Photoinduced reinforcement of supramolecular gels based on a coumarin-containing gelator

Yabuuchi, Kazuhiro; Matsuo, Nanako; Maéda, Hiroshi; Moriyama, Masaya

doi:10.1038/s41428-018-0090-2

Cited by 4 publications

(2 citation statements)

References 20 publications

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“…In order to realize the self-assembled chiral core, the chiral cyclohexanediamine was chosen as the bridging chain due to its effective hydrogen-bonding action for chiral helical selfassembly. [45][46][47] In order to optimize the influence of peripheral alkyl chains on orderly liquid crystalline self-assembly, three alkyl chains of -C 5 H 11 , -C 8 H 17 and -C 12 H 25 were introduced onto classic AIE cyanostilbene units. The synthetic route is shown in Scheme 2.…”

Section: Synthesis and Characterizationmentioning

confidence: 99%

A chiral column core surrounded by peripheral emitting moieties: a novel strategy for constructing columnar liquid crystals with circularly polarized luminescence

et al. 2022

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Section: Synthesis and Characterizationmentioning

confidence: 99%

A chiral column core surrounded by peripheral emitting moieties: a novel strategy for constructing columnar liquid crystals with circularly polarized luminescence

et al. 2022

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“…Significant efforts comprising different chemical, 14 physical 15 and enzymatic 16 cross-linking approaches have been devoted to tuning the mechanical properties of supramolecular gels. The most common methods are the addition of metal ions, 17 photoinduced cross-linking, 18 incorporation of charge transfer interactions, 19 inorganic composites, 20 and biomacromolecules 21 to strengthen the gels. These methods permit an improvement of the mechanical stability of the gel; nevertheless, remarkable structural alteration of the network component is involved.…”

Section: ■ Introductionmentioning

confidence: 99%

Dual Role of Boronic Acid Modification in Enhancing Rheological and Photophysical Properties of Supramolecular Gels

Saha,

Ruiu,

Zacharias

et al. 2024

Macromolecules

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Supramolecular gels derived from functionalized gelators offer diverse applications, and modifying the properties of existing organogels using guest molecules presents an attractive approach for designing functional gel materials with targeted properties. In this study, we investigated a method to enhance the mechanical and photophysical properties of readily prepared low molecular weight gels (LMWGs) through the incorporation of boronic acid derivatives. The leveraging of dynamic covalent bonding interactions between the hydroxyl groups of oxotriphenylhexanoates (OTHO) gelator and the boronic acid derivatives gave rise to a boronate adduct along with enhanced intermolecular aromatic stacking interactions between gelators and thereby reinforced the rheological and thermal stability of the doped OTHO gels. In an effort to probe the aforementioned aromatic interactions, we used a pyrene boronic acid dopant, which revealed that the spatial proximity between the aromatic groups of the boronic acid was close enough to display excimer formation. Our findings provide valuable insights into the regulation of mechanical strength, self-healing ability, and photophysical properties of supramolecular gels. Furthermore, this approach holds promise for broad applications in hydroxyl-containing LMWGs, enabling the development of functional gel materials with enhanced properties.

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Enhancing the healing ability and charge transport thermal stability of a diketopyrrolopyrrole based conjugated polymer by incorporating coumarin groups in the side chains

Gao

et al. 2021

Journal of Polymer Science

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In this paper, we present a new design strategy for healable polymeric semiconductors, which are demanding for the future flexible electronics, by incorporating coumarin groups in the polymer side chains. The selection of coumarin groups is based on the fact that photo-dimerization can occur to coumarins upon UV light irradiation, thus side chains of conjugated polymers with coumarins can be cross-linked. The photo-crosslinking of side chains has negligible effect on the thin film morphology and interchain packing order for the DPP-based conjugated polymer PDPP4T-DCM with coumarins in the side chains. However, the photo-crosslinking can facilitate the repair of the mechanically damaged thin film of PDPP4T-DCM and the recovery of the semiconducting properties. Additionally, the photo-crosslinking due to the coumarins in the side chains can lock thin film morphology and thus improve the thermal stability of charge transport.

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Photoinduced reinforcement of supramolecular gels based on a coumarin-containing gelator

Cited by 4 publications

References 20 publications

A chiral column core surrounded by peripheral emitting moieties: a novel strategy for constructing columnar liquid crystals with circularly polarized luminescence

A chiral column core surrounded by peripheral emitting moieties: a novel strategy for constructing columnar liquid crystals with circularly polarized luminescence

Dual Role of Boronic Acid Modification in Enhancing Rheological and Photophysical Properties of Supramolecular Gels

Enhancing the healing ability and charge transport thermal stability of a diketopyrrolopyrrole based conjugated polymer by incorporating coumarin groups in the side chains

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