ANALYTICAL AND BIOANALYTICAL CHEMISTRY
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2026
·
IF 4.1
Liang Hao,Liu Jingjing,Pei Hebing,Guo Ruibin,Mo Zunli,Liu Nijuan
Rapid detection of tryptophan (Trp) enantiomers has been a research hotspot in pharmaceuticals, life sciences, and related fields. Herein, N, S-doped carbon dots (N, S-CDs) and chiral ionic liquid (CIL) were used to functionalize the glassy carbon electrode (GCE), constructing a simple electrochemical sensor (N, S-CDs/CIL/GCE) for the efficient recognition of Trp enantiomers. CIL not only provides a chiral microenvironment but also synergistically amplifies electrochemical signals through electrostatic interactions with N, S-CDs, while enhancing interfacial electron transfer efficiency. Differential pulse voltammetry (DPV) analysis indicates that with an 8.0 μL loading volume and pH 6.0, the N, S-CDs/CIL/GCE achieves the maximum enantiomeric selectivity coefficient ( I L / I D = 2.12) for L-Trp versus D-Trp. Moreover, it exhibits excellent stability and shows high selectivity toward Trp enantiomers even in the presence of common interfering substances, with detection limits of 0.035 mM and 0.084 mM for L-Trp and D-Trp, respectively (1.5 to 3.5 mM). Mechanistic investigations suggest that the DPV signal difference may stem from the stereoselectivity of N, S-CDs/CIL toward tryptophan isomers, as its affinity for L-Trp is higher than for D-Trp. Furthermore, the N, S-CDs/CIL/GCE exhibits significant potential for distinguishing amino acid isomers in non-racemic mixtures. This study offers new insights into the development of chiral compound sensors and bioanalytical strategies. Graphical
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Advanced Optical Materials
·
2026
·
IF 7.2
Jiaqi Qi,Xuanfeng He,Haitao Jiang,Yuhuai Fei,Yinying Cheng,Jing Song,Cong Wang,Donglai Han
Tin-based perovskites are promising lead-free candidates for nonlinear optical applications, yet their performance and stability require further improvement. This work proposes a multi-step interface engineering strategy to markedly enhance the nonlinear optical response. A stable Cs 2 SnI 6 (S-Cs 2 SnI 6 ) film was first prepared via an improved in situ growth method, exhibiting an initial nonlinear absorption coefficient ( β ) of −4.12 × 10 −7 m W −1 . By replacing the conventional liquid crystal 4-Cyano-4’-pentylbiphenyl (5CB) with the π -conjugated liquid crystal 4-[(4-Pentylphenyl)iminomethyl]benzonitrile (5CNB), an S-Cs 2 SnI 6 @5CNB composite was obtained. The optimized interfacial interaction facilitated electron transfer, resulting in a significantly enhanced β value of 2.05 × 10 −6 m W −1 . Further incorporation of plasmonic gold nanoparticles (Au NPs) yielded the Au/S-Cs 2 SnI 6 @5CNB heterostructure. Benefiting from the localized surface plasmon resonance (LSPR) of Au NPs, the local electromagnetic field was substantially intensified, boosting β value to 6.94 × 10 −6 m W −1 , a 239% increase over the composite without Au and a 434% increase over the control without the perovskite. Z-scan measurements confirmed outstanding optical limiting with a low threshold of 0.072 J cm −2 . This study successfully demonstrates a synergistic enhancement strategy, paving the way for advanced optical limiters and nonlinear photonic devices.
