Controlled shell on nanoparticles as a tool to regulate the properties of immobilized molecules

被引：15

作者：

Gu, Junwei ^{[1
]}

Wang, Lei ^{[1
]}

Liang, Chaobo ^{[1
]}

Zhuang, Qiang ^{[1
]}

Kong, Jie ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Dept Appl Chem, Sch Sci, Xian 710072, Shaanxi, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2018年 / 745卷

基金：

中国国家自然科学基金;

关键词：

Core shell nanoparticle; pKa regulation; Surface functionality; CHARGED NANOPARTICLES; SURFACE MODIFICATION; BIOMEDICAL APPLICATIONS; MAGNETIC-PROPERTIES; DRUG-DELIVERY; AU; GAMMA-FE2O3; WATER; SIZE;

D O I：

10.1016/j.jallcom.2018.02.206

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Tuning functions of organic molecules is a remaining challenge in versatile applications. Here, we demonstrated the pKa of 11- mercaptoundecanoic acid can be subtly tuned by the gold shell thickness of Fe2O3@Au core-shell nanoparticles. Based on titration results, the rebalance of the electrostatic and vdW interactions on nanoparticles was proposed as a mechanism for regulating the pKa of 11-mercaptoundecanoic acid on nanoparticles. Further, the simulation by DLVO theory validated our mechanism, and thus offering a potential route to tune the functions of organic molecules. (C) 2018 Elsevier B.V. All rights reserved.

引用

页码：430 / 435

页数：6

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