Amine-functionalized lanthanide-doped KGdF(4) nanocrystals, synthesized via a facile one-step solvothermal route by employing polyethylenimine as the surfactant and capping ligand, have been demonstrated to be sensitive time-resolved FRET bioprobes detect trace amount of biomolecules such avidin at concentration 5.5 nM potential T(1)-MRI contrast agents due large longitudinal relaxivity Gd(3+) (5.86 S(-1)·mM(-1) per Gd ion 3.99 × 10(5) nanocrystal).

Abstract All-inorganic CsPbX 3 (X = Cl, Br, and I) perovskite quantum dots (PeQDs) have shown great promise in optoelectronics photovoltaics owing to their outstanding linear optical properties; however, nonlinear upconversion is limited by the small cross-section of multiphoton absorption, necessitating high power density excitation. Herein, we report a convenient versatile strategy fine tuning luminescence PeQDs through sensitization lanthanide-doped nanoparticles. Full-color emission with...

Abstract The launch of the big data era puts forward challenges for information preservation technology, both in storage capacity and security. Herein, a brand new optical medium, transparent glass ceramic (TGC) embedded with photostimulated LiGa 5 O 8 : Mn 2+ nanocrystals, capable achieving bit-by-bit write-in read-out photon trapping/detrapping mode, is developed. highly ordered nanostructure enables light–matter interaction high encoding/decoding resolution low bit error rate....

Abstract The design of bright NIR‐II luminescent nanomaterials that enable efficient labelling proteins without disturbing their physiological properties in vivo is challenging. We developed an strategy to synthesize gold nanoclusters (Au NCs) protected by biocompatible cyclodextrin (CD). Leveraging the ultrasmall size Au NCs (<2 nm) and strong macrocycle‐based host–guest chemistry, as‐synthesized CD‐Au can readily label proteins/antibodies. Moreover, labelled proteins/antibodies highly...

Impurity doping is an effective approach to tuning the optoelectronic performance of host materials by imparting extrinsic electronic channels. Herein, a family lanthanide (Ln3+) ions was successfully incorporated into Bi:Cs2AgInCl6 lead-free double-perovskite (DP) semiconductor, expanding spectral range from visible (Vis) near-infrared (NIR) and improving photoluminescence quantum yield (PLQY). After multidoping with Nd, Yb, Er Tm, Bi/Ln:Cs2AgInCl6 yielded ultrabroadband continuous emission...

Fundamental understanding of the effect doping on optical properties 3D double perovskites (DPs) especially dynamics self-trapped excitons (STEs) is vital importance for their optoelectronic applications. Herein, a unique strategy via Cu+ to achieve efficient STE emission in alloyed lead-free Cs2 (Ag/Na)InCl6 DPs reported. A small amount (1.0 mol%) results boosted crystals, with photoluminescence (PL) quantum yield increasing from 19.0% 62.6% and excitation band shifting 310 365 nm....

Abstract Rare earth luminescent materials based on negative thermal expansion (NTE) have achieved thermally enhanced photoluminescence, but these typically exhibit relatively weak luminescence intensity at room temperature. In this work, adopting the cationic heterovalent substitution strategy, a series of Sc 2‐2x Zr x Nb W 3‐1.5x O 12‐3x :Yb/Er (SZNWO :Yb/Er) phosphors are prepared by solid‐state reaction. With increase value, 3+ 4+ /Nb 5+ leads to decrease in local symmetry Er . Compared...

Near-infrared (NIR) II luminescence between 1000 and 1700 nm has attracted reviving interest for biosensing due to its unique advantages such as deep-tissue penetration high spatial resolution. Traditional NIR-II probes organic fluorophores usually suffer from poor photostability potential long-term toxicity. Herein, we report the controlled synthesis of monodisperse NaCeF4:Er/Yb nanocrystals (NCs) that exhibit intense emission upon excitation at 980 nm. Ce3+ in host lattice was found...

In this communication, we report a series of high-efficiency full-colour fluorescent materials based on isostructural mixed-lanthanide metal–organic complexes. By varying the stoichiometric ratio lanthanide ions, fluent change emission colours within region was realized and strong white light-emission with high quantum yield up to 62% also achieved.

Lanthanide-doped upconversion nanoparticles (UCNPs) have shown great promise in versatile bioapplications. For the first time, organosilica-shelled β-NaLuF4:Gd/Yb/Er nanoprobes with a rattle structure been designed for dual-modal imaging and photodynamic therapy (PDT). Benefiting from unique aromatic framework, these are endowed high loading capacity disaggregation effect of photosensitizers. After β-carboxyphthalocyanine zinc or rose Bengal into nanoprobes, we achieved higher energy...

