Synthetic Metals最新文献_第7页

Fabrication of electrically conductive and flame-retardant leather through ionic liquid assisted in-situ polymerization of aniline 离子液体辅助苯胺原位聚合制备导电阻燃皮革

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Synthetic Metals

Pub Date : 2025-10-30 DOI: 10.1016/j.synthmet.2025.118009

Renganath Rao Ramesh , Narmatha Nataraj , Nishad Fathima Nishter , Raghava Rao Jonnalagadda

Integrating electrical conductivity and flame-retardant properties into leather is a promising advancement that will enhance its functionality for modern applications. This study attempted an innovative approach utilizing ionic liquid (IL)-assisted in-situ polymerization of aniline to fabricate electrically conductive and flame-retardant leather. The use of imidazolium-based ILs aided in modulating the size of polyaniline (PANI) during the polymerization process, improving its penetration and uniform distribution within the leather matrix. The electrical resistance of control leather was reduced from 389.4 MΩ to 1.5 MΩ after three cycles of in-situ polymerization of aniline. Additionally, PANI-leather demonstrated enhanced flame-retardant properties, with an 82.8 % reduction in flammability degree compared to untreated leather, owing to its high nitrogen content and organic core promoting compact char formation. Characterization through XRD, SEM, and XPS confirmed the uniform distribution of PANI throughout the cross-sectional area of the leather matrix. These findings suggest that IL-assisted PANI deposition offers a scalable, cost-effective method to fabricate smart leathers with multifunctional properties, broadening their applicability in wearable electronics, strategic sectors, automotive interiors, and protective gear.

将导电性和阻燃性集成到皮革中是一项有前途的进步，将增强其在现代应用中的功能。本研究尝试了一种利用离子液体（IL）辅助苯胺原位聚合制备导电阻燃皮革的创新方法。咪唑基苯胺的使用有助于在聚合过程中调节聚苯胺（PANI）的尺寸，改善其在皮革基体中的渗透和均匀分布。苯胺原位聚合三次后，对照革的电阻由389.4 MΩ降至1.5 MΩ。此外，聚苯胺皮革表现出增强的阻燃性能，与未经处理的皮革相比，可燃性降低了82.8 %，这是由于其高氮含量和有机核心促进致密炭的形成。通过XRD、SEM和XPS表征，证实了聚苯胺在皮革基体横截面积上的均匀分布。这些发现表明，il辅助聚苯胺沉积提供了一种可扩展的、具有成本效益的方法来制造具有多功能特性的智能皮革，扩大了其在可穿戴电子产品、战略部门、汽车内饰和防护装备方面的适用性。

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引用次数: 0

Preparation and wave-absorbing properties of Zn-MOFs derived porous carbon and its application in polyester fabric Zn-MOFs衍生多孔碳的制备、吸波性能及其在涤纶织物中的应用

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Synthetic Metals

Pub Date : 2025-10-28 DOI: 10.1016/j.synthmet.2025.118008

Haidong Xu , Hong Pan , Lihui Xu , Feixiang Wang , Wanchao Sun , Yong Shen , Hong Zhao , Chengjian Yao , Mst Nowshin Farah

Metal-organic frameworks (MOFs) have shown great potential in the field of wave absorption due to their unique structure and controllability. In this study, Zn(NO₃)₂·6 H₂O and 2-methylimidazole were used to synthesize Zn-MOFs multi-front catalysts by a simple method. The electromagnetic parameters and electromagnetic wave absorption properties of Zn-MOFs derived carbon were adjusted by controlling different temperatures and particle sizes. By comparing the reflection loss of Zn-MOFs derived carbon at different preparation conditions, it was found that the optimal reflection loss (RL) value of the Zn-MOFs derived carbon N3(800) at a thickness of 3.00 mm reached −35.50 dB at 11.2 GHz, and the effective absorption bandwidth could reach 5.28 GHz. Secondly, the obtained sample of Zn-MOFs derived carbon N3 (800) was coated on the fabric in practical application. Then, the synthesized Zn-MOFs derived carbon absorber was applied on the polyester fabric by the coating method. When the frequency was 11 GHz and the effective absorption bandwidth was 3.2 GHz, the optimal reflection loss value was −31.1 dB. After friction, the optimal reflection loss value of carbon coated polyester was −27.8 dB and the effective absorption bandwidth was 2.3 GHz. The optimal reflection loss value of prepared polyester after water washing was −29.5 dB, and the effective absorption bandwidth was 2.48 GHz. The preparation of an absorption material with excellent absorption effect and good fastness on fabrics is of great value in practical applications.

