A Simple Entropic-Driving Separation Procedure of Low-Size Silver Clusters, Through Interaction with DNA,ChemistryOpen

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A Simple Entropic-Driving Separation Procedure of Low-Size Silver Clusters, Through Interaction with DNA
ChemistryOpen ( IF 2.5 ) Pub Date : 2021-08-05 , DOI: 10.1002/open.202100028
David Buceta ₁ , Blanca Dominguez ₁ , Sara Vieitez ₁ , Iria R Arias ₁ , J Manuel Ageitos ₂ , M Carmen Blanco ₁ , Giampaolo Barone ₃ , Fernando Domínguez ₄ , M Arturo López-Quintela ₁

Affiliation

Synthesis and purification of metal clusters without strong binding agents by wet chemical methods are very attractive for their potential applications in many research areas. However, especially challenging is the separation of uncharged clusters with only a few number of atoms, which renders the usual techniques very difficult to apply. Herein, we report the first efficient separation of Ag₂ and Ag₃ clusters using the different entropic driving forces when such clusters interact with DNA, into which Ag₃ selectively intercalates. After sequential dialysis of the samples and denaturalizing the DNA-Ag₃ complex, pure Ag₂ can be found in the dialysate after extensive dialysis. Free Ag₃ is recovered after DNA denaturation.

中文翻译：

通过与 DNA 相互作用实现小尺寸银簇的简单熵驱动分离程序

通过湿化学方法合成和纯化无需强结合剂的金属簇因其在许多研究领域的潜在应用而非常有吸引力。然而，特别具有挑战性的是仅具有少量原子的不带电簇的分离，这使得通常的技术很难应用。在此，我们报告了当 Ag ₂和 Ag ₃簇与 DNA 相互作用时，使用不同的熵驱动力首次有效分离 Ag 2 和 Ag 3 簇，Ag ₃选择性地插入其中。对样品进行连续透析并使DNA-Ag ₃复合物变性后，经过广泛透析后，可以在透析液中发现纯Ag _{2 。}DNA 变性后回收游离Ag _{3 。}

更新日期：2021-08-05

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