Nature Communications
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2026
·
IF 18.1
Zhang Zhenlin,Yan Lang,Li Weiwei,Hu Jinyan,Wang Yang,Dou Hongjing,Pan Dengyu,Shen Longxiang,Shi Sheng,Geng Bijiang
In the development of clinically translatable triplet photosensitizers for hypoxia regulated photodynamic therapy (PDT), there is an unmet need for engineering sensitizers as near-infrared (NIR)-responsive, type I/type Ⅱ dual photosensitizers and mild photothermal agents. Herein, we develop a binary precursor-engineering strategy for precise regulation of the D-π-A configuration of carbon dots (CDs) as ultralong-lived triplet, type I/Ⅱ dual photosensitizers by utilizing phenolic hydroxyl as an electron-rich donor and pyridine N as an electron-withdrawing acceptor. The photodynamic performance of CDs is enhanced by intramolecular charge transfer and mild photothermal conversion. We further design M1-like macrophage-derived cell membrane‑camouflaged CDs to realize preferential tumor accumulation while guaranteeing rapid systemic clearance. D-π-A sensitized CD-mediated PDT induces anti-tumor activity against primary and distant tumors. Our work highlights the crucial roles of D-π-A sensitization of CDs in boosting PDT by triplet state tuning, surface charge transfer, and mild photothermal relief of hypoxia.
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高影响因子
SOLID STATE SCIENCES
·
2026
·
IF 3.6
Yingxia Ma,Shuo Zhou,Tianze Li,Miaoshi Li,Wenhui Han
A superparamagnetic Fe 3 O 4 @Zn-AST nanocomposite was constructed. • The Fe 3 O 4 @Zn-AST had abundant N, S-containing functional groups. • The Fe 3 O 4 @Zn-AST exhibits a saturation magnetization of 61.29 emu/g. • The maximum adsorption capacity of Fe 3 O 4 @Zn-AST for Ag(I) was 1410.68 mg/g. Silver as a precious metal, is extensively utilized in jewelry, electronics and some other fields due to its excellent conductivity and ductility. With the growing demand for silver, excessive exploitation of silver ore resources has generated large volumes of Ag(I)-containing wastewater. The direct release of untreated Ag(I)-containing wastewater contaminates ecosystems and poses risks to human health. Metal-Organic Frameworks (MOFs) exhibit a notably specific surface area, ample unsaturated metal sites, ease of functionalization, and tunable pore size and structure, which make them highly promising materials for effective adsorption of pollutants from wastewater. However, pure MOFs are typically in powder form, which are not easy to separate and recover after adsorption. In this work, using the zinc nitrate hexahydrate as the metal precursor along with 2-amino-5-sulfanyl-1,3,4-thiadiazole (AST) as the multi-dentate organic ligand, a superparamagnetic Fe 3 O 4 @Zn-AST nanocomposite was prepared via in-situ solvothermal method. The Fe 3 O 4 @Zn-AST exhibits a saturation magnetization of 61.29 emu/g, meeting the requirements for magnetic separation. The maximum Ag(I) adsorption capacity of Fe 3 O 4 @Zn-AST is 1410.68 mg/g, and adsorption process is mainly chemical adsorption, featured by endothermic, disordered, and spontaneous. Adsorption-desorption experiments prove that the removal efficiency can remain above 91% even after five cycles. From FT-IR and XPS, the Fe 3 O 4 @Zn-AST adsorbing Ag(I) was mainly through the synergistic effect of -SH, N-containing functional groups and electrostatic interactions. Given the magnetic separation advantage and superior Ag(I) adsorption, Fe 3 O 4 @Zn-AST could serve as a promising adsorbent. Download: Download high-res image (241KB) Download: Download full-size image
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ELECTROCHEMISTRY COMMUNICATIONS
·
2025
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IF 4.2
Fang Liu,Yingying Gao,Ying Guo,Jianchun Li,Wei Huo,Weiwei Dai
Cardiac troponin I (cTnI) detection plays a critical role in the early diagnosis of acute myocardial infarction (AMI). In this study, a sandwich-type electrochemical immunosensor was developed for ultrasensitive quantification of cardiac troponin I (cTnI). The sensor platform utilized silver nanoclusters (AgNCs) incorporated with β -cyclodextrin functionalized 3D porous graphene ( β -CD@3DG-AgNCs) to enhance electrical conductivity and primary antibody (Ab 1 ) immobilization. For signal amplification, ferrocenecarboxylic acid combined with β -CD@3DG ( β -CD@3DG-Fc-COOH) was employed as the signal probe, which demonstrated excellent secondary antibody (Ab 2 ) capture