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- W3023647098 endingPage "10013" @default.
- W3023647098 startingPage "10005" @default.
- W3023647098 abstract "Abstract Besides their widespread use in coordination chemistry, 2,2’‐bipyridines are known for their ability to undergo cis–trans conformational changes in response to metal ions and acids, which has been primarily investigated at the molecular level. However, the exploitation of such conformational switching in self‐assembly has remained unexplored. In this work, the use of 2,2’‐bipyridines as acid‐responsive conformational switches to tune supramolecular polymerization processes has been demonstrated. To achieve this goal, we have designed a bipyridine‐based linear bolaamphiphile, 1 , that forms ordered supramolecular polymers in aqueous media through cooperative aromatic and hydrophobic interactions. Interestingly, addition of acid (TFA) induces the monoprotonation of the 2,2’‐bipyridine moiety, leading to a switch in the molecular conformation from a linear ( trans ) to a V‐shaped ( cis ) state. This increase in molecular distortion along with electrostatic repulsions of the positively charged bipyridine‐H + units attenuate the aggregation tendency and induce a transformation from long fibers to shorter thinner fibers. Our findings may contribute to opening up new directions in molecular switches and stimuli‐responsive supramolecular materials." @default.
- W3023647098 created "2020-05-13" @default.
- W3023647098 creator A5003060688 @default.
- W3023647098 creator A5012817310 @default.
- W3023647098 creator A5015757629 @default.
- W3023647098 creator A5016038774 @default.
- W3023647098 creator A5032502315 @default.
- W3023647098 creator A5055057107 @default.
- W3023647098 creator A5057815523 @default.
- W3023647098 creator A5071277078 @default.
- W3023647098 creator A5078700599 @default.
- W3023647098 creator A5090003045 @default.
- W3023647098 date "2020-07-14" @default.
- W3023647098 modified "2023-10-02" @default.
- W3023647098 title "Tuning Aqueous Supramolecular Polymerization by an Acid‐Responsive Conformational Switch" @default.
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- W3023647098 doi "https://doi.org/10.1002/chem.202001566" @default.