最新刊期
卷 56 ， 期 7 ， 2025
- 摘要：Ultrathin and flexible organic solar cells (UF-OSCs) demonstrate great potential in applications such as wearable electronics and flexible display technology due to their flexibility and a high power-to-weight ratio. However, the power conversion efficiencies (PCEs) of UF-OSCs still lag behind those of their corresponding rigid counterparts, which remains the most critical factor hindering the commercialization process of UF-OSCs. In order to enhance the performance of UF-OSCs, researchers worldwide have carried out in-depth research on the materials and device structures. Ultrathin and flexible transparent electrode (UFTE) is a key component of the device, and its performance has a direct impact on the overall efficiency and stability of the device. This review takes UFTE as the starting point and combines various strategies such as interface layer and device structure engineering to conduct a detailed analysis of the latest research progress of UF-OSCs. Moreover, the potential applications of large-area UF-OSCs are briefly introduced. Finally, the challenges faced by the further development of UF-OSCs are proposed, and its application prospects in the field of flexible power sources are prospected.关键词：Ultrathin and Flexible Organic Solar Cells;Ultrathin and Flexible Transparent Electrode;Power-to-weight ratio;Mechanical stability349|461|0更新时间：2025-07-08
- 摘要：Developing the semitransparent solar cells is crucial to large-scale solar energy utilization in modern city. The photoactive layer of organic solar cells (OSCs) is composed of the donor and acceptor materials with complementary absorptions, where reducing the donor content is facile to enhance the visible-light transmittance. However, the donor dilution approach inevitably inhibits the photo-charge generation and collection, which leads to the critical trade-off between optical transparency and power conversion efficiency (PCE) in semitransparent OSCs (ST-OSCs). Herein, we briefly review the recent progresses on this issue, especially focusing on the molecularly doped ST-OSCs. We try to clarify two pivotal questions: (1) How to achieve effective molecular doping in organic photoactive layer? (2) How does molecular doping optimize photovoltaic process in the suboptimal blend film morphology? Following by the two questions, the basic knowledge of molecular doping is introduced, including doping mechanism (oxidation/reduction dopants and acid/base dopants) and representative P-type and N-type molecular dopants. Next, effective doping requires precise control over the distribution of dopants within the active layer, namely P-type dopants in the donor material and N-type dopants in the acceptor material. The concept of sequential doping processes and using dopant's carrier, like solid solvent for dopants are explored to enhance electrical performance. In response to the reduction in donor content and the obstruction of hole transport, molecular doping improves in two aspects: trap filling and built-in electric field profiling, which enhances the fill factor (FF) and optimizes charge collection. As the donor content further decreases below 10%, exciton loss by failing to diffuse to the heterojunction dominates the PCE decay. At this situation, molecular doping can mitigate the exciton loss by enhancing the local electric field and inducing entropy gain at heterojunction. At the end of this review, the future directions of molecularly doped ST-OSCs are briefly discussed, including the doping efficiency, bipolar doping, and high doping concentration achievement.关键词：Organic solar cells;Molecular doping;Semitransparent devices;Photoelectric conversion239|61|0更新时间：2025-07-08
Review
- 摘要：Developing polymer donors with both excellent device performance and good processability is an effective approach to advancing the commercialization of organic solar cells. D18 has attracted considerable interest from researchers due to its high efficiency, but its strong aggregation behavior limits its processability with non-halogen solvents. This paper introduces a structural modification method by incorporating flexible alkyl-bridged units into the conjugated backbone of the polymer donor D18. By adjusting the length of the flexible alkyl chains and the content of the alkyl-bridged units, two novel polymer donors, D18-3C-5% and D18-4C-5%, with significantly improved solubility were synthesized. Test results show that when the