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Room-temperature Magnetism in Carbon Dots and Enhanced Ferromagnetism in Carbon Dots-Polyaniline Nanocomposite

文献类型：期刊论文

作者Liu, Jian1,2; Bi, Hong1; Morais, Paulo Cesar1,3; Zhang, Xiang1; Zhang, Fapei4; Hu, Lin4
刊名SCIENTIFIC REPORTS
出版日期2017-05-19
卷号7
DOI10.1038/s41598-017-01350-x
文献子类Article
英文摘要Room temperature magnetic ordering is reported for very small carbon dots (CDs), mat-like polyaniline nanofibers (Mat-PANI) and a composite of CDs@Mat-PANI containing 0.315 wt% CDs. We have found saturation magnetization (MS) of CDs, Mat-PANI and CDs@Mat-PANI at 5 (20/300) K equals to 0.0079 (0.0048/0.0019), 0.0116 (0.0065/0.0055) and 0.0349 (0.0085/0.0077) emu/g, respectively. The MS enhancement in CDs@Mat-PANI (200% and 40% at 5 K and 300 K, respectively) is attributed to electron transfer from Mat-PANI imine N-atoms to the encapsulated CDs. Changes in MS values reveal that 0.81 (0.08) electron/CD is transferred at 5 (300) K, which is supported by observation of CDs photoluminescence (PL) redshift while in CDs@Mat-PANI. Band-bending and bandgap-renormalization calculations are used to predict a redshift of 117 meV at 300 K as a result of the electron transfer, in excellent agreement with the PL data (110 meV). Raman, X-ray diffraction and X-ray photoelectron spectroscopy data are used to confirm the electron transfer process as well as the strong interaction of CDs with PANI within CDs@Mat-PANI, which increases the crystalline domain size of Mat-PANI from about 4.8 nm to 9.2 nm while reducing the tensile strain from about 6.2% to 1.8%.
WOS关键词QUANTUM DOTS ; NANOTUBES ; GRAPHENE ; POLYMER ; METAL ; NANOSTRUCTURES ; SPINTRONICS ; GRAPHITE ; ORDER
WOS研究方向Science & Technology - Other Topics
语种英语
WOS记录号WOS:000401614900023
资助机构National Natural Science Foundations of China(51272002) ; National Natural Science Foundations of China(51272002) ; National Natural Science Foundations of China(51272002) ; National Natural Science Foundations of China(51272002) ; National Natural Science Foundations of China(51272002) ; National Natural Science Foundations of China(51272002) ; National Natural Science Foundations of China(51272002) ; National Natural Science Foundations of China(51272002) ; University Science Research Project of Anhui Province(KJ2016A577) ; University Science Research Project of Anhui Province(KJ2016A577) ; University Science Research Project of Anhui Province(KJ2016A577) ; University Science Research Project of Anhui Province(KJ2016A577) ; University Science Research Project of Anhui Province(KJ2016A577) ; University Science Research Project of Anhui Province(KJ2016A577) ; University Science Research Project of Anhui Province(KJ2016A577) ; University Science Research Project of Anhui Province(KJ2016A577) ; Imported Talent Team Project of Anhui Provincial Department of Education(2015[211]) ; Imported Talent Team Project of Anhui Provincial Department of Education(2015[211]) ; Imported Talent Team Project of Anhui Provincial Department of Education(2015[211]) ; Imported Talent Team Project of Anhui Provincial Department of Education(2015[211]) ; Imported Talent Team Project of Anhui Provincial Department of Education(2015[211]) ; Imported Talent Team Project of Anhui Provincial Department of Education(2015[211]) ; Imported Talent Team Project of Anhui Provincial Department of Education(2015[211]) ; Imported Talent Team Project of Anhui Provincial Department of Education(2015[211]) ; National Natural Science Foundations of China(51272002) ; National Natural Science Foundations of China(51272002) ; National Natural Science Foundations of China(51272002) ; National Natural Science Foundations of China(51272002) ; National Natural Science Foundations of China(51272002) ; National Natural Science Foundations of China(51272002) ; National Natural Science Foundations of China(51272002) ; National Natural Science Foundations of China(51272002) ; University Science Research Project of Anhui Province(KJ2016A577) ; University Science Research Project of Anhui Province(KJ2016A577) ; University Science Research Project of Anhui Province(KJ2016A577) ; University Science Research Project of Anhui Province(KJ2016A577) ; University Science Research Project of Anhui Province(KJ2016A577) ; University Science Research Project of Anhui Province(KJ2016A577) ; University Science Research Project of Anhui Province(KJ2016A577) ; University Science Research Project of Anhui Province(KJ2016A577) ; Imported Talent Team Project of Anhui Provincial Department of Education(2015[211]) ; Imported Talent Team Project of Anhui Provincial Department of Education(2015[211]) ; Imported Talent Team Project of Anhui Provincial Department of Education(2015[211]) ; Imported Talent Team Project of Anhui Provincial Department of Education(2015[211]) ; Imported Talent Team Project of Anhui Provincial Department of Education(2015[211]) ; Imported Talent Team Project of Anhui Provincial Department of Education(2015[211]) ; Imported Talent Team Project of Anhui Provincial Department of Education(2015[211]) ; Imported Talent Team Project of Anhui Provincial Department of Education(2015[211])
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/33418]  
专题合肥物质科学研究院_中科院强磁场科学中心
作者单位1.Anhui Univ, Coll Chem & Chem Engn, Hefei 230601, Peoples R China
2.Hefei Normal Univ, Dept Chem & Chem Engn, Hefei 230601, Peoples R China
3.Univ Brasilia, Inst Fis, BR-70910900 Brasilia, DF, Brazil
4.Chinese Acad Sci, High Magnet Field Lab, Hefei 230031, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Jian,Bi, Hong,Morais, Paulo Cesar,et al. Room-temperature Magnetism in Carbon Dots and Enhanced Ferromagnetism in Carbon Dots-Polyaniline Nanocomposite[J]. SCIENTIFIC REPORTS,2017,7.
APA Liu, Jian,Bi, Hong,Morais, Paulo Cesar,Zhang, Xiang,Zhang, Fapei,&Hu, Lin.(2017).Room-temperature Magnetism in Carbon Dots and Enhanced Ferromagnetism in Carbon Dots-Polyaniline Nanocomposite.SCIENTIFIC REPORTS,7.
MLA Liu, Jian,et al."Room-temperature Magnetism in Carbon Dots and Enhanced Ferromagnetism in Carbon Dots-Polyaniline Nanocomposite".SCIENTIFIC REPORTS 7(2017).

入库方式： OAI收割

来源：合肥物质科学研究院

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