Crowding for Confinement: Reversible Isomerization of First-Generation Donor-Acceptor Stenhouse Adduct Derivatives in Water Modulated by Thermoresponsive Dendritic Macromolecules DOI Creative Commons
Jiaxing Zhang,

Qinqin Ma,

Huan Wang

et al.

Molecules, Journal Year: 2024, Volume and Issue: 29(21), P. 5055 - 5055

Published: Oct. 26, 2024

Mimicking nature, the reversible isomerization of hydrophobic dyes in aqueous solutions is appealing for bio-applications. Here, we report on first-generation solvatochromic donor-acceptor Stenhouse adducts (DASAs) water within dendritic matrices, realized either through dendronization DASAs or incorporation DASA pendants into dendronized copolymers. These macromolecules contain three-fold oligoethylene glycols (OEGs), which afford water-solubility and unprecedented thermoresponsive behavior. The behavior both copolymers dominated by peripherals OEGs. However, hydrophilicity acceptor from moieties also play a role mediating their thermal phase transitions, more importantly, tailor interactions between OEGs moieties. Intriguingly, topologies contribute confinement to encapsulate crowding effects, cooperative crowded modulate with different media. thermally induced collapse OEGs, accompanied aggregation macromolecules, leads formation domains, exert enhanced effects efficiently Compared low molar mass DASAs, collapsed can retard hydration cooperation neighboring better confined microenvironments mediate recovery up 90% cyclic charged (hydrophilic) state noncharged (hydrophobic) linear water. This exhibits excellent fatigue resistance after several cycles alternating photo-irradiation annealing at elevated temperatures.

Language: Английский

Crowding for Confinement: Reversible Isomerization of First-Generation Donor-Acceptor Stenhouse Adduct Derivatives in Water Modulated by Thermoresponsive Dendritic Macromolecules DOI Creative Commons
Jiaxing Zhang,

Qinqin Ma,

Huan Wang

et al.

Molecules, Journal Year: 2024, Volume and Issue: 29(21), P. 5055 - 5055

Published: Oct. 26, 2024

Mimicking nature, the reversible isomerization of hydrophobic dyes in aqueous solutions is appealing for bio-applications. Here, we report on first-generation solvatochromic donor-acceptor Stenhouse adducts (DASAs) water within dendritic matrices, realized either through dendronization DASAs or incorporation DASA pendants into dendronized copolymers. These macromolecules contain three-fold oligoethylene glycols (OEGs), which afford water-solubility and unprecedented thermoresponsive behavior. The behavior both copolymers dominated by peripherals OEGs. However, hydrophilicity acceptor from moieties also play a role mediating their thermal phase transitions, more importantly, tailor interactions between OEGs moieties. Intriguingly, topologies contribute confinement to encapsulate crowding effects, cooperative crowded modulate with different media. thermally induced collapse OEGs, accompanied aggregation macromolecules, leads formation domains, exert enhanced effects efficiently Compared low molar mass DASAs, collapsed can retard hydration cooperation neighboring better confined microenvironments mediate recovery up 90% cyclic charged (hydrophilic) state noncharged (hydrophobic) linear water. This exhibits excellent fatigue resistance after several cycles alternating photo-irradiation annealing at elevated temperatures.

Language: Английский

Citations

1