flexible alkyl chain contains four carbon atoms and the content of flexible alkyl-bridged units in the polymer backbone is 5%, the resulting polymer donor D18-4C-5% achieves an outstanding power conversion efficiency (PCE) of 17.32% when devices are fabricated with the non-halogen solvent, o-xylene. The device exhibits an open-circuit voltage (VOC) of 0.87 V, a short-circuit current density (JSC) of 25.53 mA·cm-2, and a fill factor (FF) of 0.78. The reduced molecular aggregation and crystallinity of D18-4C-5% significantly improve its solubility in non-halogen solvents, demonstrating excellent device processability. Large-area flexible devices (1 cm²) based on D18-4C-5%:L8-BO can also achieve an excellent PCE of 14.00%. This work highlights the critical role of the flexible chain-induced aggregation reduction strategy in improving the processability of polymer donors and addresses the limitations of highly aggregated polymer donor materials in large-area solution processing. This study has significant implications for the further development of high-efficiency organic solar cells.关键词：Organic solar cells;Flexible alkyl-bridged units;Molecular aggregation;Solubility;Flexible large-area devices160|51|0更新时间：2025-07-08
- 摘要：In order to fulfill the requirements of future industrialization, organic photovoltaics (OPVs) necessitate improved power conversion efficiency (PCE) and optimized manufacturing processes. Anode interfacial layer (AIL) constitutes a vital element within the OPV structure.However, the most widely used PEDOT:PSS anode interficial layer exhibits hygroscopic and acidic nature, which compromise the stability of the device. Herein, this study employs chlorendic acid small molecule in situ self-assembly as the anode interfacial layer for organic photovoltaics and fabricates binary single-junction forward OPV devices based on the PM6:BTP-eC9 active layer using the blade coating method. Compared to traditional PEDOT:PSS-based devices (with a photoelectric conversion efficiency of 17.6% and a short-circuit current density of 27.0 mA·cm-2, devices based on 6C2A exhibit higher photoelectric conversion efficiency (18.2%) and short-circuit current density (27.7 mA·cm-2). This enhancement is attributed to the 6C2A anode interfacial layer, which strengthens absorption, improves exciton dissociation efficiency, facilitates charge carrier extraction, and suppresses charge carrier recombination. Also, the 6C2A anode interficial layer shows great stability when exposed to air of 25% relative humidity, overcoming the hygroscopicity of traditional PEDOT:PSS. Furthermore, the efficiency of the 6C2A-based devices with an area of 2 cm2 reaches 16.2%, outperforming PEDOT:PSS-based devices (15.7%).The in situ self-assembly fabrication method can simplyfing the technique of production, streamlining manufacturing, reducing costs, and enhancing scalability. This study provides a new approach for the high-throughput, continuous industrial production of organic solar cells by substituting traditional PEDOT:PSS with self-assembled anode interficial layer.关键词：Organic photovoltaics;Anode interfacial layers;Chlorendic Acid;Self-assembled material;Blade-coating295|132|0更新时间：2025-07-08
- 摘要：Based on the simple and commercially available starting material 2-bromo-4-cyanothiazole, we have for the first time successfully designed and synthesized two novel polymer donor materials, PBTTzCN and PBTTzCN2Cl, incorporating 4-cyanothiazole as the electron-withdrawing acceptor unit. The rational molecular design of these polymer donors takes advantage of the strong electron-withdrawing nature of both the cyano (CN) and thiazole units, which act synergistically to effectively lower the highest occupied molecular orbital (HOMO) energy levels while simultaneously broadening the optical band gaps of the resulting polymers. These characteristics are crucial for optimizing the energy level alignment and absorption properties in organic photovoltaic (OPV) applications. To systematically evaluate the photovoltaic performance of these newly developed materials, we fabricated bulk heterojunction (BHJ) solar cells using PBTTzCN and PBTTzCN2Cl as polymer donors in combination with the well-established non-fullerene small-molecule acceptor L8-BO. The active layer film based on the PBTTzCN:L8-BO blend demonstrated a favorable nanoscale phase separation morphology, which promotes efficient charge carrier transport and exciton