JOURNAL OF ALLOYS AND COMPOUNDS
·
2026
·
IF 6.7
Teng Gao,Tianshu Chen,Haijiang Tian,Qiusheng Lin,Hongping Duan,Siyuan Li,Bosen Zhang
All-inorganic cesium lead halide perovskite quantum dots (CsPbX 3 QDs) exhibit exceptional optoelectronic properties but suffer from poor stability under ambient conditions, which severely limits their practical applications. In this work, a sequential passivation strategy was developed to simultaneously enhance the photoluminescence quantum yields (PLQYs) and long-term stability of CsPbX 3 QDs. First, 4-bromobutyric acid (BBA) and oleylamine (OLA) were employed as co-ligands during a recrystallization synthesis in aqueous solution, yielding BBA/OLA-capped CsPbX 3 QDs with improved water resistance. Subsequently, the as-prepared QDs were further treated with phenethylammonium bromide (PEABr) to passivate residual surface defects, particularly bromide vacancies, forming a dense hydrophobic ligand shell. Systematic characterization using transmission electron microscopy, X-ray diffraction, UV–vis absorption, photoluminescence spectroscopy, and X-ray photoelectron spectroscopy revealed that the sequential passivation not only refines the morphology and crystallinity but also significantly suppresses non-radiative recombination. The resulting PEABr/BBA/OLA-CsPbX 3 QDs exhibit superior stability under various harsh conditions, including high humidity (70% RH), water immersion, continuous UV irradiation (365 nm), and elevated temperatures (up to 100 °C). As a proof of concept, a white light-emitting diode (WLED) was fabricated using the passivated QDs as the green-emitting layer together with a commercial InGaN blue chip and CsPb(Br/I) 3 red QDs. The device achieves Commission Internationale de l’Éclairage (CIE) color coordinates of (0.3302, 0.3261), a correlated color temperature of 5650 K, and a high color rendering index of 96, demonstrating stable white emission under varying driving currents. This sequential passivation strategy provides a facile and effective route to high-performance, ultra-stable CsPbX 3 QDs for next-generation display and solid-state lighting applications.
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RSC Advances
·
2026
·
IF 6.1
Zhenhua Zeng,Ayang Wu,Haimin Gao,Yanping Zheng,Huicong Yang,Xiaojie Yao,Zhongjie Yang
MicroRNAs (miRNAs) are important liquid biopsy biomarkers, and their multiplex detection is highly important for the early screening of hepatocellular carcinoma. This work developed a CRISPR/Cas13a biosensing platform based on near-infrared (NIR) light and glutathione (GSH) dual activation for highly sensitive and specific determination of miRNA-21, miRNA-155, and miRNA-224. The advantages of this platform lie in the introduction of GSH-responsive mesoporous silica carriers and photolytic linkers (pc-linkers), which transform the sensing process from “passive triggering” to “controllable activation”, effectively suppressing nonspecific signals. Specifically, GSH can degrade mSiO 2 with tetrasulfide bonds, thereby degrading the carrier. It will release the CRISPR/Cas13a system loaded on the carrier, thereby achieving specific recognition and cleavage of miRNA-21/155; at the same time, 808 nm NIR light excites upconversion nanoparticles (UCNPs) to generate ultraviolet light, which cleaves the pc-linker to activate the detection of miRNA-224. The detection limits of the developed assay for detecting miRNA-21, miRNA-155, and miRNA-224 were 4.2 pM, 5.7 pM, and 0.205 nM, respectively. The recoveries in the serum spiked experiments were 98.97–109.24%, with a relative standard deviation of less than 4.613%, indicating that the method has good accuracy and reliability. This work proposes a novel and reliable strategy for detecting multiple miRNAs in complex biological samples. MicroRNAs (miRNAs) are important liquid biopsy biomarkers, and their multiplex detection is highly important for the early screening of hepatocellular carcinoma.