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ACTA PHYSICO-CHIMICA SINICA
·
2025
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IF 13.5
Wenlong Wang,Wentao Hao,Lang He,Jia Qiao,Ning Li,Chaoqiu Chen,Yong Qin
S-scheme heterojunctions have garnered significant interest in photocatalytic CO 2 conversion to valuable products (e.g., CH 4 ) due to their enhanced charge separation and robust redox capabilities. Carbon dots (CDs), with their tunable band structures and light absorption ranges, show particular promise in constructing efficient S-scheme photocatalytic systems. Nevertheless, the critical roles of CDs' band alignment and surface adsorption properties in determining heterojunction configuration, charge carrier kinetics, and ultimately CO 2 activation/product selectivity distribution remain insufficiently explored. Herein, we construct four CDs/TiO 2 heterojunctions using CDs synthesized from varied carbon sources, in which S-scheme heterojunctions were successfully constructed based on cost-effective coal pitch (C-GQDs, 1.75 nm), glucose (G-CQDs, 1.84 nm), and acetone (CQDs-X, 1.82 nm) carbon sources, whereas Type-I heterojunctions were formed by carbon black based CDs (GQDs-A, 1.92 nm). Systematic investigations reveal that both the band structure and adsorption characteristics of CDs play important roles in the charge transfer path and separation efficiency, CO 2 adsorption and activation capacities, and product selectivity in photocatalytic CO 2 reduction. Remarkably, the introduction of CDs significantly broadens the photo-response range compared to fresh TiO 2 , and in particular, the C-GQDs/TiO 2 exhibits exceptional performance with a CH 4 production rate of 32.7 μmol·g −1 ·h −1 , surpassing TiO 2 by 6.3-fold and outperforming GQDs-A/TiO 2 , CQDs-X/TiO 2 , and G-CQDs/TiO 2 by factors of 3.8, 2.7, and 2.3, respectively. This heterojunction simultaneously achieves 72.6 % CH 4 selectivity and 98.1 % hydrocarbons selectivity (encompassing CH 4 , C 2 H 6 , C 2 H 4 , and C 3 H 8 ). In contrast, composites incorporating GQDs-A, CQDs-X, or G-CQDs exhibit substantially diminished CH 4 selectivity (<40.0 %). The high CH 4 production rate and selectivity of C-GQDs/TiO 2 can be attributed to its unique S-scheme heterojunction structure, higher reduction potential, and well-matched CO 2 and H 2 O adsorption and activation capabilities. This study provides unique insights into the efficient photoreduction of CO 2 to CH 4 driven by the S-scheme heterojunction electron transfer pathway in CDs/TiO 2 photocatalysts.
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APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Cheng Yang,Xinyue Yang,LiXun Feng,ZiJian Chen,Jia He,HuiTing Sui,Huajun Sun
Piezoelectric photocatalysis is emerging as a promising approach for green environmental protection. Herein, a molybdenum disulfide/graphitic carbon nitride S-scheme heterojunction catalyst achieved a Rhodamine B degradation rate exceeding 99 % within 30 min under the synergistic effects of light and ultrasound, along with a hydrogen (H 2 ) production rate of 16.2 mmol g −1 h −1 . The synergy of ultrasound and light improved catalytic efficiency by approximately 45 % compared with light alone. Experimental characterizations, including Kelvin probe force microscopy, in situ X-ray photoelectron spectroscopy, and density functional theory calculations, confirmed the presence of dual built-in electric fields arising from band alignment and strain-induced polarization. These fields facilitated efficient electron–hole separation, thereby greatly enhancing the overall piezoelectric photocatalytic performance and resulting in efficient use of mechanical and solar energy for H 2 production and pollutant decomposition.
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NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Rong Li,ZhiHui Hao,Xiangwei Zhao,Huilin Zhou,Zhimin He,Qin Dong,Wei Hong,Xinglong Gou
Metal sulfides, such as SnS2, have been extensively studied as separator modifiers in lithium–sulfur batteries (LSBs) owing to their dual functionality in chemically anchoring lithium polysulfides (LiPSs) and catalytically facilitating redox reactions. Nevertheless, poor electrical conductivity and limited catalytic efficiency restrict their practical implementation for LiPS transformation kinetics. To address these issues, we prepared Mo-doped SnS2 (Mo–SnS2) nanosheets with sulfur vacancies through a rapid one-pot formamide-assisted method. The incorporation of Mo heteroatoms not only improves conductivity but also induces favorable sulfur vacancies, synergistically promoting both adsorption and electrocatalytic conversion of LiPSs. The Li–S cell with a Mo–SnS2 nanosheet-modified separator delivers a remarkable initial capacity of 1007.5 mAh g−1 at 1C, maintains 799.5 mAh g−1 after 600 cycles with a low fading ratio of 0.034% per cycle, and demonstrates a favorable rate performance of 591.9 mAh g−1 at 5C. This defect engineering strategy through heteroatom doping offers a promising approach to concurrently mitigate the polysulfide shuttle effect and enhance the reaction kinetics in sulfur-based energy storage systems.