dissociation, resulting in an outstanding power conversion efficiency (PCE) of 14.22%. In stark contrast, the PBTTzCN2Cl:L8-BO-based active layer exhibited a significantly lower PCE of only 2.02%. This drastic reduction in efficiency is primarily attributed to the much deeper HOMO energy level of PBTTzCN2Cl compared to that of L8-BO, which disrupts the energetic driving force necessary for exciton dissociation and leads to inefficient charge generation and inferior electron transport properties. Consequently, the poor photovoltaic performance of PBTTzCN2Cl:L8-BO highlights the critical impact of molecular energy level alignment on the overall efficiency of organic solar cells.关键词：Organic solar cells;4-Cyanothiazole;Polymer donor materials;Phase separation;Simple and cost-effective330|110|0更新时间：2025-07-08
- 摘要：Side-chain engineering, as a simple and universal method of chemical modification, has been widely used in the molecular design and performance optimization of organic photovoltaic materials. In this work, two novel A-DA'D-A small molecule acceptors (SMAs), named K10 and K11, were synthesized by introducing β-substituted 2-ethylhexyloxy thienyl or phenyl conjugated outer side chains, and the effects of different conjugated side chains on physicochemical properties, molecular aggregation, and the photovoltaic performance of the SMAs was systematically investigated by comparison with previously reported acceptors K2 (T2EH) and K5 (P2EH). As a result, the introduction of oxygen atoms into the conjugated side chains can significantly change the energy level distribution and lead to a significantly red-shifted absorption range for SMAs. In addition, oxygen atoms can adversely affect molecular arrangement and stacking, resulting in poor charge transport ability. Therefore, the photovoltaic performances of K10 and K11 are inferior to those of K2 and K5. Eventually, the organic solar cell (OSC) with low-cost polymer PTQ10 as donor and K2 as acceptor achieved an impressive power conversion efficiency (PCE) of 18.94%, owing to the higher and more balanced carrier mobility, more efficient exciton dissociation, and charge collection. This work confirms the importance and feasibility of fine-tuning the outer side chains of A-DA'D-A type SMAs to enhance the photovoltaic performance.关键词：Organic solar cells;Small molecule acceptors;Side chain engineering;Molecular aggregation;Hole transfer197|84|0更新时间：2025-07-08
- 摘要：The ternary organic solar cells are employed to regulate absorption, film morphology and energy loss, thereby improving the photoelectric conversion efficiency. However, the challenge remains in selecting the third component. High crystallinity of the multifluorinated polymer and good compatibility with the morphology of fluorinated non-fullerene acceptor enable the utilization of the fluorinated polymer PFNT-Cl as the third component added into the PNTB-HD:N3 system. An addition of 20 wt% can increase the open-circuit voltage, short-circuit current and fill factor, increasing the photoelectric conversion efficiency from 17.77% to 18.45% and demonstrating better device stability. The study reveals that the addition of mulfifluorinated polymer improves the charge carrier mobility of the blend films, induces the formation of fibrous film morphology. By introducing the multifluorinated polymer PFNT-Cl into other classic systems, such as PM6:eC9 and D18:L8-BO, the photovoltaic conversion efficiencies have been respectively increased from 17.26% to 17.93% and from 18.95% to 19.59%. This work highlights the use of multifluorinated polymer as the third component as an efficient strategy for preparing high-performance ternary organic solar cells.关键词：Organic solar cells;Multifluorinated Polymer;Morphology optimization;Ternary device129|47|0更新时间：2025-07-08