金属有机骨架材料以其独特的结构和可控性在吸波领域显示出巨大的潜力。本研究以Zn(NO3)2·6 H2O和2-甲基咪唑为原料，采用简单的方法合成了Zn- mof多前端催化剂。通过控制不同的温度和粒度，可以调节zn - mof衍生碳的电磁参数和电磁波吸收性能。通过比较不同制备条件下Zn-MOFs衍生碳的反射损耗，发现厚度为3.00 mm的Zn-MOFs衍生碳N3（800）在11.2 GHz处的最佳反射损耗（RL）值为−35.50 dB，有效吸收带宽可达5.28 GHz。其次，将得到的zn - mof衍生碳N3（800）样品在实际应用中涂覆在织物上。然后，将合成的Zn-MOFs衍生碳吸收剂通过涂层法涂覆在涤纶织物上。当频率为11 GHz，有效吸收带宽为3.2 GHz时，最优反射损耗值为- 31.1 dB。摩擦后，碳包覆聚酯的最佳反射损耗值为−27.8 dB，有效吸收带宽为2.3 GHz。制备的聚酯水洗后的最佳反射损失值为- 29.5 dB，有效吸收带宽为2.48 GHz。制备一种对织物具有优良吸收效果和良好牢度的吸收材料，具有重要的实际应用价值。

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引用次数: 0

Facile two-step synthesized cobalt disulfide/polyaniline nanocomposite with excellent capacitive performance for supercapacitor systems 两步合成的二硫化钴/聚苯胺纳米复合材料具有优异的电容性能，可用于超级电容器系统

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Synthetic Metals

Pub Date : 2025-10-27 DOI: 10.1016/j.synthmet.2025.118007

Farzaneh Abdollahi, Mona Farahpour , Reza Ansari

Due to their high power density, long lifespan, and safety, supercapacitors (SCs) are well-suited for various applications. Materials with high porosity, strong redox activity, and abundant electrochemically active sites are promising candidates for next-generation supercapacitors. In this study, nickel foam was used as a substrate for a rapid two-step hydrothermal and cyclic voltammetry technique to produce CoS₂ nanocrystals and electrochemically deposited polyaniline. X-ray diffraction (XRD) tests verified that CoS₂ had a cubic structure, whereas transmission electron microscopy (TEM) studies demonstrated the fabrication of nanostructures consisting of CoS₂/PANI. The specific capacitance of pristine PANI was determined to be 1275.47 F g⁻¹, while that of CoS₂ was 1064.76 F g⁻¹, with the ability to maintain capacitances of 90.21 % and 82.14 % after 3000 cycles, respectively. The CoS₂/PANI electrode exhibited a high capacitance of 2443.33 F g⁻¹ at a current density of 1 A g⁻¹ and capacitance retention of 93.04 % at a current density of 8 A g⁻¹. Subsequently, asymmetric cell devices using CoS₂/PANI and activated carbon were fabricated. The CoS₂/PANI//AC system exhibited excellent charge storage capability with a specific capacitance of 148.5 F g⁻¹. It also demonstrated a maximum energy density of 52.8 Wh kg⁻¹ and a high power density of 4.8 kW kg⁻¹. The analysis in this study demonstrates that conductive materials, such as polyaniline, can enhance the electrochemical performance of metal sulfides, such as CoS₂, and benefit from synergistic effects.

