Efficient and Stable Multicolor Emissions of the Coumarin‐Modified Cs3LnCl6 Lead‐Free Perovskite Nanocrystals and LED Application DOI

Liheng Sun,

Biao Dong, Jiao Sun

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(18)

Published: Jan. 30, 2024

Abstract Lanthanide‐based lead‐free perovskite materials hold great promise for the development of high‐resolution full‐color displays in future. Here, various Cs 3 LnCl 6 nanocrystals (NCs) emitting light across visible to near‐infrared spectrum with remarkably high photoluminescence quantum yield (PLQY) are systemically prepared. Especially, by introducing multifunctional coumarin small molecules into EuCl NCs as an intermediate state, can achieve impressive PLQY 92.4% pure red emission and exceptional energy transfer efficiency nearly 93.2%. Furthermore, lanthanide‐based electroluminescent devices red, green, blue successfully fabricated. Among them, ‐NC‐based light‐emitting diode (LED) demonstrates a FWHM 18 nm at 617 nm, external up 5.17%, maximum brightness 2373 cd m −2 , which is most excellent reported narrowband (within 20 nm) devices. Notably, these exhibit operating half‐life 440 h level 100 surpassing performance LEDs (PLEDs). This work opens exciting possibilities future commercialization PLEDs display industry, paving way more vibrant, energy‐efficient, long‐lasting technologies.

Language: Английский

Switching between C2+ Products and CH4 in CO2 Electrolysis by Tuning the Composition and Structure of Rare-Earth/Copper Catalysts DOI
Jiyuan Liu, Pengsong Li,

Jiahui Bi

et al.

Journal of the American Chemical Society, Journal Year: 2023, Volume and Issue: 145(42), P. 23037 - 23047

Published: Oct. 11, 2023

Rational regulation of the reaction pathway to produce desired products is one most significant challenges in electrochemical CO2 reduction (CO2RR). Herein, we designed a series rare-earth Cu catalysts with mixed phases. It was found that could be switched from C2+ CH4 by tuning composition and structure catalysts. Particularly at Cu/Sm atomic ratio 9/1 (Cu9Sm1-Ox), Faradaic efficiency (FE) for (FEC2+) reach 81% 700 mA cm-2 negligible CH4. However, FE (FECH4) 65% 500 over Cu1Sm9-Ox (Cu/Sm = 1/9), FEC2+ extremely low. Experiments theoretical studies indicated stable CuSm2O4 phase existed all within range 1/9. At high content, catalyst composed The small amount Sm enhance binding strength *CO facilitate C-C coupling. Conversely, Sm2O3 effectively stabilize bivalent enrich proton donors, lowering energy deep hydrogenation generate In both pathways, cooperate or phases, which induced formation different microenvironments products. This strategy also had commonality other Cu-rare-earth (La, Pr, Eu) boost CO2RR production.

Language: Английский

Citations

61
A Near‐Infrared Light‐Activated Photocage Based on a Ruthenium Complex for Cancer Phototherapy DOI
Guangli He, Maomao He, Ran Wang

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(24)

Published: March 9, 2023

Conventional photocages only respond to short wavelength light, which is a significant obstacle developing efficient phototherapy in vivo. The development of activated by near-infrared (NIR) light at wavelengths from 700 950 nm important for vivo studies but remains challenging. Herein, we describe the synthesis photocage based on ruthenium (Ru) complex with NIR light-triggered photocleavage reaction. commercial anticancer drug, tetrahydrocurcumin (THC), was coordinated RuII center create Ru-based that readily responsive 760 nm. inherited properties THC. As proof-of-concept, further engineered self-assembled photocage-based nanoparticle system amphiphilic block copolymers. Upon exposure nm, Ru complex-based were released polymeric nanoparticles and efficiently inhibited tumor proliferation

Language: Английский

Citations

57
The Electron Migration Polarization Boosting Electromagnetic Wave Absorption Based on Ce Atoms Modulated yolk@shell FexN@NGC DOI

Zhenhui Ma,

Ke Yang,

Da Li

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(23)

Published: Feb. 21, 2024

The electron migration polarization is considered as a promising approach to optimize electromagnetic waves (EMW) dissipation. However, it still difficult realize well-controlled and elucidate the related EMW loss mechanisms for current researches. Herein, novel Fe

Language: Английский

Citations

54
Local Electronic Structure Modulation of Interfacial Oxygen Vacancies Promotes the Oxygen Activation Capacity of Pt/Ce1–xMxO2−δ DOI

Weiping Yang,

Fuyuan Qi,

Wenjing An

et al.

