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Narrowing Segments of Helical Carbon Nanotubes with Curved Aromatic Panels
Author(s) -
Kogashi Kanako,
Matsuno Taisuke,
Sato Sota,
Isobe Hiroyuki
Publication year - 2019
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.201902893
Subject(s) - dipole , cylinder , moment (physics) , radius , ring (chemistry) , materials science , magnetic dipole , arylene , carbon nanotube , molecular physics , condensed matter physics , crystallography , chemistry , nanotechnology , geometry , physics , mathematics , classical mechanics , organic chemistry , computer security , alkyl , computer science , aryl
Rigid molecular cylinders with a 1 nm diameter were synthesized by assembling arylene panels with Pt‐mediated macrocylization. Chrysenylene panels that previously participated in tetrameric macrocyclization were contorted by the addition of two benzo groups on the sides to form dibenzochrysenylene, which allowed for a reduction in the numbers of participating panels to three. Consequently, narrowed cyclochrysenylene congeners were obtained. The narrowed chiral cylinders possessed width‐dependent chiroptical properties. The magnetic transition dipole moment was dictated by the radius of a ring‐current‐like circle that was formed by local electric transition dipole moments on the cylinder.