由于其高功率密度，长寿命和安全性，超级电容器（sc）非常适合各种应用。具有高孔隙率、强氧化还原活性和丰富的电化学活性位点的材料是下一代超级电容器的有希望的候选者。本研究以泡沫镍为衬底，采用快速两步水热法和循环伏安法制备了CoS2纳米晶体和电化学沉积的聚苯胺。x射线衍射（XRD）测试证实了CoS2具有立方结构，而透射电子显微镜（TEM）研究证实了由CoS2/PANI组成的纳米结构的制备。原始PANI的比电容为1275.47 F g−1，CoS2的比电容为1064.76 F g−1，经过3000次循环后，其电容保持率分别为90.21 %和82.14 %。CoS2/PANI电极在电流密度为1 a g−1时具有2443.33 F g−1的高电容，在电流密度为8 a g−1时具有93.04 %的电容保持率。随后，利用CoS2/PANI和活性炭制备了非对称细胞器件。CoS2/PANI//AC系统具有优异的电荷存储能力，比电容为148.5 F g−1。最大能量密度为52.8 Wh kg−1，高功率密度为4.8 kW kg−1。本研究的分析表明，导电材料如聚苯胺可以增强金属硫化物如CoS2的电化学性能，并受益于协同效应。

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引用次数: 0

Tuning integration mechanisms of bismuth sulfide nanoflowers on reduced graphene oxide coated carbon fabric for enhanced photocatalytic performance 硫化铋纳米花在还原氧化石墨烯涂层碳织物上的调谐集成机制以增强光催化性能

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Synthetic Metals

Pub Date : 2025-10-26 DOI: 10.1016/j.synthmet.2025.118006

Usama Khalid , Mumtaz Ali , Aima Sameen Anjum , Muhammad Bilal Qadir , Kyung Chul Sun

The facile synthesis of visible light active photocatalyst having low toxicity is highly desirable, while it efficiency is confined due to charge carrier recombination. Therefore, researchers fabricate photocatalysts with a heterojunction for charge separation via facile solvothermal synthesis. In this regard, integration of heterojunction-forming constituents remained unexplored, which can be tuned to enhance electrochemical performance. In this study, the influence of different integration mechanisms was analysed for the synthesis of visible light active photocatalysts for the degradation of dye. First, solvothermally synthesized bismuth sulfide-nanoflowers (BiS nF) were integrated over carbon fabric. These approaches include direct growth, binder assisted, and dip-dry (cycles of dipping and drying in BiS nF solution) to optimize integration. The directly grown photocatalyst showed the highest degradation efficiency of 53.4 % for methylene blue, followed by dip-dry and binder assisted integration. The superior performance of direct integration was attributed to uniform and dense growth of BiS nFs. The optimised method (direct growth) was employed for fabrication of a hybrid of BiS nFs with rGO-coated CF and yielded 79 % degradation, better than the pristine photocatalyst. This performance was attributed to highly dense growth of BiS nF and heterojunction formation between the BiS/rGO in hybrid photocatalyst. In electrochemical analysis, the hybrid photocatalyst showed −4 and 8 mA/cm² current densities at a scan rate of 5 mV/s, which elevated with increasing scan rate to 30 mV/s, demonstrating viable stability. It demonstrates the suitability of direct integration via the solvothermal approach for the fabrication of a hybrid photocatalyst with higher photo-electrochemical performance.

易于合成的低毒性可见光活性光催化剂是人们迫切需要的，但其效率受载流子复合的限制。因此，研究人员通过简单的溶剂热合成制备了具有异质结的光催化剂，用于电荷分离。在这方面，异质结形成成分的集成仍未被探索，可以调整以提高电化学性能。本研究分析了不同整合机制对合成可见光活性光催化剂降解染料的影响。首先，将溶剂热合成的硫化铋纳米花（BiS nF）集成在碳织物上。这些方法包括直接生长、粘合剂辅助和浸渍干燥（在BiS nF溶液中浸渍和干燥的循环）来优化集成。直接生长的光催化剂对亚甲基蓝的降解效率最高，达到53.4% %，其次是浸干和粘合剂辅助整合。其优异的直接集成性能主要归功于其均匀致密的生长。采用优化后的方法（直接生长）制备了BiS - nFs与rgo包覆CF的杂化产物，降解率为79% %，优于原始光催化剂。这种性能归因于BiS nF的高密度生长和BiS/rGO在杂化光催化剂中的异质结形成。在电化学分析中，在扫描速率为5 mV/s时，杂化光催化剂的电流密度分别为- 4和8 mA/cm2，随着扫描速率的增加，电流密度增加到30 mV/s，显示出可行的稳定性。证明了通过溶剂热直接集成方法制备具有较高光电化学性能的杂化光催化剂的适用性。

