Colorimetric sensing of dopamine using hexagonal silver nanoparticles decorated by task-specific pyridinum based ionic liquid
作者: Simindokht RostamiAli MehdiniaAli JabbariElaheh KowsariRamin NiroumandTimothy J. Booth
作者单位: 1Department of Chemistry, Faculty of Science, K. N. Toosi University of Technology, Tehran, Iran
2Department of Marine Living Science, Ocean Sciences Research Center, Iranian National Institute for Oceanography and Atmospheric Science, Tehran, Iran
3Department of Chemistry, Amirkabir University of Technology, Tehran, Iran
4Department of Micro- and Nanotechnology, Centre for Nanostructured Graphene (CNG), Technical University of Denmark, 2800 Kongens Lyngby, Denmark
刊名: Sensors & Actuators: B. Chemical, 2018, Vol.271 , pp.64-72
来源数据库: Elsevier Journal
DOI: 10.1016/j.snb.2018.05.116
关键词: Morphology transitionEtching strategyColorimetric detectionLocalized surface plasmon resonanceDopamine
原始语种摘要: Abstract(#br)A simple and sensitive platform was introduced for detection of dopamine (DA) based on morphology transition and etching strategy of hexagonal platelet shaped silver nanoparticles (Ag NPs) functionalized with task-specific ionic liquid (TSIL). In this study, a pyridinium based TSIL was used for surface functionalization. According to the etching strategy, hexagonal TSIL-Ag NPs were converted to round-shape nanoparticles in the presence of DA. This etching process caused a blue shift in the localized surface plasmon resonance (LSPR) peak of TSIL-Ag NPs. The maximum absorption band shifted from 585 nm to 500 nm. Color change from green to red was also observed as a consequence of morphology transition of TSIL-Ag NPs. The color change and change in the A 500 /A 585 ratio versus...
全文获取路径: Elsevier  (合作)
影响因子:3.535 (2012)

  • hexagonal 六角形的
  • silver 
  • decorated 具饰纹的
  • ionic 离子的
  • sensing 感觉
  • transition 转移
  • morphology 形态学
  • plasmon 细胞质基因
  • dopamine 多巴胺
  • change 变化