Synthetic Metals最新文献_第3页

Electropolymerized pyridine derivatives and linear pyridinium salts for electrochromic applications 电致变色用电聚合吡啶衍生物和线性吡啶盐

IF 4.6 3区材料科学

Synthetic Metals Pub Date : 2025-09-13 DOI: 10.1016/j.synthmet.2025.117967

Radosław Banasz, Monika Wałęsa-Chorab

{"title":"Electropolymerized pyridine derivatives and linear pyridinium salts for electrochromic applications","authors":"Radosław Banasz, Monika Wałęsa-Chorab","doi":"10.1016/j.synthmet.2025.117967","DOIUrl":"10.1016/j.synthmet.2025.117967","url":null,"abstract":"<div><div>Two novel linear pyridine derivatives containing benzothiadiazole (BTZ) (<strong>A</strong>) and benzoselenadiazole (BSeZ) (<strong>B</strong>) cores functionalized by triphenylamine (TPA) group, and their corresponding pyridinium salts with hexyl chains <strong>1</strong> and <strong>2</strong>, were synthesized and characterized by spectroscopic, electrochemical, and spectroelectrochemical methods. The pyridine derivatives <strong>A</strong> and <strong>B</strong> were successfully electropolymerized onto the ITO electrode, obtaining as a result thin polymer films (<strong>poly-A</strong> and <strong>poly-B</strong>) with promising optical properties, including multicolor switching, good optical contrast and electrochromic stability. <strong>Poly-A</strong> and <strong>poly-B</strong> exhibited three reversible color changes (beige ↔ orange ↔ green-grey) and their electrochromic stability, response times and optical contrasts were defined. In contrast, the pyridinium salts exhibited a higher number of redox processes, showing multielectrochromic properties with up to five distinct and reversible color changes (yellow ↔ purple or slightly pink ↔ colorless ↔ orange ↔ grey), corresponding to occurring suitable redox forms. This study presents the example of pyridinium salts exhibiting multielectrochromism. Both polymeric pyridine derivatives and pyridinium salts indicate promising optical properties for using them as the active materials in electrochromic applications.</div></div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"315 ","pages":"Article 117967"},"PeriodicalIF":4.6,"publicationDate":"2025-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145097029","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

Ultrathin Ag electrodes with an interfacial anchoring growth layer for flexible organic light-emitting devices 具有界面锚定生长层的超薄银电极用于柔性有机发光器件

IF 4.6 3区材料科学

Synthetic Metals Pub Date : 2025-09-08 DOI: 10.1016/j.synthmet.2025.117955

Shihao Zhu , Yuehua Chen , Xuechun Wu , Jiahao Xu , Renhong Wang , Xinwen Zhang

{"title":"Ultrathin Ag electrodes with an interfacial anchoring growth layer for flexible organic light-emitting devices","authors":"Shihao Zhu , Yuehua Chen , Xuechun Wu , Jiahao Xu , Renhong Wang , Xinwen Zhang","doi":"10.1016/j.synthmet.2025.117955","DOIUrl":"10.1016/j.synthmet.2025.117955","url":null,"abstract":"<div><div>Ultrathin Ag electrodes with the low sheet resistance and high optical transmittance are the candidates for applications in flexible optoelectronic devices. However, the fabrication of ultrathin Ag electrodes with excellent optoelectrical properties and mechanical stability is challenging due to the fact that the ultrathin Ag layer obeys the Volmer-Weber growth mode when the Ag layer is too thin (<10 nm). In this paper, serine (Ser)-mediated anchoring the growth of ultrathin Ag films was proposed by the chemical bonding interactions between the group of -OH in Ser and Ag atoms. The composite transparent electrode of polyethylene terephthalate (PET)/Ser/Ag (7 nm)/MoO<sub>3</sub> (20 nm) possesses a low sheet resistance of ∼8.5 Ω/sq, a high optical transmittance of ∼87.2 % at 550 nm and the robust mechanical stability of 100,000 bending cycles at a bending radius of 5 mm. The excellent performance can be attributed to the formation of Ag-O bonds during the growth procedure of Ag films, resulting in the uniform growth of Ag films and outstanding adhesion to substrates. Flexible organic light-emitting devices were constructed based on the composite transparent electrodes, achieving a maximum luminance of ∼14070 cd/m<sup>2</sup> and a maximum current efficiency of ∼7.5 cd/A.</div></div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"315 ","pages":"Article 117955"},"PeriodicalIF":4.6,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145047116","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

