Materials Today Communications
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2026
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IF 4.9
Yong Wu,Jin Gui Li,Cheng Ming Zhang,Zi Fu Cai,Cun Chen,Zhi Xing Cao,Rui Zeng
Background The relationship between structural variations of polysaccharides and their physiological roles remains unclear. Monosaccharide composition influences their antioxidant activity, potentially linking to blood glucose regulation and microbiome modulation. Methods This study focused on Rosa roxburghii Tratt polysaccharide (RP) and Brasenia schreberi polysaccharide (BP). Fractions BSP-40, BSP-60, RRTP-40, and RRTP-60 were prepared, and their structure-function relationships were analyzed via in vitro assays and animal intervention experiments. Results RRTP-40/60 were rich in galacturonic acid and glucose, while BSP-40/60 mainly contained glucose and mannose. RRTP-60 and BSP-40 exhibited a Congo red binding pattern characteristic of a triple helix, unlike RRTP-40 and BSP-60. Polysaccharide administration reduced fasting blood glucose by 24.44% (RP group), 27.56% (RP-BP group), and 29.65% (BP group), decreased triglyceride (TG) and malondialdehyde (MDA) levels, improved hepatic cell morphology, and reduced inflammatory markers. Specifically, the abundance of Muribaculaceae has significantly increased. This bacterial family has been reported to exhibit increased abundance in health interventions and is believed to exert a positive influence on host metabolism through pathways such as the production of short-chain fatty acids, while harmful Lachnospiraceae decreased. Monosaccharide composition correlated significantly with intestinal microbiota. Conclusion The monosaccharide composition and conformational features affect their regulatory effects on blood sugar and the gut microbiota.
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Russian Journal of Physical Chemistry A
·
2026
·Vol. 100
·期 7
·1360-1365
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IF 0.7
Xiaoru Pan,Kong Xiangyan,Li Dan
In this experiment, the viscosities and densities of binary systems consisting of cyclohexene oxide with 1-butanol, 1-pentanol, 1-hexanol, 1-heptanol were measured at different temperatures ranging from 298.15 to 313.15 K. Based on these data, excess molar volumes and viscosity deviations were calculated. The excess properties were correlated using the Redlich–Kister equation.
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Science China-Chemistry
·
2026
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IF 9.8
Fang Pengda,Yuan Han,Zhou Tao,Yuan Yongjiang,Zhang Jiale,Zhang Qiuhuan,Zhang Hao,Yu Qikun,Sun Zhe,Yan Feng
Anion exchange membrane fuel cells (AEMFCs), recognized as a cost-effective solution for hydrogen energy utilization, have been extensively investigated in thousands of research articles. However, the performance of the anion exchange membranes (AEMs) under operating conditions still falls short of practical requirements. The challenge resides in the current emphasis on analyzing the intrinsic properties of AEMs without explicitly linking these properties to the performance of terminal devices. We developed a comprehensive machine learning model for predicting and optimizing AEMFC power density, encompassing AEM properties, catalyst layer composition, and operating conditions. Having learned from extensive experimental data, the model demonstrates generalization capability, accurately predicting performance for unseen data with an overall error rate below 10%. By implementing the data-driven optimization strategy recommended by the model, the power density of AEMFCs improved by up to 20%. This approach effectively links material-level characteristics to system-level performance, offering a novel perspective on precision-oriented and systematic energy materials innovation.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2026
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IF 19.7
Pengfei Li,Yang Deng,Zhinan Xia,Ruijuan Bian,Nianbo Zhang,Yu Zhang,Xu Wu
A series of COFs with different degrees of in-plane electron asymmetry distribution were successfully constructed. • NS-COF exhibits the strongest in-plane and intramolecular asymmetric polarization and donor-acceptor interactions. • Strongest local asymmetric electron distribution builds side-on Yeager-type O 2 bonding sites with enhanced adsorption. • NS-COF achieves outstanding H 2 O 2 photosynthesis of 7882 μmol·g −1 ·h −1 in pure water and air without sacrificial agents. Conventional photocatalysts generally rely on optimizing charge-transfer processes or specific oxygen activation pathways, while the molecular-level regulation of coupled excited-state and oxygen activation processes remains challenging. Simultaneously regulating charge-transfer and energy-transfer-related oxygen activation processes within a photocatalyst remains a significant challenge. Herein, we present a targeted strategy to finely tailor the asymmetric electron distribution of covalent organic framework (COF) to regulate charge-transfer and energy-transfer-related oxygen activation processes for superior H 2 O 2 photosynthesis. The results reveal that NS-COF