Kinetic Traps to Activate Stereomutation in Supramolecular Polymers
| Autor: | Jorge S. Valera, Luis Sánchez, Rafael Gomez |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
010405 organic chemistry General Chemistry General Medicine Kinetic energy Inherent chirality 010402 general chemistry Helicity 01 natural sciences Catalysis 0104 chemical sciences Supramolecular polymers Crystallography chemistry.chemical_compound Monomer chemistry Metastability Copolymer Chirality (chemistry) |
| Zdroj: | Angewandte Chemie (International ed. in English). 58(2) |
| ISSN: | 1521-3773 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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