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引用次数: 0

AgNP-MWCNT nanocomposites for flexible strain sensors: Comprehensive insights into green synthesis, advanced fabrication technologies, and emerging applications 用于柔性应变传感器的AgNP-MWCNT纳米复合材料：全面了解绿色合成，先进制造技术和新兴应用

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Synthetic Metals

Pub Date : 2025-10-26 DOI: 10.1016/j.synthmet.2025.118003

Aamir Khan , Peerawat Prathumrat , Chutiwat Likitaporn , Tawan Wongsalam , Nattapon Tanalue , Nichakan Nichakornpong , Manunya Okhawilai

Strain sensors face persistent challenges in balancing sensitivity, stretchability, and durability, which limit their performance in applications, including body motion tracking, voice recognition, and health monitoring. To address these issues, recent efforts have turned to nanomaterial-based composites. Among them, silver nanoparticle-multi-walled carbon nanotube (AgNP-MWCNT) systems stand out for their excellent electrical conductivity, mechanical flexibility, and deformation sensitivity. This review presents a focused perspective on the green synthesis and fabrication of AgNP-MWCNT composites, emphasizing a reduction of toxic solvents and waste. Particular attention is given to the problem of CNT aggregation and the use of physical, chemical, and hybrid dispersion techniques to enhance uniformity and sensing performance. Fabrication approaches, including coating and printing methods, are critically assessed to identify pathways toward scalable and reliable sensor production. By integrating sustainable synthesis with advanced processing, AgNP-MWCNT composites hold strong potential for next-generation strain sensors in wearable electronics, human-machine interfaces, and structural health monitoring. The insights presented here aim to guide future work toward commercially viable sensor technologies that are both high-performing and environmentally responsible.

应变传感器在平衡灵敏度、拉伸性和耐用性方面面临着持续的挑战，这限制了它们在身体运动跟踪、语音识别和健康监测等应用中的性能。为了解决这些问题，最近的努力转向了基于纳米材料的复合材料。其中，银纳米颗粒-多壁碳纳米管（AgNP-MWCNT）体系以其优异的导电性、机械柔韧性和变形敏感性而脱颖而出。本文综述了AgNP-MWCNT复合材料的绿色合成和制备，强调了有毒溶剂和废物的减少。特别关注碳纳米管聚集和使用物理，化学和混合分散技术，以提高均匀性和传感性能的问题。制造方法，包括涂层和印刷方法，都经过严格评估，以确定可扩展和可靠的传感器生产途径。通过将可持续合成与先进加工相结合，AgNP-MWCNT复合材料在可穿戴电子产品、人机界面和结构健康监测领域的下一代应变传感器方面具有强大的潜力。本文提出的见解旨在指导未来商业上可行的传感器技术的工作，这些技术既高性能又对环境负责。

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引用次数: 0

Investigation of rheological, mechanical, and electrical properties of MWCNT/PDMS composites for extrusion-based direct ink writing MWCNT/PDMS复合材料的流变学、力学和电学性能研究

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Synthetic Metals

Pub Date : 2025-10-25 DOI: 10.1016/j.synthmet.2025.118004

Jashanpreet Singh Sidhu , Aviral Misra , Arvind Bhardwaj , D. Giribabu

Extrusion-based direct ink writing (EBDIW) has emerged as a versatile technique for fabricating complex, customizable, and flexible electronic architectures using viscoelastic functional inks. This study reports the formulation and characterization of multi-walled carbon nanotube (MWCNT)/polydimethylsiloxane (PDMS) inks with tunable rheological properties suitable for EBDIW. MWCNT/PDMS inks with 2–10 wt% MWCNT loadings were formulated, and rheological analysis identified 4 wt% as the threshold critical for printability. Printable inks within the 4–10 wt% range produced well-defined 3D structures, with optimal shape fidelity observed at 6–8 wt%. Below 4 wt%, excessive spreading occurred, while above 10 wt%, nozzle clogging was observed. Scanning electron microscopy (SEM) revealed the uniform incorporation of MWCNTs throughout the polymer matrix, facilitating the formation of conductive networks and enabling fine structure printing. The FT-IR and XRD analyses revealed strong interfacial interactions and improved structural alignment between MWCNTs and PDMS chains. Mechanical testing demonstrated an enhancement in Young’s modulus and tensile strength up to 4.89 MPa and 3.81 MPa at 8 wt% MWCNTs, respectively, followed by a decline due to filler agglomeration. Electrical conductivity of 3D-printed MWCNT/PDMS composites increased consistently with increasing MWCNT content, reaching 6.67 × 10⁻² S/m at 10 wt%. This work provides a mechanistic understanding of how filler concentration influences the rheological, mechanical, and electrical behavior of MWCNT/PDMS composites, enabling the 3D printing of complex, conductive structures for next-generation soft electronic applications.

