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Histidine-Controlled Homochiral and Ferroelectric Metal-Organic Frameworks

机译:组氨酸控制的手性和铁电金属有机骨架

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摘要

A new multifunctional enantiopure ligand, (S)-2-(1,8-naphthalimido)-3-(4-imidazole)propanoate (s-nip), containing a homochiral center derived from l-histidine and a strong pi center dot center dot center dot pi stacking 1,8-naphthalimide synthon, has been used to prepare three novel metalorganic frameworks. The frameworks of [Zn(s-nip)(2)](n) (1) and {[Co(s-nip)(2)]center dot(H2O)(0.5)}(n) (2) are isostructural three-dimensional (3D) homochiral supramolecular structures organized one-dimensional (1D) ribbons by strong hydrogen bonds and pi center dot center dot center dot pi interactions, which display ferroelectric behavior at room temperature. The complex [Cu(nia)(2)center dot(H2O)(5)](n) (3) was constructed under a hydrothermal in situ ligand synthesis reaction, in which the new ligand 2-(1,8-naphthalimido)-3-(4-imidazole)acrylate (nia) was formed from the s-nip ligand via a dehydrogenation reaction. The two-dimensional network of 3 stacks into a 3D structure via pi center dot center dot center dot pi interactions resulting in 1D hydrophilic channels.
机译:一种新的多功能对映体纯配体(S)-2-(1,8-萘二甲酰亚胺)-3-(4-咪唑)丙酸酯(s-nip),其包含衍生自l-组氨酸的同手性中心和强pi中心点中心点中心点pi堆叠1,8-萘二甲酰亚胺合成子,已被用于制备三个新颖的金属有机骨架。 [Zn(s-nip)(2)](n)(1)和{[Co(s-nip)(2)]中心点(H2O)(0.5)}(n)(2)的框架是同构的三维(3D)同手性超分子结构通过强氢键和pi中心点中心点中心点pi相互作用来组织一维(1D)碳带,在室温下显示出铁电行为。 [Cu(nia)(2)中心点(H2O)(5)](n)(3)是在水热原位配体合成反应中构建的,其中新的配体2-(1,8-萘二甲酰亚胺) s-nip配体通过脱氢反应形成-3-(4-咪唑)丙烯酸酯(nia)。通过pi中心点pi中心点pi中心点pi相互作用,将3个二维网络堆叠为3D结构,从而形成一维亲水通道。

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