capability. The synthesized nanomaterials were characterized using SEM, TEM, FTIR spectroscopy, X-ray Photoelectron Spectroscopy (XPS) and Thermo-Gravimetric Analysis (TGA). The electrochemical performance of the surface-modified electrodes was systematically investigated through cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). Under optimized conditions, differential pulse voltammetry (DPV) revealed that the developed sensor exhibited an extensive linear response range (100 fg mL −1 –100 ng mL −1 ) for cTnI quantification, with an exceptionally low detection limit of 45.5 fg mL −1 . The recovery rate ranging from 97.39% to 102.83% was achieved in human serum analysis, suggesting the potential applicability of this immunosensor for clinical diagnosis.
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ANTIVIRAL RESEARCH
·
2026
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IF 4
Yarong Song,Yitong Zeng,Han Zheng,Shu Shi,Zhongqing Li,Mingchen Liu,Sijin Shao,Ziheng Luo,Yurong Li,Jie Li,Kuanhui Xiang,Jie Wang
Chronic hepatitis B virus (HBV) infection is a major global health problem. Currently, existing antiviral drugs are difficult to achieve a functional cure for chronic hepatitis B (CHB). Therefore, it is necessary to develop new antiviral targets, especially those that can directly target HBV covalently closed circular DNA (cccDNA) in hepatocytes. Here, we identified a conserved SOX6 binding site in the enhancer I (ENI) region of the HBV genome, and found that SOX6 promotes the replication of multiple genotypes HBV through its HMG domain. Mechanistically, SOX6 binds to the conserved binding site located in the HBV ENI region through its HMG domain, thereby promoting HBV replication by enhancing the transcriptional activity of ENI. Moreover, cisplatin and doxorubicin not only promote HBV replication but also promote SOX6 expression. Knocking down the expression of endogenous SOX6 or mutating the SOX6 binding site in the HBV ENI region significantly weakens the direct promoting effect of cisplatin and doxorubicin on HBV replication. In summary, SOX6 promotes HBV replication by enhancing the transcriptional activity of HBV ENI through its HMG domain, suggesting that it can serve as a potential target for regulating HBV cccDNA transcription. In addition, SOX6 participates in the direct promotion of HBV replication by cisplatin and doxorubicin, providing new insights into the molecular mechanisms of tumor chemotherapy related HBV reactivation (HBVr) and potential targets for the prevention of HBVr during tumor chemotherapy.
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Russian Journal of Physical Chemistry A
·
2026
·Vol. 99
·期 13
·3279-3287
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IF 0.8
Hao Lv,Zheng Dan,Liu Xiyue,Li Luyun,Tan Jingjing,Xing Bo
This paper focuses on the preparation, structural characterization, and property investigation of the copper(I) complex [Cu(dppe)(phon)]I based on 1,2-bis(diphenylphosphino)ethane. The target complex was synthesized via a solution method, using 1,2-bis(diphenylphosphino)ethane, cuprous iodide, and 1,10-phenanthroline-5,6-dione as raw materials and acetonitrile as the solvent. It was then characterized by infrared spectroscopy (IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet-visible spectroscopy (UV–Vis), and fluorescence spectroscopy. Methylene blue was used to simulate dyeing wastewater, and the single-factor method was employed to study the effects of the initial concentration of methylene blue, illumination time, complex dosage, and temperature on the- efficiency. The results indicated that the optimal photocatalytic degradation performance was achieved at a relatively low initial concentration of methylene blue, an appropriate complex dosage (25 mg), and a temperature of 40°C. Additionally, the copper(I) complex was utilized as a phosphorescent probe for the detection of tetracycline hydrochloride, doxycycline hydrochloride, and chlortetracycline hydrochloride. It was found that the addition of tetracycline antibiotics led to a decrease in the fluorescence intensity of the complex, and the higher the concentration of the antibiotics, the stronger the quenching effect. The detection limit of the phosphorescent probe for tetracycline hydrochloride antibiotics was 3.0 × 10 –9 mol/L. This study provides a theoretical basis and practical reference for the application of copper(I) complexes in photocatalytic degradation and tetracycline detection.
