Spin Filtering in Supramolecular Polymers Assembled from Achiral Monomers Mediated by Chiral Solvents
作者:Amit Kumar Mondal、Marco D. Preuss、Marcin L. Ślęczkowski、Tapan Kumar Das、Ghislaine Vantomme、E. W. Meijer、Ron Naaman
DOI:10.1021/jacs.1c02983
日期:2021.5.12
observed in polymers and supramolecular structures that are based on homochiral building blocks possessing stereocenters. Here we address the question to what extent chiral building blocks are required for observing the chiral induced spin selectivity (CISS) effect. We demonstrate the CISS effect in supramolecular polymers exclusively containing achiral monomers, where the supramolecular chirality was induced
Porous Chiral Metal Organic Carboxylate Frameworks with a Double-interwoven SrSi<sub>2</sub>Topology: M<sub>3</sub>(TTCA)<sub>2</sub>·6DMF·7H<sub>2</sub>O (TTCA = triphenylenetricarboxylate; M = Zn<sup>2+</sup>, Cd<sup>2+</sup>)
作者:Jae Yong Choi、Jeo Kim、Hiroyasu Furukawa、Hee K. Chae
DOI:10.1246/cl.2006.1054
日期:2006.9
We have succeeded in assembling a new trigonal aryne ligand, triphenylene-2,6,10-tricarboxylic acid (H3TTCA) with metal ions to give M3(TTCA)2·6DMF·7H2O (M = Zn2+ and Cd2+) (DMF = N,N-dimethylformamide), which networks show non-interpenetrated porous metal carboxylate frameworks and belong to a novel doubly-interwoven SrSi2 topology.
Simple ester derivatives of polycyclic arenes offer access to light-emitting diodes of nearly any visible color by making use of the good charge-transport properties of the columnar liquid crystals of these derivatives. The picture shows the orange-red electroluminescence of a light-emitting diode containing the perylene 3,4,9,10-tetracarboxylic acid ethyl ester (structure shown, R=Et). Through use of multiple layers of different esters light-emitting diodes with almost white luminescence can be obtained.