- 摘要：The remarkable progress of organic solar cells (OSCs) has been driven by the rapid advancement of non-fullerene acceptors, which has in turn raised high demands for polymer donors. As a simple and effective approach, the random ternary copolymerization strategy optimizes existing polymers to enhance their energy levels, absorption, crystallinity, and aggregation behavior. A series of polymer donors LTz-0, LTz-5, LTz-10, and LTz-15 containing different ratios of ester-functionalized thiazole (E-Tz) were designed and synthesized. As the E-Tz content increases, the polymer donor exhibits ideal temperature-dependent aggregation characteristics, crystallinity decreases, and its HOMO energy level gradually deepens, effectively regulating the phase separation of the blend film and increasing the open circuit voltage (VOC). Finally, the device based on LTz-10:Y6 exhibits compact interpenetrated networks and excellent charge transport properties. Its power conversion efficiency (PCE) reaches 18.02%, which is 13% higher than that of LTz-0, marking it one of the highest efficiencies among the reported lactone based copolymers. The results shows that the addition of E-Tz can optimize the film morphology and significantly improve the final photovoltaic performance.关键词：Organic solar cells;Random ternary polymer;Polymer donor materials;Ester-functionalized thiazole210|114|0更新时间：2025-07-08
- 摘要：The efficient and stable cathode interface layer plays a vital role in improving the performances of organic solar cells (OSCs). It not only facilitates efficient charge extraction and transport but also suppresses non-radiative recombination at the interface. Recently, naphthalimide has been used as a cathode interface material of OSCs because of its simple molecular structure and easy modification, which enables convenient synthesis and tunability of properties through chemical adjustments. Therefore, in this paper,a naphthalimide-based conjugated molecule incorporating a benzo[1,2-b:4,5-b']dithiophene unit was designed and synthesized, namely, 6'-(4,8-bis(5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b']dithiophene-2,6-diyl)bis(2-(3-(1H-imidazole-1-yl)propyl)-1H-benzo[de]isoquinoline-1,3(2H)-dione) (NBDT-M). The introduction of the benzo[1,2-b:4,5-b']dithiophene unit was intended to optimize the electronic structure and molecular packing. NBDT-M exhibits excellent film-forming ability, which is crucial for device fabrication. It also shows high thermal stability, ensuring the device remains stable during operation. The up-shifted lowest unoccupied molecular orbital (LUMO) energy level is beneficial for better energy-level alignment with the active layer. The large optical energy band gap reduces optical absorption losses, and the low surface roughness minimizes interface defects. Finally, NBDT-M modified OSCs yield a power conversion efficiency (PCE) of up to 18.3%, significantly higher than that of the PDI-M based device (16.5%).关键词：Organic solar cell;Cathode interface material;Naphthalimide;Benzodithiophene159|41|0更新时间：2025-07-08
- 摘要：Bacterial infections pose a serious threat to human health, and the emergence of bacterial resistance has become a major challenge to global public health. Therefore, it is crucial to develop novel and efficient antibacterial materials. Antimicrobial polyaminoacids are gaining considerable attention due to their broad-spectrum antibacterial activity, high efficiency, resistance to bacterial drug resistance, and biodegradability. In this study, a dipropyl-protected cyclic lysine (DPCL) monomer was synthesized from lysine, a biologically abundant resource, utilizing cyclic lysine, which facilitates modular reactions. The quaternized poly(DPCL), a cationic polymer prepared through anionic ring-opening polymerization of DPCL followed by quaternization, demonstrated significant antibacterial activity against Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus), along with good biocompatibility. These properties endow it with broad application potential as an antibacterial polyaminoacid material.关键词：Lysine;Polyamide;Ring-opening polymerization;Antibacterial150|97|0更新时间：2025-07-08
- 摘要：In this study, a new DLP-compatible photosensitive resin based on the alkyne-capped four-arm polycaprolactone (4sPCL)-pentaerythritol tetrakis(mercaptoacetic acid) ester (PETMA) photoclick chemical cross-linking system was developed in response to the problems of the high rigidity of the traditional polycaprolactone (PCL) materials and the limited variety of photosensitive resins for digital light processing (DLP) technology. The light-curing uniformity, mechanical properties and thermal behavior of the scaffolds were systematically investigated by regulating the molecular weight and addition concentration of 4sPCL. The experiments showed that when Mn=5000 g/mol and 10 wt% of 4sPCL were used, the prepared scaffolds possessed soft-tissue-matched compressive strength ((86.1±8.1) kPa), fast light-curing properties (20-25 s) and excellent shape recovery. This study provides an innovative solution for the construction of soft tissue engineering scaffolds with precise structural modulation and biomimetic mechanical properties.关键词：Polycaprolactone;Star structure;Click chemistry;3D Printing;Soft tissue engineering164|67|0更新时间：2025-07-08
