Synthetic Metals最新文献_第5页

Nanostructured electrochemical platform for sensitive detection of melatonin in human serum and tablets 用于灵敏检测人血清和药片中褪黑素的纳米结构电化学平台

IF 4 3区材料科学

Synthetic Metals Pub Date : 2024-09-16 DOI: 10.1016/j.synthmet.2024.117750

Khadija Bahend , Nurgul K. Bakirhan , Mina El Fazdoune , Abdallah El-Asri , El Arbi Bazzaoui , Mohammed Bazzaoui

{"title":"Nanostructured electrochemical platform for sensitive detection of melatonin in human serum and tablets","authors":"Khadija Bahend , Nurgul K. Bakirhan , Mina El Fazdoune , Abdallah El-Asri , El Arbi Bazzaoui , Mohammed Bazzaoui","doi":"10.1016/j.synthmet.2024.117750","DOIUrl":"10.1016/j.synthmet.2024.117750","url":null,"abstract":"<div>Melatonin (MT) is a crucial hormone for biological rhythms that influences sleep-wake cycles. The therapeutic value of MT in neurological disorders highlights the need for precise detection. However, challenges like low concentrations in biological samples and complex matrix interferences persist, necessitating rapid and precise analytical techniques. This study presents the novelty of designing a novel sensor that combines a molecularly imprinted polymer with polytoluidine blue O (PTBO) and multi-walled carbon nanotubes on a glassy carbon electrode for MT detection and the study of the interaction between MT and the proposed sensor using density functional theory (DFT). DFT showed that MT has a high nucleophilic character and low electrophilicity compared to TBO, which is a strong electrophile. This supports electron transfer from MT to TBO/PTBO, as indicated by the electronic chemical potentials and molecular electrostatic potentials. Scanning electron microscopy was used to see the morphology. Electrochemical measurements using differential pulse voltammetry demonstrated enhanced sensitivity and selectivity. Under optimized conditions, the sensor exhibited a linear response ranging from 1 to 1000 µM with a limit of detection and limit of quantification of 0.027 µM and 0.092 µM respectively. The performance of the sensor was evaluated in pharmaceutical tablets and human serum. Validation experiments confirmed the reliability of the sensor, with recovery rates of 97.5 % for serum and 98.0 % for pharmaceutical tablets, alongside low relative standard deviations indicating good precision. Interference studies showed minimal effects from coexisting substances, highlighting the selectivity of the proposed sensor. Comparative analysis with existing sensors showed superior performance.</div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"309 ","pages":"Article 117750"},"PeriodicalIF":4.0,"publicationDate":"2024-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142241072","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}

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Thiophene appended schiff base probe for selective ‘turn-on’ response for copper (ii) ion and their applications in live cell imaging Thiophene appended schiff base probe for selective ‘turn-on’ response for copper (ii) ion and their applications in live cell imaging 用于铜（ii）离子选择性 "开启 "响应的噻吩添加的雪夫碱探针及其在活细胞成像中的应用用于铜（ii）离子选择性 "开启 "响应的噻吩添加的雪夫碱探针及其在活细胞成像中的应用

IF 4 3区材料科学

Synthetic Metals Pub Date : 2024-09-13 DOI: 10.1016/j.synthmet.2024.117752

Preethi Dhanapal, Manju S.L.

引用次数: 0

Influence of nitrogen exchange in the core-shell structure of naphthalenediimide molecules on the advancement of quantum electronic properties 萘二亚胺分子核壳结构中的氮交换对量子电子特性进步的影响

IF 4 3区材料科学

Synthetic Metals Pub Date : 2024-09-12 DOI: 10.1016/j.synthmet.2024.117748

Hamid Hadi , Ahmed Mahmoud Ahmed Mahmoud , Imen Cherif , Reza Safari , Bouzid Gassoumi , Balkis Abdelaziz , A Aathif Basha , Predhanekar Mohamed Imran , Muhammad Usman Khan , Hasan Zandi , Mounira Mahdouani , Sahbi Ayachi , Rafik Ben Chaabane , Mahmoud M. Hessien

