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Polymers of intrinsic microporosity (PIMs) formed by means of dioxane-forming reactions exhibit apparent Brunauer–Emmet–Teller (BET) specific surface areas of 500– 1000 m2 g1 depending on the structure of the monomers.Hyper-cross-linked polymers are another example of porous organic polymers that can display permanent porosity because of extensive chemical cross-links that prevent the polymer chains collapsing into dense solids. The simplest networks constructed from styrenic monomers have a wide range of BET surface areas (100–2000 m2g1) that depend mainly on the degree of cross-linking and the monomers.Amorphous conjugated microporous polymers can be synthesized with BET surface areas in the range 500–1200 m2 g1 by means of Pd0/CuI-catalyzed Sonogashira cross-coupling.[19] Micropore distributions of these conjugated poly(arylene ethynylene) materials could be controlled by means of the rigid node–strut topology, in particular by the average strut length,[19a,b] and this implies that order and crystallinity are not prerequisites for precise control over porosity of materials. These previous reports strongly suggest that selection of the right monomer is a critical factor to achieve synthetic porous organic polymers with high surface area and narrow pore size distribution. |
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武汉一心一译 
捐助贵宾 (著名写手)
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爱与雨下: 金币+1 2015-03-20 22:27:00
大四写论文: 金币+40, ★★★很有帮助 2015-03-21 12:16:34
爱与雨下: 金币+1 2015-03-20 22:27:00
大四写论文: 金币+40, ★★★很有帮助 2015-03-21 12:16:34
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Polymers of intrinsic microporosity (PIMs) formed by means of dioxane-forming reactions exhibit apparent Brunauer–Emmet–Teller (BET) specific surface areas of 500–1000 m2 g1 depending on the structure of the monomers. 依靠单体结构，通过二氧己环形成反应生成的自具微孔聚合物(PIMs) ，展现出的明显布BET(鲁诺(Brunauer)、埃麦特(Emmet)和泰勒(Teller))比表面积达 500–1000 m2 g1. Hyper-cross-linked polymers are another example of porous organic polymers that can display permanent porosity because of extensive chemical cross-links that prevent the polymer chains collapsing into dense solids. 多孔有机聚合物的另一个例子-超高交联聚合物，因其广泛的化学交联反应，有效的阻止了高分子链倒塌到稠密的固体组织中，因而它们能够展现出永久的多孔性。 The simplest networks constructed from styrenic monomers have a wide range of BET surface areas (100–2000 m2g1) that depend mainly on the degree of cross-linking and the monomers. 由苯乙烯构建成的最简单的网络，有广泛的BET比表面积范围（100–2000 m2g1），其主要取决于于交联程度和单体分子。 Amorphous conjugated microporous polymers can be synthesized with BET surface areas in the range 500–1200 m2 g1 by means of Pd0/CuI-catalyzed Sonogashira cross-coupling. Pd0/CuI作催化剂的薗头偶合反应，可以合成比表面积范围为500–1200 m2 g1的非晶态共轭微孔聚合物。 [19] Micropore distributions of these conjugated poly(arylene ethynylene) materials could be controlled by means of the rigid node–strut topology, in particular by the average strut length,[19a,b] and this implies that order and crystallinity are not prerequisites for precise control over porosity of materials. 运用刚性节点-支柱拓扑（尤其是，平均支柱长度[19a,b]），可以控制这些共轭聚合材料（亚芳基，亚乙炔基）的微孔分布。这表明结晶度和顺序，不是准确控制材料多孔性的先决条件。 These previous reports strongly suggest that selection of the right monomer is a critical factor to achieve synthetic porous organic polymers with high surface area and narrow pore size distribution. 此前这些报道，强烈建议，选择正确的单体是决定性因数，决定着能否成功合成，高表面积，窄气孔的多孔有机聚合物。 |
2楼2015-03-20 16:42:56