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ChemistryOpen, 2022 A pseudo‐rotaxane is a host−guest complex composed of a linear molecule encircled by a macrocyclic ring. These complexes can be assembled by sliding the host over the guest terminal groups.
Dr. Aldo C. Catalán +3 more
doaj +1 more source
Molecules, 2023 Synthetic approach to fluorescent polyaza- and polyoxadiazamacrocycles comprising a structural fragment of 6,7-diamino-2,3-diphenylquinoxaline has been elaborated using Pd-catalyzed amination providing target compounds in yields up to 77%.
Igor A. Kurashov +4 more
doaj +1 more source
Impact of Threading State on the Mechanics of γ‐Cyclodextrin–Pyrene Gels
Angewandte Chemie, EarlyView.Tuning the threading state of discrete γ‐cyclodextrin (γ‐CD)–pyrene pseudorotaxane crosslinkers controls gel topology and ring mobility. The resulting doubly threaded slide‐ring networks exhibit solvent‐switchable dissipative dynamics, high extensibility, rate‐dependent mechanics, and low hysteresis, revealing how crosslink topology governs macroscopic
Jongwon Oh +8 more
wiley +2 more sources
Photochromism change by conformation control in macrocyclic boronic ester cavity [PDF]
Acta Crystallographica Section A Foundations and Advances, 2014 N-salicylideneaniline derivatives are known to show photochromism by UV light, and it depends on the molecular conformation in the crystal. The twisted molecule is photochromic but the planar one is not[1,2]. N-salicylidene-2-aminopyridine (2SAP) always has a planar conformation due to the chemical structure without steric hindrance, therefore 2SAP is ...
Kohei Johmoto +5 more
openaire +1 more source
Divergent Synthesis of Möbius and Hückel N‐Heterocycloarenes From a Common Macrocyclic Backbone
Angewandte Chemie, EarlyView.In the divergent synthesis of Möbius and Hückel N‐heterocycloarenes from a common macrocyclic precursor, the annulation reaction dictates topology: Scholl reaction gives Möbius topology, while InCl3‐mediated alkyne annulation gives Hückel topology. The Möbius N‐heterocycloarene is unevenly contorted as revealed by crystal structure, and the Hückel N ...
Han Chen +6 more
wiley +2 more sources
Rapidly Diversifying Hydrogen‐Bonded Organic Frameworks With Permanent Porosity
Angewandte Chemie, EarlyView.This article reviews diversifying hydrogen‐bonded organic frameworks (HOFs) with permanent porosity reported over the past 15 years, based on the molecular structures of their constituent tectons. Furthermore, several distinctive aspects and concepts are described, such as permanent porosity, isostructural (isoreticular) HOFs, and multicomponent mixed ...
Taito Hashimoto, Ichiro Hisaki
wiley +2 more sources
Shaping the Cavity of the Macrocyclic Ligand in Metallocalix[4]arenes: The Role of the Ligand Sphere [PDF]
, 2016 The coordination form of calix[4]arene ligands and therefore the cavity of the macrocyclic ligand can be controlled by other ligands in transition metal calix[4]arene complexes, if strong directing coligands such as oxo groups are used.
Udo Radius (1450834)
core +3 more sources
Macrocyclic Hosts in Asymmetric Phase-Transfer Catalyzed Reactions [PDF]
, 2018 The introduction and development of neutral macrocyclic hosts capable of complexing ions within their pre-organized cavity, has been of utmost importance in supramolecular chemistry. Their ability to form stable organic-soluble metal-macrocycle complexes
Izzo, Irene +4 more
core +1 more source