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Self‐Assembly of Rod–Coil Polyethylenimine–Poly(ethylene glycol)–α‐Cyclodextrin Inclusion Complexes into Hollow Spheres and Rod‐Like Particles
Author(s) -
Cheng Cong,
Han XiaoJuan,
Dong ZhenQiang,
Liu Yan,
Li BangJing,
Zhang Sheng
Publication year - 2011
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.201100514
Subject(s) - polyethylenimine , ethylene glycol , cyclodextrin , peg ratio , copolymer , materials science , aqueous solution , self assembly , polymer chemistry , chemical engineering , chemistry , nanotechnology , polymer , composite material , organic chemistry , gene , transfection , biochemistry , finance , engineering , economics
This paper describes the self‐assembly of rod–coil inclusion complexes, polyethylenimine–poly(ethylene glycol)–α‐cyclodextrin (PEI–PEG–α‐CD). It is demonstrated that α‐CDs should exclusively thread on the PEG block in PEI–PEG copolymers and the resulting complexes have both rigid block (PEG–α‐CD) and coil block (protonated PEI). By varying the rigid block fraction, aggregates with hollow spheres or rod‐like particles could be formed simply by self‐assembly in aqueous solution.