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纯水相SEC法分离水溶性小金纳米簇的研究

Keywords: 水溶性金纳米簇,尺寸排阻色谱,分离

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Abstract:

以纯水为流动相,用PLaquagelˉOH40色谱柱与自动馏分收集器,在Agilent1100高效液相色谱仪上,对巯基丁二酸(MSA)单层包裹的粒径约1ˉ5nm的水溶性小金纳米簇进行尺寸排阻色谱(SEC)分离,环境友好,操作简便,重现性好.TEM表征和粒径统计分析表明在不同洗脱时间收集的金纳米簇馏分与相应的原始样品相比其粒径分布均得到改善,尺寸分布明显窄化.金纳米簇在所用色谱柱上的分离主要按尺寸排阻机制进行.

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