High-efficiency grafting of halloysite nanotubes by using p-conjugated polyfluorenes via ‘‘click’’ chemistry
writer：Hailei Zhang ? Xiaoyan Zhu? Yonggang Wu* ? Hongzan Song* ? Xinwu Ba
keywords：halloysite nanotubes,‘‘click’’ chemistry
source：期刊
specific source：J Mater Sci, 2015, 50:4387–4395
Issue time：2015年
New hybrid halloysite nanotubes (HNTs) were
obtained by grafting conjugated polyfluorenes (PFs) onto
the surface via ‘‘click’’ chemistry. The hybrid material can
be dispersed in organic solvent such as dichloromethane,
and exhibits intense blue emission peaked at 448 nm. The
absorption and emission spectra of the HNTs show distinct
bathochromic shifts compared to PFs, which can be attributed
to the extended p-conjugation as a result of the
cycloaddition of azide and alkyne groups. The changes of
the spectra also show that the PFs were grafted onto the
HNTs through chemical bonds. Thermal gravimetric
analyzer data show one more significant result, the grafting
degree of the HNTs is 150 %, which means that a high
mass ratio of PF polymers was grafted onto the HNTs.
Furthermore, characterizations by infrared, nuclear magnetic
resonance, and X-ray photoelectron spectroscopy also
support the conclusion. The combination of HNTs with
conjugated polymers will lead to a new generation of
donor–acceptor nanohybrid materials which are promising
in application in photoelectric fields.