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首页> 外文期刊>Crystal growth & design >From helical array to porous architecture: Exploring the use of side chains of amino acids to engineer ID infinite coordination polymeric chain into porous frameworks
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From helical array to porous architecture: Exploring the use of side chains of amino acids to engineer ID infinite coordination polymeric chain into porous frameworks

机译:从螺旋阵列到多孔结构:探索使用氨基酸侧链将ID无限配位聚合物链工程化为多孔框架

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摘要

The self-assembly of D,L-amino acids and Cu(NO3)(2)center dot 3H(2)O with 4,4'-bipyridine in basic ethanol/aqueous solution gave rise to two distinct three-dimensional (3D) supramolecular architectures {[Cu-2(D-ala)(L-ala)(4,4'-bipy)(2)](NO3)(2)center dot 5H(2)O}, (1) and {[Cu-2(D-phe)(L-phe)(4,4'-bipy)(2)](NO3)(OH)center dot 5H(2)O}(n) (ala = alanine anion, phe = phenylalanine anion, 4,4'-bipy = 4,4'-bipyridine) (2). In 1, Cu(II) centers chelated by deprotoned D,L-alanine direct linear 4,4'-bipy to form a one-dimensional (1D) helical chain, which is further assembled into 3D helical array through interchain hydrogen bonds and anion guest chains. In 2, Cu(II) centers chelated by deprotoned D,L-phenylalanine direct 4,4'-bipy to form a 1D twisted coordination polymeric chain that interacts with four adjacent chains through complementary coordination interactions and two chains through weak pi-pi interactions to give a 3D porous framework.
机译:D,L-氨基酸和Cu(NO3)(2)中心点3H(2)O与4,4'-联吡啶在碱性乙醇/水溶液中的自组装产生两个不同的三维(3D)超分子构架{[Cu-2(D-ala)(L-ala)(4,4'-bipy)(2)](NO3)(2)中心点5H(2)O},(1)和{[ Cu-2(D-phe)(L-phe)(4,4'-bipy)(2)](NO3)(OH)中心点5H(2)O}(n)(ala =丙氨酸阴离子,phe =苯丙氨酸阴离子,4,4'-联吡啶= 4,4'-联吡啶)(2)。在1中,Cu(II)中心被去质子化的D,L-丙氨酸直接线性4,4'-bipy螯合形成一维(1D)螺旋链,通过链间氢键和阴离子进一步组装成3D螺旋阵列宾客链。在2中,Cu(II)中心被去质子化的D,L-苯丙氨酸直接4,4'-bipy螯合,形成一维扭曲配位聚合物链,该聚合物链通过互补配位相互作用与四个相邻链相互作用,而两个链通过弱pi-pi相互作用而相互作用提供3D多孔框架。

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