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| Composite system based on chitosan and room-temperature ionic liquid: Direct electrochemistry and electrocatalysis of hemoglobin | |
| Lu, XB; Hu, JQ; Yao, X; Wang, ZP; Li, JH | |
| 2006 | |
| Source Publication | BIOMACROMOLECULES
 |
| ISSN | 1525-7797 |
| Volume | 7Issue:3Pages:975-980 |
| Abstract | A novel polymer/room-temperature ionic liquid (RTIL) composite material based on chitosan (Chi) and 1-butyl-3-methyl-imidazolium tetrafluoroborate (BMIMBF4) was explored. The composite system can be readily used as an immobilization matrix to entrap proteins and enzymes. Hemoglobin (Hb) was chosen as a model protein to investigate the composite system. A pair of well-defined quasireversible redox peaks of hemoglobin were obtained at the Chi-BMIMBF4-Hb composite-film-modified glassy carbon (GC) electrode by direct electron transfer between the protein and the GC electrode. Dramatically enhanced biocatalytic activity was exemplified at the Chi-BMIMBF4-Rb/GC electrode by the reduction of oxygen and trichloroacetic acid. Thermogravimetric analysis (TGA) suggests that the Chi-BMIMBF4-Hb composite has higher thermal stability than Chi-Hb itself. The Chi-BMIMBF4-Hb film was also characterized by UV-visible spectra, indicating excellent stability in solution and good biocompatibility for protein. The unique composite material based on polymer and ionic liquid can find wide potential applications in direct electrochemistry, biosensors, and biocatalysis. |
| Keyword | Glassy-carbon Electrode Horseradish-peroxidase Heme-proteins Gold Nanoparticles Films Biosensor Immobilization Stability Polymer Bioelectrochemistry |
| Subject Area | Biochemistry & Molecular Biology ; Chemistry ; Polymer Science |
| Indexed By | SCI |
| Document Type | 期刊论文 |
| Identifier | https://ir.xtbg.ac.cn/handle/353005/9766 |
| Collection | 文献共享 |
| Recommended Citation GB/T 7714 | Lu, XB,Hu, JQ,Yao, X,et al. Composite system based on chitosan and room-temperature ionic liquid: Direct electrochemistry and electrocatalysis of hemoglobin[J]. BIOMACROMOLECULES,2006,7(3):975-980. |
| APA | Lu, XB,Hu, JQ,Yao, X,Wang, ZP,&Li, JH.(2006).Composite system based on chitosan and room-temperature ionic liquid: Direct electrochemistry and electrocatalysis of hemoglobin.BIOMACROMOLECULES,7(3),975-980. |
| MLA | Lu, XB,et al."Composite system based on chitosan and room-temperature ionic liquid: Direct electrochemistry and electrocatalysis of hemoglobin".BIOMACROMOLECULES 7.3(2006):975-980. |
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| File Name/Size | DocType | Version | Access | License | ||
| Composite System Bas（105KB） | 开放获取 | CC BY-NC-SA | View Download | |||
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