Synergistic enhancement of conductivity in natural rubber – PEDOT:PSS composites using glycerol, polyethylene glycol, and CNTs 使用甘油、聚乙二醇和碳纳米管协同增强天然橡胶- PEDOT:PSS复合材料的导电性

IF 4.6 3区材料科学

Synthetic Metals Pub Date : 2025-09-08 DOI: 10.1016/j.synthmet.2025.117954

Chuleekorn Chotsuwan , Ramita Moontardee , Qingshuo Wei , Kanokporn Tangthana-umrung , Wassana Chiangthongkham

{"title":"Synergistic enhancement of conductivity in natural rubber – PEDOT:PSS composites using glycerol, polyethylene glycol, and CNTs","authors":"Chuleekorn Chotsuwan , Ramita Moontardee , Qingshuo Wei , Kanokporn Tangthana-umrung , Wassana Chiangthongkham","doi":"10.1016/j.synthmet.2025.117954","DOIUrl":"10.1016/j.synthmet.2025.117954","url":null,"abstract":"<div><div>This study presents the preparation and analysis of conductive composite films based on natural rubber (NR) and PEDOT:PSS. The percolation fitted model was applied to evaluate the electrical behavior of the composites, resulting in a percolation threshold at a PEDOT:PSS volume fraction of 0.67. SEM and IR analyses confirmed that continuous conductive networks were not formed below this threshold. To enhance conductivity in the sub-threshold regime, glycerol and polyethylene glycol (PEG) were added as non-conductive additives, resulting in up to two orders improvement in conductivity compared to the additive-free system. Further enhancement was achieved through the incorporation of glycerol and carbon nanotubes (CNTs), increasing conductivity to 1.01 × 10<sup>−2</sup> S/m at the volume fraction PEDOT:PSS of 0.2 below the percolation threshold. SEM and IR analyses indicated the improvement in dispersion and interfacial interaction. These findings highlight additive-assisted strategies as effective in lowering the percolation threshold and offer a scalable route for developing flexible, low-cost conductive polymer composites.</div></div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"315 ","pages":"Article 117954"},"PeriodicalIF":4.6,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145027309","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

Effects of different thiophene π-bridge units on electrochemical and electrochromic properties of di-nitrated D-π-A-π-D polymers 不同噻吩π桥单元对二硝化D-π-A-π-D聚合物电化学和电致变色性能的影响

IF 4.6 3区材料科学

Synthetic Metals Pub Date : 2025-09-07 DOI: 10.1016/j.synthmet.2025.117953

Zhuang Ren , Tong Tong , Daize Mo

{"title":"Effects of different thiophene π-bridge units on electrochemical and electrochromic properties of di-nitrated D-π-A-π-D polymers","authors":"Zhuang Ren , Tong Tong , Daize Mo","doi":"10.1016/j.synthmet.2025.117953","DOIUrl":"10.1016/j.synthmet.2025.117953","url":null,"abstract":"<div><div>In this paper, two di-nitrated D-π-A-π-D type monomers with di-nitrated benzothiadiazole as the acceptor unit, EDOT as the donor unit, and EDOT and 3-dodecylthiophene as the π-bridge units, respectively, were successfully synthesized by Stille coupling reactions, and their corresponding di-nitrated polymers (P(2EDOT-2NO<sub>2</sub>-BT) and P(EDOT-C<sub>12</sub>Th-2NO<sub>2</sub>-BT)) were obtained by electrochemical polymerization method. Through optical, cyclic voltammetry, spectroelectrochemistry and kinetic studies, the effects of π-bridge units on the optoelectronic properties, electrochemical and electrochromic properties of di-nitrated monomers and their corresponding D-A polymers were systematically discussed, and the structure-property relationship was further revealed. Compared to the monomer 2EDOT-2NO<sub>2</sub>-BT that using EDOT as the π-bridge unit, the absorption and fluorescence spectra of EDOT-C<sub>12</sub>Th-2NO<sub>2</sub>-BT that using 3-dodecylthiophene as the π-bridge unit are blue-shifted, with a larger Stokes shift (196 nm) and optical band gap (1.76 eV). Both of these di-nitrated monomers have very low fluorescence quantum yields and onset oxidation potentials (0.74–0.77 V), which make them ideal for electrodepositing high-quality electrochromic polymer films. Due to the loose and porous surface morphology, both these two di-nitrated polymers exhibit favorable redox activity and redox stability (the retained electroactivity of them were both over 80 % after 1000 cycle), as well as favorable electrochromic performance with obvious and reversible multicolor color change, good optical stability, decent optical contrast (33.24 %), short response time (as low as 1.5 s), good coloration efficiency (152.47 C<sup>−1</sup> cm<sup>2</sup>) and memory effect. Overall, both these two di-nitrated polymers have good redox stability and electrochromic properties, opens new possibilities for electrochromic devices based on the di-nitrated polymers.</div></div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"315 ","pages":"Article 117953"},"PeriodicalIF":4.6,"publicationDate":"2025-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145027308","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