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ACS Applied Nano Materials
·
2026
·Vol. 9
·期 29
·13832-13841
·
IF 5.8
Li Guihua,Tang Lingzhi,Wang Jingjuan,An Shuailing,Sun Mengjuan,Jiao Yinan,Yang Zhigang,Ren Shuxia,Liu Jinxi
A flexible, eco-friendly, and photoelectrically modulated
synaptic
resistive random access memory (ReRAM) device has been developed using
a lead-free nanoscale Cs 3 Bi 2 I 9 Quantum
Dot (QD) graphene oxide (GO) composite film. The Ag/PMMA/Cs 3 Bi 2 I 9 QD/GO/ITO device exhibits a remarkable
ON/OFF ratio exceeding 10 4 under illumination, representing
approximately 200-fold enhancement compared to its performance in
darkness (∼10 2 ). The device demonstrates exceptional
mechanical and environmental stability, withstanding 10,000 bending
cycles (4.6 mm radius) and 72 h of ambient exposure (25 ° C, 35%
RH). Furthermore, when implemented in an artificial neural network
(ANN) for supervised learning, the device enables a recognition accuracy
of 94.3%. We attribute this enhanced performance to a synergistic
mechanism associated with the nanoscale dimension and uniform dispersion
of Cs 3 Bi 2 I 9 QD in the composite.
First, a poly(methyl methacrylate) (PMMA) protective layer effectively
suppresses leakage current, thereby elevating the high-resistance
state (HRS). Second, photogenerated holes within the Cs 3 Bi 2 I 9 QD are efficiently trapped, promoting
the formation of I – vacancies (V I – ). This synergistic effect facilitates the formation
of hybrid Ag/V I – conductive filaments,
reducing both SET voltage (by 47.7%) and low-resistance state (LRS)
resistance under illumination. These findings underscore the pivotal
role of optoelectronic coupling in optimizing resistive switching
behavior, paving the way for sustainable neuromorphic computing systems.
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ACS Applied Nano Materials
·
2026
·Vol. 9
·期 30
·14209-14222
·
IF 5.8
Li Hui,Fan Jingnan,Liao Jiamei,Chen Ke,Tang Qingxia,Tang Hua,Wang Dan
Hepatocellular
carcinoma (HCC) remains a significant therapeutic
challenge due to multiple bottlenecks, including low early diagnosis
rates, rapid disease progression, and limited efficacy of monotherapy.
Against this backdrop, multimodal integrated treatment has emerged
as a core solution. Here, we reported a tumor-microenvironment (TME)-activatable
“nano-cocktail” (UMDCAc) that synchronizes photodynamic
(PDT), chemodynamic (CDT), and starvation (ST) therapies for synergistic
HCC eradication. UMDCAc was engineered by growing hollow MnO 2 (HMnO 2 ) on upconversion nanoparticles (UCNPs), coloading
dihydroartemisinin (DHA) and the photosensitizer chlorin e6 (Ce6),
and in situ anchoring ultrasmall gold nanoparticles (AuNPs) that mimic
glucose oxidase (GOx). Surface modification with cyclic RGD peptides
enabled active targeting of α v β 3 integrin. The targeting strategy synergizes with near-infrared (NIR)
light-activated catalysis to enhance therapeutic efficacy. In vitro and in vivo data demonstrate that UMDCAc achieves tumor suppression
through synergistically amplified reactive oxygen species (ROS) generation,
hypoxia relief, and targeted delivery, while maintaining favorable
biocompatibility and safety and exhibiting superior efficacy over
monotherapy. The synergistically generated ROS compromise cellular
antioxidant defenses, induce lipid peroxidation, and double the apoptosis
rate, thereby producing effective antitumor effects. Therefore, this
innovative multimodal strategy offers opportunities for collaborative
cancer therapy.
