Hierarchical Self-Assembly of Double-Crystalline Poly(ferrocenyldimethylsilane)-block-poly(2-iso-propyl-2-oxazoline) (PFDMS-b-PiPrOx) Block Copolymers

被引:7
|
作者
Rudolph, Tobias [1 ,2 ]
Nunns, Adam [3 ]
Stumpf, Steffi [1 ,2 ]
Pietsch, Christian [1 ,2 ]
Schacher, Felix H. [1 ,2 ]
机构
[1] Univ Jena, Lab Organ & Macromol Chem, D-07743 Jena, Germany
[2] Univ Jena, Jena Ctr Soft Matter, D-07743 Jena, Germany
[3] Univ Bristol, Sch Chem, Bristol BS8 1TS, Avon, England
关键词
anionic ring-opening polymerization; double crystalline block copolymers; cationic ring-opening polymerization; organometallic block copolymers; self-assembly; DIBLOCK COPOLYMERS; CYLINDRICAL MICELLES; LINEAR POLYETHYLENE; CONTROLLED LENGTH; BEHAVIOR; OXIDE); CORE;
D O I
10.1002/marc.201500245
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 step-wise solution self-assembly of double crystalline organometallic poly(ferrocenyldimethylsilane)-block-poly(2-iso-propyl-2-oxazoline) (PFDMS-b-PiPrOx) diblock copolymers is demonstrated. Two block copolymers are obtained by copper-catalyzed azide-alkyne cycloaddition (CuAAC), featuring PFDMS/PiPrOx weight fractions of 46/54 (PFDMS30-b-PiPrOx(75)) and 30/70 (PFDMS30-b-PiPrOx(155)). Nonsolvent induced crystallization of PFDMS in acetone leads in both cases to cylindrical micelles with a PFDMS core. Afterward, the structures are transferred into water for sequential temperature-induced crystallization of the PiPrOx corona, leading to hierarchical double crystalline superstructures, which are investigated using scanning electron microscopy, wide angle X-ray scattering, and differential scanning calorimetry.
引用
收藏
页码:1651 / 1657
页数:7
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