Glassy state of single dendronized polymer chains

被引：51

作者：

Ecker, C

Severin, N

Shu, LJ

Schlüter, AD

Rabe, JP

机构：

[1] Humboldt Univ, Dept Phys, D-12489 Berlin, Germany

[2] Free Univ Berlin, Dept Chem, D-14195 Berlin, Germany

来源：

MACROMOLECULES | 2004年 / 37卷 / 07期

关键词：

D O I：

10.1021/ma035079h

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We investigated the mechanical properties of single chains of dendronized polystyrenes with dendrons of generation 1 to 4 spin coated on the basal plane of graphite. A scanning force microscope was used both to image the chain relaxation upon annealing and to manipulate single chains directly. The two approaches show that conformations for higher dendron generations chains are inherently trapped at room temperature. This behavior is attributed to a glassy state of single dendronized polymer chains. Upon annealing, the chains relax and orient quite perfectly along the axes of the substrate.

引用

收藏

页码：2484 / 2489

页数：6

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