Nano-Micro Letters
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2026
·Vol. 18
·期 1
·294
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IF 38.5
Yao Zhiwei,Liang Changsheng,Bi Chenghao,Zhou Wenyuan,Ren Ke,Deng Ming,Ding Shuo,Xiang Chaoyu
A new quantum dot (QD) films with negligible redshift of photoluminescence spectra after film fabrication from QD solution.
An electron barrier around QDs realized by adopting ligands with concentrated electron distribution.
Record external quantum efficiency of light-emitting diodes based on CsPbI 3 QDs (28.9% at 640 nm and 32.0% at 657 nm).
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CRYSTENGCOMM
·
2026
·
IF 2.4
Qi Zheng,Tianyun Du,Chunqian Xu,Xiuxun Han
The development of efficient near-infrared (NIR) luminescent materials excitable by visible light remains a significant challenge for practical applications in bioimaging and sensing. Here, we report a novel sensitization strategy to achieve high-efficiency NIR-II emission in lead-free halide double perovskites. Cr3+/Tm3+ co-doped Cs2Ag0.6Na0.4InCl6 single crystals were synthesized via a hydrothermal method. The introduced Cr3+ ions reside in a tailored weak crystal field of the Na+-alloyed host and exhibit strong absorption in the visible region. Furthermore, energy is effectively transferred from Cr3+ to Tm3+ activators, thereby overcoming the intrinsic limitation of weak f–f absorption in lanthanide ions. This strategy yields a remarkable enhancement of the characteristic Tm3+ emission at 1226 nm. The optimally doped phosphor, Cs2Ag0.6Na0.4InCl6:30% Cr3+/30% Tm3+ (nominal feed ratios; actual doping concentrations: 0.14% for Cr3+ and 1.57% for Tm3+), achieves a high photoluminescence quantum yield (PLQY) of 35.8% under 340 nm excitation. The phosphor demonstrates excellent environmental stability, retaining 86.87% of its initial intensity after 210 days of storage under ambient conditions. A fabricated NIR phosphor-converted light-emitting diode (pc-LED) successfully enables proof-of-concept applications in non-destructive food freshness analysis and deep-tissue imaging. This work provides a fundamental design principle utilizing transition-metal sensitization in engineered perovskite hosts for high-performance, stable, and eco-friendly NIR light sources.
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JOURNAL OF ALLOYS AND COMPOUNDS
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2026
·
IF 6.7
Zuobin Tang,Fulong Hao,Xiyuan Zhang,Wanyu Zhao,Zehua Xue,Liying Zhu,Yaxuan Li,Zhihua Leng
Broadband green-yellow phosphors remain critical for achieving high-performance white light-emitting diodes (WLEDs), particularly in addressing spectral gaps and improving color rendering. Herein, a novel garnet-type Y 3 Sc 2 Al 3 O 12 :Ce 3 + phosphor is developed via a high-temperature solid-state method, exhibiting intense broadband emission centered at 545 nm with a full width at half-maximum of 115 nm. Structural and spectral analyses reveal that Ce 3+ ions initially occupy Y 3+ sites and progressively substitute Sc 3+ sites at higher doping concentrations, giving rise to multiple luminescent centers. The optimized Y 3 Sc 2 Al 3 O 12 :0.02Ce 3+ sample exhibits a near-unity photoluminescence quantum yield (98.3%) and excellent thermal stability, retaining 85% of its initial emission intensity at 425 K. A prototype WLED fabricated by combining this phosphor with commercial CaAlSiN 3 :Eu 2+ red phosphor and a blue LED chip delivers warm white light with a color rendering index of 87.1 and a correlated color temperature of 4073 K. In addition, the laser-driven luminescence behavior of the phosphor ceramic sheet prepared by hot-pressing sintering were preliminarily investigated. This work provides a new and highly efficient garnet candidate material for WLEDs, and also offers guidance for the further development of high-power solid-state lighting.
