硒化镉量子点与血红蛋白之间的相互作用研究
Study on the interaction between CdSe quantum dots and hemoglobin.
作者信息
Hu De-Hong, Wu Hong-Min, Liang Jian-Gong, Han He-You
机构信息
College of Science, State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, PR China.
出版信息
Spectrochim Acta A Mol Biomol Spectrosc. 2008 Mar;69(3):830-4. doi: 10.1016/j.saa.2007.05.036. Epub 2007 May 23.
The interaction between CdSe quantum dots (QDs) and hemoglobin (Hb) was investigated by ultraviolet and visible (UV-vis) absorption spectroscopy, Fourier transform infrared (FTIR) spectroscopy, and fluorescence (FL) spectroscopy. The intensity of UV-vis absorption spectrum of a mixture of CdSe QDs and Hb was obviously changed at the wavelength of 406nm at pH 7.0, indicating that CdSe QDs could bind with Hb. The influences of some factors on the interactions between CdSe QDs and Hb were studied in detail. The binding molar ratio of CdSe QDs and Hb was 12:1 by a mole-ratio method. The mechanism of the interaction between CdSe QDs and Hb was also discussed.
通过紫外可见（UV-vis）吸收光谱、傅里叶变换红外（FTIR）光谱和荧光（FL）光谱研究了CdSe量子点（QDs）与血红蛋白（Hb）之间的相互作用。在pH 7.0时，CdSe量子点与Hb混合物的紫外可见吸收光谱在406nm波长处的强度明显变化，表明CdSe量子点可以与Hb结合。详细研究了一些因素对CdSe量子点与Hb相互作用的影响。通过摩尔比法测得CdSe量子点与Hb的结合摩尔比为12:1。还讨论了CdSe量子点与Hb相互作用的机制。
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