Manganese (III) oxide-infused poly(thiophene-co-pyrrole) nanocomposites for optical, dielectric, and photocatalytic applications

IF 5.7 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2025-07-02 DOI:10.1016/j.materresbull.2025.113649

S. Sankar, M.T. Ramesan

{"title":"Manganese (III) oxide-infused poly(thiophene-co-pyrrole) nanocomposites for optical, dielectric, and photocatalytic applications","authors":"S. Sankar, M.T. Ramesan","doi":"10.1016/j.materresbull.2025.113649","DOIUrl":null,"url":null,"abstract":"<div><div>Copolymer nanocomposites consisting of poly(thiophene-co-pyrrole) (PTh-co-PPy) and manganese (III) oxide (Mn2O3) nanofillers were synthesized via in-situ polymerization. FTIR confirmed the interfacial interactions between Mn2O3 and the copolymer. UV–vis spectra revealed that the 5 wt % Mn2O3 nanocomposites exhibited the highest absorption and refractive index, along with the lowest optical bandgap, indicating effective integration. PL spectra showed fluorescence quenching and red shift, indicating strong interfacial interactions and optoelectronic potential. XRD confirmed crystalline growth of Mn2O3 in the copolymer, while FE-SEM and HR-TEM showed uniform dispersion of raspberry-like nanoparticles. DSC and TGA demonstrated an increased glass transition temperature and enhanced thermal stability. Electrical measurements revealed enhanced dielectric constant, electric modulus, and conductivity up to 5 wt % Mn2O3, followed by a decline at higher nanofiller concentrations. Photocatalytic activity with methylene blue confirmed maximum degradation efficiency for the 5 wt % nanocomposite. These findings highlight the promise of Mn2O3-reinforced PTh-co-PPy nanocomposites in optoelectronic and environmental applications.</div></div>","PeriodicalId":18265,"journal":{"name":"Materials Research Bulletin","volume":"193 ","pages":"Article 113649"},"PeriodicalIF":5.7000,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Research Bulletin","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0025540825003563","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Copolymer nanocomposites consisting of poly(thiophene-co-pyrrole) (PTh-co-PPy) and manganese (III) oxide (Mn₂O₃) nanofillers were synthesized via in-situ polymerization. FTIR confirmed the interfacial interactions between Mn₂O₃ and the copolymer. UV–vis spectra revealed that the 5 wt % Mn₂O₃ nanocomposites exhibited the highest absorption and refractive index, along with the lowest optical bandgap, indicating effective integration. PL spectra showed fluorescence quenching and red shift, indicating strong interfacial interactions and optoelectronic potential. XRD confirmed crystalline growth of Mn₂O₃ in the copolymer, while FE-SEM and HR-TEM showed uniform dispersion of raspberry-like nanoparticles. DSC and TGA demonstrated an increased glass transition temperature and enhanced thermal stability. Electrical measurements revealed enhanced dielectric constant, electric modulus, and conductivity up to 5 wt % Mn₂O₃, followed by a decline at higher nanofiller concentrations. Photocatalytic activity with methylene blue confirmed maximum degradation efficiency for the 5 wt % nanocomposite. These findings highlight the promise of Mn₂O₃-reinforced PTh-co-PPy nanocomposites in optoelectronic and environmental applications.

Abstract Image

查看原文本刊更多论文

锰（III）氧化物注入聚（噻吩-共吡咯）纳米复合材料的光学，电介质和光催化应用

采用原位聚合法制备了由聚噻吩-共吡咯（PTh-co-PPy）和氧化锰（Mn2O3）纳米填料组成的共聚物纳米复合材料。FTIR证实了Mn2O3与共聚物之间的界面相互作用。紫外可见光谱显示，5 wt % Mn2O3纳米复合材料具有最高的吸收和折射率，以及最低的光学带隙，表明有效的集成。PL光谱显示出荧光猝灭和红移，显示出强的界面相互作用和光电子电位。XRD证实了Mn2O3在共聚物中的结晶生长，而FE-SEM和HR-TEM显示了覆盆子状纳米颗粒的均匀分散。DSC和TGA表明玻璃化转变温度升高，热稳定性增强。电学测量显示，当Mn2O3浓度达到5 wt %时，介电常数、电模量和电导率都有所提高，但随着纳米填料浓度的增加，电导率下降。亚甲基蓝的光催化活性证实了5 wt %纳米复合材料的最大降解效率。这些发现突出了mn2o3增强PTh-co-PPy纳米复合材料在光电和环境应用方面的前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.