ACS Catalysis, Journal Year: 2024, Volume and Issue: 14(8), P. 5936 - 5948

Published: April 3, 2024

The asymmetric oxygen vacancies on the surface of doped oxides and at interface between metal oxide are commonly regarded as real active sites for molecular activation reaction, owing to their unique electronic perturbation properties. However, essential rules modulating local structure promote capacity still ambiguous. In this work, a series interfacial vacancy sites, Pt/Ce–Ov–M (Ov, vacancy, M = Y, La, Pr, Nd), with different coordination environments were constructed based Pt/Ce0.95M0.05O2−δ materials. experimental data theoretical calculation results prove that site can capture electrons from Pt d-bands d- f-bands, acting an electron enrichment center. elevated d-band center upward Fermi level significantly boost transfer unoccupied π2p* orbital O2, achieving O2 through π-electron feedback mechanism. Remarkably, Pt/Ce–Ov–Y in Pt/Ce0.95Y0.05O2−δ highest delocalized density exhibited best behaviors catalytic activity aerobic oxidation 5-hydroxymethylfurfural. This work reveals over metal-oxide catalysts is highly dependent d/f-orbital valence-electron modulation, providing more insights into effect vacancy-localized performance.

Language: Английский

Citations

51
Near‐Infrared Luminescent Materials Incorporating Rare Earth/Transition Metal Ions: From Materials to Applications DOI

Hua‐Hui Li,

Ya‐Kun Wang, Liang‐Sheng Liao

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(30)

Published: May 11, 2024

Abstract The spotlight has shifted to near‐infrared (NIR) luminescent materials emitting beyond 1000 nm, with growing interest due their unique characteristics. ability of NIR‐II emission (1000–1700 nm) penetrate deeply and transmit independently positions these NIR for applications in optical‐communication devices, bioimaging, photodetectors. combination rare earth metals/transition metals a variety matrix provides new platform creating chemical physical properties science device applications. In this review, the recent advancements activated by transition metal ions are summarized role spanning sensing, optoelectronics is illustrated. It started various synthesis techniques explored how earths/transition can be skillfully incorporated into matrixes, thereby endowing them discussion strategies enhancing excitation absorption efficiency, spotlighting innovations like dye sensitization surface plasmon resonance effects then extended. Subsequently, significant focus placed on functionalization Finally, comprehensive analysis challenges proposed earth/transition ion‐doped materials, summarizing insights each section provided.

Language: Английский

Citations

45
Oxygen-vacancy europium-doped MnO2 ultrathin nanosheets used as asymmetric supercapacitors DOI

Yanmei Liang,

Danhua Zhu,

Shixing Chao

et al.

Journal of Energy Storage, Journal Year: 2023, Volume and Issue: 60, P. 106673 - 106673

Published: Jan. 19, 2023

Language: Английский

Citations

44
Multimode Emission from Lanthanide‐Based Metal–Organic Frameworks for Advanced Information Encryption DOI

Yao Xie,

Guotao Sun, Jiwei Li

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(43)

Published: June 25, 2023

Abstract Although remarkable progress on luminescent materials is made in advanced optical information storage and anti‐counterfeiting applications, many challenges still remain these fields. Currently, most are based a single photoluminescent model that can be easily imitated by substitutes. In this work, series of multimodal emission lanthanide‐based metal–organic frameworks (MOFs) developed, where they emit red green light originating from Eu 3+ Tb under ultraviolet irradiation. Meanwhile, 980 nm near‐infrared laser irradiation, MOFs show cyan upconversion cooperative luminescence derived Yb characteristic lanthanide activators (Eu , or Ho ), respectively. Based the integrated functionality, functional applications successfully designed, which indicates features detected lamps (254 393 nm) laser. And, unique high level security application, would sufficiently complex to forged.

Language: Английский

Citations

43
Aggregation induced emission dynamic chiral europium(III) complexes with excellent circularly polarized luminescence and smart sensors DOI Creative Commons
Yun‐Lan Li, Hai‐Ling Wang, Zhong‐Hong Zhu

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: April 4, 2024

Abstract The synthesis of dynamic chiral lanthanide complex emitters has always been difficult. Herein, we report three pairs Eu III ( R/S -Eu-R-1 , R = Et/Me; -Eu-Et-2 ) with aggregation-induced emission. In the molecular state, these complexes have almost no obvious emission, while in aggregate they greatly enhance emission through restriction intramolecular rotation and vibration. asymmetry factor circularly polarized luminescence brightness are as high 0.64 5 D 0 → 7 F 1 2429 M −1 cm -Eu-Et-1 achieving a rare double improvement. -Eu-Et-1/2 exhibit excellent sensing properties for low concentrations Cu II ions, their detection limits 2.55 4.44 nM, respectively. Dynamic constructed by using ligands rotor structures or vibration units, an approach that opens door construction luminescent materials.

Language: Английский

Citations

37
The first chiral cerium halide towards circularly-polarized luminescence in the UV region DOI
Xinyi Niu, Zhichao Zeng, Zhaoyu Wang

et al.

Science China Chemistry, Journal Year: 2024, Volume and Issue: 67(6), P. 1961 - 1968

Published: Feb. 7, 2024

Language: Английский

Citations

30
High-entropy rare earth materials: synthesis, application and outlook DOI
Hao Fu, Yong Jiang, Mengzhen Zhang

et al.

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(4), P. 2211 - 2247

Published: Jan. 1, 2024

A comprehensive review towards the synthesis, properties, application and outlook of high entropy rare earth materials including alloys ceramics, as well distinctive issues related to their unique electronic structures.

Language: Английский

Citations

29