Premium
Janus Composite Nanotubes
Author(s) -
Chen Ying,
Liu Zhen,
Qu Xiaozhong,
Liang Fuxin,
Yang Zhenzhong
Publication year - 2016
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201600435
Subject(s) - nanotube , janus , materials science , paramagnetism , composite number , calcination , wetting , nanotechnology , sonication , carbon nanotube , chemical engineering , composite material , chemistry , organic chemistry , catalysis , physics , quantum mechanics , engineering
We propose a facile method to achieve paramagnetic Janus nanotubes with two compositions compartmentalized onto the interior and exterior surfaces, respectively. A sulfonated polydivinylbenzene (PDVB) nanotube is prepared by simple sulfonation of the exterior surface of a PDVB nanotube. Silica@FeOOH dual layers are sequentially grown onto the sulfonated PDVB nanotube surface. The composite nanotubes become paramagnetic after calcination and can be broken into shorter pieces under vigorous ultrasonication. After selective modification of the interior and exterior surfaces of the paramagnetic nanotubes, the nanotube shell becomes Janus in wettability. Desired hydrophobic species can be selectively captured inside the cavity. The paramagnetic Janus composite nanotubes can align into parallel chains under a magnetic field, which is self‐disassembled upon removal of the magnetic field.