Click Synthesis of Shape-Persistent Azodendrimers and their Orthogonal Self-Assembly to Nanofibres
作者:Tamer El Malah、Hany F. Nour
DOI:10.1071/ch17644
日期:——
The copper(i)-catalyzedazide–alkynecycloaddition (CuAAC) reaction has been efficiently utilized to synthesize a series of dendrons with amino functionalities. The aminodendrons successfully underwent azodimerization to furnish a series of pyridyl- and phenyl-based azodendrimers with peripheral alkyl or ether side chain substituents. The molecular structures of the azodendrimers were fully assigned
铜(i)催化的叠氮化物-炔烃环加成(CuAAC)反应已被有效地用于合成一系列具有氨基官能度的树枝状分子。氨基树枝状分子成功地进行了偶氮二聚,以提供一系列具有外围烷基或醚侧链取代基的基于吡啶基和苯基的偶氮树状大分子。使用不同的光谱技术(例如1 H NMR和131 H NMR,和分子量使用MALDI-TOF质谱法测定。通过扫描电子显微镜和透射电子显微镜研究了偶氮树枝状聚合物的分子自组装,揭示了高度有序且均匀的自组装纳米纤维的形成。
An rht-type metal–organic framework constructed from an unsymmetrical ligand exhibiting high hydrogen uptake capability
An unsymmetrical hexatopic carboxylate acid (H6-1) ligand containing one acrylamide unit and two triazole groups was designed and synthesized, and then used to construct a metalâorganic framework (MOF Cu-ABTA) via a solvothermal reaction with Cu(NO3)2. A powder X-ray diffraction investigation indicated that the MOF Cu-ABTA possesses a (3,24)-connected rht-network, as does our previously reported MOF NTU-105 with three triazole groups. The gas sorption measurements revealed that Cu-ABTA shows high porosity and a very high H2-uptake capability with a strong H2 binding affinity as demonstrated by the enhanced isosteric heat of adsorption, which make it a highly promising candidate for clean energy storage.
A dendritic hexacarboxylate ligand featuring amine and triazole groups was rationally designed and synthesized, which was employed to construct a (3,24)-connected rht-type copper(II) metal-organic framework (MOF, NTU-105-NH2) under solvothermal conditions. The desolvated amine-functionalized MOP demonstrated improved CO2 and H-2 uptake capacity as well as significant higher selectivity towards CO2 over N-2 in comparison to its parent MOF. (C) 2014 Elsevier B.V. All rights reserved.