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Green Energy & Environment
·
2025
·
IF 14.6
Xiaoxia Ye,Bingqing Huang,Xueying Chen,Yaping Wang,Zhihong Zheng,Yifan Liu,Yuancai Lv,Chunxiang Lin,Jian Huang,Jie Chen
The extraction of uranium from seawater via membrane adsorption is a promising strategy for ensuring a long-term supply of uranium and the sustainability of nuclear energy. However, this approach has been hindered by the longstanding challenge of identifying sustainable membrane materials. In response, we propose a prototypal hybridization strategy to design a novel series of conjugated microporous polymer (CMPO)@collagen fiber membrane (COLM), as decorated with multiple functional groups through an amination. These sustainable and low-cost membrane materials allow a rapid and high-affinity kinetic to capture 90% of the uranium in just 30 min from 50 ppm with a high selectivity of K d > 10 5 mL·g -1 . They also afford a robustly reusable adsorption capacity as high as 345 mg·g -1 that could harvest 1.61 mg·g -1 of uranium in a short 7-day real marine engineering in Fujian Province, even though suffered from very low uranium concentration of 3.29 μg·L -1 and tough influence of salts such as 10.77 g·L -1 of Na + , 1.75 μg·L -1 of VO 3 - etc in the rough seas. The structural evidence from both experimental and theoretical studies confirmed the formation of favorable chelating motifs from the amino group on CMPN, and the intensification by the synergistic effect from the size-sieving action of CMPN and the capillary inflow effect of COLM.
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Molecular Catalysis
·
2025
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IF 4.9
Yaping Liu,Chao Pan,Xiaomin Qiu,Hailin Zhang,Haijun Feng,Yubao Tang,Zhijie Shang,Hongbing Song
The conversion of readily accessible chemicals into high-value-added products is a key process in industrial chemistry. This research showcases an efficient transformation of benzyl alcohol to benzaldehyde utilizing poly(ionic liquid)s (PILs) supported Pd-based catalysts. The catalyst’s properties were thoroughly characterized using FT-IR, SEM, TEM, XPS, and TG, confirming the successful fabrication of stable Pd/PILs catalysts. The porous architecture of the PILs material enhances palladium nanoparticle adhesion, while its structure promotes intimate contact between the catalyst and substrate, facilitating the oxidation process. With just 0.1 g of 1 % Pd/PIL-2 catalyst, the reaction at 110 °C, 4 MPa O 2 for 4 h achieve a 82.16 % conversion of benzyl alcohol with absolute selectivity to benzaldehyde. Theoretical calculations elucidated the interactions between Pd 6 clusters, PIL, and benzyl alcohol. Furthermore, the Fukui function and optimized electrostatic potential diagrams identified reactive sites, providing insights into the potential reaction mechanism.