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Cell Reports Medicine
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2026
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IF 14
Ziqiao Zhong,Lu Gan,Yihong Gao,Siyuan Peng,Yeqi Huang,Xincheng Lin,Jintao Fu,Ziyi Feng,Zhengwei Huang,Xin Pan,Chuanbin Wu,Wenhao Wang,Ying Huang
Fatty acid-rich milieu is recognized as a potential key factor driving postsurgical tumor recurrence, while insufficient drug delivery to irregular surgical margins further compromises therapeutic effects. We find that this milieu directly drives lipid droplet accumulation in tumor-associated macrophages (TAMs), promoting M2 polarization, which can be reversed by rapamycin (Ra) via enhanced lipid droplet metabolism. Accordingly, we design a light-driven thermotropic hydrogel (LTG@RL) encapsulating a nanomodulator (R@LOX) containing lipoxygenase and Ra. Upon photothermal irradiation, LTG@RL undergoes reversible gel-sol transition for deep cavity penetration and sustained retention. R@LOX coordinates lipid intervention. It uses tumor-derived fatty acids to generate lipid peroxides, inducing ferroptosis in residual cancer cells, while repolarizing TAMs to the M1 phenotype to restore immune surveillance. In postsurgical melanoma and breast cancer models, LTG@RL suppresses tumor recurrence, prolongs survival, and also exhibits activity in non-surgical melanoma models. This strategy integrates lipid intervention and enhanced cavity delivery, offering precision prevention of postsurgical recurrence.
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International Journal of Extreme Manufacturing
·
2026
·Vol. 8
·期 5
·055101
·
IF 25.1
Mingyue Cao,Wenxin Wang,Xingyu Yang,Wei Zhu,Xiaolong Zhu,Yinfeng He,Feng Chen,Xiaoxiao Han
Light scattering remains a critical barrier in digital light processing (DLP)-based ceramic additive manufacturing, particularly for achieving high precision, fine resolution, and complex geometries. In this study, we present a novel light scattering mitigation strategy by incorporating a multifunctional reactive additive that combines physical light absorption near 405 nm and chemical free radical scavenging. Curcumin effectively suppresses undesired photopolymerization in non-target regions by neutralizing scattered-light-generated radicals, enabling the fabrication of intricate structures with dimensional fidelity approaching the optical resolution limit (∼2.6 pixels). The strategy operates effectively at low concentrations (0.01 wt%) without requiring process parameter tuning, offering a broad process window and high reproducibility. Furthermore, the strategy is generalizable across diverse ceramic systems, including light-colored ceramics (Al2O3, ZrO2, and SiO2), and dark-colored ceramics (SiC) that are particularly susceptible to scattering. The geometric error of printed SiC components remains below 10% even at high exposure doses of 80 and 100 mJ·cm−2, effectively addressing the long-standing trade-off between curing depth and lateral resolution. This work provides a simple, scalable, and versatile approach for improving resolution in DLP ceramic printing, advancing the reliable production of fine-scale (<50 μm) ceramic architectures for applications in biomedicine, microelectronics, and precision engineering.
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ACS Applied Polymer Materials
·
2026
·
IF 5.2
Limo Wang,Bingjie Xu,Xinting Dong,Danfeng Jian,Tianming Lu,Yujie Gao,Jindan Wu
The misuse of antibiotics has resulted in multidrug resistance among bacteria, rendering nearly all conventional antibiotics ineffective and creating a pressing global need for highly efficient and broad-spectrum antibacterial alternatives. Photodynamic antibacterial therapy (PDAT) has emerged as a promising strategy to address bacterial resistance; however, its efficacy is limited by inherent challenges such as poor tissue penetration, short diffusion ranges, and brief half-lives of reactive oxygen species (ROS). In this study, we developed an antibacterial composite nanofiber membrane with red light responsiveness by incorporating functional l-arginine-modified PCN-224 nanoparticles (Arg-PCN NPs), which enabled NO-enhanced synergistic PDAT. Specifically, Arg-PCN NPs were synthesized and subsequently embedded into a polylactic acid (PLA) matrix by electrospinning, yielding a porous nanocomposite membrane (APM). Under irradiation, APM showed a strong synergistic antibacterial effect, and the bactericidal rate against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) reached 99.9%. Comprehensive mechanistic studies revealed that APM potently enhanced bacterial membrane permeability and elevated intracellular ROS levels upon irradiation. Furthermore, cytotoxicity assays confirmed that APM exhibited negligible in vitro cytotoxicity. The red light-activated antibacterial membrane developed in this work holds significant potential for wound care applications and provides a design strategy for advanced antibacterial materials capable of combating drug-resistant bacterial infections.
