Premium
Synthesis of Novel Core Cross‐Linked Star‐Based Polyrotaxane End‐Capped via “CuAAC” Click Chemistry
Author(s) -
Fu Qiang,
Ren Jing M.,
Tan Shereen,
Xu Jiangtao,
Qiao Greg G.
Publication year - 2012
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.201200489
Subject(s) - click chemistry , core (optical fiber) , star polymer , star (game theory) , chemistry , polymer science , combinatorial chemistry , materials science , polymer chemistry , nanotechnology , polymer , copolymer , organic chemistry , physics , composite material , astrophysics
The first example of core cross‐linked star (CCS) polyrotaxane was prepared using the poly( ϵ ‐caprolactone) (PCL) CCS three‐dimensional (3D) scaffold. The 3D CCS polymer was firstly prepared through the “arm‐first” approach. Then, the “arms” of the resultant PCL CCS polymer were threaded with α ‐cyclodextrins ( α ‐CDs). The threaded α ‐CDs were permanently locked by the “click” reaction of terminal alkyne functionalities of the star polymers with the azide‐functionalized end caps to afford the CCS polyrotaxanes. All analytical results confirm the formation of the CCS polyrotaxanes and reveal their characteristics, including fluorescence under UV, a channel‐type crystalline structure, a two‐step thermal decomposition, and a unique core‐shell structure in great contrast to the polymer precursors.