- 摘要：Bacterial infections constitute a substantial proportion of human morbidity and mortality, posing significant threats to public health and imposing considerable socioeconomic burdens annually. Although traditional antibiotics have a positive effect on killing bacteria, their therapeutic efficiency is greatly reduced due to the emergence of antibiotic-resistant pathogens. Therefore, there is an urgent need to seek an alternative treatment approach against antibiotic-resistant bacterial infections. Recently, some new antibiotics-free and non-invasive antibacterial approaches have been developed, including photothermal therapy, photodynamic therapy and ultrasound-triggered sonodynamic therapy (SDT). Among these approaches, SDT is the most promising bacterial infection treatment modality due to its deep tissue penetration capability and effectiveness against antibiotic-resistant bacteria. In this work, we propose a combined sonodynamic-antibiotic therapy based on poly(ε-caprolactone)-block-poly(glutamic acid) polymer vesicle. The hydrophilic cavity and the hydrophobic membrane of polymer vesicles can function as different modules for the simultaneous delivery of a broad-spectrum antibiotic drug ceftriaxone (CRO) and a photosensitizer chlorin e6 (Ce6). These multifunctional nanoplatforms exhibited enhanced antibacterial activity and could efficiently generate reactive oxygen species (ROS) upon ultrasound activation. In vitro antibacterial results indicated that under ultrasound exposure, the polymer vesicles simultaneously loaded with Ce6 and CRO exhibited a remarkable antibacterial effect against CRO-tolerant Escherichia coli strains, reducing the total colony count from 4.69×109 CFU/mL to 3.17×102 CFU/mL. The construction of this multifunctional antibacterial platform combining sonodynamic therapy and antibiotics can achieve synergistic antibacterial effects and is expected to lay an experimental foundation for the research and development of new antibacterial drugs.关键词：Vesicles;Sonodynamic antibacterial therapy;Antibiotic-resistant bacteria;Antibiotics;Sonosensitizer166|99|0更新时间：2025-07-08
- 摘要：Aliphatic polyketone is a class of high-performance polymer materials obtained through the copolymerization of ethylene with carbon monoxide (CO), which has a wide range of applications. However, the completely alternating structure suffers from narrow processing temperature window because of its high melting temperature (Tm) of 260 ℃ and a close decomposition temperature of 270 ℃. Nonalternating copolymerization is a very promising method to circumvent this processing issue, and enhancing CO tolerance of catalyst and weakening the tendency for CO migration insertion are the key to nonalternating preference. In the contribution, a series of N-bridged phosphine carbonyl (PNCO)-Pd(II) complexes were designed and employed for copolymerization of ethylene with CO, affording nonalternating polyketones with controllable carbonyl contents and melting temperatures. The installations of benzyl on amine, 2,6-dimethoxyl phenyl on phosphorus and 4-trifluoromethylphenyl on carbonyl moieties were discovered to be highly reactive for producing nonalternating polyketones with carbonyl content of 44.6%, thereby lowing the Tm values to 223 ℃ effectively. This work provides a new catalytic system for the nonalternating polyketone field.关键词：Coordination polymerization;Ethylene;Carbon monoxide;Nonalternating copolymerization;Palladium catalysts155|27|0更新时间：2025-07-08
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Direct Solid State Polymerization and Structural Properties of High Heat Resistant Copolyamide PA56T