regulates excited-state behavior and electron transport dynamics through linkage-controlled electronic modulation. The enhanced in-plane polarization promotes spin-state conversion and intersystem crossing (ISC), facilitating efficient triplet-state generation and energy-transfer-related oxygen activation. Furthermore, the lone-pair electrons of heteroatoms can partially delocalize onto the aromatic backbone, modulating the HOMO and LUMO energy levels and facilitating charge-transfer processes. Additionally, the enhanced local asymmetric electron distribution in NS-COF creates a polarized microenvironment that favors O 2 adsorption in a Yeager-type configuration with strengthened interaction. Upon electron injection, this adsorbed O 2 generates surface-bound •O 2 - species, which undergo subsequent protonation to form *OOH intermediates, thereby promoting the stepwise two-electron oxygen reduction pathway (O 2 → •O 2 - → *OOH → H 2 O 2 ), while also enabling an energy-transfer-related oxygen activation process involving 1 O 2 generation and subsequent H 2 O 2 formation (O 2 → 1 O 2 → H 2 O 2 ). These complementary processes collectively contribute to the enhanced H 2 O 2 production activity, resulting in a superior H 2 O 2 production rate of 10885 μmol g cat. −1 h −1 in pure water and oxygen. The feasibility of regulating complementary charge-transfer and energy-transfer-related excited-state processes provides new perspectives for photocatalysis, optoelectronic devices, and energy storage. Download: Download high-res image (290KB) Download: Download full-size image
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
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IF 9.6
Di Shen,Jianhao Ding,Yuhang Tan,Yujie Wen,Xinning Wang,Xiankan Zeng,Maolin Mu,Chenglong Li,Jingjing Cao,Xiaoqiang Fan,Weiqing Yang,Wen Li
TrTPFB is successfully introduced as a fluorinated ionic molecule into FAPbBr₃ PeQDs. • Multi-site interactions stabilize the PeQD surface and suppress nonradiative recombination. • TrTPFB induces p-type modulation, reducing interfacial charge accumulation. • Threefold enhancement in T₅₀ lifetime highlights improved device stability. Perovskite quantum-dot light-emitting diodes (PeQLEDs) remain limited by coupled surface and interfacial losses: labile ligand binding produces trap-rich perovskite quantum dot (PeQD) surfaces while unbalanced carrier injection accelerates interfacial charge accumulation and nonradiative recombination. Here, triphenylmethylium tetrakis(pentafluorophenyl)borate (TrTPFB) is introduced as a fluorinated ionic molecule to synergistically regulate both the surface coordination and charge-injection behavior of FAPbBr₃ PeQDs. Density functional theory (DFT) calculations reveal pronounced charge redistribution between TrTPFB and the PeQD surface. Experimental results show that the fluorinated tetrakis(pentafluorophenyl)borate (TPFB − ) anion and the positively charged triphenylmethylium (Tr + ) cation cooperatively stabilize the surface coordination environment and suppress trap-mediated nonradiative recombination. TrTPFB also induces p-type electronic modulation of the PeQD film, shifts the Fermi level toward the valence band, lowers the hole-injection barrier, and mitigates interfacial charge accumulation. Consequently, The combined operation of these mechanisms significantly improves the photoluminescence quantum yield (PLQY) of perovskite films to an impressive 98.50%. The corresponding green PeQLED achieves a peak external quantum efficiency of 17.50%, a maximum luminance of 80,859.28 cd m −2 , and an approximately threefold increase in the average T₅₀ lifetime compared with the control device. This work establishes a fluorinated ionic molecular strategy that integrates surface passivation and charge-injection regulation for efficient and stable PeQLEDs. Download: Download high-res image (115KB) Download: Download full-size image
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BIORESOURCE TECHNOLOGY
·
2025
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IF 9
Shengchao Xu,Wanting Ma,Junxiong Zhao,Huiyu Wang,Qifeng Wei,Shanshan Wang,Xiulian Ren
Lactic acid (LA) is a crucial platform chemical for biodegradable plastics, primarily produced via microbial fermentation. However, the conventional purification process via calcium salt precipitation generates substantial calcium sulfate waste. This study proposes a novel solvent extraction method using di-(2-ethylhexyl) phosphoric acid (P204) to extract calcium ions from calcium lactate, thereby releasing LA into the aqueous phase. Under multistage counter-current conditions, calcium extraction and stripping efficiencies exceeded 99.7 % and 98.5 %, respectively, yielding a high-purity CaCl 2 ·2H 2 O by-product instead of calcium sulfate. The process demonstrated broad applicability to calcium salts of weak organic acids (p K a > ∼3.40). Mechanistic studies revealed a 2:1:1 (P204:Ca:LA) coordination complex. Green chemistry assessment confirmed the process’s environmental sustainability and practical viability. This work presents an efficient strategy for LA production that avoids calcium sulfate waste, contributing to greener biorefinery processes.