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Journal of Materials Chemistry A
·
2026
·
IF 9.2
Xinwen Gao,Yuyang Zhang,Wenyang Huang,Yuhan He,Tingting Yu
Light-driven micromotors are easily accessible and controllable without tethering, but their development faces challenges due to the need for monochromatic light, tracking difficulties, and environmental limitations. In this work, we present Hexagon-BiVO4 micromotors that exhibit exceptional photocatalytic efficiency and enable effective multi-wavelength propulsion in pure water under low-intensity illumination at 365, 455, 530, and 660 nm, without requiring complex optical systems. Unlike non-fluorescent particles, their photoluminescence allows detection at 4× magnification for wide-field tracking over a 17 mm working distance. This tracking capability has been validated in dark blood samples. Additionally, the micromotors sustain stable movement in complex media containing glycerol, urea, or glucose, and exhibit ionic tolerance after modification. Finally, we demonstrate their versatility in contaminated river water, with movement observed under low-intensity mercury light, and confirm their ability to decompose and remove pollutants from various water sources. Combining broad‑spectrum actuation, photoluminescence, and environmental resilience, this platform offers potential for versatile applications in targeted therapy and environmental cleanup.
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Small
·
2026
·
IF 11.8
Yinuo Yang,Ning Zhu,Yisong Liu,Ziye Zhang,Weiwei Zhao,Hongyu Zhang
Dry eye disease (DED) is driven by tear film instability and increased blink-induced interfacial friction, exacerbating epithelial injury and inflammation. The conventional treatments, including artificial tears and hydrogel/contact-lens approaches, all fail to achieve sustained friction control due to limited lubrication durability, rapid clearance, surface dehydration, and foreign-body sensation. Here we developed a light-triggered hydration-lubricating nanoplatform (PAM@HK) that simultaneously restored ocular surface lubrication and enabled on-demand anti-inflammatory therapy. PAM@HK was assembled from an amphiphilic block copolymer that integrated a phosphorylcholine segment to form a robust hydration layer for hydration lubrication and an azobenzene hydrophobic segment for light-switchable honokiol (HK) release. The tribological tests under blink-relevant load and shear revealed that PAM achieved ultralow friction across macroscopic and microscopic scales, evidencing stable hydration lubrication. The near-infrared light irradiation triggered reversible photo-isomerization to greatly accelerate HK release on demand. In DED mouse model, PAM@HK markedly restored corneal integrity and tear film stability, increased tear secretion, preserved conjunctival goblet cells, and suppressed interleukin-6, reactive oxygen species, and pathological keratinization. This work positioned hydration lubrication as a primary therapeutic approach for DED and provided a new low-invasive, light-programmable strategy with superior durability and mechanistic relevance over conventional passive lubrication intervention.
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Materials
·
2026
·Vol. 19
·期 12
·2602
·
IF 3.7
Bin Wang,Xinyu Shi,Qianping Wang,Xinrui Jiang,Wanqi Wang,Hui Chen
The development of sustainable, noble-metal-free photocatalytic systems for acceptorless dehydrogenation (ADH) of cyclic amines remains a significant challenge. Herein, we report a novel heterogeneous photocatalyst constructed by covalently grafting a cobaloxime-based proton reduction catalyst onto a photosensitive covalent organic framework (PT-COF). The tailored PT-COF scaffold, featuring a donor–acceptor architecture and uncondensed amino groups, serves as both an efficient visible-light harvester and a porous support for cobalt active sites. The resulting Co-PT-COF hybrid exhibits excellent photocatalytic activity for the ADH of a wide range of cyclic amines, affording the corresponding N-heteroarenes in 62–95% yields under an Ar atmosphere at 28 °C with blue LED irradiation for 12 h in water. Notably, the catalyst demonstrates outstanding recyclability over five consecutive cycles with minimal loss of activity or cobalt leaching. Comprehensive photoelectrochemical and spectroscopic studies reveal that enhanced charge separation and efficient electron transfer from the photoexcited COF to the cobalt centers underpin the superior performance. Mechanistic investigations, including in situ EPR spectroscopy, confirm the involvement ofα-amino radical intermediates in the catalytic cycle. This work establishes a sustainable platform for solar-driven dehydrogenation chemistry and provides a versatile blueprint for integrating molecular catalysts with photoactive frameworks.
