Premium
Self‐Assembly of Diacetylene‐Bridged Phenylenevinylene Oligomers in Water and Organic Solvents
Author(s) -
GarcíaIglesias Miguel,
Mayoral María José,
SerranoMolina David,
Aparicio Fátima,
VázquezGonzález Violeta,
GonzálezRodríguez David
Publication year - 2019
Publication title -
chempluschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.801
H-Index - 61
ISSN - 2192-6506
DOI - 10.1002/cplu.201900207
Subject(s) - diacetylene , conjugated system , nucleation , cooperativity , self assembly , aqueous solution , polymer chemistry , molecule , photochemistry , materials science , chemistry , chemical engineering , polymer , organic chemistry , polymerization , biochemistry , engineering
Rodlike π‐conjugated molecules in which two OPV fragments are connected through a diacetylene bond self‐assemble in aqueous and organic media. Optical spectroscopy and AFM measurements indicated that, in water, strong hydrophobic interactions between π‐cores promote aggregation into robust, uniform micellar structures. In contrast, in apolar solvents, a fibrilar morphology is obtained by coiling of columnar stacks. These stacks are formed in a nucleation‐elongation process with degrees of cooperativity of 0.006, that is influenced by the low rotation barriers around the σ‐bonds in the diacetylene linker.