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    • 5. 发明授权
    • Nanopatterned templates from oriented degradable diblock copolymer thin films
    • 来自定向可降解二嵌段共聚物薄膜的纳米图案模板
    • US07632544B2
    • 2009-12-15
    • US10850169
    • 2004-05-18
    • Rong-Ming HoHui-Wen FanWen-Hsien TsengYeo-Wan ChiangChu-Chien LinBao-Tsan KoBor-Hunn HuangHsi-Hsin ShihJoung-Yei Chen
    • Rong-Ming HoHui-Wen FanWen-Hsien TsengYeo-Wan ChiangChu-Chien LinBao-Tsan KoBor-Hunn HuangHsi-Hsin ShihJoung-Yei Chen
    • B05D3/00B05D5/00
    • C08F8/50B82Y30/00C08J5/005Y10T428/24802Y10T428/31786C08F297/00
    • A nanopatterned template for use in manufacturing nanoscale objects. The nanopatterned template contains a nanoporous thin film with a periodically ordered porous geomorphology which is made from a process comprising the steps of: (a) using a block copolymerization process to prepare a block copolymer comprising first and second polymer blocks, the first and second polymer blocks being incompatible with each other; (b) forming a thin film under conditions such that the first polymer blocks form into a periodically ordered topology; and (c) selectively degrading the first polymer blocks to cause the thin film to become a nanoporous material with a periodically ordered porous geomorphology. In a preferred embodiment, the block copolymer is poly(styrene)-poly(L-lactide) (PS-PLLA) chiral block copolymer, the first polymer is poly(L-lactide), and the second polymer is polystyrene. Experimental results show that the first polymer blocks can be formed into a hexagonal cylindrical geomorphology with its axis perpendicular to a surface of the thin film. After hydrolysis to selectively degrade the first polymer blocks, a thin film having a series of repeated nanoscale hexagonal-cylindrical channels is obtained.
    • 用于制造纳米尺度物体的纳米图案模板。 纳米图案模板包含具有周期性排序的多孔地貌的纳米多孔薄膜,其由包括以下步骤的方法制备:(a)使用嵌段共聚方法制备包含第一和第二聚合物嵌段的嵌段共聚物,第一和第二聚合物 块相互不兼容; (b)在使第一聚合物嵌段形成周期排序的拓扑的条件下形成薄膜; 和(c)选择性降解第一聚合物嵌段以使薄膜成为具有定期多孔的地貌的纳米多孔材料。 在优选的实施方案中,嵌段共聚物是聚(苯乙烯) - 聚(L-丙交酯)(PS-PLLA)手性嵌段共聚物,第一聚合物是聚(L-丙交酯),第二聚合物是聚苯乙烯。 实验结果表明,第一聚合物嵌段可以形成六边形圆柱形地貌,其轴线垂直于薄膜表面。 在水解以选择性降解第一聚合物嵌段之后,获得具有一系列重复的纳米级六边形柱形通道的薄膜。
    • 7. 发明授权
    • Nanoscale helical microstructures and channels from chiral poly(L-lactide) block containing block copolymers
    • 来自手性聚(L-丙交酯)嵌段的嵌段共聚物的纳米级螺旋微结构和通道
    • US07135523B2
    • 2006-11-14
    • US10799845
    • 2004-03-12
    • Rong-Ming HoYeo-Wan ChiangChu-Chieh LinBao-Tsan KoYi-Chun ChenTsai-Ming ChungHsi-Hsin ShihJassy S. J. Wang
    • Rong-Ming HoYeo-Wan ChiangChu-Chieh LinBao-Tsan KoYi-Chun ChenTsai-Ming ChungHsi-Hsin ShihJassy S. J. Wang
    • C08G63/08
    • C08L53/00C08F293/005G03F7/0002
    • A method for making a series of nanoscale microstructures, including helical microstructures and cylindrical microstrustures. This method includes the steps of: (1) forming a chiral block copolymer containing a plurality of chiral first polymer blocks and a second polymer blocks wherein the chiral first polymer blocks have a volume fraction ranging from 20 to 49%; (2) causing a phase separation in the chiral block copolymer. In a preferred embodiment, the chiral block copolymer is poly(styrene)-poly(L-lactide) (PS-PLLA) chiral block copolymer, and the copolymerization process is a living copolymerization process which includes the following steps: (a) mixing styrene with BPO and 4-OH-TEMPO to form 4-hydroxy-TEMPO-terminated polystyrene; and (2) mixing the 4-hydroxy-TEMPO-terminated polystyrene with [η3-EDBP)Li2]2[(η3-nBu)Li(0.5Et2O)]2 and L-lactide in an organic solvent preferably CH2Cl2 to form the poly(styrene)-poly(L-lactide) chiral block copolymer. Transmission electron microscopy (TEM) and small X-ray scattering (SAXS) studies show that when the volume fraction of poly(L-lactide) is about 35–37%, nanoscale helices with a pitch of 43.8 nanometers and a diameter of 34.4 nanometers were observed.
    • 一种制备一系列纳米级微观结构的方法,包括螺旋微结构和圆柱形微结构。 该方法包括以下步骤:(1)形成含有多个手性第一聚合物嵌段的手性嵌段共聚物和第二聚合物嵌段,其中手性第一聚合物嵌段具有20至49%的体积分数; (2)引起手性嵌段共聚物中的相分离。 在优选的实施方案中,手性嵌段共聚物是聚(苯乙烯) - 聚(L-丙交酯)(PS-PLLA)手性嵌段共聚物,共聚方法是一种活性共聚方法,其包括以下步骤:(a) 用BPO和4-OH-TEMPO形成4-羟基-TEMPO封端的聚苯乙烯; 和(2)将4-羟基-TEMPO封端的聚苯乙烯与[η3 -EDBP] Li 2 N 2 [2] 优选的有机溶剂中的L 3→N 2→Bu)Li(0.5E 2 O 2)2 N 2和L-丙交酯 CH 2 2 Cl 2以形成聚(苯乙烯) - 聚(L-丙交酯)手性嵌段共聚物。 透射电子显微镜(TEM)和小X射线散射(SAXS)研究表明,当聚(L-丙交酯)的体积分数为约35-37%时,具有43.8纳米的间距和34.4纳米的直径的纳米级螺旋 被观察到。