|The impacts of surface polarity on the solubility of nanoparticle|
|Zhu, JZ; Ou XW(欧新文); Li JY(李敬源); Ou, XW; Su, JG; Li, JY
|发表期刊||JOURNAL OF CHEMICAL PHYSICS
|摘要||In order to study the dependence of water solubility and hydration behavior of nanoparticles on their surface polarity, we designed polar nanoparticles with varying surface polarity by assigning atomic partial charge to the surface of C60. The water solubility of the nanoparticle is enhanced by several orders of magnitude after the introduction of surface polarity. Nevertheless, when the atomic partial charge grows beyond a certain value (q(M)), the solubility continuously decreases to the level of nonpolar nanoparticle. It should be noted that such q(M) is comparable with atomic partial charge of a variety of functional groups. The hydration behaviors of nanoparticles were then studied to investigate the non-monotonic dependence of solubility on the surface polarity. The interaction between the polar nanoparticle and the hydration water is stronger than the nonpolar counterpart, which should facilitate the dissolution of the nanoparticles. On the other hand, the surface polarity also reduces the interaction of hydration water with the other water molecules and enhances the interaction between the nanoparticles which may hinder their dispersion. Besides, the introduction of surface polarity disturbs and even rearranges the hydration structure of nonpolar nanoparticle. Interestingly, the polar nanoparticle with less ordered hydration structure tends to have higher water solubility. Published by AIP Publishing.|
; HYDROPHOBIC HYDRATION
; Physics, Atomic, Molecular & Chemical
Zhu, JZ,Ou XW,Li JY,et al. The impacts of surface polarity on the solubility of nanoparticle[J]. JOURNAL OF CHEMICAL PHYSICS,2016,145(4).
Zhu, JZ,欧新文,李敬源,Ou, XW,Su, JG,&Li, JY.(2016).The impacts of surface polarity on the solubility of nanoparticle.JOURNAL OF CHEMICAL PHYSICS,145(4).
Zhu, JZ,et al."The impacts of surface polarity on the solubility of nanoparticle".JOURNAL OF CHEMICAL PHYSICS 145.4(2016).