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Journal of Physical Chemistry C
·
2025
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IF 3.2
Xuebiao Deng,Yilan Zhang,Guoying Yao,Huai Chen,Liang Zhao,Tao Zeng,Zhenyu Yang
The surface modification of hydride-terminated silicane (HSi) via thermal alkoxylation is experimentally demonstrated for the first time. Using two types of alcohol (butanol and dodecanol), alkoxyl groups are successfully grafted onto HSi through a mild thermal process, preserving the two-dimensional (2D) structure of HSi. Spectroscopic characterization confirms the formation of Si–O linkages, and electron microscopy reveals intact morphologies of alkoxylized silicane. These alkoxylated silicanes exhibit a distinct blue shift in photoluminescence (PL) emission and significantly faster PL decays compared to those of pristine HSi. Temperature-dependent PL measurements and density functional theory calculations reveal that the green emission of HSi arises from radiative recombination at an indirect band gap, whereas the blue emission of alkoxy-terminated silicane originates from surface trap states introduced by alkoxylation.
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2025
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IF 2.1
Linlin Sun,Guodong Su,Zhenghui Li,Renjie Xu
The equilibrium mole fraction solubility of tanshinone I in acetone, N,N-dimethylformamide (DMF), methanol, ethanol, water, ethylene glycol (EG), n-propanol, isopropanol, and 1-butanol as well as methanol/ethanol/DMF/acetone + water was determined by the isothermal saturation method at 278.15–323.15 K under 101.2 kPa. The temperature and the composition of solvent mixtures play a decisive role in the solubility of tanshinone I. Then, four monosolvent models (Apelblat, van’t Hoff, λh, and NRTL) and three cosolvency models (Jouyban–Acree (J-A), van’t Hoff–Jouyban–Acree (V-J-A), and modified Apelblat–Jouyban–Acree (A-J-A)) were utilized to correlate the mole fraction of tanshinone I. The maximum deviation (relative average deviation (RAD) and root-mean-square deviation (RMSD)) between the experimental data and the solubility data calculated by the monosolvent models are 6.21% and 3.02 × 10–4, respectively. The maximum of RAD and RMSD for the mixture systems are 1.58% and 1.35 × 10–4, respectively. The Kamlet and Taft linear solvation energy relationship model was used to analyze the solvent effect, and the nonspecific dipolarity/polarizability interactions between the solute and solvent played a major promoting role. All in all, the experimental and computational data are able to provide basic data for the optimization and improvement of the recrystallization process of tanshinone I.
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WATER RESEARCH
·
2025
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IF 12.4
Boqiang Li,Longjie Cheng,Lei Wang,Baiyang Chen
Alcohols are widely used as quenchers in UV/chlorine process currently to evaluate the roles of radicals, principally relying on the premise that they selectively react with target radicals (e.g., HO ● and Cl ● ) without affecting other reactions. However, this study revealed several unrecognized alcohol-dependent phenomena in this system that clearly challenge this principle. Specifically, tert-butanol inhibited chlorine decay ( k obs = 0.14 min –1 ), whereas methanol, ethanol, and iso-butanol accelerated it by 1.2-2.3 folds ( k obs = 0.23-0.45 min –1 ). Mechanistic analysis indicated that alcohols quenched HO ● and Cl ● while simultaneously generating secondary species that altered chlorine consumption. In the case of tert-butanol, radical quenching dominated and suppressed indirect chlorine decay, so that tert-butanol actually inhibited the conversion of chlorine. In contrast, other monohydric alcohols formed HO-R ● that reacted with O 2 to O 2 ●− , a stronger driver of chlorine loss. A quantitative structure-activity relationship model (R 2 = 0.949) identified molecular polarizability (α = 13.8-42.9) and the lowest unoccupied molecular orbital energy ( E LUMO = 2.41-2.60 eV) of alcohols as predictive descriptors of chlorine decay. For representative micropollutants, using methanol as quencher inflated the apparent roles of primary radicals (up to 83.6%) but underestimated secondary species such as ClO ● , whereas tert-butanol provided more reliable qualitative indication. To assess radicals reliably, we propose a two-step strategy that avoids misattribution: (1) using tert-butanol for qualitative indication of radical involvement; (2) applying multi-probe competition kinetics and modeling radicals adduct speciation for radical quantification. This work established quantitative bounds on alcohol-induced perturbations and offers a protocol for reliable radical quantification in advanced oxidation research.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
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IF 9.7
Jingjing Jiang,Yushuang Hu,Shijian Zhou,Kaiyuan Xin,Anming Xu,Yuyao Chen,Shaowen Wu,Yan Kong
Hydrogen peroxide (H 2 O 2 ) exhibits substantial potential for applications in sustainable chemistry; however, its photocatalytic synthesis in aqueous media is plagued by key challenges, including inadequate charge separation, unstable reaction intermediates, and cumbersome product recovery processes. This study introduces the benzyl alcohol (BA)-water system integrated with benzo[1,2-b:3,4-b’:5,6-b”]trithiophene (BTT)-based covalent organic frameworks (COFs) to address imitations. The planar, sulfur-rich BTT unit enhances π stacking and interfacial charge separation, while the unique π-π interaction between BTT-n-COFs and BA regulates the charge distribution and optimizes the microenvironment of active sites. This configuration enables BTT-3-COF to achieve an unprecedented H 2 O 2 production of 13,055 μmol g −1 h −1 . More importantly, unlike conventional systems that necessitate catalyst recovery, the present system utilizes inherent phase separation to enable facile and continuous product extraction. Remarkably, the system sustains continuous H 2 O 2 production for over 20 cycles without loss of activity, yielding a ready-to-use solution that proves effective in both inhibiting bacterial growth and degrading pollutants. Experimental and computational analyses reveal a dual-channel mechanism: spatially segregated superoxide radical (∙O 2 − , oil phase) and hydroxyl radical (∙OH, aqueous phase) synergistically drive water oxidation reaction (WOR) and oxygen reduction reaction (ORR). This work presents an innovative example for sustainable and durable photocatalytic H 2 O 2 production.