{"title":"Influence of nitrogen exchange in the core-shell structure of naphthalenediimide molecules on the advancement of quantum electronic properties","authors":"Hamid Hadi , Ahmed Mahmoud Ahmed Mahmoud , Imen Cherif , Reza Safari , Bouzid Gassoumi , Balkis Abdelaziz , A Aathif Basha , Predhanekar Mohamed Imran , Muhammad Usman Khan , Hasan Zandi , Mounira Mahdouani , Sahbi Ayachi , Rafik Ben Chaabane , Mahmoud M. Hessien","doi":"10.1016/j.synthmet.2024.117748","DOIUrl":"10.1016/j.synthmet.2024.117748","url":null,"abstract":"<div>This study explores how nitrogen substitution and gold electrodes collectively influence the electronic characteristics of naphthalenediimide (NDI) molecules (M = 1, 2, and 3) through theoretical analysis. Utilizing ELF, LOL, QTAIM, and NCI analyses, we reveal significant alterations in NDI's electronic structure and interactions upon bonding with gold electrodes (Au-M-Au). Both ELF and LOL analyses demonstrate increased electron localization and delocalization on the NDI surface due to gold electrodes, with a stronger effect on nitrogen-doped molecules (M = 2, 3). QTAIM analysis confirms favorable non-covalent interactions, including evident hydrogen bonding, between NDI molecules and gold electrodes, notably intensified in doped molecules, especially the Au…O interaction. NCI analysis provides insight into the diverse interactions within the molecular system. Overall, this research highlights the crucial role of gold electrodes and nitrogen substitution in fine-tuning NDI molecules' electronic properties. The observed modulation of electron behavior and formation of beneficial interactions with gold electrodes hint at promising applications for doped NDI-gold systems requiring efficient charge transport mechanisms.</div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"309 ","pages":"Article 117748"},"PeriodicalIF":4.0,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142230184","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

Enhancing device characteristics of InP quantum dot LED through structural modification with polyethylene glycol blend 通过聚乙二醇混合物的结构改性提高 InP 量子点 LED 的器件特性

IF 4 3区材料科学

Synthetic Metals Pub Date : 2024-09-12 DOI: 10.1016/j.synthmet.2024.117747

Jaeseung Kim , Ji Ho Roh , Thi Na Le , Min Woo Hyeon , Bong Hoon Cha , Min Chul Suh , Hyunjung Kim

引用次数: 0

AC-driven QLED based on far-field effect of Au NPs 基于金氧化物远场效应的交流驱动 QLED

IF 4 3区材料科学

Synthetic Metals Pub Date : 2024-09-11 DOI: 10.1016/j.synthmet.2024.117749

Yanyue Yao, Zebang Zhao, Xiaojie Gong, Dandan Song, Bo Qiao, Zheng Xu, Suling Zhao

引用次数: 0

Thieno[3,2-b]thiophene flanked para-azaquinodimethane π-extended aromatic-quinoidal polymers 噻吩并[3,2-b]噻吩侧面对位氮杂喹啉二甲烷π-扩展芳香醌聚合物

IF 4 3区材料科学

Synthetic Metals Pub Date : 2024-09-10 DOI: 10.1016/j.synthmet.2024.117751

Bharath Dyaga , Witold Waliszewski , Zhitian Ling , Sasikumar Mayarambakam , Olivier Boyron , Wojciech Pisula , Bruno Schmaltz

{"title":"Thieno[3,2-b]thiophene flanked para-azaquinodimethane π-extended aromatic-quinoidal polymers","authors":"Bharath Dyaga , Witold Waliszewski , Zhitian Ling , Sasikumar Mayarambakam , Olivier Boyron , Wojciech Pisula , Bruno Schmaltz","doi":"10.1016/j.synthmet.2024.117751","DOIUrl":"10.1016/j.synthmet.2024.117751","url":null,"abstract":"<div>A series of thieno[3,2-b]thiophene (TT) flanked para-azaquinodimethane (p-AQM) based quinoidal conjugated polymers PAQM2TT-T, PAQM2TT-BT and PAQM3TT were designed in a strategy to extend the aromatic-quinoidal π-system. The three polymers were synthesized by Stille polycondensation, and their opto-electronic properties and device performance in field-effect transistors have been explored. From absorption spectroscopy, the polymers show low bandgaps (1.54–1.57 eV) and high HOMO energy levels. They exhibit typical p-type behavior according to the results of the characterization of the field-effect transistors with average charge carrier mobilities of 0.08 cm2 V−1 s−1 for PAQM2TT-T, 0.12 cm2 V−1 s−1 for PAQM2TT-BT and 0.05 cm2 V−1 s−1 for PAM3TT. This report presents an alternative π-extended quinoidal-donor strategy to control the molecular design and properties of new p-AQM-based conjugated polymers.</div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"309 ","pages":"Article 117751"},"PeriodicalIF":4.0,"publicationDate":"2024-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142271823","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

