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Single‐walled carbon nanotube absolute‐handedness chirality assignment confirmation using metalized porphyrin's supramolecular structures via STM imaging technique
Author(s) -
Abd ElMageed Ahmed I. A.,
Ogawa Takuji
Publication year - 2020
Publication title -
chirality
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.43
H-Index - 77
eISSN - 1520-636X
pISSN - 0899-0042
DOI - 10.1002/chir.23163
Subject(s) - chirality (physics) , porphyrin , chemistry , supramolecular chirality , supramolecular chemistry , enantiomer , scanning tunneling microscope , carbon nanotube , ring (chemistry) , absolute configuration , crystallography , derivative (finance) , nanotechnology , stereochemistry , photochemistry , materials science , organic chemistry , crystal structure , physics , chiral symmetry breaking , quantum mechanics , financial economics , nambu–jona lasinio model , economics , quark
Abstract This work reports confirmation of the experimental assignment of the absolute‐handedness chirality of single‐walled carbon nanotubes (SWNTs). This was achieved by applying the scanning tunneling microscopy (STM) imaging technique to a supramolecular composite consisting of a metalized porphyrin derivative (nickel‐5,15‐bisdodecylporphyrin [Ni‐BDP]) affixed to the surfaces of chiral‐concentrated SWNTs (with right‐handed helix P‐ and left‐handed helix M‐ ). On the basis of the handedness chirality, different chiral supramolecular structures of Ni‐BDP were observed on the surfaces of the two SWNT enantiomers. The incorporation of a metal center into the porphyrin ring did not significantly affect the SWNT absolute‐handedness chirality assignment, the large pi‐system porphyrin ring being the crucial factor. These findings will effectively pave the way towards the clear selective synthesis, separation, chemistry, and applications of SWNT enantiomers.