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CHEMICAL RESEARCH IN CHINESE UNIVERSITIES
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2026
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IF 4.7
Gao Yuxuan,Kong Qiyu,Wang Jun,Sun Fengwei,Liu Xinyu,Wang Deliang,Li Jiangao,Yang Zhen
Developing organic type I photosensitizers (PSs) that generate less oxygen-dependent reactive oxygen species (ROS) has long been recognized to be an appealing yet significantly challenging task in the field of photodynamic therapy (PDT), owing to the high oxygen dependency of conventional PDT, which impairs its overall therapeutic efficacy, particularly in hypoxic solid tumors. Herein, a molecular fluorination strategy to finely regulate PSs with bright near-infrared (NIR) fluorescence and superior type I ROS generation ability was exploited. Benefited from the improved donor-acceptor interaction, promoted intersystem crossing process, and increased spin-orbit coupling (SOC) constant, the optimal TIBT-5F simultaneously exhibits broad absorption with a larger molar extinction coefficient in the visible-light region, bright NIR fluorescence emission and stronger type I ROS generation efficiency, making TIBT-5F a promising candidate for precise NIR fluorescence-guided PDT. The as-prepared TIBT-5F nanoparticles (NPs) can quickly accumulate in the tumor site, effectively produce both type II and type I ROS and prominently suppress the tumor growth under a safe white light irradiation (40 mW/cm 2 ) with minimized systemic toxicity. This study thus offers a new insight into constructing advanced type I PSs for precise fluorescence imaging-guided tumor theranostics.
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INORGANIC CHEMISTRY
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2026
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IF 4.6
Siqi Wang,Jiawang Liu,Meiting Chen,Xueqi An,Shuang Guo,Zihui Liang,Ping Wang,Yinghui Wang,Xiaotian Yang
Semiconductor quantum dots (QDs) are attractive building blocks for photocatalytic hydrogen evolution because their optical and electronic properties can be tailored through nanoscale structural design. However, in many QD-based hybrid systems, limited interfacial coupling between the QDs and cocatalyst hinders charge transfer and obscures the relationship between the interfacial structure and function. Herein, we report a Ni-modified giant reverse type-I CdS/CdSe core/shell QD system prepared by photodeposition, in which the Ni loading can be quantitatively tuned from 1 to 7 atoms per QD. Structural and spectroscopic characterizations indicate that the deposited Ni species are intimately associated with the CdS/CdSe QDs, while the giant core/shell architecture is retained. This interfacial modification leads to systematic changes in charge-carrier behavior, as evidenced by photoluminescence, photocurrent, electrochemical impedance, transient photovoltage, and transient absorption measurements. Among the series, CdS/CdSe-Ni4 exhibits the most efficient visible-light-driven hydrogen evolution, with a rate of 4492 μmol g–1 h–1 and a turnover frequency of 2.6 s–1 per Ni site. The results show that the regulation of the QD/Ni interface plays an important role in promoting electron extraction and interfacial charge transfer. This study provides a useful model for understanding how surface metal-site modification influences the photophysical and photocatalytic properties of colloidal semiconductor core/shell nanostructures.
