“Texas-Sized” Molecular Boxes: Building Blocks for the Construction of Anion-Induced Supramolecular Species via Self-Assembly
作者:Han-Yuan Gong、Brett M. Rambo、Vincent M. Lynch、Karin M. Keller、Jonathan L. Sessler
DOI:10.1021/ja401893w
日期:2013.4.24
It was previously established that the flexible tetraimidazolium macrocycle cyclo[2](2,6-bis(1H-imidazol-1-yl)pyridine)[2](1,4-dimethylenebenzene) (1(4+)) is capable of stabilizing higher-order supramolecular structures via both anion and cation recognition. Described herein is a set of structurally related imidazolium macrocycles (2(4+)-4(4+)) that contain modified central cores. The flexible nature
Assessing Guest Selectivity within Metallacrown Host Compartments
作者:Choong‐Sun Lim、Annabel Cutland Van Noord、Jeff W. Kampf、Vincent L. Pecoraro
DOI:10.1002/ejic.200700054
日期:2007.4
complexes associate in the solid state to form chiral compartments capable of binding guests. Using small molecular yardsticks, we are able to assess the size restrictions of these structures. Dicarboxylate guests that are too short to span the GdIII ions are stabilized by solvates that hydrogen bond to the uncoordinated carboxylate, while guests that are too long destroy the weakly associated structure
SALE‐Ing a MOF‐Based “Ship of Theseus.” Sequential Building‐Block Replacement for Complete Reformulation of a Pillared‐Paddlewheel Metal‐Organic Framework
作者:Yan Xu、Nicolaas A. Vermeulen、Yangyang Liu、Joseph T. Hupp、Omar K. Farha
DOI:10.1002/ejic.201600069
日期:2016.9
A complete structure and composition evolution of a pillared‐paddlewheel metal‐organic framework was achieved using a combination of solvent‐assisted linker exchange (SALE) and node transmetalation. In this example, each building unit – the di‐topic carboxylate strut, the di‐topic nitrogen‐based pillar, and the di‐zinc node – of the original metal‐organic framework is replaced in sequential fashion to produce a nickel‐based daughter metal‐organic framework with entirely different components.
MICROPOROUS COORDINATION COMPLEX AND METHOD OF MAKING THE SAME
申请人:Matzger Adam J.
公开号:US20140234624A1
公开(公告)日:2014-08-21
Disclosed herein is a three-dimensional coordination complex that includes a plurality of inorganic centers; a plurality of a first bis(bidentate) linker; and a plurality of a second bis(bidentate) linker, where the first and the second bis(bidentate) linkers are have different lengths, and the bidentate binding sites on each linker face in opposite directions on an axis.
The 2,6-naphthalenedicarboxylate ion (2,6-NDC) was included into the interior cavity of 3A,6A-anhydro-β-cyclodextrin (1) in D2O containing 0.1 mol dm−3 Na2CO3 and caused a shift in the 1H NMR signals due to the C3- and C5-H’s of 1 to different directions, depending on the positions of glucose units (anisotropic ring-current effect). The decrease in entropy accompanied by the complexation was much larger than that for the complexation of native β-cyclodextrin with 2,6-NDC. These results indicate that the molecular rotation of 2,6-NDC is retarded within the deformed cavity of 1.