Monitoring the chemistry of self-healing by vibrational spectroscopy – current state and perspectives

Zedler, Linda; Hager, Martin D.; Schubert, Ulrich S.; Harrington, Matthew J.; Schmitt, Michael; Popp, Juergen; Dietzek, Benjamin

doi:10.1016/j.mattod.2014.01.020

Cited by 63 publications

(51 citation statements)

References 97 publications

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“…The next step was the investigation of the molecular process as well as the reversibility of the network in the solid state. For this purpose, Raman spectroscopy is a powerful tool in order to understand the molecular processes of self‐healing systems …”

Section: Resultsmentioning

confidence: 99%

Self‐Healing Polymer Networks Based on Reversible Michael Addition Reactions

Kuhl

Geitner

Bose

et al. 2016

Macro Chemistry & Physics

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A new polymeric material utilizing a highly efficient as well as reversible thiol‐ene click reaction is presented. For this purpose, a trithiol is reacted with a bisbenzylcyanoacetamide derivative resulting in the formation of a dynamic polymer network. The self‐healing ability of this novel material is tested by scratch healing experiments. Healing is found to take place from 60 °C onward. The underlying healing mechanism is studied in detail using temperature‐dependent Raman spectroscopy confirming the reversible opening of the thiol‐ene adducts. Additionally, the thermal and mechanical properties are investigated by differential scanning calorimetry, thermogravimetric analysis, and rheological measurements proving the network formation as well as its reversibility during the thermal treatment.

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Section: Resultsmentioning

confidence: 99%

Self‐Healing Polymer Networks Based on Reversible Michael Addition Reactions

Kuhl

Geitner

Bose

et al. 2016

Macro Chemistry & Physics

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“…On the one hand, macroscopic selfhealing in nature can rehabilitate broken bones or injured skin and, on the other hand, it can occur on a molecular scale. Repair of DNA through various processes after self-replication [211], regeneration of hydra (fresh-water polyps) [212], recovery of egg capsules of marine whelks [213], and the self-healing behavior of mussel byssal threads after stress [214] are just a few of thousands of natural examples. However, the latter example has been widely discussed in recent years [215][216][217][218][219][220].…”

Section: Self-healing Metallopolymersmentioning

confidence: 99%

Intrinsic Self-Healing Polymers Based on Supramolecular Interactions: State of the Art and Future Directions

Enke

Döhler

Bode

et al. 2015

Self-Healing Materials

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Supramolecular polymers are an intriguing class of materials with dynamic behavior as a result of the presence of non-covalent bonds. These bonds include hydrogen bonds, metallopolymers, ionomers, host-guest as well as π-π interactions. The strength of these supramolecular bonds can be tuned by varying the binding motifs. Their reversible and dynamic character can be utilized to engineer self-healing polymers. This review briefly presents the preconditions for design of self-healing polymers and summarizes the development of supramolecular self-healing polymers based on various non-covalent interactions. Furthermore, challenges and perspectives for the understanding of self-healing mechanisms and the preparation of novel materials with enhanced properties are discussed.

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“…To correctly apply this crosslinker in a variety of systems, understanding and describing the structural and electronic influence in its properties is crucial. In fact, previous works have highlighted the importance of wider studies of the self‐healing behavior, especially through theoretical simulations and characterization . Nonetheless, common understandings such as polymer architecture and the influence of side‐chains are still being needed.…”

Section: Introductionmentioning

confidence: 99%

Dynamic covalent bond from first principles: Diarylbibenzofuranone structural, electronic, and oxidation studies

2017

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A structure that can self-heal under standard conditions is a challenge faced nowadays and is one of the most promising areas in smart materials science. This can be achieved by dynamic bonds, of which diarylbibenzofuranone (DABBF) dynamic covalent bond is an appealing solution. In this report, we studied the DABBF bond formation against arylbenzofuranone (ABF) and O reaction (autoxidation). Our results show that the barrierless DABBF bond formation is preferred over autoxidation due to the charge transfer process that results in the weakly bonded superoxide. We calculated the electronic and structural properties using total energy density functional theory. © 2017 Wiley Periodicals, Inc.

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Monitoring the chemistry of self-healing by vibrational spectroscopy – current state and perspectives

Cited by 63 publications

References 97 publications

Self‐Healing Polymer Networks Based on Reversible Michael Addition Reactions

Self‐Healing Polymer Networks Based on Reversible Michael Addition Reactions

Intrinsic Self-Healing Polymers Based on Supramolecular Interactions: State of the Art and Future Directions

Dynamic covalent bond from first principles: Diarylbibenzofuranone structural, electronic, and oxidation studies

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