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Journal of Materials Chemistry A
·
2023
·Vol. 11
·期 20
·10766-10775
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IF 11.9
Nan Zou,Jie Chen,Ting Qiu,Ying Zheng
Direct hydrogenation of CO2 to ethanol is a highly economical carbon reduction strategy. However, the CO2 hydrogenation process traditionally requires high temperatures, typically higher than 300 °C, to activate CO2 molecules, which is unfavorable to the formation of ethanol. In contrast, we applied the novel non-thermal plasma to activate CO2 at ambient conditions and a Cu(I)-MOF catalyst to selectively synthesize ethanol for the selective transformation of CO2 into ethanol. The best catalyst, Cu(I)-HKUST-17.5, achieved 41.2% CO2 conversion and up to 62.9% ethanol selectivity under ambient conditions. The control experiments indicated that the Cu(I) sites are key to realizing C–C coupling and ethanol synthesis. An unreported synergistic catalytic mechanism between non thermal plasma and the Cu(I) and Cu(II) sites on the catalyst is proposed based on the DRIFTS analysis. Overall, our work confirms the feasibility of utilizing non thermal plasma assisted catalysis for the selective conversion of CO2 to ethanol under mild conditions.
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JOURNAL OF MOLECULAR LIQUIDS
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2022
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IF 6.633
Pengshuai Zhang,Haiyan Luo,Lan Cui,Jixiu Deng,Shiyu Xie,Danfeng Liu,Shuqi Wang,Xiaoying Si,Zichao Wang,Yameng Wan,En Zhang,Xing Li,Lu Zhang
Solid-liquid equilibrium solubility of artemisinin (ART) Form I in twelve mono-solvents namely N, N-dimethylformamide (DMF), oxolane (THF), n -propanol (NPA), 4-methylpentan-2-one (MIBK), ethyl formate (EF), butyl acetate (BAC), 2-ethoxyethanol (EGEE), 1,4-Dioxane, 2-methoxyethanol (EGME), 2-propoxyethanol (EGPE), propyl acetate (NPAC) and 2-butoxyethanol (EGBE) from 283.15 K to 323.15 K were determined by a laser dynamic method under 0.1 MPa. The minimum solubility of ART (Form I) was found in NPA at 283.15 K (0.004541), the maximum mole fraction solubility of ART (Form I) was observed as 0.2523 in DMF at 323.15 K. At the temperature of 298.15 K, the experimental mole fraction solubility order of ART Form I in the tested solvents was DMF (0.1559) > 1,4-Dioxane (0.09117) > THF (0.08301) > MIBK (0.05054) > EF (0.04902) > NPAC (0.03860) > BAC (0.03658) > EGME (0.02031) > EGEE (0.01859) > EGPE (0.01817) > EGBE (0.01689) > NPA (0.007185). The solubility behavior was computationally correlated by Margules model, Wilson model, NRTL model, NRTL-SAC model, Buchowski-Ksiazczak λh model and UNIQUAC model, the total RMSD was no>0.025 in the selected models. With the help of Hansen solubility parameters (HSPs) analysis, molecular similarities of ART (Form I) in twelve mono-solvents were investigated. Besides, Hirschfeld surface analysis (HSs) was considered to evaluate the intermolecular interaction of artemisinin. Moreover, thermodynamic properties including Δ mix H , Δ mix G , Δ mix S , lnγ 1 , l n γ 1 ∞ of ART (Form I) in the selected solvents were estimated. All the negative Δ mix G and positive Δ mix S values indicated that the mixing process were spontaneous and entropy-increasing.
