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Kinetic Traps to Activate Stereomutation in Supramolecular Polymers
Author(s) -
Valera Jorge S.,
Gómez Rafael,
Sánchez Luis
Publication year - 2019
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201809272
Subject(s) - chirality (physics) , supramolecular chirality , supramolecular chemistry , monomer , kinetic energy , copolymer , helicity , chemistry , polymer , metastability , supramolecular polymers , photochemistry , polymer chemistry , crystallography , physics , organic chemistry , crystal structure , chiral symmetry breaking , particle physics , quantum mechanics , nambu–jona lasinio model , quark
The helical stereomutation in the kinetically controlled coassembly of the reported carbonyl‐bridged triarylamines (CBTs) is described. The copolymerization of chiral CBTs (S)‐1 or (R)‐1 with achiral 2 in sergeants‐and‐soldiers (SaS) experiments results in a tunable helicity conditioned by the percentage of the chiral sergeant and by the cooling rate. The dissimilar inherent chirality of the extended monomeric (M) and intramolecularly H‐bonded metastable (M*) species, as well as the different stability of the kinetic trap of the chiral CBTs (S)‐1 / (R)‐1 and the achiral CBT 2 , condition the chirality transfer and afford J‐aggregates of inverse handedness.
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