环糊精
增溶
超分子化学
碳纳米管
表面改性
化学
化学工程
材料科学
高分子化学
组合化学
纳米技术
有机化学
物理化学
分子
生物化学
工程类
作者
Sheng‐Zhen Zu,Xu‐Xia Sun,Yuanqin Liu,Bao‐Hang Han
标识
DOI:10.1002/asia.200900119
摘要
A novel approach to solubilize single-walled carbon nanotubes (SWCNTs) in the aqueous phase is described by employing supramolecular surface modification. We use cyclodextrin complexes of synthetic molecules that contain a planar pyrene moiety or a bent, shape-fitted triptycene moiety as a binding group connected through a spacer to an adamantane moiety that is accommodated in the cyclodextrin cavity. The binding groups attach to the sidewalls of SWCNTs through a pi-pi stacking interaction to yield a supramolecular system that allows the SWCNTs to dissolve in the aqueous phase through the formed hydrophilic cyclodextrin shell. The black aqueous SWCNT solutions obtained are stable over a period of months. They are characterized through absorbance, static, and time-resolved fluorescence spectroscopy as well as Raman spectroscopy, TEM, and fluorescence-decay measurements. Furthermore, the shape-fitted triptycene-based system shows a pronounced selectivity for SWCNTs with a diameter of 1.0 nm.
科研通智能强力驱动
Strongly Powered by AbleSci AI