基于挤压的直接墨水书写（EBDIW）已经成为一种使用粘弹性功能墨水制造复杂、可定制和灵活的电子结构的通用技术。本研究报道了适合于EBDIW的多壁碳纳米管(MWCNT)/聚二甲基硅氧烷（PDMS）墨水的制备和表征。MWCNT/PDMS油墨含有2-10 wt%的MWCNT，流变性分析确定4 wt%为可印刷性的临界阈值。4-10 wt%范围内的可打印油墨产生了明确的3D结构，最佳形状保真度为6-8 wt%。在4 wt%以下，会出现过度扩散，而在10 wt%以上，会出现喷嘴堵塞。扫描电子显微镜（SEM）显示，MWCNTs在整个聚合物基体中均匀结合，促进了导电网络的形成，并使精细结构打印成为可能。FT-IR和XRD分析表明，MWCNTs和PDMS链之间存在强的界面相互作用，并改善了结构对齐。力学测试表明，在8 wt%的MWCNTs下，杨氏模量和抗拉强度分别提高了4.89 MPa和3.81 MPa，随后由于填料团聚而下降。3d打印MWCNT/PDMS复合材料的电导率随着MWCNT含量的增加而增加，在10 wt%时达到6.67 × 10−2 S/m。这项工作提供了填充物浓度如何影响MWCNT/PDMS复合材料流变、机械和电学行为的机理理解，使下一代软电子应用的复杂导电结构的3D打印成为可能。

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引用次数: 0

Influence of kinetics and electrolyte on photocurrent generation in zeolitic imidazolate framework-67/FeWO₄ structures for electrochemical applications 动力学和电解质对沸石咪唑盐框架-67/FeWO₄电化学结构光电流产生的影响

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Synthetic Metals

Pub Date : 2025-10-24 DOI: 10.1016/j.synthmet.2025.118005

I. Neelakanta Reddy , Sarath Chandra Veerla , A. Bhargav , M. Dhanasekar , P.C. Nagajyothi , Jaesool Shim , Cheolho Bai

This study investigates the electrochemical performance of ZIF-67 (Z), FeWO₄ (F), and ZIF-67/FeWO₄ (ZF) composite electrodes in 0.1 M Na₂SO₄ and NaOH electrolytes under ON/OFF illumination. Nyquist and Tafel analyses reveal that the ZF composite exhibits the lowest charge transfer resistance (0.06 kΩ), the highest current density (∼8.20 mA·cm⁻²), and a reduced Tafel slope of 38.78 mV·dec⁻¹ in NaOH, indicating superior charge transfer kinetics and energy efficiency compared with Na₂SO₄ electrolyte. The enhanced performance in NaOH is attributed to higher ionic conductivity, faster OH⁻ transport, minimized recombination losses, and effective stabilization of reaction intermediates. Linear sweep voltammetry and pulsed illumination studies further demonstrate the synergistic interaction between ZIF-67 and FeWO₄, resulting in improved catalytic activity, photocurrent generation, and stability. Overall, the ZF composite electrode, particularly in NaOH, shows outstanding electrochemical performance, highlighting its potential for high-efficiency energy conversion and photoelectrochemical applications.

