Polymers
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2024
·Vol. 16
·期 7
·990
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IF 4.7
Kang Yang,Di Liu,Lei Feng,Liugen Xu,Yangang Jiang,Xiran Shen,Amjad Ali,Jianwei Lu,Li Guo
The development of nontoxic and efficient antifreeze agents for organ cryopreservation is crucial. However, the research remains highly challenging. In this study, we designed and synthesized a series of peptoid oligomers using the solid-phase submonomer synthesis method by mimicking the amphiphilic structures of antifreeze proteins (AFPs). The obtained peptoid oligomers showed excellent antifreeze properties, reducing the ice crystal growth rate and inhibiting ice recrystallization. The effects of the hydrophobicity and sequence of the peptoid side chains were also studied to reveal the structure–property relationship. The prepared peptoid oligomers were detected as non-cytotoxic and considered to be useful in the biological field. We hope that the peptoid oligomers presented in this study can provide effective strategies for the design of biological cryoprotectants for organ preservation in the future.
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ADVANCED FUNCTIONAL MATERIALS
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2025
·
IF 19
Fei He,Shuhao Sun,Beibei Cai,Rui Tian,Myoung Won Chung,Seunghyun Weon,Wonyong Choi
Volatile aliphatic amines (VAAs) are toxic pollutants with low odor thresholds, contributing to the formation of smog, aerosols, and carcinogenic nitrosamines, but their removal is hindered by complex degradation pathways and the generation of non-volatile by-products. This study introduces a novel triphasic photocatalytic system consisting of periodic acid (PA), tungsten trioxide (WO 3 ), and an in situ surface water layer for the mineralization of VAAs under visible light. PA protonates the VAAs molecules, altering the hydroxyl radical attack pathway and subsequently forming vicinal amino-alcohol intermediates, which further react with PA via amine-specific complexation to induce rapid C─C bond cleavage. This leads to the generation of smaller aldehydes and acids, which are then rapidly mineralized into CO 2 . The PA/WO 3 system mineralizes 120 ppmv n-propylamine ( n-PrA ) with an exceptionally high apparent quantum efficiency (AQE) of 91.8%, compared with only 9.4% for acetaldehyde under identical conditions. This process prevents secondary pollution by dissolving the ammonium product in the in situ surface water layer. These results highlight the outstanding performance of PA/WO 3 for eliminating various VAAs from air, establishing it as a highly effective and selective method for purifying amine-contaminated air.
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CHEMICAL PAPERS
·
2025
·
IF 2.5
Xu Hongqing,Ma Xiaofei,Guan Xiaomin
The synergistic effects between deep eutectic solvents (DESs) and chiral selectors in aqueous capillary electrophoresis (CE) for enantioseparation has been well validated. However, such synergistic effects have not been thoroughly validated in nonaqueous capillary electrophoresis (NACE). In this work, two amino acid deep eutectic solvents (AADES) were prepared as additives in NACE and the synergistic separation systems with native β-cyclodextrin (β-CD) for the enantioseparation of several dansyl amino acids (Dns-AA). Compared to the unmodified β-CD system, the separation of Dns-AA was significantly improved in the synergistic system. We optimized several key separation parameters and explored the chiral recognition mechanism using molecular modeling technique. Additionally, we calculated the binding constants of the enantiomers with β-CD in the two systems using dansyl alanine as a model analyte. In the presence of AADES, the Dns-AA enantiomers formed tighter complexes with β-CD. This study demonstrated that the proposed AADES exhibited good synergistic effects with β-CD in NACE, and they were proved to be promising additives for enantioseparation. Graphical abstract
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ENERGY & FUELS
·
2025
·
IF 5.3
Jingru Liu,Zhenyu Hao,Jie Qi,Li Tong,Hongsheng Lu,Shucai Zhang
Solvent extraction that relies on the dissolution-based “like dissolves like” principle proves inadequate for achieving efficient oil-solid separation in oily solid waste, as oily components are inclined to be tightly adsorbed to solid surfaces. Enhancing the detachment of oily components from solid surfaces is critical for improving the cleaning efficiency. Herein, we propose a sustainable strategy for enhanced cleaning of oily solid waste using a CO2 switchable solvent system (DES/EBA) comprising deep eutectic solvent (DES) and N-ethylbutylamine (EBA). In this DES/EBA system, DES weakens the oil-solid adhesion, while EBA plays the role of extracting oily components. The system changes from low to high polarity (π*, 0.27–0.67) upon CO2 introduction, facilitating a biphasic-to-monophasic transition and achieving a >99% recovery of oily components. The residual oil rate in oily solid waste remained below 2.00% after four cleaning cycles, with both DES and EBA recovery rates exceeding 90%. This CO2 DES/EBA system offers a promising approach for sustainable oily solid waste treatment.
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FUEL
·
2025
·
IF 7.5
Chengyuan Hua,Shaozhu Yin,Zhiyuan Zhang,Jiaoyang Liu,Xinru Chen,Baoyun Ye,Jingyu Wang,Chongwei An
Enhancing specific impulse and optimizing combustion performance are key objectives in the development of composite solid propellants (CSPs). In this study, a novel core–shell structured AP-based composite fuel (AP@Al) was designed and synthesized via interface engineering strategies, leveraging fuel-oxidizer integration and synergistic core–shell interactions to improve combustion efficiency. The morphology, structure and thermal properties of AP@Al were studied.Furthermore, combustion tests were conducted to evaluate its impact on propellant combustion behavior, and the condensed combustion products (CCPs) were analyzed to elucidate its combustion mechanisms. The results indicate that the unique core–shell structure of AP@Al significantly accelerates the thermal decomposition of AP.Compared to conventional CSPs, propellants containing AP@Al exhibit a combustion rate increase of up to 21.8% and a reduction in ignition delay time of up to 30%, demonstrating its superior ignition and combustion characteristics. Moreover, the aggregation of combustion residues is markedly reduced, providing new insights into its potential mechanism for improving combustion efficiency. These findings highlight the promising application prospects of AP@Al as an advanced composite fuel for next-generation solid propellants.
