Luminescence properties of lanthanide tetrakis complexes as molecular light emitters

Coordination Chemistry Reviews, Год журнала: 2023, Номер 502, С. 215590 - 215590

Опубликована: Дек. 21, 2023

Язык: Английский

---

Gold core@CeO2 halfshell Janus nanocomposites catalyze targeted sulfate radical for periodontitis therapy

Journal of Controlled Release, Год журнала: 2024, Номер 370, С. 600 - 613

Опубликована: Май 14, 2024

Язык: Английский

---

Emergent induced circularly polarized luminescence in host–guest crystalline porous assemblies

Coordination Chemistry Reviews, Год журнала: 2024, Номер 514, С. 215859 - 215859

Опубликована: Май 9, 2024

Язык: Английский

---

Temperature-Dependent Photoluminescence from Well-Resolved Excited State Structures in Rare-Earth-Based Double Perovskites

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(24), С. 31332 - 31340

Опубликована: Июнь 4, 2024

Lead-free halide double perovskites (DPs) have become a research hotspot in the field of photoelectrons due to their unique optical properties and flexible compositional tuning. However, reports on DPs primarily concentrate room temperature state only exhibit single emission band. Here, we synthesized Cs2NaYCl6:Sb3+, Dy3+ by solvothermal method realize white light with photoluminescence (PL) quantum yield as high 70.7%. The energy-transfer process from self-trapped excitons (STEs) ions was revealed characterization theoretical simulation calculations. Interestingly, observed double-emission low-energy STE Sb3+ at low temperatures, is consistent asymmetric doublet feature 3P1 → 1S0 transition split into two minima. PL spectra further showed that fluorescence intensity ratios 580 680 nm were strongly temperature-dependent, relative sensitivity up 1.79% K–1 360 K. Moreover, near-infrared radiation luminescence indicated also good prospects for night vision detection, well great potential applications solid-state illumination measurement.

Язык: Английский

---

Thermal Enhanced Energy Transfer and High Thermal Sensitivity of Sb³⁺ Doped Cs₂KYbCl₆ Rare Earth Double Perovskites

Laser & Photonics Review, Год журнала: 2024, Номер unknown

Опубликована: Июнь 9, 2024

Abstract Rare‐earth based double perovskites (DPs) have attracted much attention due to stable, efficient, and unique luminescence, wide applications in many optoelectronic fields. However, their weak near‐infrared (NIR) emission poor anti‐thermal quenching severely limit the further applications. Herein, Sb 3+ ‐doped Cs 2 KYbCl 6 DP with cyan self‐trapped exciton (STE) NIR is prepared by a solvothermal method, separate photoluminescence quantum yields from STE reached ≈26.1% 43.8%, respectively. More importantly, not only contributes absorption energy transfer but also helps establish an effective thermally enhanced channel through self‐trapping state, resulting superior resistance. The thermal sensitivity of luminescence intensity ratio (LIR) I 1010 nm / 505 ( PL) time‐resolved temperature sensor reach 21.4 13.6% K −1 , respectively, which are ahead most sensing materials. Furthermore, it found that material exhibited advanced multifunctional LED lighting, flexible luminescent thin film, imaging. This work provides in‐depth understanding on photophysical mechanisms rare‐earth materials references for designing high‐performance

Язык: Английский

---

An ATP-responsive metal–organic framework against periodontitis via synergistic ion-interference-mediated pyroptosis

National Science Review, Год журнала: 2024, Номер 11(8)

Опубликована: Июнь 26, 2024

ABSTRACT Periodontitis involves hyperactivated stromal cells that recruit immune cells, exacerbating inflammation. This study presents an ATP-responsive metal–organic framework (Mg/Zn-MOF) designed for periodontitis treatment, utilizing ion interference to modulate responses and prevent tissue destruction. Addressing the challenges of synergistic effects targeted delivery faced by traditional immunomodulatory nanomaterials, Mg/Zn-MOF system is activated extracellular ATP—a pivotal molecule in pathology—ensuring release. Magnesium zinc ions released from synergistically inhibit membrane pore formation attenuating Gasdermin D (GSDMD) expression activation. action curtails pyroptosis, lactate dehydrogenase IL-1β release, thwarting onset inflammatory cascades. Mechanistically, intervenes both NLRP3/Caspase-1/GSDMD Caspase-11/GSDMD pathways mitigate pyroptosis. In vivo assessments confirm its effectiveness diminishing cell infiltration preserving collagen integrity, thereby safeguarding against periodontal damage bone loss. investigation highlights promise ion-interference strategies immunotherapy, representing a significant stride developing therapeutic approaches.

Язык: Английский

---

Perspectives and challenges in circularly polarized luminescence of lanthanide(III) complexes: From solution-based systems to solid-state applications

Coordination Chemistry Reviews, Год журнала: 2024, Номер 523, С. 216279 - 216279

Опубликована: Окт. 16, 2024

Язык: Английский

---

Sequential addition of cations increases photoluminescence quantum yield of metal nanoclusters near unity

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Янв. 11, 2025

Abstract Photoluminescence is one of the most intriguing properties metal nanoclusters derived from their molecular-like electronic structure, however, achieving high photoluminescence quantum yield (PLQY) core-dictated fluorescence remains a formidable challenge. Here, we report efficient suppression total structural vibrations and rotations, management pathways rates electron transfer dynamics to boost near-unity absolute PLQY, by decorating progressive addition cations. Specifically, with sequential Zn 2+ , Ag + Tb 3+ into 3-mercaptopropionic acids capped Au (NCs), low-frequency vibration core progressively decreases 144.0, 55.2 40.0 cm −1 coupling strength electrons-high-frequency related surface motifs gradually diminishes 40.2, 30.5 14.4 meV. Moreover, introducing cation additives significantly reduces time 40, 27 12 ps in pathway staple core. This benefits shrinkage structure that speeds up shell-core transition, particular, provides hopping platform for excited electrons as intrinsic ladder-like energy level structure. As result, it allows remarkable enhancement 51.2%, 83.4%, 99.5%.

Язык: Английский

---

Chiral light–matter interactions in solution-processable semiconductors

Nature Reviews Chemistry, Год журнала: 2025, Номер unknown

Опубликована: Фев. 17, 2025

Язык: Английский

---

Chiral europium halides with high-performance magnetic field tunable red circularly polarized luminescence at room temperature

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Март 14, 2025

Chiral organic-inorganic hybrid metal halides as promising circularly polarized luminescence (CPL) emitter candidates hold great potential for high-definition displays and future spin-optoelectronics. The recent challenge lies primarily in developing high-performance red CPL emitters. Here, coupling the f-f transition characteristics of trivalent europium ions (Eu3+) with chirality, we construct chiral Eu-based halides, (R/S-3BrMBA)3EuCl6, which exhibit strong predictable emission large photoluminescence quantum yield (59.8%), narrow bandwidth (≈2 nm), long lifetime ms), together dissymmetry factor |glum| 1.84 × 10−2. Compared previously reported these show highest brightness. Furthermore, degree polarization (R/S-3BrMBA)3EuCl6 can be manipulated by external magnetic field. Particularly, benefiting from field-generated Zeeman splitting spin mixing at exciton states, an anomalously positive magneto-photoluminescence was observed room temperature. This work provides efficient strategy constructing both pure-red It also opens door rare-earth toward optoelectronic spintronic applications. perovskites are materials luminescence. Here authors present leading to magneto-chiroptical properties.

Язык: Английский

---