Advanced MnNi-P/ZIF8@CNT electrocatalyst for CO2 reduction: Achieving high efficiency, stability, and low energy demand 先进的MnNi-P/ZIF8@CNT二氧化碳还原电催化剂：实现高效、稳定和低能源需求

IF 4.6 3区材料科学

Synthetic Metals Pub Date : 2025-09-04 DOI: 10.1016/j.synthmet.2025.117952

Bhishma Karki , Ali B.M. Ali , Narinderjit Singh Sawaran Singh , Maher Ali Rusho , Mohsin O. AL-Khafaji , Elangovan Muniyandy , Asilbek Abdullaev , Mutabar Latipova , Ruslanbek Siddikov , Aseel Smerat , Syed Waheedullah Ghori

{"title":"Advanced MnNi-P/ZIF8@CNT electrocatalyst for CO2 reduction: Achieving high efficiency, stability, and low energy demand","authors":"Bhishma Karki , Ali B.M. Ali , Narinderjit Singh Sawaran Singh , Maher Ali Rusho , Mohsin O. AL-Khafaji , Elangovan Muniyandy , Asilbek Abdullaev , Mutabar Latipova , Ruslanbek Siddikov , Aseel Smerat , Syed Waheedullah Ghori","doi":"10.1016/j.synthmet.2025.117952","DOIUrl":"10.1016/j.synthmet.2025.117952","url":null,"abstract":"<div><div>The electrochemical reduction of CO<sub>2</sub> into valuable products is a potential approach to reduce carbon emissions and meet energy concerns. Herein, we report the synthesis and use of MnNi-P/ZIF8@CNT, a composite electrocatalyst with high activity, selectivity, and stability for reducing CO<sub>2</sub> to CO. Structural and morphological characterizations using SEM, XRD, and Raman spectroscopy demonstrated that MnNi-P and ZIF8 are uniformly integrated on CNTs. Electrochemical techniques, including linear sweep voltammetry (LSV), electrochemical impedance spectroscopy (EIS), and chronoamperometry, confirmed its high catalytic activity. MnNi-P/ZIF8@CNT exhibited a low onset potential of −355 mV (<em>vs.</em> RHE) and an overpotential of −616 mV at −8 mA cm<sup>−2</sup> in a 0.5 M KHCO<sub>3</sub> solution saturated with CO<sub>2</sub>, outperforming ZIF8@CNT and MnNi-P@CNT. It achieved a high faradaic efficiency for CO (<em>FE</em><sub>CO</sub>) of over 93 % at −0.8 V (<em>vs.</em> RHE), surpassing many catalysts reported in the literature. Stability tests showed that MnNi-P/ZIF8@CNT maintained a stable current over 24 h without remarkable performance loss (<2 %), compared to 4.6 % and 8.4 % losses for ZIF8@CNT and MnNi-P@CNT, respectively. This work highlights the synergistic effects of MnNi-P and ZIF8, providing a robust platform for designing efficient, durable, and scalable catalysts for CO<sub>2</sub> electroreduction.</div></div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"315 ","pages":"Article 117952"},"PeriodicalIF":4.6,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145011105","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

Donor–acceptor type copolymers with a carbazole side chain as hole transport materials for dopant-free perovskite solar cells 含咔唑侧链的供-受体型共聚物作为无掺杂钙钛矿太阳能电池的空穴传输材料

IF 4.6 3区材料科学

Synthetic Metals Pub Date : 2025-09-01 DOI: 10.1016/j.synthmet.2025.117947

Ekaterina A. Komissarova , Sergei A. Kuklin , Andrey V. Maskaev , Alina F. Latypova , Azat F. Akbulatov , Nikita A. Slesarenko , Nikita A. Emelianov , Lyubov A. Frolova , Pavel A. Troshin

引用次数: 0

Microstructure engineering and conductivity optimization in silver films via Mixed Amine-MOD Ink 混合胺- mod油墨制备银膜的微结构工程及电导率优化

