Tuning Long‐Lived Mn(II) Upconversion Luminescence through Alkaline‐Earth Metal Doping and Energy‐Level Tailoring

Liu, Xiaogang; Yi, Zhigao; Qin, Xian; Liu, Hong; Huang, Wei

doi:10.1002/adom.201900519

Cited by 27 publications

(10 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[ 34–40 ] RE elements are a group of 17 metal elements, including of 15 lanthanide elements (La–Lu) and 2 elements Sc and Y. [ 37,41–46 ] Briefly, RE ions have two ground‐state electron configurations including [Xe]4f n and [Xe]4f n −1 5d 1 . [ 41,47–49 ] The 4f electrons in 4f n configuration are localized core‐like and have a strong correlationship with n .…”

Section: Introductionmentioning

confidence: 99%

“…[34][35][36][37][38][39][40] RE elements are a group of 17 metal elements, including of 15 lanthanide elements (La-Lu) and 2 elements Sc and Y. [37,[41][42][43][44][45][46] Briefly, RE ions have two ground-state electron configurations including [Xe]4f n and [Xe]4f n−1 5d 1 . [41,[47][48][49] The 4f electrons in 4f n configuration are localized core-like and have a strong correlationship with n. [50][51][52][53][54][55] Localized 4f transitions including the f-d interconfigurational and f-f intraconfigurational transitions endow RE with atomic-like optical transitions, which can be observed as sharp and various absorption or luminescence bands.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Recent Advances in 2D Rare Earth Materials

Chen

Han

Zhao

et al. 2020

Adv Funct Materials

View full text Add to dashboard Cite

2D rare earth (RE) materials have received considerable attention in recent years due to the fascinating luminescence, magnetism, and electric properties originated from RE associated with sharp and various emission peaks, intrinsic 2D ferromagnetism, and incommensurate charge density wave. These materials might open up a new prospect in next‐generation lighting, magnetic devices, and phototransistors. Herein, a comprehensive review of 2D RE materials is presented, focusing on their recent progresses. First, the crystal structures of 2D RE materials are discussed. Then, typical synthesis methods such as mechanical exfoliation, molecular beam epitaxy, pulsed laser deposition, and chemical vapor deposition are introduced. Furthermore, various properties in luminescence, magnetism, and electronics are summarized. The recently reported RE‐based 2D novel photodetectors are outlined as three constructions: MoS2/RE, graphene/RE, and perovskite/RE, which show promising applications for both narrow and broad band detection arised from the special absorption windows of different RE elements. Finally, the conclusions and outlook of this area are proposed, such as exploring novel 2D RE compounds, improving stability, and broadening applications.

show abstract

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

Recent Advances in 2D Rare Earth Materials

Chen

Han

Zhao

et al. 2020

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

“…Mn 2+ is one of the promising candidates. The 4 T 1 → 6 A 1 emission of Mn 2+ can be tuned from green to red and even near-infrared by engineering of the coordination environment. − Importantly, Mn 2+ was proved to be efficient in tuning the population of excited states of Er 3+ , Tm 3+ , and Ho 3+ through round-trip energy extraction and donation, thereby leading to modulated upconversion emission selectivity . In Ln 3+ , Ce 3+ is typical to generate local structure-sensitive and wavelength-tunable 5d → 4f emissions from ultraviolet to visible, which is similar to d → d transitions.…”

Section: Discussionmentioning

confidence: 99%

Local Structure Engineering in Lanthanide-Doped Nanocrystals for Tunable Upconversion Emissions

2021

View full text Add to dashboard Cite

Upconversion emissions from lanthanide-doped nanocrystals have sparked extensive research interests in nanophotonics, biomedicine, photovoltaics, photocatalysis, etc. Rational modulation of upconversion emissions is highly desirable to meet the requirements of specific applications. Among the diverse developed methods, local structure engineering is fundamentally feasible, through which the upconversion emission intensity, selectivity, wavelength shift, and lifetime can be tuned effectively. The underlying mechanism of the local-structure-dependent upconversion emissions lies in the degree of parity hybridization and energy level splitting of lanthanide ions as well as the interionic energy transfer efficiency. Over the past few years, there has been significant progress in local-structure-engineered upconversion emissions. In this Perspective, we first introduce the principles of upconversion emissions and typical characterization methods for local structure. Subsequently, we summarize recent achievements in tuning of upconversion emissions through local structure engineering, including host composition adjustment, external field regulation, and interfacial strain management. Finally, we propose a few perspectives that should tackle the current bottlenecks. This Perspective is expected to deepen the understanding of local-structure-dependent upconversion emissions and arouse adequate attention to the engineering of local structure for desired properties of inorganic nanocrystals.

show abstract

“…The lifetime of Mn 2+ ions could be modulated by crystal-site engineering. Liu et al tuned the luminescence properties of Mn 2+ in core–multishell nanoparticles by doping Ca 2+ or Mg 2+ , changing the output color from green to yellow and prolonging its lifetime [ 49 ]. The spin-forbidden transition of Mn 2+ occurs between 4 T 1 → 6 A 1 , allowing a longer fluorescence lifetime than lanthanide emitters.…”

Section: Lifetime Regulationmentioning

confidence: 99%

Luminescent Lifetime Regulation of Lanthanide-Doped Nanoparticles for Biosensing

Wang

2022

Biosensors

View full text Add to dashboard Cite

Lanthanide-doped nanoparticles possess numerous advantages including tunable luminescence emission, narrow peak width and excellent optical and thermal stability, especially concerning the long lifetime from microseconds to milliseconds. Differing from other shorter-lifetime fluorescent nanomaterials, the long lifetime of lanthanide-doped nanomaterials is independent with background fluorescence interference and biological tissue depth. This review presents the recent advances in approaches to regulating the lifetime and applications of bioimaging and biodetection. We begin with the introduction of the strategies for regulating the lifetime by modulating the core–shell structure, adjusting the concentration of sensitizer and emitter, changing energy transfer channel, establishing a fluorescence resonance energy transfer pathway and changing temperature. We then summarize the applications of these nanoparticles in biosensing, including ion and molecule detecting, DNA and protease detection, cell labeling, organ imaging and thermal and pH sensing. Finally, the prospects and challenges of the lanthanide lifetime regulation for fundamental research and practical applications are also discussed.

show abstract

Tuning Long‐Lived Mn(II) Upconversion Luminescence through Alkaline‐Earth Metal Doping and Energy‐Level Tailoring

Cited by 27 publications

References 31 publications

Recent Advances in 2D Rare Earth Materials

Recent Advances in 2D Rare Earth Materials

Local Structure Engineering in Lanthanide-Doped Nanocrystals for Tunable Upconversion Emissions

Luminescent Lifetime Regulation of Lanthanide-Doped Nanoparticles for Biosensing

Contact Info

Product

Resources

About