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JOURNAL OF COORDINATION CHEMISTRY
·
2022
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IF 1.869
Chengjie Gao,Zhenzhou Sun,Ning Zhu,Hongliang Han,Zhongfeng Li,Chaoyue Gu,Yuping Yang,Xiulan Xin,Qiming Qiu,Wei Yang,Guo Wang,Qionghua Jin
Two new complexes, [Cu(dmp)(2-bdppmapy)](CF3SO3)·CH2Cl2 (1) and [Cu(imidazo[4,5-f])(2-bdppmapy)](SCN) (2) (2-bdppmapy = N,N-bis[(diphenylphosphino)methyl]-2-pyridinamine, dmp = 2,9-dimethyl-(1,10)phenanthroline and imidazo[4,5-f] = 1H-imidazo[4,5f][1,10]phenanthroline), have been synthesized in mixed solvents of CH3OH and CH2Cl2 (1:1, V/V). On the basis of studying the structure and photophysical properties of the Cu(I) complexes, the effects of different N ligands and counter anions on the luminescence properties of the Cu(I) complexes were characterized by single-crystal X-ray diffraction, fluorescence spectra and terahertz time-domain spectroscopy (THz-TDS). The research shows that 1 exhibits excellent photoluminescence quantum yields. It is ascribed to the unique stacked structure. In addition, the relationship between the multiple weak forces, structure, and photophysical properties of the complexes was investigated.
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RSC Advances
·
2022
·Vol. 12
·期 55
·36012-36017
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IF 4.036
Ya Di,Jiyao Zheng,Yunwang Zhao,Zikai Yang,Changshun Xie,Jiahan Yu,Yue Zheng,Liming Gao
In this work, a novel strategy of colorimetric and photothermal dual-mode sensing determination of ascorbic acid (AA) based on a Ag+/3,3′,5,5′-tetramethylbenzidine (TMB) system was developed. In this sensing system, Ag+ could oxidize TMB with a distinct color change from colorless to blue color, strong absorbance at 652 nm and a photothermal effect under 808 nm laser irradiation due to the formation of oxidized TMB (oxTMB). When AA was present, oxTMB was reduced accompanied by a change from blue to colorless, and a decrease in absorption peak intensity and the photothermal effect. AA concentration showed a negative linear correlation with the value of both the absorbance intensity at 652 nm and temperature in the range of 0.2–10 μM (A = −0.03C + 0.343 (R2, 0.9887; LOD, 50 nM); ΔT = −0.57C + 8.453 (R2, 0.997; LOD, 7.8 nM)). Based on this, a sensing approach for detection of AA was proposed with dual-mode and without the complicated synthesis of nanomaterials. The photothermal effect and colorimetric signal provided a dual-mode detection strategy for AA, overcoming the limitations of any single mode. This colorimetric and photothermal dual-mode detection has great potential in the detection of AA in clinical pharmaceuticals and the construction of portable and highly sensitive sensors.
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Journal of Materials Chemistry C
·
2023
·Vol. 12
·期 4
·1386-1395
·
IF 6.4
Wang Fu,Wuqi Liu,Yaju Wei,Dan Liu,Songyu Li,Di Zhao,Xiaoping Wu,Lingbo Xu,Ping Lin,Can Cui,Xuegong Yu,Peng Wang
In studies addressing contact recombination, carrier-selective contacts (CSCs) have played a key role in crystalline silicon (c-Si) solar cells resulting in a higher photoelectrical conversion efficiency (PCE). Recently, wide-bandgap metal compound materials with extreme work functions or suitable energy band alignment have drawn considerable interest for CSC materials. Among them, cuprous iodide (CuI) is a very promising hole-selective layer, however, very little research has been conducted for c-Si solar cells. In this work, we have demonstrated that solution-processed CuI films act as effective full-area hole-selective contact layers for p-Si solar cells. Moreover, iodine (I2) doping suppresses the generation of I− vacancies (VI), and enhances the film conductivity due to an increase in copper vacancies (VCu). Aluminum ion (Al3+) doping further promotes the generation of more VCu and increases the work function of the CuI film. The proposed I2 and Al3+ co-doping strategy for CuI films significantly improves the passivating contact performance of the Al3+–I2:CuI/p-Si heterojunction, contributing to the significantly improved PCE from 15.12% to 18.28%, which is the highest for solution-processed copper-based hole transport layers for c-Si solar cells to date. The results demonstrate the great potential of the CuI hole-selective layer applied for highly efficient c-Si solar cells.
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