Nanoscale ionic materials based on hydroxyl-functionalized graphene
文献类型：期刊论文
| 作者 | Wu, Liusuo1,2; Zhang, Baoqing1; Lu, Hao1,2; Liu, Chen-Yang1 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2014 |
| 卷号 | 2期号:5页码:1409-1417 |
| ISSN号 | 2050-7488 |
| DOI | 10.1039/c3ta14424k |
| 英文摘要 | Nanoscale ionic materials (NIMs) are novel organic-inorganic hybrid materials consisting of inorganic nanocore covalently attached with charged corona that is electrostatically coupled to oppositely charged canopy. In this study, graphene-based NIMs were prepared from hydroxyl-functionalized graphene (G-OH) that acquired via nitrene chemistry. The obtained G-OH-based NIM exhibited fluidity at its equivalence point (pH 6.3) at room temperature; in contrast, the graphene oxide (GO)-based NIM appeared as a black solid at its equivalence point because of the relatively low -OH density on GO. X-ray photoelectron spectroscopy and thermogravimetric analyses revealed grafting densities for G-OH and GO-based NIMs of ca. one polymer chain per 21 and 94 graphene carbon atoms, respectively. Microstructure analyses indicated the even dispersion of graphene nanosheets in NIMs. Rheological properties of G-OH-based NIMs could be adjusted over a wide range through variation of the volume fractions of canopy (Jeffamine M-2070 polyetheramine). G-OH-based NIMs also showed different viscoelastic behaviours from that of a G-OH-canopy physical mixture with similar graphene content. Thermal analyses showed that the crystallization temperature of canopy in G-OH-based NIMs decreased compared to that in physical mixtures. Cold crystallization was apparent during the heating cycle for G-OH-based NIMs, which did not exist for the physical mixtures. Furthermore, G-OH-based NIMs showed even dispersion and months-long stability in water and many organic solvents, indicating its amphiphilic nature. The unique properties of graphene-NIMs hold great potential for applications employing graphene-based materials. |
| 语种 | 英语 |
| WOS记录号 | WOS:000328955200032 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/51261]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhang, Baoqing |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, CAS Key Lab Engn Plast, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, Liusuo,Zhang, Baoqing,Lu, Hao,et al. Nanoscale ionic materials based on hydroxyl-functionalized graphene[J]. JOURNAL OF MATERIALS CHEMISTRY A,2014,2(5):1409-1417. |
| APA | Wu, Liusuo,Zhang, Baoqing,Lu, Hao,&Liu, Chen-Yang.(2014).Nanoscale ionic materials based on hydroxyl-functionalized graphene.JOURNAL OF MATERIALS CHEMISTRY A,2(5),1409-1417. |
| MLA | Wu, Liusuo,et al."Nanoscale ionic materials based on hydroxyl-functionalized graphene".JOURNAL OF MATERIALS CHEMISTRY A 2.5(2014):1409-1417. |
入库方式： OAI收割
来源：化学研究所
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