Science China-Chemistry
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2025
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IF 9.7
Ding Shurong,Liu Shasha,Yang Yuzhuo,Shi Linlin,Zhang Yongqiang,Yu Jingkun,Song Haoqiang,Shi Yingge,Lu Siyu
In the fields of biomedicine, detection, and anti-counterfeiting, there is a widespread demand for cost-effective, easily synthesized, and environmentally friendly near-infrared (NIR) materials. Carbon dots (CDs), a cheap and non-toxic zero-dimensional carbon nanomaterial exhibiting exceptional photoluminescence (PL) properties and facile structural modification, have emerged as a promising candidate for the development of novel NIR materials. This study presents the synthesis of CDs capable of emitting a wide range of wavelengths from blue to NIR (456–836 nm) as their concentrations increase. The incorporation of oxygen and nitrogen co-doped atoms facilitates the optimization of non-coplanar angles, thereby promoting favorable π-π stacking interactions. This leads to the formation of metal-free rigid clusters through interconnecting adjacent nanoparticles in a gear-like meshing pattern through self-assembly. Consequently, intramolecular motion is constrained, vibration coupling is mitigated, non-radiative transition losses are minimized, and efficient NIR emission from CD clusters in high concentrations is ensured. Furthermore, NIR light-emitting diode (NIR LED) based on the CD clusters was successfully fabricated and employed for various applications including information encryption, anti-counterfeiting, and penetration detection in the field of NIR imaging.
研究领域:
生物医学
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材料科学
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光学检测
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DOI
高影响因子
JOURNAL OF POLYMER SCIENCE
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2025
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IF 3.6
Xin Liu,Xiaojun Wang,Rongrong Chen,Qi Liu,Dalei Song,Gaohui Sun,Jing Yu,Jingyuan Liu,Jiahui Zhu,Shifeng Guo,Jun Wang
Biological fouling will cause severe damage to the functionality of marine underwater facilities, shorten their service life, impede their normal operation, and trigger a biological invasion event. The traditional marine antifouling coatings release heavy metal elements, which cause harm to the marine environment. To overcome this issue, a self-polishing antifouling resin based on vanillin methacrylate (VMA) was prepared via the free radical polymerization method. In seawater, the VMA-based coatings achieve self-polishing through the hydrolysis of the phenolic ester group. The hydrolysis mechanism of VMA was calculated using density functional theory by Cp2k software, and the results show that VMA achieves one-step hydrolysis by the S N 2 mechanism. It exhibited antibacterial and environmentally friendly antifouling properties by releasing vanillin, which is a natural antifouling active substance. The antibacterial, diatom adhesion inhibition, and the 9-month marine field test demonstrated the excellent antifouling performance of VMA-based coatings. It provides a novel concept for environmentally friendly self-polishing coatings and has a promising application prospect. Graphical
研究领域:
材料科学
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海洋生物学
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环境科学
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产品关联
DOI
高影响因子
OPTICAL MATERIALS
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2024
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IF 3.8
Qian Qiao,Tongge Zhao,Jian Zheng,Huiting Yin,Yuan Zhang,Jinhao Zang,Xun Yang,Haoyu Li,Taotao Rao,Xuan Yu,Xiaoming Yu
Self-powered poly (3-hexylthiophene)/zinc oxide (P3HT/ZnO) heterojunction ultraviolet photodetectors decorated by silver nanoparticles (Ag NPs) were fabricated by sol-gel and spin-coating techniques. The ultraviolet photoresponse performance of the P3HT/ZnO heterojunction photodetectors influenced by the position of plasmonic Ag NPs was investigated. The responsivity and detectivity of the P3HT/Ag/ZnO photodetector with placed Ag NPs at the interface of ZnO and P3HT layers enhanced to 1.92 and 1.15 times compared to the reference devices. When the Ag NPs embedded into ZnO layer , the responsivity, detectivity and external quantum efficiency were 16.42 mA/W, 5.97 × 10 11 Jones, and 5.36 %, respectively, which were 5.77 times, 4.64 times and 5.77 times to that of the pristine P3HT/ZnO photodetector. The enhancement mechanism of plasmonic metallic nanoparticles to the performance of the photodetectors was discussed in details. This study presents a simple route to high performance self-powered photodetectors.