Preparation and infrared shielding of polyaniline@MWCNTs flexible electrochromic device based on cotton fabric 基于棉织物的聚苯胺@MWCNTs 柔性电致变色装置的制备与红外屏蔽

IF 4 3区材料科学

Synthetic Metals Pub Date : 2024-09-07 DOI: 10.1016/j.synthmet.2024.117744

Mengjie Li, Wei Jiang, Yun Lin, Changhui Li, Xue Liu, Qiongzhen Liu, Wenwen Wang, Liyan Yang, Yuedan Wang, Dong Wang

{"title":"Preparation and infrared shielding of polyaniline@MWCNTs flexible electrochromic device based on cotton fabric","authors":"Mengjie Li, Wei Jiang, Yun Lin, Changhui Li, Xue Liu, Qiongzhen Liu, Wenwen Wang, Liyan Yang, Yuedan Wang, Dong Wang","doi":"10.1016/j.synthmet.2024.117744","DOIUrl":"10.1016/j.synthmet.2024.117744","url":null,"abstract":"<div>Electrochromic fabric was formed by interfacial polymerization of polyaniline (PANI) and multi-walled carbon nanotubes (MWCNTs) on the surface of cotton cloth. The morphology and properties of the composite films were controlled by changing the content of multi-walled carbon nanotubes. The electrochromic properties of the fabric and its application in the field of near-infrared thermal shielding were studied. It is found that the electrochromic fabrics with MWCNTs have better electrochemical and color-changing properties. Electrochromic fabrics achieve color changes from light yellow to yellow-green to dark green in the voltage range of −1.0–1.2 V, and maintain a fast color switching time (2.15 s for coloring, 1.89 s for bleaching) after 600 cycles. The reflection contrast (ΔR) at 500 nm is 23.01 %. Moreover, the electrochromic devices are assembled with fabrics. The device has obvious discoloration and good bending stability. In addition, the thermal shielding is realized by using their reflection characteristics in the visual-near-infrared region. The results show that the electrochromic device has a low surface temperature at different environmental condition, and the thermal reduction from the original state to the bleached state is up to 3.8 ° C, indicating the potential application of the device in thermal regulation.</div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"309 ","pages":"Article 117744"},"PeriodicalIF":4.0,"publicationDate":"2024-09-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142164137","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

Oxidative calcination of brewery bagasse and in-situ preparation of activated carbon-PEDOT composite for hybrid supercapacitor application 氧化煅烧啤酒渣和原位制备用于混合超级电容器的活性炭-PEDOT 复合材料

IF 4 3区材料科学

Synthetic Metals Pub Date : 2024-09-06 DOI: 10.1016/j.synthmet.2024.117735

S.E. Kayode , C.E. Sánchez-Rodríguez , R. López-Sandoval , F.J. González

{"title":"Oxidative calcination of brewery bagasse and in-situ preparation of activated carbon-PEDOT composite for hybrid supercapacitor application","authors":"S.E. Kayode , C.E. Sánchez-Rodríguez , R. López-Sandoval , F.J. González","doi":"10.1016/j.synthmet.2024.117735","DOIUrl":"10.1016/j.synthmet.2024.117735","url":null,"abstract":"<div>In this study, we prepared an electrode material from biowaste residue for hybrid supercapacitor application. Bagasse from brewery residue was treated by oxidative calcination at 300 °C. The carbonized material was impregnated using different concentrations of potassium hydroxide (KOH), followed by thermal annealing at 850 °C to obtain activated carbon (AC). The AC obtained was used to prepare a composite with poly(3,4-ethylenedioxythiophene) (PEDOT) via in-situ polymerization process using iron (III) tosylate as oxidizing agent. Pure activated carbon attained a specific surface area (SSA) of 625 m2 g−1, and specific capacitance of 80.38 F g−1 at 5 mV s−1 while the AC-PEDOT composite presents 201 F g−1 at the same scan rate, given about 250 % improvement to the specific capacitance. Likewise, the AC presented an energy density of 10.88 Wh Kg−1 and a power density of 9411.59 W Kg−1 at 0.5 A g−1 while the AC-PEDOT composite showed energy density of 25.92 Wh Kg−1 and power density of 4836.44 W Kg−1 at 0.5 A g−1. The results confirm the properties of AC as a supercapacitive material and a battery-like behavior for the AC-PEDOT composite, demonstrating potential for hybrid supercapacitors application.</div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"309 ","pages":"Article 117735"},"PeriodicalIF":4.0,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142230183","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

Efficient electrooxidation of methanol by Co-Pt bimetallic nanoparticles loaded on carbon nanotubes in alkaline environment 碳纳米管上负载的 Co-Pt 双金属纳米粒子在碱性环境中对甲醇的高效电氧化作用