摘要：To address the issues of diamine volatilization, low yield, and difficulty in increasing molecular weight during the direct solid state polymerization (DSSP) of high-temperature-resistant polyamides, this study first used dimethyl terephthalate (DMT) to react with excess 1,5-pentanediamine (PDA) and 1,6-hexanediamine (HMDA) to prepare diamides diamines 5T5 and 6T6. Then, 5T5 and 6T6 were reacted with terephthalic acid (PTA) to form different compositions of 5T5T/6T6T mixed salts. Finally, a series of high-viscosity, high-temperature-resistant copolyamides PA56T were successfully synthesized through direct solid state polymerization from the mixed salts. The structure and properties of PA56T were systematically investigated using FTIR, NMR, DSC, and TGA. The results indicate that using diamides diamines as amide salts can effectively prevent the volatilization of diamines during the direct solid-state polymerization process, thereby significantly improving the yield, molecular weight, and quality of the high-temperature-resistant copolyamides. By changing the composition, the comprehensive properties of the copolyamide PA56T can be effectively regulated. Its melting point (Tm) first decreases and then increases with the increase in 6T content. Copolymerization enhances the thermal stability of the high-temperature-resistant polyamides. The copolymer PA56T-40, with 40 mol% 6T content exhibits excellent comprehensive properties, with a melting point (Tm) of 310 ℃, a 5 wt% weight loss temperature (Td5) of 440 ℃, and a tensile strength of 95.2 MPa.关键词：High heat resistant polyamide;Copolyamide;Diamide diamine;Direct solid state polymerization;Mechanical properties117|167|0更新时间：2025-07-08 - 摘要：To prepare a flexible wearable strain sensor with high sensitivity, wide effective monitoring range, and good stability, thermoplastic polyurethane melt-blown nonwoven material (TPU MB) was selected as the flexible substrate. Carbon black (CB) and molybdenum disulfide (MoS2) nanosheets were assembled layer by layer on the surface of TPU MB via a simple mechanical stirring to obtain CB/MoS2/CB@TPU MB flexible strain sensor. The influence of CB concentration on the sensor's sensing performance was discussed. Benefited from the synergistic effect between MoS2 and CB, when the concentration of CB is 4 mg/mL, the prepared CB4/MoS2/CB4@TPU MB flexible strain sensor exhibits a wide effective monitoring range (0%-530%), high sensitivity (GF=2727.6), rapid response time and recovery time (220 ms and 396 ms) and excellent durability (1000 tensile cycles). This sensor successfully applied to monitor large-scale human movement, subtle facial expression changes, and different vocal cord vibration modes, and has a broad application prospect in the field of smart wearable devices.关键词：Thermoplastic polyurethane;Melt-blown nonwovens;Molybdenum disulfide;Carbon black;Flexible strain sensor154|80|0更新时间：2025-07-08
- 摘要：As high-water absorption and high-water retention polymers, hydrogels are widely used in many fields such as smart materials, water absorption materials, drug delivery, slow release, skin dressings, and biomedicine. However, the traditional hydrogels like polyacrylamide (PAAm) have the limitation of low mechanical strength and poor stability, which greatly limits the development of hydrogels. The commonly used methods for increasing the strength of hydrogels include the construction of double-network structure hydrogels, the introduction of chemical groups to modify hydrogels, the introduction of nanoparticles to form nanocomposite hydrogels, and so on. In this work, the mechanical properties of PAAm hydrogels are mainly improved by introducing hydrophilic silica (SiO2) nanoparticles. The results show that SiO2 nanoparticles, as multi-functional crosslinking agents, are physically adsorbed or chemically bonded into the hydrogel matrix to enhance the 3D network structure of the hydrogel. In addition, hydrogen bonds formed between the silicon hydroxyl group on the surface of SiO2 nanoparticles and the amide group on the polymer chain, which increases the crosslinking density of the hydrogel and greatly improves the compression performance. The SiO2 nanoparticles are hydrophilic, which will increase the water absorption of the composite hydrogel and increase the swelling rate, but the swelling rate will decrease due to the limitation of the three-dimensional mesh of the hydrogel. The energy storage modulus of composite hydrogels will gradually increase due to the denser three-dimensional mesh structure, but the loss modulus will increase due to the increase of internal structure friction, but also because of the denser mesh, the increase of loss modulus will be limited. In general, the addition of SiO2 nanoparticles has a certain significance for improving the viscoelasticity of hydrogels.关键词：Acrylamide;SiO2 nanoparticles;Composite hydrogel;Viscoelasticity161|75|0更新时间：2025-07-08
