Functionalization of multiwalled carbon nanotubes by pyrene-labeled hydroxypropyl cellulose.
Pyrene-labeled hydroxypropyl cellulose (HPC-Py) was synthesized through a condensation reaction between hydroxypropyl cellulose (HPC) and 1-pyrenebutyric acid (Py). A hybrid (HPC/MWNTs) of the HPC-Py and multiwalled carbon nanotubes (MWNTs) was prepared through a noncovalent method. Temperature-variable UV-vis spectra indicated that the HPC-Py had a lower critical solution temperature of about 44 degrees C in water. (1)H NMR, UV-vis, Raman, and fluorescence spectra were used to systematically investigate the pi-pi stacking interaction between the HPC-Py and MWNTs. Dispersion experiments showed the HPC/MWNTs hybrids could be well dispersed in water and many organic solvents.
Yang
Qiang
Q
Department of Biological Systems Engineering, University of Wisconsin-Madison, 460 Henry Mall, Madison, WI 53706, USA.
Shuai
Li
L
Zhou
Jinjin
J
Lu
Fachuang
F
Pan
Xuejun
X
D002482:Cellulose / Q000031:analogs & derivatives* / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D008855:Microscopy, Electron, Scanning; D037742:Nanotubes, Carbon / Q000737:chemistry*; D044367:Phase Transition; D011721:Pyrenes / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry; D013050:Spectrometry, Fluorescence; D013696:Temperature
D037742:Nanotubes, Carbon; D011721:Pyrenes; D012997:Solvents; D002482:Cellulose; C030984:pyrene; C008079:hydroxypropylcellulose