Self-Assembly of Amphiphilic Conjugated Diblock Copolymers into One-Dimensional Nanoribbons

被引:58
作者
Kamps, Amanda C. [1 ]
Cativo, Ma Helen M. [1 ]
Fryd, Michael [1 ]
Park, So-Jung [1 ,2 ]
机构
[1] Univ Penn, Dept Chem, Philadelphia, PA 19104 USA
[2] Ewha Womans Univ, Global Top Program 5, Dept Chem & Nano Sci, Seoul 120750, South Korea
基金
美国国家科学基金会;
关键词
ACID) BLOCK-COPOLYMERS; ROD-COIL; AQUEOUS-SOLUTIONS; GRAFT-COPOLYMERS; FACILE SYNTHESIS; POLYMERS; METATHESIS; NANOFIBERS;
D O I
10.1021/ma4021483
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The colloidal self-assembly of a new conjugated diblock copolymer of a polythiophene derivative, poly[3-(2,5,8,11-tetraoxatridecanyl)thiophene]-block-poly(ethylene glycol) (PTOTT-b-PEG), led to various well-defined assembly structures such as vesicles, sheets, and nanoribbons. A unique and technologically relevant nanoribbon structure with a dimension reaching tens of micrometers was formed in water when polar protic solvents were used as initial cosolvents. Self-assembly of PTOTT-b-PEG in various solvent compositions and polymer concentrations indicated that the hydrogen bonding between the diblock copolymer and the self-assembly medium plays an important role in determining the self-assembly structure and that the final assembly structure should be the result of a delicate interplay between hydrogen bonding and pi-pi interactions. This study demonstrates that the addition of hydrogen bonding capability and amphiphilicity in the self-assembly of conjugated polymers can lead to many interesting well-defined assembly structures that are not typically found in conjugated polymers.
引用
收藏
页码:161 / 164
页数:4
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