Bulk microphase segregation of an asymmetric organometallic-inorganic diblock copolymer: a remarkable example of concentric cylinders.
Bulk microphase segregation of an asymmetric organometallic-inorganic diblock copolymer: a remarkable example of concentric cylinders.
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不对称有机金属-无机二嵌段共聚物的整体微相分离：同心圆柱体的一个显着例子。
DOI：
10.1021/ja0300160
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发表时间：
2003
影响因子：
15
通讯作者：
M. Winnik
中科院分区：
文献类型：
--
作者：
J. Raez;Yuanming Zhang;Lan Cao;S. Petrov;K. Erlacher;U. Wiesner;I. Manners;M. Winnik
我们报道了一种不对称两嵌段共聚物poly(ferrocenyldimethylsilane-b-dimethylsiloxane)(PfS90-b-PDMS900，Pdi=1.01，体积分数PfS=0.2)在体态下自组装形成具有显著形貌的六方周期结构。部分主要成分形成了平均直径为35.5 nm的同心圆柱体的核心，周围环绕着一层7 nm厚的PFS外壳。剩余的PDMS填充组织间隙。用小角X射线散射法、扫描电子显微镜和常规电子显微镜对其形貌进行了表征。
We report that an asymmetric diblock copolymer, poly(ferrocenyldimethylsilane-b-dimethylsiloxane) (PFS90-b-PDMS900, PDI = 1.01, volume fraction PFS = 0.20), self-assembles in the bulk state to form a hexagonal periodic structure with a remarkable morphology. Part of the major component forms the core of concentric cylinders with a mean diameter of 35.5 nm surrounded by a 7 nm thick shell of PFS. The remaining PDMS fills the interstitial spaces. The morphology was elucidated by small-angle X-ray scattering, as well as by scanning and conventional transmission electron microscopy.