期刊
EUROPEAN POLYMER JOURNAL
卷 153, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.eurpolymj.2021.110496
关键词
Self-assembly; OPV; P2VP; Fiber-like micelle; Nanotube
资金
- National Key R&D Program of China [2016YFA0202900]
- National Science Foundation for Distinguished Young Scholars [51825304]
- National Natural Science Foundation of China [51873229, 21632009, 51961145103]
- Strategic Priority Research Program of CAS [XDB20000000]
- project of Bureau of International Cooperation, CAS [121731KYSB20200006]
- Youth Innovation Promotion Association of CAS [2016233]
- Shanghai Scientific and Technological Innovation Project [18JC1410600, 18JC1415500, 18JC1410802, 18ZR1410200, 18ZR1448600, 19ZR1468400, 19590750400, 19DZ1205300, 20JC1415400]
- Innovation Program of Shanghai Municipal Education Commission [2019-01-07-00-05-E00012]
This study reports the synthesis of inorganic nanotubes with unique structures using a living crystallization-driven self-assembly method, achieving precise control over the length of the nanotubes. These inorganic nanotubes exhibit higher catalytic activity in reactions, possibly due to their porous structure.
Y Inorganic nanotubes with unique and well-defined porous structures show promising applications in diverse functional materials. However, it remains a challenge to fabricate inorganic nanotubes with precise length controllability. Herein, we report the synthesis of block copolymers consisting of a crystalline pi-conjugated oligo (p-phenylenevinylene) (OPV) block, a hydrophilic poly(2-vinylpyridine) (P2VP) segment and a photo-cleavable o-nitrobenzyl (ONB) junction. By taking advantage of crystallinity of OPV segment, self-seeding approach of living crystallization-driven self-assembly was employed to generate uniform fiber-like micelles composed of an OPV core and a P2VP corona. The P2VP corona was then used to host the formation of silica, titania and Pt(0)embedded silica shell. After the photo-cleavable OBN junctions were broken under light irradiation, the OPV core can be removed in a good solvent for OPV segments to give silica, titania and Pt(0)-embedded silica nanotubes. Significantly, the Pt(0)-embedded silica nanotubes exhibited much higher catalytic activity toward the reductiond of p-nitroaniline than Pt(0)-embedded silica nanofibers with the same Pt content, probably owing to the presence of porous channel for nanotubes. This work opens a new avenue to fabricate inorganic nanotubes of controlled length.
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