水溶液中不同结构氨基酸对Ag_4^(2+)团簇的稳定能力研究（英文）

A Comparative Study of the Stabilizing Capacity of Aminoacids with Different Structures toward Ag_4^(2+) Cluster in Aqueous Solution

利用紫外光照射制得了Ａｇ４(2+)团簇，并分别研究了蛋氨酸、甘氨酸、谷氨酸、羟脯氨酸对Ａｇ４(2+)的稳定作用。发现Ａｇ４(2+)均能被这４种氨基酸稳定，而且蛋氨酸的稳定作用最强。Ａｇ４(2+)在高ｐＨ值比在低ｐＨ值更易生成。被蛋氨酸稳定的Ａｇ４２＋经过６０天也没有任何变化。同时还发现明胶也能够稳定Ａｇ４(2+)。

The stabilization of four aminoacids methionine, glycine, glutamate and hydroxyproline, towards the oligomeric Ag42+ produce by UV illumination in aqueous solution, was study by UV-visspectrum. It was find that the Ag42+ cluster can be stabilized by all the four aminoacids andmethionine has the highest stabilization effect. The Ag42+ cluster produce faster at higher pH thanthat at lower pH. The Ag42+ cluster stabilized by methionine can surive for more than to days without changing. The Ag42+ cluster can also be stabilized by the gelatin.