Ze-Yu Liu, Qing-Bin Nie, Bao-Liang Han, Rakesh Kumar Gupta, Guang-Lei Dong, Geng-Geng Luo, Zhi-Lin Yang and Di Sun
{"title":"用于近红外发射的原子精密铸造金属纳米团簇:激发态动力学和机制。","authors":"Ze-Yu Liu, Qing-Bin Nie, Bao-Liang Han, Rakesh Kumar Gupta, Guang-Lei Dong, Geng-Geng Luo, Zhi-Lin Yang and Di Sun","doi":"10.1039/D5CS00383K","DOIUrl":null,"url":null,"abstract":"<p >Understanding the excited-state dynamics of atomically precise coinage metal nanoclusters (CMNCs) is pivotal for elucidating their photoluminescence (PL) mechanisms and rationally tuning emission properties—particularly in the near-infrared (NIR) region, where CMNC-based nanomaterials have tremendous potential for biomedical and optoelectronic applications. This review presents a systematic and comprehensive account of recent advances in investigating the excited-state dynamics and PL mechanisms of NIR-emitting CMNCs with atomic precision, leveraging the synergistic integration of time-resolved spectroscopy and time-dependent density functional theory (TD-DFT) calculations. Distinct from previous reviews that offer a broad survey of CMNC properties, the present review focuses specifically on intrinsic factors, highlighting molecular vibrational features and electronic structure modulation as key determinants of NIR emission. We begin by outlining how time-resolved spectroscopic techniques—including femtosecond and nanosecond transient absorption (fs-/ns-TA) and time-resolved fluorescence spectroscopy (TRFS)—coupled with TD-DFT modeling, facilitate the probing of relaxation dynamics, photophysical behaviors, and the underlying electronic structures of CMNCs. We then highlight how these advanced techniques reveal the role of coherent oscillations and excited-state relaxation in dictating PL efficiency and characteristics, while delving into strategies such as ligand rigidification, metal doping, kernel engineering, and induced structural transformations that suppress non-radiative decay pathways and thereby enhance NIR PL quantum yield (PLQY) in the NIR region. Finally, we conclude by discussing the current challenges and future opportunities in deepening our understanding of optical properties and excited-state dynamics of NIR-emitting CMNCs, underscoring the imperative for advanced experimental methodologies and rational design strategies to optimize their functionalities for emerging applications.</p>","PeriodicalId":68,"journal":{"name":"Chemical Society Reviews","volume":" 19","pages":" 9092-9115"},"PeriodicalIF":39.0000,"publicationDate":"2025-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Atom-precise coinage metal nanoclusters for near-infrared emission: excited-state dynamics and mechanisms\",\"authors\":\"Ze-Yu Liu, Qing-Bin Nie, Bao-Liang Han, Rakesh Kumar Gupta, Guang-Lei Dong, Geng-Geng Luo, Zhi-Lin Yang and Di Sun\",\"doi\":\"10.1039/D5CS00383K\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Understanding the excited-state dynamics of atomically precise coinage metal nanoclusters (CMNCs) is pivotal for elucidating their photoluminescence (PL) mechanisms and rationally tuning emission properties—particularly in the near-infrared (NIR) region, where CMNC-based nanomaterials have tremendous potential for biomedical and optoelectronic applications. This review presents a systematic and comprehensive account of recent advances in investigating the excited-state dynamics and PL mechanisms of NIR-emitting CMNCs with atomic precision, leveraging the synergistic integration of time-resolved spectroscopy and time-dependent density functional theory (TD-DFT) calculations. Distinct from previous reviews that offer a broad survey of CMNC properties, the present review focuses specifically on intrinsic factors, highlighting molecular vibrational features and electronic structure modulation as key determinants of NIR emission. We begin by outlining how time-resolved spectroscopic techniques—including femtosecond and nanosecond transient absorption (fs-/ns-TA) and time-resolved fluorescence spectroscopy (TRFS)—coupled with TD-DFT modeling, facilitate the probing of relaxation dynamics, photophysical behaviors, and the underlying electronic structures of CMNCs. We then highlight how these advanced techniques reveal the role of coherent oscillations and excited-state relaxation in dictating PL efficiency and characteristics, while delving into strategies such as ligand rigidification, metal doping, kernel engineering, and induced structural transformations that suppress non-radiative decay pathways and thereby enhance NIR PL quantum yield (PLQY) in the NIR region. Finally, we conclude by discussing the current challenges and future opportunities in deepening our understanding of optical properties and excited-state dynamics of NIR-emitting CMNCs, underscoring the imperative for advanced experimental methodologies and rational design strategies to optimize their functionalities for emerging applications.</p>\",\"PeriodicalId\":68,\"journal\":{\"name\":\"Chemical Society Reviews\",\"volume\":\" 19\",\"pages\":\" 9092-9115\"},\"PeriodicalIF\":39.0000,\"publicationDate\":\"2025-09-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chemical Society Reviews\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2025/cs/d5cs00383k\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemical Society Reviews","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2025/cs/d5cs00383k","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Atom-precise coinage metal nanoclusters for near-infrared emission: excited-state dynamics and mechanisms
Understanding the excited-state dynamics of atomically precise coinage metal nanoclusters (CMNCs) is pivotal for elucidating their photoluminescence (PL) mechanisms and rationally tuning emission properties—particularly in the near-infrared (NIR) region, where CMNC-based nanomaterials have tremendous potential for biomedical and optoelectronic applications. This review presents a systematic and comprehensive account of recent advances in investigating the excited-state dynamics and PL mechanisms of NIR-emitting CMNCs with atomic precision, leveraging the synergistic integration of time-resolved spectroscopy and time-dependent density functional theory (TD-DFT) calculations. Distinct from previous reviews that offer a broad survey of CMNC properties, the present review focuses specifically on intrinsic factors, highlighting molecular vibrational features and electronic structure modulation as key determinants of NIR emission. We begin by outlining how time-resolved spectroscopic techniques—including femtosecond and nanosecond transient absorption (fs-/ns-TA) and time-resolved fluorescence spectroscopy (TRFS)—coupled with TD-DFT modeling, facilitate the probing of relaxation dynamics, photophysical behaviors, and the underlying electronic structures of CMNCs. We then highlight how these advanced techniques reveal the role of coherent oscillations and excited-state relaxation in dictating PL efficiency and characteristics, while delving into strategies such as ligand rigidification, metal doping, kernel engineering, and induced structural transformations that suppress non-radiative decay pathways and thereby enhance NIR PL quantum yield (PLQY) in the NIR region. Finally, we conclude by discussing the current challenges and future opportunities in deepening our understanding of optical properties and excited-state dynamics of NIR-emitting CMNCs, underscoring the imperative for advanced experimental methodologies and rational design strategies to optimize their functionalities for emerging applications.
期刊介绍:
Chemical Society Reviews is published by: Royal Society of Chemistry.
Focus: Review articles on topics of current interest in chemistry;
Predecessors: Quarterly Reviews, Chemical Society (1947–1971);
Current title: Since 1971;
Impact factor: 60.615 (2021);
Themed issues: Occasional themed issues on new and emerging areas of research in the chemical sciences