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ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2026
·Vol. 60
·期 32
·22813-22822
·
IF 12.2
Gao Jigang,Liu Peiqi,Huang Yukai,Hu Yulong,Zhou Zhongyue,Yuan Wenhao,Zeng Meirong
Lipid oxidation driven by intermolecular interactions
plays a pivotal
role in human aging and indoor environmental quality, yet the underlying
interaction mechanisms remain largely elusive. Here, we uncover a
coupled autoxidation network in the heterogeneous co-ozonolysis of
model skin lipids (cholesterol and fatty acids), using online atmospheric
pressure photoionization coupled with an ultrahigh-resolution mass
spectrometer. Individual cholesterol exhibited extremely low heterogeneous
reactivity (determined as effective uptake coefficient, γ eff, Chol = 2.94 × 10 –6 ). However,
upon co-ozonolysis with fatty acids (oleic or linoleic acid), its
reactivity was enhanced by 31-fold (γ eff, Chol = 9.11 × 10 –5 when mixed with linoleic acid),
and elevated relative humidity further amplified this effect by an
additional 3-fold. The identification of α-alkoxyalkyl hydroperoxides,
α-acyloxyalkyl hydroperoxides, hydroxyalkyl hydroperoxides,
and secondary ozonides provides direct molecular evidence that Criegee
intermediates (CIs) drive the co-ozonolysis interaction network. Furthermore,
the detection of highly oxygenated molecules reveals that • OH reactions are triggered by CIs and hydroperoxide decomposition,
establishing a free-radical chain propagation pathway that further
accelerates autoxidation. We propose a novel interactive lipid autoxidation
mechanism: initiated by lipids’ co-ozonolysis, propagated via
CI-driven interactions, and amplified by • OH-mediated
radical chemistry. These findings unveil a coupling mechanism of CIs
and • OH pathways in governing the heterogeneous
reactivity of naturally coexisting lipids, providing fundamental insights
into their impacts on biological aging and environmental evolution.
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ACS Applied Materials & Interfaces
·
2026
·Vol. 18
·期 31
·42780-42788
·
IF 7.8
Zou Lie,Huang Xiao-Yan,Zhang Yi,A Yao-Lin,Xu Qing-Chi,Chen Bing-Hui,Liu Jinxuan,Zhang Hua,Li Jian-Feng
Understanding the molecular origins of oxygen reduction reaction (ORR) activity on Pt-based catalysts is essential for the rational design of high-performance electrocatalysts. Herein, by combining electrochemical measurements with in situ shell-isolated nanoparticle-enhanced Raman spectroscopy (SHINERS), we systematically investigate the ORR pathway on Pt-based alloy nanocatalysts incorporating different transition metals to elucidate how surface oxygenated intermediates dictate ORR activity. Among the catalysts examined, PtNi exhibited higher activity than PtFe, PtCo, and commercial Pt/C, underscoring the pronounced sensitivity of intrinsic ORR activity to alloy composition. Potential-dependent in situ Raman spectra, corroborated by isotopic labeling, directly identified *OOH as a key ORR intermediate and established a clear correlation between its vibrational frequency and catalytic activity. The results suggest that Ni alloying may modify the electronic environment of Pt, thereby weakening the Pt-O interaction, optimizing the adsorption state of the kinetically relevant *OOH intermediate, and consequently promoting ORR kinetics. This study establishes an effective spectroscopic platform for probing ORR intermediates on realistic electrocatalyst surfaces and offers molecular-level understanding of the activity enhancement in Pt-based alloy catalysts.
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APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Tiancheng Xu,Zhiheng Xu,Yong Chen,Dandan Yang,Zongyan Dong,Jinkai Yang,Xiaobin Tang
A water-triggered green synthesis strategy is developed for CsPbBr 3 nanocrystals. • Multidentate ligand anchoring induces Pb–O dominated surface coordination. • Surface coordination reconstruction effectively passivates undercoordinated Pb sites and suppresses defect states. • The resulting nanocrystals exhibit enhanced stability under aqueous and irradiation conditions. Surface instability originating from highly reactive undercoordinated Pb sites poses a critical bottleneck for the practical deployment of CsPbBr 3 nanocrystals (NCs), especially under aqueous exposure and high-dose irradiation environments. Herein, we demonstrate a facile water-triggered strategy to fabricate ultra-stable CsPbBr 3 NCs, which relies on the Cs 4 PbBr 6 precursor transformation mediated by multidentate ligand synergistic anchoring. Specifically, the cooperative coordination of 4,4′-azobis (4-cyanovaleric acid) and oleylamine regulates the dynamic equilibrium