本研究考察了ZIF-67 (Z)、FeWO₄(F)和ZIF-67/FeWO₄（ZF）复合电极在0.1 M Na₂SO₄和NaOH电解质中的开/关光照下的电化学性能。Nyquist和Tafel分析表明，ZF复合物在NaOH中表现出最低的电荷转移电阻（0.06 kΩ），最高的电流密度（~ 8.20 mA·cm⁻²）和降低的Tafel斜率为38.78 mV·dec⁻¹ ，表明与Na₂SO₄电解质相比，ZF复合物具有更高的电荷转移动力学和能量效率。在NaOH中增强的性能归因于更高的离子电导率，更快的OH -运输，最小的重组损失和有效的稳定反应中间体。线性扫描伏安法和脉冲照明研究进一步证明了ZIF-67和硫酸铁之间的协同作用，从而提高了催化活性、光电流产生和稳定性。总的来说，ZF复合电极，特别是在NaOH中，表现出了出色的电化学性能，突出了其在高效能量转换和光电化学应用方面的潜力。

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引用次数: 0

Donor-acceptor-donor type derivatives of benzothiadiazole as multifunctional materials for optoelectronic devices 作为光电器件多功能材料的苯并噻唑供体-受体-供体型衍生物

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Synthetic Metals

Pub Date : 2025-10-22 DOI: 10.1016/j.synthmet.2025.118002

Svetlana Sargsyan, Ehsan Ullah Rashid, Rasa Keruckiene, Mariia Stanitska, Matas Guzauskas, Dmytro Volyniuk, Jurate Simokaitiene, Viktorija Andruleviciene, Juozas Vidas Grazulevicius

In the present research, two benzothiadiazole derivatives, incorporating carbazole and phenoxazine donor units are synthesized via a single-step nucleophilic substitution. The influence of donor strength and molecular conformation on their optoelectronic properties is systematically studied through experimental and computational methods. The toluene solutions of both the compounds exhibit absorption bands extending up to ca. 500 nm. Notably, the absorption profiles of the films are broadened, displaying pronounced low-energy tails that extend into the near-infrared region, reaching up to ca. 700 nm. The derivative of phenylcarbazolyl-disubstituted benzothiadiazole exhibits emission from hybridized local and charge-transfer excited state with photoluminescence quantum yield of the neat film reaching 30 %. Meanwhile, the phenoxazine-substituted benzothiadiazole derivative shows more twisted geometry and emission from merely charge transfer excited state with the considerably lower photoluminescence quantum yield of the solid film of 3 %. Both the compounds demonstrate efficient charge transport, particularly the derivative of phenoxazine. Its films exhibit the balanced bipolar charge transport with hole and electron mobilities reaching ca 10⁻⁴ cm²·V⁻¹ ·s⁻¹ at electric field of 9.6 × 10⁶ V/cm. Organic light emitting diode fabricated using the layer of the latter compound as a hole-transporting layer shows low turn-on voltage of 3.1 V and a maximum external quantum efficiency of 18.8 %. These findings highlight the potential of donor–acceptor engineering in developing of multifunctional materials with enhanced charge-transporting capabilities for optoelectronic applications.

本研究通过一步亲核取代法合成了两个以咔唑和苯恶嗪为供体的苯并噻唑衍生物。通过实验和计算方法系统地研究了施主强度和分子构象对其光电性能的影响。这两种化合物的甲苯溶液的吸收波段延伸至约500 nm。值得注意的是，薄膜的吸收谱线变宽，显示出明显的低能尾巴，延伸到近红外区域，达到约700 nm。苯基咔唑二取代苯并噻二唑衍生物表现出杂化局域和电荷转移激发态发射，整齐薄膜的光致发光量子产率达到30 %。同时，苯恶嗪取代的苯并噻二唑衍生物表现出更多的扭曲几何和仅从电荷转移激发态发射，固体膜的光致发光量子产率明显降低，为3 %。这两种化合物都表现出有效的电荷传输，特别是苯恶嗪的衍生物。在9.6 × 106 V/cm的电场下，空穴和电子迁移率达到10⁻⁴cm²·V⁻¹ ·s⁻¹ 。用后一种化合物层作为空穴传输层制备的有机发光二极管的导通电压低，为3.1 V，最大外量子效率为18.8 %。这些发现突出了供体-受体工程在开发光电应用中具有增强电荷传输能力的多功能材料方面的潜力。

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引用次数: 0

Surface-engineered taurine-doped polyaniline nanofibers with enhanced electrical and antioxidant properties for neural tissue engineering applications 具有增强电学和抗氧化性能的表面工程牛磺酸掺杂聚苯胺纳米纤维在神经组织工程中的应用

