Self-Assembly of Rod-Coil Polyethylenimine-Poly(ethylene glycol)-α-Cyclodextrin Inclusion Complexes into Hollow Spheres and Rod-Like Particles

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) an...

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Bibliographic Details
Published in:Macromolecular rapid communications. 2011-12, Vol.32 (24), p.1965-1971
Main Authors: Cheng, Cong, Han, Xiao-Juan, Dong, Zhen-Qiang, Liu, Yan, Li, Bang-Jing, Zhang, Sheng
Format: Article
Language:English
Subjects:
alpha-Cyclodextrins - chemistry
Gene Transfer Techniques
hollow spheres
inclusion complex
Nanoparticles - chemistry
Nanoparticles - ultrastructure
Polyethylene Glycols - chemistry
Polyethyleneimine - chemistry
rod-coil
self-assembly
tubular aggregates
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Summary: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. This paper describes the self‐assembly of rod–coil inclusion complexes, polyethylenimine–poly(ethyle glycol)–α‐cyclodextrin (PEI–PEG–α‐CD). 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 by self‐assembly in aqueous solution.
ISSN:1022-1336
1521-3927
DOI:10.1002/marc.201100514