Dendron-Polymer Hybrids as Tailorable Coronae of Single-Walled Carbon Nanotube

20 April 2021, Version 1
This content is a preprint and has not undergone peer review at the time of posting.


Single-walled carbon nanotubes (SWCNTs), non-covalently functionalized by synthetic polymers, find widespread applications including sensing and imaging. Identifying new amphiphiles with interchangeable building blocks that can form unique coronae around the SWCNT, customized for a specific application, is thus of great interest. We present polymer-dendron hybrids, composed of hydrophobic dendrons and hydrophilic polyethylene glycol (PEG), as amphiphilic macromolecules with high degree of structural freedom, for suspending SWCNTs in aqeous solution. Based on a set of four PEG-dendrons differing in their dendritic end-groups, we show thst differences in the chemical structure of the hydrophobic end-groups control the interactions of the PEG-dendrons with the SWCNT-surface. These interactions led to differences in the intrinsic near-infrared fluorescence emission of the SWCNTs and affected the PEG-dendron susceptibility to enzymatic degradation, which was monitored by the SWCNT fluorescent signal. Our findings open new avenues for rational design of SWCNT functionalization, and optical sensing of enzymatic activity


Single Walled Carbon Nanotubes
Optical Nanosensors
Fluorescent Nanoparticles
Dendritic Amphiphiles
Enzyme Responsive Materials

Supplementary materials

Supporting Information


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