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Updated: Aug 22, 2026

Localization and Relative Quantification of Carbon Nanotubes in Cells with Multispectral Imaging Flow Cytometry
Published on: December 12, 2013
Viscosity sensitive near-infrared fluorescent probes based on functionalized single-walled carbon nanotubes
Fei Liu1, Ziwen Yuan, Xiao Sui
1Guangdong Institute of Microbiology, Guangdong Academy of Sciences, State Key Laboratory of Applied Microbiology Southern China, Guangdong Provincial Key Laboratory of Microbial Culture Collection and Application, Guangzhou 510070, China. xumy@gdim.cn.
Abstract:
A viscosity-sensitive fluorescent probe is demonstrated by grafting a rotatable 4-N,N'-dimethylaniline group on (6,5) single-walled carbon nanotubes. The rotation of the grafted group is constricted by solution viscosity, causing changes in the photoluminescence behaviors of the nanotubes. This enables a highly sensitive fluorescent probe for determining solution ratiometric viscosity in the biologically transparent second near-infrared region.
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