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钙黄绿素对Yb(Ⅲ)近红外发光的敏化作用研究

邓朝霞;梁卓文;孟建新

  Sensitized near-infrared fluorescence from Yb(Ⅲ)-Calcein complex in methanol solution was studied.It was found that Calcein form 2∶1 complex with Yb(Ⅲ)in a pH 8.9 buffer solution.The visible fluorescence from Calcein was quenched when complex forms,while the near-infrared fluorescence from Yb(Ⅲ) was greatly sensitized.Near-infrared fluorescence of Yb(Ⅲ)was further enhanced when second ligand,such as tributyl phosphate(TBP),1,10-Phenanthroline(phen)and trioctyl phosphine oxide(TOPO),was added.It was also noted that the near-infrared fluorescence from Yb(Ⅲ)could also be enhanced by addition of small amount of Er~(3+) ions.……   
[关键词]:钙黄绿素;近红外发光;Yb3+
[文献类型]:期刊
[文献出处]: 《化学研究与应用2004年01期
[格式]:PDF原版; EPUB自适应版(需下载客户端)