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Synthetic Metals

Pub Date : 2025-10-22 DOI: 10.1016/j.synthmet.2025.118001

Zohreh Daraeinejad , Banafsheh Dolatyar , Iman Shabani , Ehsan Seyedjafari

Conductive scaffolds with tailored surface properties are critical for neural tissue engineering. Here, we report surface-engineered polyaniline (PANI) nanofibers doped with taurine (Tau), a bioactive amino acid, to simultaneously enhance electrical conductivity (0.018 S/cm), antioxidant activity (41.3 % radical scavenging), and neural differentiation. Unlike conventional dopants (e.g., camphor sulfonic acid), Tau eliminates cytotoxicity while promoting stem cell proliferation and upregulating neural markers (Map2, Nurr1). Through electrospinning and in-situ polymerization, we fabricated two scaffold architectures: blended PANI-Tau/PES (BPPT) and PANI-Tau-coated PES (CPPT). CPPT exhibited superior surface hydrophilicity (contact angle: 72° vs. 127° for BPPT) and porosity (73 % vs. 59 % for BPPT). The results showed that using Tau as the dopant and the preparation method of nanofibers (blending or coating) changed the morphology, chemical properties, hydrophilicity/hydrophobicity, porosity, antioxidant activity, and conductivity of the scaffolds. Electrical stimulation (15 Hz, 100 mV) further amplified neural differentiation in Tau-doped scaffolds, demonstrating synergistic effects of surface chemistry and electroactivity. This work provides a strategy to engineer conductive biomaterials with multifunctional surfaces for neural regeneration.

具有定制表面特性的导电支架在神经组织工程中至关重要。在这里，我们报道了表面工程聚苯胺（PANI）纳米纤维掺杂牛磺酸（Tau），一种生物活性氨基酸，同时增强电导率（0.018 S/cm），抗氧化活性（41.3 %自由基清除）和神经分化。与传统的掺杂剂（如樟脑磺酸）不同，Tau消除细胞毒性，同时促进干细胞增殖和上调神经标记物（Map2, Nurr1）。通过静电纺丝和原位聚合，我们制备了两种支架结构：聚苯胺- tau /PES共混（BPPT）和聚苯胺- tau包覆PES （CPPT）。CPPT具有优越的表面亲水性（接触角72°，BPPT为127°）和孔隙率（73 %，BPPT为59 %）。结果表明，Tau作为掺杂剂和纳米纤维的制备方法（共混或包覆）改变了支架的形态、化学性质、亲疏水性、孔隙率、抗氧化活性和电导率。电刺激（15 Hz, 100 mV）进一步放大了tau掺杂支架的神经分化，显示了表面化学和电活性的协同效应。这项工作为设计具有多功能表面的导电生物材料用于神经再生提供了一种策略。

{"title":"Surface-engineered taurine-doped polyaniline nanofibers with enhanced electrical and antioxidant properties for neural tissue engineering applications","authors":"Zohreh Daraeinejad , Banafsheh Dolatyar , Iman Shabani , Ehsan Seyedjafari","doi":"10.1016/j.synthmet.2025.118001","DOIUrl":"10.1016/j.synthmet.2025.118001","url":null,"abstract":"<div><div>Conductive scaffolds with tailored surface properties are critical for neural tissue engineering. Here, we report surface-engineered polyaniline (PANI) nanofibers doped with taurine (Tau), a bioactive amino acid, to simultaneously enhance electrical conductivity (0.018 S/cm), antioxidant activity (41.3 % radical scavenging), and neural differentiation. Unlike conventional dopants (e.g., camphor sulfonic acid), Tau eliminates cytotoxicity while promoting stem cell proliferation and upregulating neural markers (Map2, Nurr1). Through electrospinning and in-situ polymerization, we fabricated two scaffold architectures: blended PANI-Tau/PES (BPPT) and PANI-Tau-coated PES (CPPT). CPPT exhibited superior surface hydrophilicity (contact angle: 72° vs. 127° for BPPT) and porosity (73 % vs. 59 % for BPPT). The results showed that using Tau as the dopant and the preparation method of nanofibers (blending or coating) changed the morphology, chemical properties, hydrophilicity/hydrophobicity, porosity, antioxidant activity, and conductivity of the scaffolds. Electrical stimulation (15 Hz, 100 mV) further amplified neural differentiation in Tau-doped scaffolds, demonstrating synergistic effects of surface chemistry and electroactivity. This work provides a strategy to engineer conductive biomaterials with multifunctional surfaces for neural regeneration.</div></div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"316 ","pages":"Article 118001"},"PeriodicalIF":4.6,"publicationDate":"2025-10-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145363955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-performance SrMg-MOF/PANI/rGO-based nanocomposite for advanced energy storage and oxygen reduction reaction 高性能SrMg-MOF/PANI/ rgo基纳米复合材料用于先进的储能和氧还原反应

