REACTIVE & FUNCTIONAL POLYMERS
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2025
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IF 5.1
Lei Chen,Yin Lu,Kan Zhang
With the increasing awareness of environmental protection, considerable efforts are now devoted into bio-derived material fabrication. Through utilization of renewable biomass aligning with green chemistry principles, various sustainable materials have been prepared. In the current study, an innovative benzoxazine monomer containing dual coumarin moieties was successfully prepared through Mannich condensation using 4-methylumbelliferone (bio-phenolic precursor) and 7-amino-4-methylcoumarin (bio-amine component). The molecular architecture integrates photoreactive coumarin moieties, enabling dual photo-thermal curing capability. Structural validation via 1 H/ 13 C NMR and FT-IR spectroscopy confirmed the monomer integrity. Real-time UV–Vis spectroscopy monitoring indicated an 81 % conversion of the [2π + 2π] cycloaddition reaction following 2 h of UV irradiation (λ = 365 nm). The photopolymerized benzoxazine precursor shows a 5.4 °C curing temperature depression comparing to unphotopolymerized monomer. Complementary in-situ FT-IR analyses and DSC elucidated thermal-initiated ring-opening polymerization, demonstrating temperature-dependent conversion profiles. The polybenzoxazine prepared through photo-thermal polymerization shows higher thermal stability than solely thermal polymerized one. Through molecular design, this work realizes photo-thermal synergistic curing of bio-based benzoxazine resins, proposing an innovative approach to develop thermosetting materials that integrate low-energy processing, high heat resistance, and environmental sustainability.
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高影响因子
POLYMER
·
2026
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IF 5.1
Xiaoqiang Luo,Zitao Yang,Anjia Zheng,Zhongte Pei,Chuanxi Wang,Jiaming Zhang,Qianyu Wang,Rui Hu,Cancan Zhang,Yaqiong Zhang,Chongxiao Ge,Feng Jiang
Sustainable and functional elastomers derived from renewable resources are highly desirable as alternatives to conventional petroleum-based materials. Herein, a series of chitin-based fluorescent elastomers, Chitin- graft -poly(7-acryloyloxy-4-methyl coumarin- co - n -butyl acrylate) (Chitin-g-P(AMC- co -BA)) copolymers, were successfully synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization. In this design, the coumarin derivative AMC was used as the hard and fluorescent segment while BA was selected as the soft segment to graft from the rigid chitin backbone to construct novel bio-based elastomers. By systematically varying the AMC/BA feed ratios and chitin contents, the glass transition temperature ( T g ), mechanical performance, adhesion strength, and fluorescent properties of the Chitin-g-P(AMC- co -BA) could be precisely tailored. The elastomers demonstrated tunable tensile strength (up to 12.2 MPa) and extensibility (up to 1989%). Furthermore, these chitin graft copolymers possess excellent adhesion performance and show strong blue fluorescence under UV irradiation, benefiting from the presence of the coumarin structure. This work provides an effective grafting strategy to develop multifunctional, sustainable elastomers from chitin and bio-based monomers, offering promising potential for applications in adhesives, flexible materials, and fluorescent functional systems.
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高影响因子
JOURNAL OF HAZARDOUS MATERIALS
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2026
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IF 10.6
Qiujie Lu,Chunyu Xiang,Haoyang Wu,Shibin Liu,Gang Liu,Xiaofei Sun,Zhengyu Luo,Bowen Li,Huaiyong Shao
Biochar-based fungal immobilization is widely used to degrade organic contaminants, yet microscale biochemical dynamics governing size-dependent performance of filamentous fungal pellets remain unclear. Here, the microscale distribution of enzyme activity and pH during aniline removal by Phanerochaete chrysosporium immobilized pellets was quantified using in situ zymography and planar optode mapping. After acclimation, conditions of aniline removal by immobilized fungal pellets were optimized using response surface methodology. Among 12 biochars, straw-derived magnetic biochar pyrolyzed at 700°C showed the highest aniline adsorption ( q e = 16.36 mg·g −1 ) and thus was selected as the carrier. Under optimized conditions (24 mL inoculum, 1.2 g biochar, 10 h pre-adsorption, 30°C, pH 6.0), magnetic biochar-immobilized fungal pellets (MB-IFPs) removed 98.99% of aniline in 8 days and retained 74.10% efficiency after five cycles. Comparison of three pellet sizes (1–2, 3–4, and 5–6 mm) revealed size-dependent microenvironmental heterogeneity: the maximum β-glucosidase activity influence radius reaches 26–34 mm after 48 h’ incubation compared to free fungi (about 5 mm). Enzyme activity and pH gradients were the strongest near the pellet core and weakened toward the periphery, with immobilized fungal pellets inducing stronger core acidification than free fungi. Medium-sized pellets (3–4 mm) showed the most favorable early-stage microscale performance, reaching a peak β-glucosidase activity of 2.27 μmol cm −2 h −1 , being 61% higher than free fungi. These findings reveal an inside-out attenuation pattern of biochemical activity in immobilized fungal pellets and identify pellet size as a critical design parameter for optimizing fungal remediation systems.