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BIOMACROMOLECULES
·
2025
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IF 5.4
Pingge Jiang,Yaxuan Wang,Qiong Wu,Ziyue Wang,Chengfan Wu,Qi Shuai,Yunfeng Yan
Polymer-based nanocarriers hold promise for nucleic acid delivery, yet the clinical translation of mRNA polymeric carriers remains hindered by insufficient delivery efficiency and cytotoxicity. Here, we synthesized 180 diselenide-containing poly(β-amino ester)s (PBAEs) via Michael addition. In vitro screening identified PBAEs with superior mRNA delivery efficiency, showing that hydrophobic amine backbones with ionizable cationic amine end-capping are critical. The effective mRNA-PBAE polyplex nanoparticles (PNPs) exhibited moderate positive charge, suitable size, potent cellular uptake, and endosomal escape. Compared with analogs lacking diselenide bonds, diselenide-containing PBAEs demonstrated robust redox responsiveness and formed PNPs with similar mRNA binding and size, but reduced internal hydrophobicity and improved cellular uptake, mediating potent mRNA delivery. Tail vein injection of diselenide-containing PNPs achieved robust splenic-targeted delivery in mice without helper lipids, unlike the lung-targeted delivery of conventional PBAEs. These findings highlight a novel diselenide-containing PBAE platform for effective mRNA delivery, which has great potential in mRNA-based immunotherapeutic applications.
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PubMed
高影响因子
POLYMER
·
2026
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IF 5.1
Bing Yuan,Luyao Tian,Jingze Bai,Yu Zhang,Yingyuan Peng,Jing Cui,Zhi Fan,Minjie Guo,Yingcheng Li,Bowen Cheng
High refractive index polyimides for optical communications frequently face the challenge of balancing high refractive index with high transparency. In this study, a diamine monomer, 2,2′-bistrifluoromethoxy-1,1′-biphenyl-4,4′-bisaminobenzamide (ABTFMOB), which features both amide bonds and –OCF 3 groups, was designed and synthesized. Based on this monomer, a series of fluorinated poly(amide imide)s (FPAIs) with dense hydrogen bonding networks were synthesized. Among them, FPAI1, obtained through the polycondensation of ABTFMOB and 3,3′,4,4′-biphenyltetracarboxylic acid dianhydride, exhibited the most outstanding overall properties, including high thermal stability ( T g = 370 °C), excellent mechanical performance (tensile strength >200 MPa), high optical transparency (transmittance >80% at 450 nm), and a remarkably high refractive index (1.814 at 1550 nm). The refractive index of FPAI1 significantly exceeds that of most commercial optical polymers, which could be attributed to: (1) the dense hydrogen bonding networks, which effectively reduce the intermolecular chain distance and increase the chain packing density, thereby minimizing free volume; and (2) the rotational freedom of the –OCF 3 groups, which enhances molecular conformational adaptability and further optimizes chain packing. Moreover, by copolymerizing ABTFMOB with 2,2′-bistrifluoromethoxy-biphenyl-4,4′-diamine, a diamine monomer without amide bonds, and adjusting their molar ratio to modulate the hydrogen bonds density, a continuously tunable refractive index (1.699 to 1.814 at 1550 nm) was achieved while maintaining high transparency and thermal stability. This study provides a valuable design strategy for high refractive index polymers for optical communication applications.
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Solar RRL
·
2026
·Vol. 10
·期 1
·e202500927
·
IF 4.7
Yu Li,Guo Lu,Jieyu Zheng,Jie Chen,Shuaibing Wang,Mengmeng Ma,Zhijie Wang,Aiwei Tang
Ensuring broad-spectrum visible-light absorption and efficient electron extraction is essential for enhancing the efficiency of photocatalytic hydrogen production. To achieve this, manipulating carrier dynamics through cocatalyst heterojunction engineering has attracted considerable concern. However, conventional narrow-bandgap Cu–In–Zn–S (CIZS) nanocrystals (NCs) typically exhibit limited photocatalytic activity due to severe exciton annihilation. Herein, two-dimensional (2D) CIZS nanobelts (NBs) were coupled with Ni 9 S 8 cocatalyst to construct a library of CIZS/Ni 9 S 8 Schottky heterojunctions synthesized via a combined colloidal one-pot and hot-injection strategy. As anticipated, the CIZS/2.0%Ni 9 S 8 heterojunction displayed the optimal photocatalytic hydrogen evolution activity of 2.75 mmol g −1 h −1 , ≈3.31 times higher than that of pristine CIZS NBs (0.83 mmol g −1 h −1 ). Experimental results uncovered that the enhanced photocatalytic performance originated from the formation of the CIZS/2.0%Ni 9 S 8 Schottky heterojunction, which facilitated efficient charge transfer from CIZS NBs to Ni 9 S 8 and hindered the return of electrons. Moreover, Ni 9 S 8 serves as active catalytic sites, significantly accelerating surface proton reduction reactions. This study provides valuable insights into the rational design and precise synthesis of colloidal multinary Cu-based chalcogenide heterojunctions for efficient photocatalytic energy conversion.
