TY  - JOUR
AB  - The supramolecular polymerization of an acid-sensitive pyridyl-based ligand (L1) bearing a photoresponsive azobenzene moiety was elucidated by mechanistic studies. Addition of trifluoroacetic acid (TFA) led to the transformation of the antiparallel H-bonded fibers of L1 in methylcyclohexane into superhelical braid-like fibers stabilized by H-bonding dimers held together by unconventional pyridine–TFA N···H···O bridges represent the main structural elements of the assembly. UV-light irradiation caused a strain-driven disassembly and subsequent aggregate reconstruction, which ultimately led to short fibers. The results allowed to understand the mechanism of mutual influence of acid and light stimuli on supramolecular polymerization processes, thus opening up new possibilities to design advanced stimulitriggered supramolecular systems.
AU  - Kartha, Kalathil K.
AU  - Allampally, Naveen Kumar
AU  - Yagai, Shiki
AU  - Albuquerque, Rodrigo Q.
AU  - Fernández, Gustavo
DA  - 2019-05-07
DO  - 10.1002/chem.201900775
KW  - säure-empfindlich
KW  - lichtempfindlich
KW  - Selbstorganisation
KW  - supramolekulare Polymere
KW  - p-konjugierte Systeme
KW  - acid-sensitive
KW  - photoresponsive
KW  - self-assembly
KW  - supramolecular polymers
KW  - p-conjugated systems
LA  - eng
N1  - Chem. Eur. J. (2019) 25, 9230-9236
N1  - This work was supported by the European Commission (ERC-StG-2016 SUPRACOP-
715923) and the Humboldt Foundation (Sofja Kovalevskaja)
PY  - 2019-05-07
TI  - Mechanistic Insights into the Self-Assembly of an Acid-Sensitive Photoresponsive Supramolecular Polymer
TT  - Mechanistische Einblicke in die Selbstorganisation eines säure-empfindlichen photoresponsiven supramolekularen Polymers
UR  - https://nbn-resolving.org/urn:nbn:de:hbz:6-30189432071
Y2  - 2024-11-22T00:10:13
ER  -