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PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Jianting Huang,Panyu Duan,Xincheng Dai,Jingcheng Zhang,Wei Yue,Yafeng Li,Longyuan Guo,Mingdeng Wei
Self-assembled monolayers (SAMs) have played a pivotal role in advancing the efficiency of inverted PSCs, with [4-(3,6-Dimethyl-9H-carbazol-9-yl)butyl] phosphonic acid (Me-4PACz) emerging as one of the most promising SAMs materials, enabling devices to achieve record PCEs exceeding 27%. However, the operational stability of highly efficient devices is still hampered by the susceptibility of Me-4PACz molecules to light-induced degradation. Specifically, UV exposure leads to cleavage of the carbon-phosphorus bond in Me-4PACz, resulting in anchor group detachment and consequent deterioration of device performance. Addressing this challenge, two ultraviolet absorbers, 7-Amino-4-methylcoumarin and 7-Hydroxy-4-methylcoumarin as multifunctional additives were introduced into the Me-4PACZ solution, and can not only effectively filter harmful UV radiation, preserving the structural integrity of SAMs, but also enhance the uniformity and compactness of the monolayer and passivate defects at the perovskite buried interface by coordinating with uncoordinated lead ions. As a result, the modified devices achieved a significant boost in PCE from 23% to over 25%, along with improved V oc and J sc. Furthermore, the photostability of the devices was substantially enhanced under continuous illumination. Thus, such a work could offer a simple and effective interfacial engineering strategy to simultaneously improve the efficiency and photostability of inverted perovskite solar cells.
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高影响因子
REACTIVE & FUNCTIONAL POLYMERS
·
2023
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IF 5.1
Xiaoyu Zhang,Keyu Feng,Peng Yin,Yuqi Pan,Yujie Liu,Fanglei Zeng,Ning Li,Gang Yi,Zhongwei Wang
The flexible sensor with self-healing performance can heal itself when the sensor is damaged by the outside world, so it can significantly improve the service life of the sensor and reduce the repair cost, which has attracted widespread attention. However, currently, most flexible sensors with self-healing performance have problems such as single repair conditions and difficulty in balancing mechanical performance and repair efficiency. In this study, polypyrrole modified carbon nanotubes (PPY/CNTs) were first made, and then, inspired by the Chinese traditional myth “Nuwa Fuxi”, a multiple dynamic crosslinking self-healing composite poly(siloxane-urethane) conductive elastomer (CPUSi) was successfully developed. The prepared CPUSi has excellent mechanical properties (11.27 MPa) and total shear repair efficiency (84%) under the excitation of multiple dynamic reversible interactions. At the same time, the surface scratch of CPUSi can be self-healing under multiple conditions such as heating at 60 °C, infrared light and ultraviolet light. The scratch repair efficiency is up to 99.9% under infrared light for 2 h. in addition, CPUSi has cyclic response to temperature and strain, so the material has broad application prospects in sports monitoring, electronic skin, intelligent wear, brain-computer interface and other fields
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高影响因子
Acta Biomaterialia
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2022
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IF 10.633
Chunling Ren,Xiao Xu,Dan Yan,Mengzhen Gu,Jinghan Zhang,Haili Zhang,Chao Han,Lingyi Kong
With the development of redox-related therapy modalities in cancer therapy, photodynamic therapy (PDT) has gradually become the most widely used type in the clinic. However, the hypoxic tumor microenvironment restricted the curative effect of PDT. Here, a strategic hypoxia relief nanodrug delivery system (SHRN) with a synergetic strategy was designed to alleviate tumor hypoxia on the basis of PDT. Specifically, the oxygen producer MnO 2 , oxygen consumption inhibitor atovaquone (ATO) and photosensitizer hypericin (HY) were loaded in SHRN. MnO 2 reacted with excess H 2 O 2 in the tumor microenvironment to increase oxygen generation, while ATO inhibited electron transfer in the aerobic respiratory chain to decrease oxygen consumption. Then, HY utilized this sufficient oxygen to produce ROS under irradiation to enhance the PDT effect. In vitro and in vivo assays confirmed that SHRN exhibits powerful and overall antitumor PDT effects. This formulation may provide an alternative strategy for the development of PDT effects in hypoxic tumor microenvironments. Statement of significance We constructed a strategic hypoxia relief nanodrug delivery system (SHRN) with a synergetic strategy to alleviate tumor hypoxia on the basis of photodynamic therapy (PDT). This work uniquely aimed at not only increased O 2 generation in hypoxic tumor microenvironment but also reduced O 2 consumption. Moreover, we designed a nanodrug delivery system to enhance the tumor permeability of SHRN. In vitro and in vivo assays all confirmed that SHRN exhibited powerful and overall antitumor effects. This formulation may provide an alternative strategy for the development of the PDT effect in hypoxic solid tumor.