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LIFE SCIENCES
·
2026
·
IF 5.1
Pan Huang,Kexin Zhang,Ying Chen,Jiaxin Cheng,Shuangshuang Yang,Lin Shi,Yajuan Wang,Qin Zhang
Elevated homocysteine (Hcy) is an independent risk factor for hypertension, and kidney is an important organ for Hcy metabolism and blood pressure regulation, and its damage is closely related to the process of hypertension. Recent evidence suggests that ferroptosis, an oxidative stress-related form of cell death, contributes significantly to hypertensive organ damage. However, whether Hcy aggravates renal injury in H-type hypertension by destroying renal hydrogen sulfide (H 2 S) metabolism and driving ferroptosis is still lack of direct evidence. In this study, the H-type hypertensive rat model induced by high methionine diet combined with HK-2 cell model was studied. We observed a significant increase in blood pressure and plasma Hcy in the Hcy group, accompanied by renal dysfunction and renal tubular injury. Specifically, in the renal tissue of Hcy group rats, the levels of KIM-1, Fe 2+ and malondialdehyde (MDA) were increased, glutathione/glutathione disulfide (GSH/GSSG) ratio decreased, SLC7A11 expression was down-regulated, and GPX4 activity was inhibited. Concurrently, H 2 S levels and cystathionine-beta-synthase (CBS) activity were decreased. In vitro experiments using HK-2 cells confirmed that Hcy could down-regulate the expression of CBS, cystathionine-gamma-lyase (CSE), SLC7A11, GPX4 and GSH/GSSG ratio, and up-regulate MDA and reactive oxygen species (ROS) levels. Treatment with H 2 S donor (NaHS) or ferroptosis inhibitors (Ferrostatin-1, Fer-1) could rescue these changes. Collectively, our results demonstrate that high Hcy promotes hypertension by suppressing endogenous H 2 S generation, downregulating the SLC7A11/GPX4 signaling axis, and inducing ferroptosis. These findings reveal a new mechanism by which Hcy aggravates hypertension by inhibiting H 2 S synthesis and inducing ferroptosis.
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Green Energy & Environment
·
2026
·
IF 14.6
Chunxia Wang,Yanxin Sun,Zhuo Wang,Yifeng Zeng,Qin-Yi Li,Xinchen Kang,Guoyong Huang
Copper (Cu) doping modifies the band structure of TiO 2 by slightly narrowing the bandgap and shifting the Fermi level, while creating localized states that serve as temporary electron reservoirs to suppress carriers rapid recombination. On this basis, a ternary heterojunction Cu-TiO 2 /g-C 3 N 4 (Cu-CT) was constructed by anchoring Cu-TiO 2 onto g-C 3 N 4 nanosheets. The synergistic interaction between Cu-doping and the S-scheme interfacial configuration generates an internal electric field that promotes vectorial carrier migration, enabling electrons in the conduction band of Cu-TiO 2 and holes in the valence band of g-C 3 N 4 . This spatial separation preserves strong redox potentials and markedly suppresses recombination. Consequently, Cu-CT achieves a hydrogen evolution rate of 10.21 mmol g -1 h -1 , more than twenty times higher than pristine TiO 2 . In-situ XPS, KPFM, and DFT analyses collectively validate the S-scheme charge-transfer pathway and highlight the synergistic role of Cu doping with heterojunction engineering, providing mechanistic insights to the rational design of advanced ternary photocatalysts for efficient solar-driven hydrogen production.
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