Premium
Twisted N‐Doped Nano‐Graphenes: Synthesis, Characterization, and Resolution
Author(s) -
Hahn Uwe,
Maisonhaute Emmanuel,
Nierengarten JeanFrançois
Publication year - 2018
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201805852
Subject(s) - diastereomer , characterization (materials science) , doping , derivative (finance) , materials science , resolution (logic) , nano , block (permutation group theory) , nanotechnology , stereochemistry , optoelectronics , chemistry , composite material , mathematics , geometry , computer science , artificial intelligence , financial economics , economics
Abstract Two diastereoisomeric N‐doped nanographene derivatives have been efficiently prepared in two synthetic steps starting from an ethynylated hexaazatriphenylene building block. The first derivative adopts a D 3 ‐symmetrical propeller‐shaped structure with three equivalent nanographene foils. The structure of the second diastereoisomer is C 2 ‐symmetrical and differs from the first one by the way two peripheral nanographene foils overlap. Owing to their intertwined structures, the two N‐doped nanographenes are soluble in organic solvents and could be characterized by a combination of several analytical tools. Resolution of the D 3 ‐symmetrical derivative has been achieved and CD measurements revealed extremely strong Cotton effects.