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高影响因子
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
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2023
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IF 2.3
Ning Li,Xiaoyu Zhang,Yuxi Zhang,Guorui Wang,Ruotong Wang,Chi Zhang,Fanglei Zeng,Hailong Liu,Gang Yi,Zhongwei Wang
In order to improve the poor hydrophobicity and single repair conditions of traditional self-healing polyurethane coatings, prepolymers were synthesized with bio-based polyol castor oil (CO), self-made alkyl aryl modified silicone polyols (Si-OH) and isophorone diisocyanate (IPDI), and 4,4'-dithiodianiline (ODD) was used as chain extender containing dynamic disulfide bond, 4-methylumbelliferone (4-MU), as a bio-based end capping agent with reversible ring structure, was polymerized step by step to prepare a photothermal responsive bio-based superhydrophobic self-healing poly(siloxane-urethane) coating (PUSi). In this paper, the effect of the amount of alkyl aryl modified silicone polyol (Si-OH) on the properties of PUSi was studied. The results showed that PUSi with different alkyl aryl modified silicone polyol additions could achieve self-healing under heating, UV irradiation and infrared light irradiation, and the maximum repair efficiency could reach 91% through optical microscope (OM), 3D profilometer and universal testing machine; The contact angle meter proved that the introduction of alkyl aryl modified silicone polyol greatly improved the hydrophobicity of PUSi, and the maximum water contact angle was 162°. The coating has broad application prospects in the fields of self-cleaning fabrics, super hydrophobic surfaces, special protective clothing and so on.
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高影响因子
Materials Today Chemistry
·
2021
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IF 8.301
Y. You,M.R. Fu,M.Z. Rong,M.Q. Zhang
Thermoresponsive covalent adaptive networks (CANs) have attracted increasing research attention because of their temperature-dependent reversibility, which endows the materials with versatile smart functionalities including intrinsic self-healability not available for traditional thermosets . Nevertheless, the associated reduction in creep resistance of this type of CANs limits their practical application. Here in this work, we demonstrate that the reversibility and dimensional stability can be combined via interlocking the thermoresponsive network with an ultraviolet-responsive network. The two types of networks are, respectively, crosslinked by orthogonal reversible Diels-Alder (DA) bonds and coumarin. Owing to the interlocked architecture, the latter single network can be uniformly distributed in the former, restricting the chain movement and enhancing the creep resistance even when the former is decrosslinked at elevated temperature as a result of retro-DA reaction. Meanwhile, the ultraviolet-responsive network plays the role of a photo-reversible switch. Its decrosslinking on exposure to 254 nm ultraviolet (UV) light and recrosslinking under a UV irradiation of 350 nm lead to repeated releasing and reimposing of the restraints on the neighboring thermoresponsive network. By using this smart habit, the material can either be conditionally self-healed with moderate healing efficiency or completely self-healed depending on whether only DA bonds or both DA bonds and coumarin are triggered. More importantly, the conflicting properties, that is, creep resistance and reversibility of the CANs are thus united. The proposed strategy provides a facile way for overcoming the weaknesses of CANs while maintaining the advantage.
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高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2023
·
IF 19
Chao Xing,Laiben Gao,Xiaoqiu Dou,Kaikai Yang,Changli Zhao,Chuanliang Feng
Hypoxic injury poses a severe threat to cell survival. Activation of pro-survival autophagy via autophagy-inducing nanomaterials (AINMs) has emerged as one of the most promising therapeutic strategies. However, internalized AINMs easily bind with intracellular lysosomes, resulting in disruptive effects on autophagic flux and limited pro-survival effects. Herein, inspired by the naturally existing chiral structures in actin membrane protein, two nanofibers based on achiral pyridine-substituted coumarin derivatives (PyC) with only difference in supramolecular chirality are constructed by the method of chirality memory to activate autophagy extracellularly. The high degree of conformational chirality matching between right-handed PyC-r nanofibers and actin ensures an enhanced stereoselective interaction between the pyridine groups on PyC and the hydroxyl groups on serine-rich Girdin protein (an actin-binding protein involved in cell survival). This stereoselective interaction can activate the autophagy-related Akt/mTOR pathway via mechanical signal transmission and phosphorylation of Akt, which avoids the disruption of autophagic flux and significantly mitigates cellular hypoxic injury. In a rat myocardial ischemia model, scar formation and functional deterioration are particularly alleviated by injection of PyC-r nanofibers into murine infarcted myocardium. The findings pioneeringly establish a direct link between chiral biomedical materials and cellular autophagy, offering novel insights for cellular hypoxic protection.
