。p2n2 -配体与金(I)四氢噻吩氯反应形成了LAu2Cl2结构的金(I)配合物。综合结构表征，包括单晶x射线衍射，揭示了固体状态下蒽基片段之间的π -π堆叠。光物理研究表明DMSO溶液中的发射行为与浓度有关，多重发射态归因于π -π *， ILCT和基于准分子的跃迁。在高浓度和固体状态下，观察到聚集引起的猝灭（ACQ），而在10−5 M浓度下，配合物表现出强荧光，光致发光量子产率（PLQY）高达99%。TDDFT计算支持将低能带分配给叠加效应增强的ILCT跃迁。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Synthesis, structure, and aggregation-caused quenching (ACQ) of luminescence in dinuclear gold(I) chloride complexes with N-(2-anthracenyl)-substituted cyclic P2N2-ligands

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Synthesis, structure, and aggregation-caused quenching (ACQ) of luminescence in dinuclear gold(I) chloride complexes with N-(2-anthracenyl)-substituted cyclic P2N2-ligands

The first example of cyclic P₂N₂-ligands, containing polyaromatic anthracenyl substituents were synthesized using pyridine-2-yl-, 2-(pyridine-2′-yl)ethyl and 2-(thiophene-2′-yl)ethylphosphines, paraformaldehyde and 2-aminoanthracene. The reactions of the P₂N₂-ligands with gold(I) tetrahydrothiophene chloride resulted in the formation of the gold(I) complexes of LAu₂Cl₂ constitution. Comprehensive structural characterization, including single-crystal X-ray diffraction, revealed π–π stacking between anthracenyl fragments in the solid state. Photophysical studies showed concentration-dependent emission behavior in DMSO solutions, with multiple emissive states attributed to π–π*, ILCT, and excimer-based transitions. At high concentrations and in the solid state, aggregation-caused quenching (ACQ) was observed, while at 10⁻⁵ M concentration, complexes displayed strong fluorescence with a photoluminescence quantum yield (PLQY) up to 99 %. TDDFT calculations support the assignment of the low-energy bands to ILCT transitions enhanced by stacking effects.

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来源期刊

Inorganic Chemistry Communications 化学-无机化学与核化学

CiteScore

5.50

自引率

7.90%

发文量

1013

审稿时长

53 days

期刊介绍： Launched in January 1998, Inorganic Chemistry Communications is an international journal dedicated to the rapid publication of short communications in the major areas of inorganic, organometallic and supramolecular chemistry. Topics include synthetic and reaction chemistry, kinetics and mechanisms of reactions, bioinorganic chemistry, photochemistry and the use of metal and organometallic compounds in stoichiometric and catalytic synthesis or organic compounds.