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ARCHIVES OF MICROBIOLOGY
·
2026
·Vol. 208
·期 8
·385
·
IF 3.4
Wang Jiahui,Zhu Yuzhang,Liu Tao,Hong Xiangyu,Liu Mi,Zhou Rui,Li Xianke,Jing Mingguo,Yang Lifang
The antibacterial strategy that utilizes ultraviolet-A (UVA)-irradiated natural photosensitizers is promising, being particularly effective against multidrug-resistant pathogens with high bactericidal efficiency and minimal resistance-inducing risk. Rutin is a natural flavonoid with wide availability, low cytotoxicity, and diverse pharmacological activities, making it a promising photosensitizer; however, its UVA-induced photodynamic antibacterial properties remain underexplored. The aim of this study is to systematically evaluate the antibacterial efficacy and mechanism of UVA-Rutin against foodborne Escherichia coli O157:H7 . In the study, Fourier transform infrared spectroscopy and Raman spectroscopy were used to characterize structural alterations in rutin post-UVA irradiation, focusing on functional groups relevant to photodynamic activity. Antibacterial efficacy was assessed via standardized assays including minimum inhibitory concentration (MIC) determination, while biocompatibility was evaluated using MTT cytotoxicity assays. To confirm the antibacterial effects, physiological/structural perturbations of bacteria were measured, including cell membrane integrity, DNA damage, motility, biofilm formation, and extracellular polysaccharide (EPS) production, as well as the generation of intracellular reactive oxygen species (ROS) measured using fluorescent probes. Reverse transcription quantitative polymerase chain reaction was used to analyze key virulence- and quorum sensing-related genes ( luxS , phoP , qseB , qseC ). Results showed that UVA-induced structural changes enhanced the photosensitizing activity of rutin. UVA-Rutin exhibited significant antibacterial activity (low MIC) and good biocompatibility, triggering the generation of massive intracellular ROS, disrupting cell membranes, inducing DNA damage, impairing motility, inhibiting biofilm/EPS production, and downregulating target genes. Collectively, UVA-Rutin exerts potent antibacterial effects via ROS-mediated structural/functional disruption and virulence gene regulation, highlighting its potential as a novel food industry antibacterial agent.
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Science Advances
·
2026
·Vol. 12
·期 20
·
IF 13.9
Yizhao Qing,Bing Han,Runnan Yu,Zhuoxu Liu,Peijin Ma,Zongzhi Yang,Haoyu Yuan,Changxiao Li,Shihao Sha,Qirui Hou,Xuejiao Zhou,Biao Zhao,Zhan’ao Tan
Copper halide clusters are emerging as attractive electroluminescent materials due to their strong emission and heavy metal–free nature, but their cost-effective practical application has been limited by the inherent trade-off between scalable synthesis and solution processability. This dilemma motivates us to design a universal thermodynamically motivated molecular design strategy. Alkyl-free aromatic ligand diphenyl-2-pyridylphosphine (Ph 2 PPy) reduces the entropy gain and increases the enthalpy change in dissolution, which maximizes the tunability of solubility and allows the coexistence of scalable single-step precipitation and solution processability. The kilogram-scale synthesis demonstrates near-unity yield, high reproducibility, operational robustness, and high product purity, while also being applicable to other alkyl-free precursors. We achieve uniform crystalline films with a photoluminescence quantum yield of 85.49% by kinetically controlled hot solution process. The electroluminescent devices achieve a record external quantum efficiency of 21.08% and a maximum luminance of 66,388 candela per square meter—the highest among doping-free, solution-processed copper halides, paving the way toward cost-effective light-emitting technologies.
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Advanced Optical Materials
·
2026
·
IF 7.2
Guohao Bu,Shujian Wang,Chen Yang,Wenyuan Zhou,Chao Tian,Naiwei Liu,Jun Pan,Chaoyu Xiang
The synthesis of perovskite nanocrystals for light-emitting diodes typically employs poorly controlled ion-mediated precipitation processes, suffering from low photoluminescence quantum yield (PLQY), inhomogeneous morphology, and poor stability. Herein, by adjusting the nucleation method with a new type of precursor, namely “DMAPbI 3 ”, high-quality and low-defect-density perovskite CsPbI 3 nanocrystals were successfully synthesized, with PLQY of 93% emitting at 659 nm. Particularly, the CsPbI 3 nanocrystals exhibit enhanced environmental stability, maintaining ∼70% of their initial photoluminescence intensity after 6 h of UV irradiation exposure or 100°C aging. Utilized as the luminescent layer, the fabricated perovskite LED (PeLED) device shows a peak EQE of 27.5%, representing an almost two-fold enhancement compared to 14.7% for the control PeLED device. This simple and efficient approach is well-suited for large-scale production and practical applications.
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