872820-77-4Relevant articles and documents
Divergent Synthesis of Porous Tetraphenylmethane Dendrimers
Urzúa, Julio I.,Torneiro, Mercedes
, p. 13231 - 13238 (2017/12/26)
Tetraphenylmethane-ethynylene-based shape-persistent dendrimers are a new class of nanoobjects with an intriguing 3D architecture. We report an efficient divergent strategy for their synthesis based on the Sonogashira Pd-catalyzed coupling of terminal alkynes with aryl iodides. As repeat unit, we prepared a tetraphenylmethane derivative bearing a terminal alkyne and three triazene moieties. Coupling of this building block to tetrakis(p-iodophenyl)methane afforded, after triazene activation, a dodecaiodo-terminated first generation dendrimer, which was transformed by another Sonogashira coupling into a methoxy-terminated second generation dendrimer with persistent globular shape and well-defined cavities. This work also unveils new aspects of triazene chemistry, i.e., the unprecedented efficient generation of an azo compound by mixing of a triazene with phenol.
Deposition of ordered layers of tetralactam macrocycles and ether rotaxanes on pyridine-terminated self-assembled monolayers on gold
Richter, Sebastian,Poppenberg, Johannes,Traulsen, Christoph H.-H.,Sokolowski, Anja,Sattler, Dominik,Schalley, Christoph A.,Darlatt, Erik,Unger, Wolfgang E. S.
supporting information, p. 16289 - 16297,9 (2020/09/09)
The deposition of tetralactam macrocycles and the corresponding benzyl ether rotaxanes on gold substrates is investigated for the first time exploiting metallo-supramolecular chemistry. Two pyridine-terminated self-assembled monolayers (SAMs) are develope