研究领域:
材料科学
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光电子学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Yajun Mi,Wu Tong,Yin Lu,Xia Cao,Ning Wang
Currently, combining multimodal perceptual ability with mechanical robustness poses a significant challenge for developing hydrogel-based flexible electronics. Herein, a robust conductive hydrogel was successfully synthesized by introducing cellulose nanocrystals (CNC) as nanofillers and lithium chloride (LiCl) as the conductive component into the copolymer network through a one-pot crosslinking procedure in a water-dimethyl sulfoxide binary solvent. Besides excellent stretchable, self-adhesive, anti-freezing, self-healing, and anti-swelling properties, tunable and reversible optical property was realized due to the polarity-induced microphase separation of the hydrophilic and hydrophobic group in the zwitterionic sulfobetaine chains, enabling cyclic information encryption and decryption. An all-weather wearable sensor array was thus developed for multi-modal sensing of various environmental stimuli, including mechanical, and thermal variations. Specifically, the intensity and spatial distribution of strain can be detected almost in real time within a broad strain range, thus realizing speech recognation, text-to-speech and human electrocardiogram signal acquisition and underwater non-contact sensing functions. Notably, the CPAMD-based triboelectric nanogenerator demonstrates impressive temperature tolerance (−40 °C and 60 °C), and remarkable material identification capability. A non-contact proximity sensing sensor and a foul detection system were thus developed by coupling the piezoresistive, triboelectric and capacitive sensing metrics to serve as an electronic referee for identifying foul in curling. This work provides a valuable reference toward combining excellent mechanical robustness with balanced electrical performance for tactile perception and intelligent sports monitoring.
研究领域:
材料科学
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生物医学工程
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柔性电子学
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产品关联
DOI
高影响因子
Small
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2024
·Vol. 20
·期 38
·2401387
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IF 13
Chaochao Cao,Jingwen Yang,Shaobo Yang,Song Yan,Chaoze Liu,Dong Wang,Yanming Xue,Xiongwei Qu,Chengchun Tang
Bulk hexagonal boron nitride ( h -BN) ceramics with structural integrity, high-temperature resistance and low expansion rate are expected for multifunctional applications in extreme conditions. However, due to its sluggish self-diffusion and intrinsic inertness, it remains a great challenge to overcome high-energy barrier for h -BN powder sintering. Herein, a cross-linking and pressureless-welding strategy is reported to produce bulk boron nitride nanosheets (BNNSs) ceramics with well-crystalized and dense B–N covalent-welding frameworks. The essence of this synthesis strategy lies in the construction of >B─O─H 2 C─H 2 C─H 2 N:→B< bond bridge connection structure among hydroxyl functionalized BNNSs (BNNSs-OH) using bifunctional monoethanolamine (MEA) as cross-linker through esterification and intermolecular-coordination reactions. The prepared BNNSs-interlaced ceramics have densities not less than 1.2 g cm −3 , and exhibit exceptional mechanical robustness and resiliency, excellent thermomechanical stability, ultra-low linear thermal expansion coefficient of 0.06 ppm °C −1 , and high thermal diffusion coefficient of 4.76 mm 2 s −1 at 25 °C and 3.72 mm 2 s −1 at 450 °C. This research not only reduces the free energy barrier from h -BN particles to bulk ceramics through facile multi-step physicochemical reaction, but also stimulates further exploration of multifunctional applications for bulk h -BN ceramics over a wide temperature range.
研究领域:
材料科学
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纳米技术
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Xiaobin Zhou,Dan Wang,Zhuo Wang,Zongqiang Zhu,Yinming Fan,Dunqiu Wang,Bihong Lv,Shengpeng Mo,Yanan Zhang,Yinian Zhu,Guohua Jing
Secondary amines are highly suitable candidates for constructing non-aqueous phase change absorbents (PCAs) that boast low viscosity and regeneration heat. However, the secondary amine-based PCAs often encounter the challenge of inadequate phase separation. This study proposed an innovative strategy of tailoring the polarity of absorption products to facilitate the controllable phase transition of the secondary amine-based PCA. Specifically, using aminoethylethanolamine (AEEA) as a regulator of product polarity to endow the 2-(ethylamino)ethanol (EAE)/pentamethyldiethylenetriamine (PMDETA)/dimethyl sulfoxide (DMSO) non-aqueous absorbent with tunable liquid–liquid phase transition behavior. The AEEA/EAE/PMDETA/DMSO (A/E/P/D) PCA realized a high CO 2 loading of 0.77 mol·mol −1 , with over 92% of the absorbed CO 2 being enriched in the CO 2 -rich phase, which exhibited a low viscosity of 13.83 mPa·s. The A/E/P/D PCA also possessed good reusability, maintaining a cyclic loading of 0.65 mol·mol −1 even after five absorption–desorption cycles. Analysis of the phase change mechanism indicated that AEEA reacted with CO 2 to form highly polar AEEA-derived products, which played a pivotal role in driving the phase transition of the A/E/P/D system. In brief, the AEEA-derived product easily combined with polar DMSO , creating a “polar sink” that continually attracted the medium-polar EAE-derived products. Consequently, these products clustered together to form the CO 2 -rich phase with less polar PMDETA being isolated to form the CO 2 -lean phase. Moreover, estimation of the regeneration heat demonstrated that the combined sensible heat and latent heat of A/E/P/D amounted to 0.32 GJ·ton −1 CO 2 , representing a significant reduction of 84% compared to 30 wt% MEA. This study provided a novel idea to manipulate the phase behavior of PCAs and offered a promising A/E/P/D PCA for energy-efficient CO 2 capture.