IF 4.6 3区材料科学

Synthetic Metals Pub Date : 2025-09-01 DOI: 10.1016/j.synthmet.2025.117951

Yue Dong , Yuxin Dong , Xuan Tang , Zhimei Xu , Xiang Ke , Xuchun Wang

{"title":"Microstructure engineering and conductivity optimization in silver films via Mixed Amine-MOD Ink","authors":"Yue Dong , Yuxin Dong , Xuan Tang , Zhimei Xu , Xiang Ke , Xuchun Wang","doi":"10.1016/j.synthmet.2025.117951","DOIUrl":"10.1016/j.synthmet.2025.117951","url":null,"abstract":"<div><div>This study focuses on microstructure engineering by tailoring the composition of mixed-amine-based MOD (metal-organic decomposition) silver inks. By systematically varying the molar ratio of ethylamine (EA) and 1,2-diaminopropane (PDA) as complexing agents, we demonstrate a controllable approach to tuning the film morphology. The thermal behavior of the inks and the resulting silver films were analyzed in detail, including microstructure, porosity, mean particle size distribution, grain size, and resistivity. The use of mixed amines was found to significantly enhance particle packing density and reduce structural voids, which are critical for achieving high conductivity. Notably, at an EA:PDA molar ratio of 7:3, the silver films exhibited the most compact microstructure with minimal porosity and the lowest resistivity of 6.3 µΩ·cm when cured at 150 °C for 10 min. Furthermore, the printed lines demonstrated excellent mechanical stability, maintaining conductivity after 500 bending cycles. This work highlights the vital role of microstructure control in developing high-performance conductive films for flexible electronics.</div></div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"315 ","pages":"Article 117951"},"PeriodicalIF":4.6,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997720","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

Synergistic effects in mixed-dimensional CoSm2O4@SnS2@CNTs nanocomposites for enhanced asymmetric supercapacitors efficiency and hydrogen evolution reaction 混合维CoSm2O4@SnS2@CNTs纳米复合材料对增强不对称超级电容器效率和析氢反应的协同效应

IF 4.6 3区材料科学

Synthetic Metals Pub Date : 2025-08-29 DOI: 10.1016/j.synthmet.2025.117950

Muhammad Imran , Muneerah Alomar , Afifa Saman , Mohammed Jalalah , Amir Muhammad Afzal , Sohail Mumtaz , Saba Khalil , Farid A. Harraz

{"title":"Synergistic effects in mixed-dimensional CoSm2O4@SnS2@CNTs nanocomposites for enhanced asymmetric supercapacitors efficiency and hydrogen evolution reaction","authors":"Muhammad Imran , Muneerah Alomar , Afifa Saman , Mohammed Jalalah , Amir Muhammad Afzal , Sohail Mumtaz , Saba Khalil , Farid A. Harraz","doi":"10.1016/j.synthmet.2025.117950","DOIUrl":"10.1016/j.synthmet.2025.117950","url":null,"abstract":"<div><div>In this study, using a hydrothermal synthesis technique, we prepared cobalt samarium oxide (CoSm<sub>2</sub>O<sub>4</sub>) and incorporated it with SnS<sub>2</sub> and CNTs. The composite electrode (CoSm<sub>2</sub>O<sub>4</sub>@SnS<sub>2</sub>@CNTs) demonstrated a specific capacity (Qs) of 949.71 C/g or 2110.21 F/g in a three-electrode system. In addition, we used CoSm<sub>2</sub>O<sub>4</sub>@SnS<sub>2</sub>@CNTs composite electrode with activated carbon (AC) to design an asymmetric supercapacitor device (CoSm<sub>2</sub>O<sub>4</sub>@SnS<sub>2</sub>@CNTs//AC). The asymmetric supercapacitor device exhibited a Qs of 156.19 C/g or 107.71 F/g, with an outstanding power density (P<sub>d</sub>) of 1987 W Kg<sup>−1</sup> and a remarkable energy density (E<sub>d</sub>) of 47 Wh Kg<sup>−1</sup>. After undergoing 5000 cycles, the electrode demonstrated a capacity retention of 91.9 % along with a coulombic efficiency of 87.7 %. Besides, the CoSm<sub>2</sub>O<sub>4</sub>@SnS<sub>2</sub>@CNT nanocomposite electrode revealed a remarkable value of Tafel slope of 35 mV/dec and demonstrates a significantly lower overpotential of 39 mV in the hydrogen evolution reaction. The use of these two-dimensional composite electrodes presents novel possibilities for the creation of energy devices with exceptional performance.</div></div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"315 ","pages":"Article 117950"},"PeriodicalIF":4.6,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144997721","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

An enzyme-free electrochemical glucose sensor: Directly electrosynthesized nickel nanoparticles/graphene oxide composite on a platinum microelectrode 无酶电化学葡萄糖传感器：在铂微电极上直接电合成镍纳米颗粒/氧化石墨烯复合材料

