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Controlling Size‐Dispersion of Single Walled Carbon Nanotubes by Interaction with Polyoxometalates Armed with a Tryptophan Tweezer
Author(s) -
Syrgiannis Zois,
Trautwein Guido,
Calvaresi Matteo,
Modugno Gloria,
Zerbetto Francesco,
Carraro Mauro,
Prato Maurizio,
Bonchio Marcella
Publication year - 2019
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201800660
Subject(s) - chemistry , carbon nanotube , tryptophan , nanotechnology , dispersion (optics) , carbon fibers , chemical engineering , composite number , composite material , optics , amino acid , biochemistry , materials science , physics , engineering
A bis‐tryptophan tweezer was installed on a polyoxometalate (POM) surface via a bis‐amide covalent bond, yielding the enantiopure hybrid POM with C 2 symmetry, as a result of the regioselective functionalization of decatungosilicate [γ‐SiW 10 O 36 ] 8– at the lacunary site. The combined polyanionic and receptor properties are instrumental for a POM‐driven solubilization and enrichment of single walled carbon nanotubes (SWCNTs) with diameter <1.1 nm, as demonstrated by Raman and UV/Vis‐NIR evidence, in agreement with the calculated energetics of the tryptophan tweezer–SWCNT interaction.