between CsBr detachment and water-induced interfacial interaction, thereby realizing the in-situ construction of a Pb–O-dominated surface passivation layer on CsPbBr 3 NCs. Such a reconstructed surface configuration efficiently passivates undercoordinated Pb defect sites, inhibits defect generation, and reinforces the structural robustness of the perovskite lattice. Impressively, the as-obtained CsPbBr 3 NCs exhibit remarkable harsh-environment tolerance: they preserve 91.53% of the initial radioluminescence intensity after 2080 Gy γ-ray irradiation, and even display a boosted emission intensity during long-term aqueous storage. These results elucidate the critical function of water-mediated surface coordination chemistry in tailoring defect states of perovskite NCs, and offer a universal and feasible route to enhance the stability of CsPbBr 3 NCs under harsh conditions. Download: Download high-res image (166KB) Download: Download full-size image
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Xiaoke Li,Jinjian Lu,Rui Han,Xiaoqing Jing,Yuyu Zhang,Jintao Wang,Ren Sheng,Ping Chen
Dual-site passivation via [VEIm]DCA: DCA − heals Pb 2+ defects, [VEIm] + stabilizes iodides. • Synergy triples PLQY (56%), aligns energy levels, and boosts mobility tenfold. • Deep-red QLEDs: 14.2% EQE at 684 nm and 2.8-fold lifetime gain. • Intramolecular ionic synergy: a new design principle for stable perovskites. Achieving high-efficiency and operationally stable deep-red perovskite quantum dot light-emitting diodes (QLEDs) is crucial for advanced optoelectronics but remains challenging, primarily due to the inherent trade-off between defect passivation and charge transport. Here, we propose a novel dual-site ligand engineering strategy using the ionic liquid 1-vinyl-3-ethylimidazolium dicyanamide ([VEIm]DCA) for CsPbI₃ quantum dots. This approach harnesses the intrinsic synergy within a single molecule: the DCA − anion heals iodine vacancies via coordination to under-coordinated Pb 2+ , while the [VEIm] + cation reinforces the lattice through a C–H···I hydrogen-bonding network. This synergistic action effectively passivates defects (tripling the film PLQY to 56%), optimizes energy level alignment, and enhances charge carrier mobility by over an order of magnitude. Consequently, the resulting deep-red QLEDs achieve a peak external quantum efficiency of 14.2% at 684 nm with a low turn-on voltage of 2.2 V. Notably, operational stability is substantially enhanced, with a T₅₀ lifetime of 64 min at 100 cd m −2 under ambient conditions—a ~ 2.8-fold improvement. This work establishes the synergistic anion-cation pair within a single ionic liquid as a highly efficient and streamlined design principle for harmonizing performance and stability in perovskite optoelectronics.
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APPLIED CATALYSIS B-ENVIRONMENTAL
·
2026
·
IF 19.7
Bin Chen,Xingwen Cha,Bo Jiang,Yicong Chen,Jian Tian,Dandan Song,Zhongliang Huang,Xiaodong Zhang,Jiale Huang,Qingbiao Li,Guowu Zhan
Synergistic glycerol-grease pyrolysis yields high aromatics and deoxygenation rate • Olefin-aldehyde coupling at acid sites reduces carbon loss and boosts aromatization • DFT proves coupling thermodynamically favored over conventional aromatization • Broad feedstock scope and LCA‑confirmed environmental benefits The inefficient valorization of crude glycerol, a major biodiesel byproduct, severely limits the carbon economy of biorefining. Herein, we report a catalytic co‑pyrolysis strategy that synergistically converts crude glycerol and waste grease into aromatics over a rice husk silica-derived Ni/ZSM-5 catalyst, improving carbon utilization. The synergy is driven by an olefin-aldehyde coupling pathway on the acid sites of ZSM-5, where glycerol‑derived propenal reacts with grease‑derived olefins to form readily aromatized cyclic intermediates, minimizing secondary cracking and redirecting carbon toward liquid aromatics. This achieves >85.0% aromatic selectivity with a space-time yield of 1.8 g arom ·h -1 ·g catal -1 , representing an eightfold enhancement over glycerol‑alone catalytic pyrolysis. This coupling mechanism is thermodynamically superior to the traditional Ni-mediated aromatization pathway. Its applicability to diverse fatty acids and real waste oils highlights broad feedstock adaptability. This work establishes a scalable carbon‑efficient route for aromatic production from wastes, offering lower carbon footprint and higher energy gain than conventional alternatives. Download: Download high-res image (233KB) Download: Download full-size image
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Laser & Photonics Reviews
·
2026
·
IF 9.7
