First report of aggregation induced emission (AIE) in NIR-II region of a Pr(III) polymer chain with pyridine-2,6-dicarboxylic acid

IF 3.3 3区物理与天体物理 Q2 OPTICS

Journal of Luminescence Pub Date : 2025-05-03 DOI:10.1016/j.jlumin.2025.121284

Kanishka Raghuvanshi , Abhineet Verma , Sailaja S. Sunkari

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引用次数: 0

Abstract

The captivating allure of lanthanide complexes, known for their NIR emissions, becomes even more mesmerizing when aggregation occurs, enhancing their luminescent properties. This novel property significantly boosts its potential for applications in theranostics, offering new opportunities for advancements. Complexation of Praseodymium (III) with pyridine-2,6-dicarboxylic acid (dipicH₂) led to the formation of transparent green crystals of the 1-D polymer chain of [Pr(dipicH)(dipic)(OH₂)₂]·4H₂O (DPr), which demonstrates this unique aggregation-induced emission in the NIR region. DipicH₂ being a versatile ligand offering diverse bridging modes in connecting metal centers, numerous complexes of lanthanides exist, displaying aggregation effects in the visible spectrum. Inspite of vast number of complexes, to the best of our knowledge, this is the first report of AIE behavior in lanthanide complexes in the NIR-II region, showcasing the potential applications that may emerge for lanthanide-based materials.

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吡啶-2,6-二羧酸在Pr（III）聚合物链NIR-II区聚集诱导发射（AIE）的首次报道

镧系化合物以其近红外辐射而闻名，其迷人的吸引力在聚集发生时变得更加迷人，增强了它们的发光特性。这种新特性极大地提高了其在治疗学中的应用潜力，为其发展提供了新的机会。镨（III）与吡啶-2,6-二羧酸（dipicH2）络合形成了透明的1-D聚合物链[Pr(dipicH)(dipic)(OH2)2]·4H2O （DPr）的绿色晶体，在近红外区显示了这种独特的聚集诱导发射。DipicH2是一种多用途的配体，在连接金属中心时提供不同的桥接模式，因此存在许多镧系元素配合物，在可见光谱中表现出聚集效应。尽管有大量的配合物，据我们所知，这是NIR-II区域镧系配合物中AIE行为的第一份报告，展示了镧系材料可能出现的潜在应用。

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.