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Journal of Neuroimmune Pharmacology
·
2025
·Vol. 20
·期 1
·1-23
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IF 3.5
Liu Jiawei,Shi Yusheng,Jin Lingling,Sun Baixue,Wang Ruonan,Ge Guangbo,Zhu Guanghao,Cui Xiaolin,Zhao Jie,Zhang Yan,Li Sheng
Parkinson’s disease (PD), the second most prevalent neurodegenerative disorder, remains without a curative pharmacological intervention. Sea Cucumber Peptides (SCP) are recognized for their antioxidant properties and neuroprotective potential, while no specific SCP have been documented for PD treatment. Moreover, sea cucumbers have long been consumed as a traditional food; viewed through the lens of “food-medicine homology”, their peptides possess clear pharmaceutical potential. This study sets out to pinpoint particular peptide sequences from sea cucumbers could combat PD, exploring their therapeutic efficacy and the underlying mechanisms. We treated Rotenone (Rot)-induced C57BL/6 J mice and SH-SY5Y cells with the SCP which were extracted from the sea cucumbers, to assess the impact on behavioral metrics in mice, histopathological outcomes, cellular viability, and in vitro bioactivity. Employing a combination of peptide profiling and silico analysis, we established a SCP spectrum to identify novel SCP with potential anti-PD activity. The therapeutic effects and mechanisms of the peptides were further investigated in 7-day-old zebrafish larvae and SH-SY5Y cells exposed in Rot, respectively. Our findings indicate that the SCP significantly improved behavioral deficits in mice, reduced the degeneration of dopaminergic neurons in the substantia nigra, and increased the survival of Rot-exposed SH-SY5Y cells. Notably, a novel peptide, Gln-Trp-Phe-Asp-Trp (QWFDW), emerged from our peptide profiling and in silico analysis, showing significant anti-PD activity. QWFDW was demonstrated to enhance the behavioral performance of Rot-induced zebrafish larvae, and ameliorate the pathological features of PD by attenuating endogenous reactive oxygen species (ROS) and maintaining mitochondrial membrane potential in SH-SY5Y cells. At the cellular level, QWFDW activates the Nrf2/HO-1/GPX4 pathway to alleviate ferroptosis and exert therapeutic effects on PD. Collectively, our results point out that SCP, particularly QWFDW, was a prospective therapeutic agent for PD. Graphical
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JOURNAL OF LUMINESCENCE
·
2025
·
IF 3.6
Zhaoyong Jiao,Zhiheng Shang,Minghuan Cui,Shuwen Zheng,Pan Song,Haiying Wang,Jicai Zhang,Jian Song,Shuhong Ma,Guangrui Jia,Zhongpo Zhou,Chaochao Qin
This study explores the energy transfer mechanisms through visible-light excitation of hybrids based on CsSnBr 3 nanocrystals and Rhodamine B (RhB) chromophores. The ability of RhB dyes to donate energy to CsSnBr 3 is comprehensively investigated with steady-state and time-resolved photoluminescence, as well as femtosecond transient absorption spectroscopy. The Förster resonance energy transfer (FRET) dominates (85.1 %) the photosensitization of the singlet excited state of RhB in the nanocrystal-chromophore hybrids with a rate constant of 4.3 × 10 9 s −1 . These findings reveal the energy transfer mechanism and highlight the design of light-harvesting devices based on CsSnBr 3 nanocrystals and organic chromophores.
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