Imine-Based Transient Supramolecular Polymers DOI Creative Commons
Gabriele Melchiorre,

Lucia Visieri,

Matteo Valentini

и другие.

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Март 19, 2025

Systems that change properties upon exposure to chemical stimuli offer the interesting prospect of (partially) mimicking functions living systems. Over past decade, numerous supramolecular systems whose composition and are regulated by dissipation fuels have been reported. These typically based on transient transformation a "dormant" species into an active, self-assembling monomer. The process is powered fuel consumption terminates depletion, restoring initial dormant state. Previously reported out-of-equilibrium polymerizations relied activation adding or removing small structural units enable polymerization. Here, we present approach combines reversibility dynamic covalent chemistry trigger "recycling" components combinatorial library (DCL). Treatment equilibrated DCL aliphatic imines aromatic amines with activated carboxylic acid (ACA) generates dissipative protonated amines. acidic conditions creation polymer held together interactions between crown ether moieties embedded in scaffold imines. Thus, reshuffles connectivity enables temporary purely (polymeric) system polymer. We demonstrate strategy using two different feedstocks consisting diimine macrocycle involving calix[4]arene distribution imine (cyclo)oligomers derived from isophthalaldehyde skeleton.

Язык: Английский

Photoswitchable Imines Drive Dynamic Covalent Systems to Nonequilibrium Steady States DOI Creative Commons
Jiarong Wu, Jake L. Greenfield

Journal of the American Chemical Society, Год журнала: 2024, Номер 146(30), С. 20720 - 20727

Опубликована: Июль 18, 2024

Coupling a photochemical reaction to thermal exchange process can drive the latter nonequilibrium steady state (NESS) under photoirradiation. Typically, systems use separate motifs for photoresponse and equilibrium-related processes. Here, we show that photoswitchable imines fulfill both roles simultaneously, autonomously driving dynamic covalent system into NESS continuous light irradiation. We demonstrate this using transimination reactions, where

Язык: Английский

Процитировано

11
Imine-Based Transient Supramolecular Polymers DOI Creative Commons
Gabriele Melchiorre,

Lucia Visieri,

Matteo Valentini

и другие.

Journal of the American Chemical Society, Год журнала: 2025, Номер unknown

Опубликована: Март 19, 2025

Systems that change properties upon exposure to chemical stimuli offer the interesting prospect of (partially) mimicking functions living systems. Over past decade, numerous supramolecular systems whose composition and are regulated by dissipation fuels have been reported. These typically based on transient transformation a "dormant" species into an active, self-assembling monomer. The process is powered fuel consumption terminates depletion, restoring initial dormant state. Previously reported out-of-equilibrium polymerizations relied activation adding or removing small structural units enable polymerization. Here, we present approach combines reversibility dynamic covalent chemistry trigger "recycling" components combinatorial library (DCL). Treatment equilibrated DCL aliphatic imines aromatic amines with activated carboxylic acid (ACA) generates dissipative protonated amines. acidic conditions creation polymer held together interactions between crown ether moieties embedded in scaffold imines. Thus, reshuffles connectivity enables temporary purely (polymeric) system polymer. We demonstrate strategy using two different feedstocks consisting diimine macrocycle involving calix[4]arene distribution imine (cyclo)oligomers derived from isophthalaldehyde skeleton.

Язык: Английский

Процитировано

0