Michal Bláha, Martin Jindra, Oleksandr Volochanskyi, Jan Plšek, Martin Mergl, Otakar Frank, Martin Kalbáč
{"title":"石墨烯/聚苯胺界面上的相互作用：石墨烯给聚苯胺的电子赋能和极化子的稳定","authors":"Michal Bláha, Martin Jindra, Oleksandr Volochanskyi, Jan Plšek, Martin Mergl, Otakar Frank, Martin Kalbáč","doi":"10.1007/s42114-025-01432-9","DOIUrl":null,"url":null,"abstract":"<div><p>This study aims to fill in the gaps in the experiment-based fundamental knowledge on the interaction of graphene and polyaniline at the “molecular” level, namely, charge redistribution and nature of charge carriers in polyaniline. We synthesized a two-dimensional graphene/polyaniline heterostructure and studied electronic structure and interactions of its components. The charge-transfer measurements showed that the formed polyaniline acts as a <i>p</i>-type dopant of graphene: the graphene electrons are accepted by polyaniline within the Fermi level alignment process. Raman and XPS spectroscopies and Raman spectroelectrochemistry on the (<sup>13</sup>C–)graphene/polyaniline interface reveal that the majority of polyaniline is in the polaron lattice form and a minority in the bipolaronic form. The XPS data show that the number of polyaniline charged nitrogen atoms exceeds the number of counter-anions, indicating that the proton doping of polyaniline as the main mechanism of polaron formation/stabilization is accompanied by a second mechanism, in which polarons and bipolarons are stabilized by graphene electrons in a mutual interaction. The work provides essential knowledge needed for a rational design of graphene/polyaniline nanocomposites and their exploitation in various devices.</p><h3>Graphical Abstract</h3>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":7220,"journal":{"name":"Advanced Composites and Hybrid Materials","volume":"8 5","pages":""},"PeriodicalIF":21.8000,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s42114-025-01432-9.pdf","citationCount":"0","resultStr":"{\"title\":\"Interactions at the graphene/polyaniline interface: electron donation from graphene to polyaniline and stabilization of polarons\",\"authors\":\"Michal Bláha, Martin Jindra, Oleksandr Volochanskyi, Jan Plšek, Martin Mergl, Otakar Frank, Martin Kalbáč\",\"doi\":\"10.1007/s42114-025-01432-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>This study aims to fill in the gaps in the experiment-based fundamental knowledge on the interaction of graphene and polyaniline at the “molecular” level, namely, charge redistribution and nature of charge carriers in polyaniline. We synthesized a two-dimensional graphene/polyaniline heterostructure and studied electronic structure and interactions of its components. The charge-transfer measurements showed that the formed polyaniline acts as a <i>p</i>-type dopant of graphene: the graphene electrons are accepted by polyaniline within the Fermi level alignment process. Raman and XPS spectroscopies and Raman spectroelectrochemistry on the (<sup>13</sup>C–)graphene/polyaniline interface reveal that the majority of polyaniline is in the polaron lattice form and a minority in the bipolaronic form. The XPS data show that the number of polyaniline charged nitrogen atoms exceeds the number of counter-anions, indicating that the proton doping of polyaniline as the main mechanism of polaron formation/stabilization is accompanied by a second mechanism, in which polarons and bipolarons are stabilized by graphene electrons in a mutual interaction. The work provides essential knowledge needed for a rational design of graphene/polyaniline nanocomposites and their exploitation in various devices.</p><h3>Graphical Abstract</h3>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":7220,\"journal\":{\"name\":\"Advanced Composites and Hybrid Materials\",\"volume\":\"8 5\",\"pages\":\"\"},\"PeriodicalIF\":21.8000,\"publicationDate\":\"2025-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://link.springer.com/content/pdf/10.1007/s42114-025-01432-9.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Composites and Hybrid Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s42114-025-01432-9\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATERIALS SCIENCE, COMPOSITES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Composites and Hybrid Materials","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s42114-025-01432-9","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATERIALS SCIENCE, COMPOSITES","Score":null,"Total":0}
Interactions at the graphene/polyaniline interface: electron donation from graphene to polyaniline and stabilization of polarons
This study aims to fill in the gaps in the experiment-based fundamental knowledge on the interaction of graphene and polyaniline at the “molecular” level, namely, charge redistribution and nature of charge carriers in polyaniline. We synthesized a two-dimensional graphene/polyaniline heterostructure and studied electronic structure and interactions of its components. The charge-transfer measurements showed that the formed polyaniline acts as a p-type dopant of graphene: the graphene electrons are accepted by polyaniline within the Fermi level alignment process. Raman and XPS spectroscopies and Raman spectroelectrochemistry on the (13C–)graphene/polyaniline interface reveal that the majority of polyaniline is in the polaron lattice form and a minority in the bipolaronic form. The XPS data show that the number of polyaniline charged nitrogen atoms exceeds the number of counter-anions, indicating that the proton doping of polyaniline as the main mechanism of polaron formation/stabilization is accompanied by a second mechanism, in which polarons and bipolarons are stabilized by graphene electrons in a mutual interaction. The work provides essential knowledge needed for a rational design of graphene/polyaniline nanocomposites and their exploitation in various devices.
期刊介绍：
Advanced Composites and Hybrid Materials is a leading international journal that promotes interdisciplinary collaboration among materials scientists, engineers, chemists, biologists, and physicists working on composites, including nanocomposites. Our aim is to facilitate rapid scientific communication in this field.
The journal publishes high-quality research on various aspects of composite materials, including materials design, surface and interface science/engineering, manufacturing, structure control, property design, device fabrication, and other applications. We also welcome simulation and modeling studies that are relevant to composites. Additionally, papers focusing on the relationship between fillers and the matrix are of particular interest.
Our scope includes polymer, metal, and ceramic matrices, with a special emphasis on reviews and meta-analyses related to materials selection. We cover a wide range of topics, including transport properties, strategies for controlling interfaces and composition distribution, bottom-up assembly of nanocomposites, highly porous and high-density composites, electronic structure design, materials synergisms, and thermoelectric materials.
Advanced Composites and Hybrid Materials follows a rigorous single-blind peer-review process to ensure the quality and integrity of the published work.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
