Macroion–Solvent Interactions in Charged Droplets,The Journal of Physical Chemistry A

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Macroion–Solvent Interactions in Charged Droplets
The Journal of Physical Chemistry A ( IF 2.7 ) Pub Date : 2018-03-21 00:00:00 , DOI: 10.1021/acs.jpca.8b01404
Styliani Consta ₁ , Myong In Oh ₁ , Mahmoud Sharawy ₁ , Anatoly Malevanets ₂

Affiliation

Macroion–droplet interactions play a critical role in many settings such as ionization techniques of samples in mass spectrometry analysis and atmospheric aerosols. The droplets under investigation are composed of a polar solvent, primarily water, a charged macroion, and, possibly, buffer ions. We present highlights of our research on the relation between the charge state of a macroion and the droplet morphologies. We have determined that, depending on the charge on the macroion and certain macroscopic properties of the solvent, such as its dielectric constant and surface tension, a droplet may obtain striking conformations such as droplets with extruded tails, “pearl-necklace” conformations, and multipoint “star” shapes. The shapes of the droplet containing the macroion influence the charging mechanism of the macroion in a reciprocal manner. Understanding of the macroion–droplet interactions plays a central role in explaining the origin and the magnitude of the charge in spectra obtained in electrospray ionization mass spectrometry experiments and in controlling the stability of complexes of nucleic acids and proteins in droplets.

中文翻译：

带电液滴中的Macroion-溶剂相互作用

在许多设置中，例如在质谱分析中样品的电离技术和大气气溶胶中，Macroion与液滴之间的相互作用起着至关重要的作用。研究中的液滴由极性溶剂，主要是水，带电的大分子离子以及可能的缓冲离子组成。我们介绍了我们对宏离子的电荷状态与液滴形态之间关系的研究重点。我们已经确定，根据小分子上的电荷和溶剂的某些宏观特性（例如介电常数和表面张力），液滴可能会获得醒目的构型，例如带有挤压尾巴的液滴，“珍珠项链”构型，以及多点“星形”形状。包含大分子离子的液滴的形状以相反的方式影响大分子离子的带电机理。

更新日期：2018-03-21

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