Abstract Nd 3+ ‐doped near‐infrared (NIR) luminescent nanocrystals (NCs) have shown great promise in various bioapplications. A fundamental understanding of the electronic structures NCs is vital importance for discovering novel ‐activated nanoprobes and exploring their new applications. Herein, LiLuF 4 are unraveled by means low‐temperature high‐resolution optical spectroscopy. The photoactive site symmetry its crystal‐field (CF) transition lines NIR region interest identified. By taking...

Manipulating the distribution of rare-earth activators in multiple cation lattices can achieve versatile color output for single-phased phosphor-converted white light-emitting diodes (LEDs). However, successful cases are barely reported, owing to uncertain and special combination three primary colors LEDs. Herein, we took whitlockite β-Ca3(PO4)2 as a lattice host manipulate redistribution Eu2+ activators, surprising Mg2+-guided among different Ca sites is reported first time regulate...

Abstract The synthesis of hydrophilic lanthanide‐doped nanocrystals (Ln 3+ ‐NCs) with molecular recognition ability for bioimaging currently remains a challenge. Herein, we present an effective strategy to circumvent this bottleneck by encapsulating Ln ‐NCs in graphene oxide (NCs@GO). Monodisperse NCs@GO was prepared optimizing GO size and core–shell structure NaYF 4 :Yb,Er@NaYF , thus combining the intense visible/near‐infrared II (NIR‐II) luminescence NCs unique surface properties...

Doping is an effective strategy for tailoring the optical properties of 0D Cs4PbX6 (X = Cl, Br, and I) perovskite nanocrystals (NCs) expanding their applications. Herein, a unique approach reported controlled synthesis pure-phase Mn2+-doped Cs4PbCl6 NCs excited-state dynamics Mn2+ unveiled through temperature-dependent steady-state transient photoluminescence (PL) spectroscopy. Because spatially confined structure perovskite, exhibit drastically different PL in comparison with 3D CsPbCl3...

Highly efficient single-composition white-emitting phosphors based on NaSrBO₃:Ce³⁺,Sm³⁺,Tb³⁺have been developed for the fabrication of near-UV excited white LEDs with a high color rendering index.

One batch yield as high 63.38 g of uniform lanthanide-doped NaREF₄ nanoprobes was achieved <italic>via</italic> a novel solid–liquid-thermal-decomposition strategy.

The rapid emergence of drug-resistant bacteria has raised a great social concern together with the impetus for exploring advanced antibacterial ways. NIR-triggered antimicrobial photodynamic therapy (PDT) by lanthanide-doped upconversion nanoparticles (UCNP) as energy donor exhibits advantages high tissue penetration, broad spectrum and less acquired resistance, but is still limited its low efficacy. Now we designed bio-inorganic nanohybrid combined lysozyme (LYZ) UCNP-PDT system to enhance...

A broadband NIR photostimulated luminescence nanoprobe with an ultralow power density threshold is developed based on CaS:Eu²⁺,Sm³⁺ nanocrystals.

Plasmon-driven photochemical N₂ fixation in pure water can be realized over MoO_3−x nanosheets under visible to NIR excitation.

Exploring highly efficient near-infrared (NIR) emitting materials is desirable for the advancement of next-generation smart NIR light sources. Different from most reported Cr3+-doped emitters with far-red emissions, Yb3+-activated phosphors are expected to yield pure (∼1000 nm) light. Herein, a new hot-injection route using all metal-oleate salts fabricate Yb3+-doped CsPbCl3 perovskite nanocrystals (PeNCs) first time, which produce PeNC-sensitized Yb3+ emission photoluminescence quantum...

Abstract The green‐emissive laser phosphor is urgently demanded for projection displays to compensate the “Green Gap.” Herein, well‐known β‐SiAlON:Eu 2+ with admirable luminescent feature incorporated into robust silicate glass matrix, cosintered on sapphire plate, and then constructed “phosphor wheel,” succeeding in retaining excellent performance meanwhile relieving luminescence droop at high pumping density of blue laser. Probing local effect laser–matter interaction reveals that...

Abstract Large-size scintillators with high efficiency and ultrafast radiation fluorescence have shown more potential in the applications to ionizing detection of medical diagnosis, nuclear control high-energy physics. Currently, although traditional made tremendous progress scintillation efficiency, there are still challenges left lifetime. Faced that problem, we adopted 2-inch ZnO as substrate doped gallium activator realize an excited by α-ray, which decay time is only 600 ps shortest...

A series of new Sb 3+ doped-(DETA)InCl 6 organic–inorganic hybrid metal halide single crystals were synthesized. The PLQY doped with 10% was up to 100%, and white light emission achieved when the doping amount 0.005%.

The thermally enhanced luminescence mechanism of Al 2 (WO 4 ) :Yb/Er with low thermal expansion is revealed. High sensitivity optical thermometry realized via the difference in red/green temperature response.