Ke-Lei Zu,Hai-Liang Long,Ji-Xiong Zhao,Jun-Tao Hu,Deng-Ke Wang,Nan Chen,Yin-Fen Ma,Jian Xu,Jun-Liang Li,Qi Zhan,Feng Qiu,Bin Xu,Chang-Sheng Shi,Mei Leng,Yong-Biao Zhao,Zheng-Hong Lu
PbS colloidal quantum dots (CQDs) have attracted significant attention as light sources and photodetectors in the second near-infrared (NIR-II) window for optical communication, bioimaging, and night vision. Recently, a room-temperature direct synthesis of PbS CQD inks has been developed, enabling low-cost and large-scale fabrication of QD optoelectronic devices. However, the synthesis of high-quality large-sized CQDs with photoluminescence (PL) peaks beyond 1550 nm remains challenging. In this work, we developed a novel room-temperature cation-exchange synthesis strategy in a polar solvent system. Distinct from existing approaches, the strategy employs ZnS nanoseeds as the sulfur precursor, enabling tunable PL peaks in the range of 1050–1650 nm by precisely controlling the reaction kinetics. The in situ passivation by Zn cations and acetate anions effectively reduces surface defects on the nonpolar (100) facets. Based on this strategy, we fabricated near-infrared II (NIR-II) light-emitting diodes (LEDs) exhibiting a maximum radiance of 22.15 W sr −1 m −2 , together with a record-breaking critical current density for external quantum efficiency (EQE) roll-off ( J 1/2EQE = 3.4 A cm −2 ). Furthermore, NIR-II photodetectors demonstrate a high photoresponsivity of 0.68 A W −1 and a specific detectivity of 1.12 × 10 11 Jones at 1490 nm.
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Advanced Optical Materials
·
2026
·
IF 7.2
Xuan Li,Guowei Du,Huihui Cao,Yimin Zhou,Chenyang Li,Zicheng Wen,Zhihui Han,Fei Tang
All-inorganic phosphor composites have emerged as vital solutions for high-power solid-state lighting, circumventing the intrinsic thermo-chemical vulnerabilities and spectral instabilities of conventional polymer-encapsulated matrices. Here, we report self-supporting, ultrathin phosphor-glass composites (PGC) utilizing commercial Ca-α-sialon:Eu 2+ amber phosphors as the luminescent component. Leveraging tape-casting and low-temperature sintering, we achieve microscale control over composite thickness (117 µm) and phosphor distribution, while maintaining crystalline integrity and delivering a high internal quantum yield of 95.59%. Systematic tuning of phosphor loading reveals that photon transport—governed by multiple scattering and self-absorption—is the dominant limiter of apparent emission in the ultrathin regime, with an optimal loading identified at 20 wt.%. Furthermore, we engineer a dual-layer laminated architecture that spatially decouples light conversion from mechanical reinforcement and thermal buffering. This configuration effectively suppresses chromatic drift and improves luminous stability and efficiency retention under high-power excitation. Notably, the laminated PGC exhibit superior tensile strength, moisture resistance, and thermal dissipation without compromising luminescence performance. These results establish architecture-enabled ultrathin PGC as a promising photonic packaging platform for next-generation color-stable, high-power solid-state lighting.
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Science Advances
·
2026
·Vol. 12
·期 28
·
IF 13.9
Wenyan She,Xiaojuan Jiang,Siying Deng,Luyuan Hu,Chenxi Huang,Lin Hou
Diabetes mellitus remains a global health challenge, as current insulin-based therapies merely control blood glucose without restoring islet β cell function, leaving patients dependent on lifelong medication and vulnerable to hypoglycemia. Antioxidant drugs hold promise for islet β cell repair but are limited by poor gastrointestinal transportation and insufficient pancreatic targetability. Here, we initially identify ferroptosis-associated oxidative stress as a key cause of islet β cell death and develop six stiffness-gradient nanoparticles by embedding bent oleic acid into ordered 1,2-distearoyl- sn -glycero-3-phosphoethanolamine to enhance drug bioavailability. Nanoparticles with intermediate stiffness optimize membrane wrapping and minimize energetic cost, enhancing intestinal M cell transcytosis and macrophage-mediated hitchhiking, thereby increasing pancreatic curcumin accumulation by ~4.5-fold. In diabetic models, this formulation suppresses ferroptosis-associated oxidative stress, promotes in situ islet β cell repair, and restores insulin homeostasis and autonomous glycemic control, maintaining normoglycemia without hypoglycemia even after treatment cessation. This study represents a patient-friendly oral nanotherapy that outperforms insulin therapy in long-standing diabetes management.
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