Microporous Organic Nanotube Networks from Hyper Cross-linking Core-shell Bottlebrush Copolymers for Selective Adsorption Study

We report a synthesis of microporous organic nanotube networks(MONNs) by a combination of hyper cross-linking and molecular templating of core-shell bottlebrush copolymers. The intrabrush and interbrush cross-linking of polystyrene(PS) shell layer in the core-shell bottlebrush copolymers led to the...

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Bibliographic Details
Published in:Chinese journal of polymer science 2018-01, Vol.36 (1), p.98-105
Main Authors: Wang, Tian-Qi, Xu, Yang, He, Zi-Dong, Zhou, Ming-Hong, Huang, Kun
Format: Article
Language:English
Subjects:
Adsorption
Characterization and Evaluation of Materials
Chemical synthesis
Chemistry
Chemistry and Materials Science
Condensed Matter Physics
Copolymers
Crosslinking
Industrial Chemistry/Chemical Engineering
Mesoscale phenomena
Nanotechnology
Nanotubes
Polymer Sciences
Polystyrene resins
Porosity
Selective adsorption
Shells
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Summary:We report a synthesis of microporous organic nanotube networks(MONNs) by a combination of hyper cross-linking and molecular templating of core-shell bottlebrush copolymers. The intrabrush and interbrush cross-linking of polystyrene(PS) shell layer in the core-shell bottlebrush copolymers led to the formation of micropores and large-sized nanopores(meso/macrospores) in MONNs, respectively, while selective removal of polylactide(PLA) core layer generated mesoporous tubular structure. The size of PLA-templated mesoporous cores and porous structure both at micro-and meso-scale could be controlled by simple tuning of the ratio of core/shell or the PLA core fraction in the bottlebrush precursors. Moreover, the resultant MONNs showed a highly selective adsorption capacity for the positively charged dyes on the basis of multi-porosity and carboxylate group-rich structure. In addition, MONNs also exhibited effective performance in size-selective adsorption of biomacromolecules. This work represents a new avenue for the preparation of MONNs and also provides a new application for molecular bottlebrushes in nanotechnology.
ISSN:0256-7679
1439-6203
DOI:10.1007/s10118-018-2007-0