- 摘要：Creep behavior is critical for the service applications of materials. Creep analysis tests can effectively reflect the viscoelastic properties of polymer materials and evaluate the mechanical relaxation behavior of polymer complexes over long time scales. In this work, polyacrylic acid (PAA) and polyethylene oxide (PEO) were used to construct hydrogen-bonded polymer complexes, and covalent cross-linking and metal ion coordination were used to strengthen the hydrogen bond network. The influence of temperature and humidity, the two main environmental parameters, on the creep behavior of these complexes were investigated. With the increase in temperature or humidity, the creep deformation of the three types of films also increases. The creep compliance master curve was constructed by time-humidity superposition and time-temperature superposition respectively. The temperature shift factor (aT) conforms to the Williams-Landel-Ferry (WLF) equation. The humidity shift factor (aw) is shown as a piecewise linear dependence of water ratio. The coupling of environmental factors greatly affects the properties of hydrogen-bonded complexes. Further combined with the superposition of humidity and temperature on time, the main curve of a longer time scale was constructed, and the mechanical relaxation behavior under a long time scale was analyzed and expounded, so as to guide its practical service and application.关键词：Time-temperature superposition;time-humidity superposition;Mechanical relaxation;Viscoelasticity116|80|0更新时间：2025-07-08
- 摘要：Using dissipative particle dynamics simulation combined with our stochastic reaction model, we delve into the mechanisms and controlling factors of self-assembled structures formed by the solvophilic/solvophobic chain-grafted patchy nanoparticles via the polymerization-induced self-assembly strategy, i.e., PISA. The results indicate that PISA exhibits unique advantages in controlling the morphology of assemblies compared to conventional self-assembly methods. Furthermore, the packing fraction of nanoparticles significantly affects the morphologies obtained by PISA, with the self-assembled structures evolving from simple spherical micelles to complex layered network structures as the nanoparticle's packing fraction increases. Finally, based on the analysis of the phase diagram, we predict the formation tendencies of different self-assembled structures under specific conditions. This study investigates the factors that influence the formation of different assembly morphologies of patchy nanoparticles. These results are expected to provide theoretical guidance for the experimental synthesis and industrial production of nanocomposites with a variety of morphologies.关键词：Polymerization-induced self-assembly (PISA);polymer-grafted nanoparticles;Packing fraction;Stochastic reaction model;Dissipative particle dynamics (DPD)189|282|0更新时间：2025-07-08
- 摘要：To improve the interfacial bonding ability of aramid fiber reinforced thermoplastic resin matrix damping composite materials,this study treated the surface of aramid fibers (PPTA) with CaCl2 ethanol solution and treated the surface of polycarbonate (PC) sheets with dichloromethane and hydrochloric acid solution. Methylvinyl silicone rubber (VSI) was dissolved in dichloromethane to prepare a damping slurry. Using the bridging effect of a silane coupling agent (KH560), chemical co-grafting was performed on the modified PPTA, PC, and VSI, resulting in the preparation of embedded co-grafted aramid fiber-reinforced carboxylic polycarbonate damping composites. The properties of the composite material were characterized by FT-IR, SEM, EDS, H extraction, interlayer shear, and free vibration attenuation tests. The results showed that after KH560 co-grafting, the H extraction force of the specimen increased by 137%, and the interlayer shear stress increased by 74%, demonstrating a significant improvement in the interfacial bonding performance of the materials. Furthermore, when the damping layer was relatively thin, as the thickness of the damping layer increased, the vibration stability of the composite specimens improved, resulting in better damping effects. The conclusions will provide a reference for the design and manufacture of the fiber reinforced thermoplastic resin matrix damping composite material.关键词：Embedded co-grafting fiber reinforced thermoplastic resin matrix damping composite material;Surface modification;Interface performance;Interlayer shear force;Damping128|49|0更新时间：2025-07-08
Research Article
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