Dual-Antenna Trimetallic Lanthanide Complexes for Enhanced Near-Infrared Luminescence.

IF 3.3 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Chemistry - An Asian Journal Pub Date : 2025-06-17 DOI:10.1002/asia.202500017

Krishanu Bandyopadhyay, Abhineet Verma, Satyen Saha

{"title":"Dual-Antenna Trimetallic Lanthanide Complexes for Enhanced Near-Infrared Luminescence.","authors":"Krishanu Bandyopadhyay, Abhineet Verma, Satyen Saha","doi":"10.1002/asia.202500017","DOIUrl":null,"url":null,"abstract":"<p><p>Lanthanide [Ln(III)] ions are known for their unique near-infrared (NIR) luminescence, typically achieved through indirect excitation via the antenna effect. Organic ligands, such as N,N-bis(3-methoxysalicylidene)-1,4-diamino butane (L), in combination with Zn, have previously demonstrated their effectiveness in enhancing lanthanide NIR emission, as seen in bimetallic [L-Zn-Ln] complexes, which employs a single antenna. In this study, we present a new series of trimetallic Zn-Ln complexes, [(L-Zn)₂-Ln], featuring two compartmental ligand-Zn complexes, acting as antennas, aimed at further improving energy transfer efficiency to the lanthanide centers. Comprehensive characterization using SCXRD, PXRD, FT-IR, and CHN analyses confirmed the structural integrity of these complexes. Notably, SCXRD and XPS revealed significant structural differences between the bimetallic and trimetallic systems. The impact of the additional antenna, replacing nitrate and methanol-known contributors to nonradiative relaxation in the bimetallic [L-Zn-Ln] complexes-was thoroughly examined. Photophysical studies across both visible and NIR regions demonstrated substantial enhancements in luminescence, particularly in the NIR region, attributed to the inclusion of the second antenna, highlighting its role in improving the overall energy transfer process.</p>","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00017"},"PeriodicalIF":3.3000,"publicationDate":"2025-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemistry - An Asian Journal","FirstCategoryId":"1","ListUrlMain":"https://doi.org/10.1002/asia.202500017","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Lanthanide [Ln(III)] ions are known for their unique near-infrared (NIR) luminescence, typically achieved through indirect excitation via the antenna effect. Organic ligands, such as N,N-bis(3-methoxysalicylidene)-1,4-diamino butane (L), in combination with Zn, have previously demonstrated their effectiveness in enhancing lanthanide NIR emission, as seen in bimetallic [L-Zn-Ln] complexes, which employs a single antenna. In this study, we present a new series of trimetallic Zn-Ln complexes, [(L-Zn)₂-Ln], featuring two compartmental ligand-Zn complexes, acting as antennas, aimed at further improving energy transfer efficiency to the lanthanide centers. Comprehensive characterization using SCXRD, PXRD, FT-IR, and CHN analyses confirmed the structural integrity of these complexes. Notably, SCXRD and XPS revealed significant structural differences between the bimetallic and trimetallic systems. The impact of the additional antenna, replacing nitrate and methanol-known contributors to nonradiative relaxation in the bimetallic [L-Zn-Ln] complexes-was thoroughly examined. Photophysical studies across both visible and NIR regions demonstrated substantial enhancements in luminescence, particularly in the NIR region, attributed to the inclusion of the second antenna, highlighting its role in improving the overall energy transfer process.

查看原文本刊更多论文

增强近红外发光的双天线三金属镧系配合物。

镧系[Ln(III)]离子以其独特的近红外（NIR）发光而闻名，通常是通过天线效应间接激发实现的。有机配体，如N，N-二（3-甲氧基水杨酸基）-1,4-二氨基丁烷(L)，与Zn结合，先前已经证明了它们在增强镧系元素近红外发射方面的有效性，如在双金属[L-Zn- ln]配合物中所见，该配合物采用单天线。在这项研究中，我们提出了一系列新的三金属Zn-Ln配合物，[(L-Zn) 2 -Ln]，具有两个区隔配体- zn配合物作为天线，旨在进一步提高向镧系元素中心的能量传递效率。利用SCXRD、PXRD、FT-IR和CHN分析等综合表征证实了这些配合物的结构完整性。值得注意的是，SCXRD和XPS显示了双金属和三金属体系之间的显著结构差异。额外的天线的影响，取代硝酸盐和甲醇-已知的贡献者在双金属[L-Zn-Ln]络合物的非辐射松弛-被彻底检查。在可见光和近红外区域的光物理研究表明，由于第二天线的加入，发光，特别是近红外区域的发光，显著增强，突出了其在改善整体能量传递过程中的作用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Chemistry - An Asian Journal 化学-化学综合

CiteScore

7.00

自引率

2.40%

发文量

535

审稿时长

1.3 months

期刊介绍： Chemistry—An Asian Journal is an international high-impact journal for chemistry in its broadest sense. The journal covers all aspects of chemistry from biochemistry through organic and inorganic chemistry to physical chemistry, including interdisciplinary topics. Chemistry—An Asian Journal publishes Full Papers, Communications, and Focus Reviews. A professional editorial team headed by Dr. Theresa Kueckmann and an Editorial Board (headed by Professor Susumu Kitagawa) ensure the highest quality of the peer-review process, the contents and the production of the journal. Chemistry—An Asian Journal is published on behalf of the Asian Chemical Editorial Society (ACES), an association of numerous Asian chemical societies, and supported by the Gesellschaft Deutscher Chemiker (GDCh, German Chemical Society), ChemPubSoc Europe, and the Federation of Asian Chemical Societies (FACS).