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高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2023
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IF 11.4
Huiqiang Yang,Na Chen,Zhiqiang Wang,Jinbo Liu,Jianjun Qin,Kecheng Zhu,Hanzhong Jia
The toxicity of environmentally persistent free radicals (EPFRs), often generated during biochar production, on soil bacteria is still not truly reflected when considering the conditions in real soil. Herein, the influence of free radicals within biochar on soil bacteria was investigated from the perspectives of enzyme activity, community structure, and ecoenzymatic stoichiometry. Biochar addition enhanced the contents of EPFRs and derived hydroxyl radicals (•OH) in the soil, while it reduced bacterial alpha diversity by 5.06–35.44%. The results of redundancy analysis and inhibition experiments collectively demonstrated the key role of EPFRs and •OH in reducing the bacterial alpha diversity. Specifically, EPFRs and •OH increased the stoichiometric imbalance by promoting the release of dissolved organic carbon and ammonium N, thus aggravating the P limitation in soil. This was further confirmed by increased alkaline phosphatase activity from 702 to 874 nmol g–1 h–1. The P limitation induced by EPFRs and •OH decreased the bacterial alpha diversity, as evidenced by the negative correlation between P limitation and bacterial alpha diversity (r2 = −0.931 to −0.979, P < 0.01) and the structural equation model. The obtained results demonstrate a ubiquitous but previously overlooked mechanism for bacterial toxicity of biochar-associated free radicals, providing scientific guidance for safe utilization of biochar.
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PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Siyu Yang,Qiuyan Luo,Chuanluan Guo,Jia Jiang,Xiaohong Wang,Juguo Dai,Dongxu Li,Kaibin He,Yiting Xu,Conghui Yuan,Weiang Luo,Lizong Dai
Hydrogels have attracted widespread attention in anticounterfeiting due to their unique physical/chemical properties and designability. However, hydrogels’ poor mechanical properties and sluggish response to chemical stimuli pose challenges for their wide application. A fluorescent tough organohydrogel capable of freeform writing of information is reported in this work. By incorporation of the fluorescent monomer 7-methylacryloxy-4-methylcoumarin into the polyacrylamide network in a covalently cross-linked manner while intertwining with the carboxymethyl cellulose sodium network, a fluorescent tough organohydrogel with a dual-network structure is prepared. The organohydrogel shows acid–base-mediated adjustable fluorescence through the transformation of fluorescent monomers. Ion printing and electrical stimulation design achieved free information storage and encryption. In addition, the prepared organohydrogel has good antifreezing properties and can be encrypted and decrypted at subzero temperatures. The encrypted information in the organohydrogel can be read only after UV-light irradiation. These patterned fluorescent organohydrogels should find applications in protected message displays for improved information security.
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PubMed
高影响因子
CARBOHYDRATE POLYMERS
·
2021
·
IF 9.381
Chen Xu,Jinhui Lu,Li Zhou,Jie Liang,Lei Fang,Feng Cao
Topical drug delivery system to the posterior segment of the eye is facing many challenges, such as rapid drug elimination, low permeability, and low concentration at the targeted sites. To overcome these challenges, Multifunctional nanocomposite eye drops of dexamethasone-carboxymethyl-β-cyclodextrin@layered double hydroxides-glycylsarcosine (DEX-CM-β-CD@LDH-GS) were developed for relay drug delivery. Herein, our studies demonstrated that DEX-CM-β-CD@LDH-GS could penetrate through human conjunctival epithelial cells with an intact structure and exhibited integrity in the sclera of rabbits’ eyes with in vivo fluorescence resonance energy transfer imaging. Consequently, tissue distribution indicated that DEX-CM-β-CD@LDH-GS nanocomposite eye drops could maintain the effective therapeutic concentration of DEX in choroid-retina within 3 h. As a relay drug delivery system, drug-CD@LDH nanocomposites offer an efficient strategy for drug delivery from ocular surface to the posterior segment.
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高影响因子
危险品化学品经营许可证（带存储）