IF 4.6 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Synthetic Metals

Pub Date : 2025-10-19 DOI: 10.1016/j.synthmet.2025.118000

Abdelfattah Amari , Muneerah Alomar , Amal Abdulrahman , Muhammad Hamza Waris , Zaina Algarni , Amir Muhammad Afzal , Sohail Mumtaz , M.A. Diab

The remarkable cyclic stability, high power densities, and other desirable properties of hybrid supercapacitor or supercapattery devices have brought them an abundance of interest in recent years. This research makes use of a hydrothermal synthesis process to create a strontium magnesium metal framework (SrMg-MOF). Adding different amounts of polyaniline (PANI) and reduced graphene oxide (rGO) to SrMg-MOF (SMM) improves its electrochemical performance. At first, a three-electrode setup with working, counter, and reference electrodes is used to assess the electrochemical characteristics of SrMg-MOF/PANI/rGO (SMMPr). The specific capacity (Qs) of SrMg-MOF/PANI (SMMP) and SMMPr are 935 C g⁻¹ and 1577 C g⁻¹ by CV, respectively. From the GCD, the obtained values of Qs of SMMP and SMMPr are 912 C g⁻¹ and 1566 C g⁻¹, respectively. Most notably, the supercapattery device exhibited an exceptional Qs of 231.74 C g⁻¹, remarkable energy density (Ed) of 74 Wh kg^−1, and power density (Pd) of 3252 W kg⁻¹. In addition, a capacity retention of 85.1 % was found in durability testing that included 5000 charge-discharge cycles. The results of this investigation indicate that a material composition of 80/20 % SMMPr has potential for use as an electrode in supercapattery applications. The SMMPr electrocatalyst demonstrated efficient oxygen reduction reaction (ORR) activity in 1 M KOH, with a maximal cathodic current at 0.44 V vs. RHE and an onset potential of 0.67 V. The Koutecky–Levich analysis revealed a 4.5-electron transfer pathway, which suggests a nearly complete 4-electron reduction process. The catalyst maintained approximately 78 % of its initial activity after 5000 s, which is a significant indication of its electrochemical durability.

近年来，混合超级电容器或超级电池器件具有显著的循环稳定性、高功率密度和其他理想的性能，引起了人们的极大兴趣。本研究利用水热合成工艺制备了锶镁金属骨架（SrMg-MOF）。在SMM中加入不同量的聚苯胺（PANI）和还原氧化石墨烯（rGO）可以改善SMM的电化学性能。首先，采用工作电极、计数电极和参比电极的三电极设置来评估SMMPr的电化学特性。SMMP和SMMPr的比容量Qs分别为935 C g−1和1577 C g−1 （CV）。从GCD中得到SMMP和SMMPr的q值分别为912 C g−1和1566 C g−1。最值得注意的是，该超级电池器件的Qs为231.74 C g−1，能量密度（Ed）为74 Wh kg−1，功率密度（Pd）为3252 W kg−1。此外，在包括5000次充放电循环的耐久性测试中，发现容量保持率为85.1% %。本研究结果表明，80/20 % SMMPr的材料具有作为超级电池电极的潜力。SMMPr电催化剂在1 M KOH条件下表现出高效的氧还原反应（ORR）活性，相对于RHE的最大阴极电流为0.44 V，起始电位为0.67 V。Koutecky-Levich分析揭示了一个4.5个电子的转移途径，这表明一个几乎完整的4个电子还原过程。在5000 秒后，催化剂保持了大约78 %的初始活性，这是其电化学耐久性的重要标志。

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引用次数: 0