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CHEMISTRY OF MATERIALS
·
2025
·
IF 7
Jiaxing Zhang,Ajuan Zhou,Fang Hao,Kexin Yang,Yiren Yu,Yucai Qin,Xiongfu Zhang,Limin Ren,Anfeng Zhang,Guanghui Zhang,Chunshan Song,Xinwen Guo
The green synthesis of b-axis-oriented ZSM-5 nanosheets (NSs) is essential for facilitating their industrial production. Here, a set of cost-effective and eco-friendly additives is introduced for the tailored synthesis of thin ZSM-5 NSs with a b-axis thickness of 40 nm with the assistance of small seeds. Through a comprehensive exploration of synthesis methods and electron microscopy analysis, this work elucidates the pivotal roles of seeds and additives in controlling the crystal size and steering anisotropic growth kinetics during the crystallization process. The shortened straight channels of the thin ZSM-5 NSs along the b-axis significantly enhance the rapid transport of molecules within the micropores, thus manifesting a distinct catalytic advantage in the alkylation of benzene with methanol and methanol-to-propylene (MTP) conversion. Notably, the utilization of fluorine-free additives in the synthesis of thin ZSM-5 NSs marks an important step forward in zeolite materials, bridging the gap between laboratory experimentation and industrial scale-up.
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SOLAR ENERGY
·
2025
·
IF 6.6
Huizhen Ke,Qinyi Zhang,Jiawei Zhan,Ying Zhang,Shuyu Zhang,Minglin Zhang,Pengyun Zhang
Open-air-processed perovskite solar cells (PSCs) already garnered significant attention of the international scholars because the uncomplicated and economically viable production methods. Nevertheless, the ambient atmosphere frequently poses a multitude of detrimental factors. For example, suboptimal levels of humidity and the presence of oxygen can result in flawed perovskite crystal formation and numerous surface imperfections, significantly diminishing the power conversion efficiency (PCE) and adversely affecting the final PSCs’ overall stability. Therefore, we employ an optimal approach utilizing liquid-phase small molecules to systematically optimize the perovskite layer, specifically incorporating the additive Perfluoro(4-methylpent-2-ene) (C 6 F 12 ), into an environmentally benign anti-solvent for fabricating the MAPbI 3 layer. The C 6 F 12 molecules, are liquid at room temperature, consist of carbon–carbon single or double bonds and carbon–fluorine bonds. Through Lewis acid-base interactions, the fluorine atoms within C 6 F 12 can establish some covalent bonds with lead and methylamine, as well as form hydrogen bonds with methylamine. These bonding mechanisms proficiently address the vacancies created by iodine (V I ) within the perovskite framework. Meanwhile, the inherent hydrophobic properties of fluorine atoms provide improved moisture resistance to perovskite films produced in atmospheric conditions, thereby enhancing the resultant PSCs’ stabilization. Consequently, the upgrade perovskite layers demonstrate larger grain dimensions and diminished trap density. The optimal device, passivated with C 6 F 12 and processed in air, achieves a champion PCE of 21.25%, approaching the performance of samples fabricated in a glove-box. Furthermore, the non-encapsulated device modified with C 6 F 12 demonstrates exceptional stability across multiple variables. This straightforward and environmentally friendly approach is expected to broaden the applicability of PSCs.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Wei Li,Qian Liu,Xun Zhang,Yingfeng Wang,Maoli Yin,Xuchen Tao
This study mainly aimed to reveal the superiority of the positively charged poly( N , N -dimethyl acrylamide) (PC-PDMAA)/poly(ethyl acrylate) (PEA) structure to control poly(sodium allyl sulfonate) (PSAS)/PEA structure in enhancing the sizing properties (viscosity stability, adhesion to fibers (cellulose-based cotton and hydrophobic polyester), and film properties) and desizability of starch, and avoid desizing difficulty issue of positively charged PATAC-grafted starch, due to its worse desizing efficiency. Also, it aimed to survey the influence of grafting ratio on these properties, to develop a new biobased starch adhesive, PC-PDMAA- g -starch- g -PEA (PC-PDMAA- g -S- g -PEA), for the sizing of cotton and polyester. Under a similar grafting ratio, the PC-PDMAA- g -S- g -PEA (IV) showed significantly superior bonding to both fibers, film elongation and endurance ( p < 0.05), and better paste stability and desizability compared to control PSAS- g -starch- g -PEA (PSAS- g -S- g -PEA, IV # ). This demonstrated that combining the PC-PDMAA/PEA branches could further enhance these properties of acid-thinned starch (ATS) compared to the PSAS/PEA branches. Bonding strengths, viscosity stability, desizability, film elongation, and film endurance of PC-PDMAA- g -S- g -PEA were strengthened with an increased grafting ratio from 0 % to 10.80 %. According to these findings, PC-PDMAA- g -S- g -PEA, a novel starch bio-based adhesive with a grafting ratio of 10.80 %, showed promise for use in cotton and polyester warp sizing.
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