IF 4 3区材料科学

Synthetic Metals Pub Date : 2024-09-05 DOI: 10.1016/j.synthmet.2024.117736

Shuiyan Ning, Guiqi Gao, Ruiwen Yan

{"title":"Efficient electrooxidation of methanol by Co-Pt bimetallic nanoparticles loaded on carbon nanotubes in alkaline environment","authors":"Shuiyan Ning, Guiqi Gao, Ruiwen Yan","doi":"10.1016/j.synthmet.2024.117736","DOIUrl":"10.1016/j.synthmet.2024.117736","url":null,"abstract":"<div>In this work, composites of Co-Pt nanoparticles/carbon nanotubes (Co-Pt NPs/CNTs) were prepared by loading binary nanoparticles Co-Pt nanoparticles onto carbon nanotubes. These composites were utilized as highly efficient catalysts for the methanol electrocatalytic oxidation reaction (MOR). The morphology of the materials was analyzed using transmission electron microscopy (TEM), Spherical Aberration Corrected Scanning (AC-STEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The results revealed that the 5.54 nm diameter Co-Pt nanoparticles were evenly distributed on the surface of carbon nanotubes. Chronoamperometry (CA), linear scanning voltammetry (LSV), and cyclic voltammetry (CV) techniques were employed to assess the activity and stability of Co-Pt NPs/CNTs composites. Various Co-Pt NPs/CNTs composites were prepared by adjusting the ratio of Co-Pt. Through analysis of MOR performance, it was found that the Co3Pt1 NPs/CNTs composites exhibited superior catalytic activity with a mass activity of 4411 mA·mg−1Pt, which was 2.45 times higher than that of commercial Pt/C catalysts. This study introduced a novel approach for the preparation of high-performance Co-Pt bimetallic nanoparticles catalysts.</div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"309 ","pages":"Article 117736"},"PeriodicalIF":4.0,"publicationDate":"2024-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142150843","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

Optoelectronic processes in ultrasonic spray coated organic solar cells 超声波喷涂有机太阳能电池中的光电过程

IF 4 3区材料科学

Synthetic Metals Pub Date : 2024-08-30 DOI: 10.1016/j.synthmet.2024.117733

Gauri G. Bisen, Balaji V. Sanap, Milan S. Sonawane, Lekhamala D. Ingale, Anirudha M. Mangidkar, Jaydeep V. Sali, Sanjay S. Ghosh

{"title":"Optoelectronic processes in ultrasonic spray coated organic solar cells","authors":"Gauri G. Bisen, Balaji V. Sanap, Milan S. Sonawane, Lekhamala D. Ingale, Anirudha M. Mangidkar, Jaydeep V. Sali, Sanjay S. Ghosh","doi":"10.1016/j.synthmet.2024.117733","DOIUrl":"10.1016/j.synthmet.2024.117733","url":null,"abstract":"<div>In this work, the role of a high boiling point green solvent additive Diphenyl ether (DPE) in device recombination processes in organic solar cell, fabricated using ultrasonic spray coating method is investigated. Without DPE and with 2.4 % DPE, the device series resistance was high of the order of 104 Ω. With 0.3 %, 0.6 %, 1.2 % DPE, series resistance was less. Transient studies show that, for these contents, the rise and decay times of photocurrent was less than 5 µs. For 0.3 % DPE, nearly 3/4th photovoltage decayed with 51.4 µs lifetime and the remaining decays with 4.6 µs lifetime. With higher DPE content (1.2 %), 97 % photovoltage decay was with a longer lifetime 46.1 µs, and remaining with 1.6 µs. With further more DPE content (2.4 %), only 1 % TPV decays with shorter lifetime of 11.6 µs and 99 % decay is in longer time scale of 672 µs. In addition, a longer lifetime of over 1000 µs was also observed for this case, indicating the presence of deep traps, in addition to the shallow traps and bimolecular recombination. Morphology studies show that for 0 % and 0.3 % DPE content, stacked structure of droplets was formed in the film, but with 0.6 % and higher content, the progressively impinging droplets intermix with each other, providing more time for the film to dry. It was shown that the contribution of trap assisted recombination for varying DPE content was due to disordered PTB7 or PC71BM phases, indicating a competition between PTB7 aggregation and PC71BM dispersion in the coated film.</div>","PeriodicalId":22245,"journal":{"name":"Synthetic Metals","volume":"308 ","pages":"Article 117733"},"PeriodicalIF":4.0,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142095770","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