Stimuli-Triggered Dynamic Transformations in Supramolecular Polymers

Xue, Yuncong; Jin, Yu; Zhang, Yifei; Han, Fengmin; Wang, Feng

doi:10.1021/acs.chemmater.4c01265

Chem. Mater.

2024

DOI: 10.1021/acs.chemmater.4c01265

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Stimuli-Triggered Dynamic Transformations in Supramolecular Polymers

Yuncong Xue,

Yu Jin,

Yifei Zhang

et al.

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Cited by 4 publications

References 165 publications

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Supramolecular Polymer Additives as Repairable Reinforcements for Dynamic Covalent Networks

van der Tol,

Hafeez,

Bänziger

et al. 2024

Advanced Materials

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Employing rigid (in)organic materials as reinforcement for dynamic covalent networks (DCNs) is an effective approach to develop high‐performance materials. Yet, recycling of these materials after failure often necessitates inefficient chemical reprocessing or inevitably alters their performance due to unrepairable inert components. Here, a non‐covalent reinforcement strategy is presented by introducing a supramolecular additive to a DCN that can reversibly depolymerize and reform on demand, therefore acting as an adaptive and repairable reinforcement. The strong hydrogen‐bonding interactions in the supramolecular polymer of triazine‐1,3,5‐tribenzenecarboxamide (S‐T) strengthen the DCN at room temperature, while its non‐covalent nature allows for easy one‐pot reprocessing at high temperatures. Depending on wether S‐T is covalently bond to the DCN or not, it can play either the role of compatibilizer or filler, providing a synthetic tool to control the relaxation dynamics, reprocessability and mechanical properties. Moreover, the S‐T reinforcement can be chemically recovered with high yield and purity, showcasing the recyclability of the composite. This conceptually novel supramolecular reinforcement strategy with temperature‐controlled dynamics highlights the potential of supramolecular polymer additives to replace conventional unrepairable reinforcements.

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Supramolecular Polymer Additives as Repairable Reinforcements for Dynamic Covalent Networks

van der Tol,

Hafeez,

Bänziger

et al. 2024

Advanced Materials

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Wide-range tunable circularly polarized luminescence in triphenylamine supramolecular polymers via charge-transfer complexation

Guo,

Zhang,

et al. 2024

Nat Commun

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Circularly polarized luminescence materials with broad color tunability are highly valuable for applications in 3D display and photonic technologies. Here we show that incorporating intermolecular charge-transfer complexation into chiral supramolecular polymers is an efficient strategy to achieve this objective. Adjusting the charge-transfer strength between triphenylamine donors and naphthalenemonoimide acceptors enables tunable circularly polarized luminescence signals across the visible light spectrum. This includes blue-colored emission for the supramolecular donor polymers, as well as green, yellow, orange and red-colored emission for supramolecular donor–acceptor polymers. The donor–acceptor packing modes are further influenced by the presence or absence of acetylene linkages on the triphenylamine donors, resulting in ground- or excited-state charge transfer with varying luminescent lifetimes. Additionally, white-light circularly polarized luminescence is achieved by encapsulating blue- and orange-emitting species into surfactant-based micelles in a compartmentalized manner. Overall, manipulating charge-transfer complexation in supramolecular polymers provides an effective approach to wide-range tunable circularly polarized luminescence materials.

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Biomimetic light-harvesting antennas via the self-assembly of chemically programmed chlorophylls

Matsubara,

Shoji,

Tamiaki

2024

Chem. Commun.

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Stimuli-Triggered Dynamic Transformations in Supramolecular Polymers

Cited by 4 publications

References 165 publications

Supramolecular Polymer Additives as Repairable Reinforcements for Dynamic Covalent Networks

Supramolecular Polymer Additives as Repairable Reinforcements for Dynamic Covalent Networks

Wide-range tunable circularly polarized luminescence in triphenylamine supramolecular polymers via charge-transfer complexation

Biomimetic light-harvesting antennas via the self-assembly of chemically programmed chlorophylls

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