首页
最新动态 交流合作 科研项目 论文著作 精彩瞬间 招生招聘
  • Dicyanovinyl-functionalized fluorescent hyperbranched conjugated polymer nanoparticles for sensitive naked-eye cyanide ion detection
  • 来源:童辉研究员个人网站 2015-06-18
  • A selective and sensitive fluorescent nanoprobe based on hyperbranched conjugated polymer nanoparticles (HBCPN-DCV) for cyanide detection was developed. HBCPN-DCV was readily prepared by Suzuki coupling polymerization in a mini-emulsion, followed by post-functionalization of numerous terminal aldehyde groups into cyanide-responsive dicyanovinyl fluorophores on the particle surface. An efficient F?rster resonance energy transfer from the HBCPN core to the peripheral dicyanovinyl dyes was achieved in HBCPN-DCV. Taking advantage of the amplified energy transfer, the fluorescent turn-off cyanide detection mode of its model compound (M-DCV) could be transformed into the turn-on and ratiometric detection mode of HBCPN-DCV, with a limit of detection down to 0.2 μM. Meanwhile, clear fluorescent colour change at a cyanide concentration as low as 2 μM could be observed by the naked eye. In addition, compared to M-DCV, HBCPN-DCV exhibits higher sensitivity and wider linear region.

  • [来源:中国聚合物网]
  • 了解更多请进入: 童辉研究员个人网站
相关新闻
  • · Intramolecular charge-transfer emission from conjugated polymer nanoparticles: the terminal group effect on electronic and optical properties

关于我们  |  联系我们  

网站:中国聚合物网

polymer.cn Copyright ©2017