研究领域:
化学工程
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环境科学
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量子化学
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DOI
高影响因子
Laser & Photonics Reviews
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2024
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IF 9.8
Jianhua Xiao,Yang Wang,Jiaao Wu,Liu Yuan,Huiling Tai,Yadong Jiang
Tremendous research efforts are developed to suppress the reverse dark current ( J d ) and enhance the responsivity of organic photodiodes (OPDs). The functional layers of traditional OPDs usually follow the principle of energy level alignment to make unobstructed photo-carriers transport under reverse bias, but this inevitably leads to a large forward J d . Herein, a universal strategy is proposed to manipulate the carrier dynamics and effectively suppress the forward J d of OPDs, that is, tuning the energy level and electron traps of the anode interface layers (AILs). The bandgap and electron traps of typical organometallic chelate AIL (PEIE-Co) can be well controlled by adjusting the component ratio of PEIE and metal ions. The wide bandgap increases the carrier injection barrier under reverse and forward bias, endowing OPD with a much lower J d ; the electron traps induce hole tunneling injection by capturing photo-generated electrons under forward bias, thereby enabling the photomultiplication effect. The obtained OPD exhibits photoconductive/photomultiplication working mode at reverse/forward bias and the specific detectivity approaches ≈10 13 /10 12 Jones, showing promise for adaptively detecting faint and strong light. This study presents an intelligent strategy to achieve dual-mode OPDs, paving the way for the multifunctional development of photodetectors.
研究领域:
材料科学
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光电器件工程
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
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2024
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IF 4.1
Qi Liu,Tong Luo,Yiyan Yin,Yan Ouyang,Min Xiao,Hongxia Gao,Teerawat Sema,Zhiwu Liang
Amine degradation is one of the key issues that hampers the implementation of amine-based post combustion carbon capture technology. In this work, the oxidative degradation of fourteen structurally varied amines were experimentally studied by measuring the amine loss, alkalinity change, ammonia yield, and degradation product. There is a linear relationship between amine loss against alkalinity change and ammonia yield, indicating that the degradation product either loss reactivity for CO 2 absorption or emit out as the small molecule. The results have shown that amine stability generally increased with amine order and stronger steric hindrance effect. Most primary and secondary amines showed more than 40 % amine loss after 336 h degradation experiment, while most of tertiary amines showed less than 10 % amine loss. This may be due to the exposed amine groups of primary and secondary amines. The oxidative degradation mechanism was studied based on density functional theory (DFT) calculations.
研究领域:
化学工程
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环境科学
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材料科学
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产品关联
DOI
高影响因子
Advanced Science
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2024
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IF 14.3
Guangman Cui,Shaohui Deng,Biao Zhang,Manchun Wang,Zhousheng Lin,Xinyue Lan,Zelong Li,Guangyu Yao,Meng Yu,Jun Yan
The extracellular matrix (ECM) is critical for drug resistance in colorectal cancer (CRC). The abundant collagen within the ECM significantly influences tumor progression and matrix-mediated drug resistance (MMDR) by binding to discoidin domain receptor 1 (DDR1), but the specific mechanisms by which tumor cells modulate ECM via DDR1 and ultimately regulate TME remain poorly understand. Furthermore, overcoming drug resistance by modulating the tumor ECM remains a challenge in CRC treatment. In this study, a novel mechanism is elucidated by which DDR1 mediates the interactions between tumor cells and collagen, enhances collagen barriers, inhibits immune infiltration, promotes drug efflux, and leads to MMDR in CRC. To address this issue, a multistage drug delivery system carrying DDR1-siRNA and chemotherapeutic agents is employed to disrupt collagen barriers by silencing DDR1 in tumor, enhancing chemotherapy drugs diffusion and facilitating immune infiltration. These findings not only revealed a novel role for collagen-rich matrix mediated by DDR1 in tumor resistance, but also introduced a promising CRC treatment strategy.