IF 4.6 3区材料科学

Synthetic Metals Pub Date : 2025-08-28 DOI: 10.1016/j.synthmet.2025.117949

Luyen Thi Tran , Hoang Vinh Tran , Linh Thi Hoai Nguyen , Cong Tu Nguyen , Cong Doanh Sai

{"title":"An enzyme-free electrochemical glucose sensor: Directly electrosynthesized nickel nanoparticles/graphene oxide composite on a platinum microelectrode","authors":"Luyen Thi Tran , Hoang Vinh Tran , Linh Thi Hoai Nguyen , Cong Tu Nguyen , Cong Doanh Sai","doi":"10.1016/j.synthmet.2025.117949","DOIUrl":"10.1016/j.synthmet.2025.117949","url":null,"abstract":"<div><div>Using a simple and efficient electrochemical method, nickel nanoparticles (NiNPs) were directly fabricated on graphene oxide (GO) layers to modify platinum microelectrodes (Pt/GO@NiNPs). With the fabricated Pt/GO@NiNPs microelectrodes, glucose was electro-oxidized directly in an alkaline environment without the presence of enzymes. The enzyme-free electrochemical glucose sensor based on Pt/GO@NiNPs microelectrode has exhibited many advantages such as a high sensitivity of 1091 μA mM<sup>−1</sup> cm<sup>−2</sup>, a good repeatability, a wide linear range from 0.05 mM to 20.00 mM and a low detection limit of 18 μM. In the presence of interferers such as ascorbic acid, lactose, urea and dopamine, the Pt/GO@NiNPs microelectrode has performed stably and has been less affected, showing a high selectivity. The developed Pt/GO@NiNPs electrochemical sensor has been used to detect glucose in a 5 % glucose intravenous infusion with an error of only 0.27 % compared to the value stated on the bottle label. The Pt/GO@NiNPs sensor has also been used to accurately quantify glucose content in a diabetic patient’s urine sample.</div></div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"314 ","pages":"Article 117949"},"PeriodicalIF":4.6,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144916663","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

Molecular conformational modulation via intramolecular non-covalent interactions enables a good balance of crystallinity and doping efficiency in DPP-based polymer thermoelectrics 通过分子内非共价相互作用进行分子构象调制，可以在dpp基聚合物热电材料中实现结晶度和掺杂效率的良好平衡

IF 4.6 3区材料科学

Synthetic Metals Pub Date : 2025-08-28 DOI: 10.1016/j.synthmet.2025.117948

Hui-Ping Li , Cai-Yan Gao , Xin-Heng Fan , Ying-Feng Li , Yu Chen , Lian-Ming Yang

{"title":"Molecular conformational modulation via intramolecular non-covalent interactions enables a good balance of crystallinity and doping efficiency in DPP-based polymer thermoelectrics","authors":"Hui-Ping Li , Cai-Yan Gao , Xin-Heng Fan , Ying-Feng Li , Yu Chen , Lian-Ming Yang","doi":"10.1016/j.synthmet.2025.117948","DOIUrl":"10.1016/j.synthmet.2025.117948","url":null,"abstract":"<div><div>The electrical conductivity (<em>σ</em>) of polymeric thermoelectric materials is severely constrained by the trade-off between optimizing crystallinity and achieving high doping efficiency. Conventional tactics for addressing this issue tend to adopt the side-chain engineering or backbone rigidification, which frequently compromise <em>σ</em>. Herein, we proposed a conformational modulation strategy to leverage the intramolecular non-covalent interactions for decoupling the crystallinity from the doping kinetics. A dual-acceptor copolymer, P(2ThDPP-BTZ), was designed and synthesized by integrating a benzothiadiazole (BTZ) acceptor unit into a thiophene-substituted diketopyrrolopyrrole (2ThDPP)-based backbone. Although the BTZ incorporation slightly deepened the HOMO energy level, it would induce the directional intramolecular S···N interactions with the adjacent 2ThDPP segments, resulting in a slightly curved S-shaped planar conformation. Compared with the rigid linear homopolymer P(2ThDPP), such a conformational modulation enhanced the dopant permeation and the diffusion kinetics with no significant compromise in the polymeric crystallinity for charge transport. Consequently, the FeCl<sub>3</sub>-doped P(2ThDPP-BTZ) achieved the superior doping kinetics and a higher doping level, thereby enhancing its thermoelectric performance. This work provides a new insight into molecular design strategies in advanced electronic materials through conformational modulation.</div></div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"314 ","pages":"Article 117948"},"PeriodicalIF":4.6,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144916664","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