研究领域:
肿瘤学
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药学
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生物医学工程
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分子生物学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Nano Materials
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2024
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IF 5.3
Hongrui Cheng,Wensong Wang,Haijiang Qiu,Fushan Li,Yuanhui Zheng
Due to their excellent optical performance, lead halide perovskite nanocrystals (PeNCs) have been widely used in optoelectronic devices. However, the presence of surface defects such as localized trap states severely hampers their practical application in optoelectronic fields. In this work, we have developed a simple method to reduce surface defects by introducing sulfuric acid after the nucleation of CsPbI3 PeNCs is complete. Sulfate ions effectively interact with the exposed metal lead ions on the surface of perovskite NCs, leading to surface passivation. This process represses nonradiative recombination and significantly enhances the luminescence efficiency of PeNCs. Moreover, the passivated CsPbI3 PeNCs with SO42– exhibit a lower overall energy-level structure compared to that of pristine CsPbI3 PeNCs, promoting improved electron injection. Benefiting from this highly effective passivation strategy, light-emitting diodes (LEDs) based on SO42–-passivated PeNCs exhibit an optimal external quantum yield of 9.94% and luminance of 2182 cd m–2, surpassing the performance of LEDs made from pristine PeNCs.
研究领域:
材料科学
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光电领域
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产品关联
DOI
高影响因子
Gels
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2025
·Vol. 11
·期 4
·242
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IF 5.3
Yicheng Zhu,Yichen Zhou,Xing Zhang,Pengju Pan,Jinjun Yang,Chengtao Yu
Ion-conductive gels (ICGs) are essential for achieving human–machine interfaces, bioelectronic applications, or durable wearable sensors. However, traditional solvent-dependent ICGs face bottlenecks such as dehydration-induced failure and challenges in achieving a balance between conductivity and mechanical properties. Here, this work developed a novel ternary ion-conductive xerogel (PEM-Li ICXG) system based on polyethylene glycol (PEG), poly (2-methoxyethyl acrylate) (PMEA), and LiTFSI. PEM-Li ICXGs exhibit high conductivity (2.7 × 10−2S/m), high adhesive capability (0.34 MPa), and solvent-free characteristics. Remarkably, the incorporation of ions into ICXGs simultaneously optimizes their mechanical performance. We demonstrate the application of ICGs in flexible sensors for strain or temperature sensing. The proposed synthesis strategy is straightforward and may further inspire the design of novel high-performance ICXGs.
研究领域:
材料科学
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生物电子学
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
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IF 8.1
Zhilv Chen,Tao Wang,Chao Li,Mengxiang Fang,Wei Chen,Ximing Hu,Wei Zhang,li Zhang,Wenyang Fan,Shaojuan Zeng
In recent years, a large number of studies have shown that amine based water-lean absorbents formed by amines and organic solvents exhibit high capture efficiency and low regeneration energy consumption in CO 2 capture. However, there is a lack of research that combines molecular level structure with macroscopic properties. In order to optimize the performance of amine based homogeneous water-lean absorbents by utilizing the properties of organic solvents, and to explore the correlation between the macroscopic properties of the absorbents (CO 2 capacity, removal efficiency, regeneration rate, regeneration efficiency, etc.) and the molecular structure of the absorbent components. We used experiments and molecular dynamics to study the linear terminal diamine DMEDA and non-proton polar solvent (DMF, DMPA, NMP, SFL, DMSO) system. It was found that the absorption and desorption performance of water-lean solvents was higher than that of aqueous solutions 30 wt% MEA and 30 wt% DMEDA, among which EFH with DMF as the solvent has better comprehensive performance. The molecular dynamics simulation was built to describe the solution structures of these absorbents. Through RDF calculations, the unique behavior of DMEDA in non-proton polar solvent was revealed on molecular level, it was found that organic solvents tend to aggregate with DMEDA molecules to form large molecular clusters, while CO 2 molecules may diffuse through ordered pore structures, resulting in a significant improvement in the capture performance. And it was found that there is a quantitative relationship between the intensity of intermolecular interaction between DMEDA and CO 2 and the removal efficiency change in DMEDA water-lean absorbents. A functional relationship was fitted, and a preliminary and rapid method for determining capture performance through molecular dynamics was proposed.
研究领域:
化学工程
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环境科学
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分子模拟
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）