Pillar[5]arene‐Based Supramolecular Organic Framework with Multi‐Guest Detection and Recyclable Separation Properties

Lin, Qi; Fan, Yan–Qing; Mao, Peng-Peng; Lu, Lan; Liu, Juan; Zhang, Youming; Yao, Hong; Wei, Tai‐Bao

doi:10.1002/chem.201705107

Cited by 143 publications

(36 citation statements)

References 45 publications

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“…And incremental downfield shifts were observed when 2.0 equiv. PCDA was added, confirming the very existence of strong non‐covalent interactions between the host and guest building block molecules 22,23 . Next the FT‐IR spectra were recorded on the xerogel form by lyophilisation to specify these non‐covalent interactions (Figure 3).…”

Section: Resultsmentioning

confidence: 86%

Polydiacetylene (PDA) based supramolecular gel upon coassembly with a bolaamphiphilic cogelator

Liu

Ding

et al. 2020

Polymers for Advanced Techs

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Supramolecular gel systems provide an ideal platform for the study of conjugated polydiacetylene (PDA) in soft materials. Compared with the well studied amphiphiles, the bolaamphiphilic molecules received much less attention in the fabrication of supramolecular gels. It's a big challenge to develop bolaamphiphilic type cogelators with reasonable molecular structures for the preparation of PDA supramolecular gels. Herein, a novel bolaamphiphilic cogelator containing an imidazole group at both ends was designed and coassembled with commercially available diacetylene acid monomer at 1:2 molar ratio by multiple non‐covalent interactions. A white supramolecular gel was successfully prepared through the conventional heating‐cooling method and systematically characterized by 1H‐NMR, FT‐IR, XRD, SEM and rheology test. After UV irradiation, blue PDA was polymerized in the supramolecular gel system, as verified by UV‐Vis absorption and Raman spectroscopy. When heated to 55°C and 75°C, a successive blue‐to‐purple‐to‐red colorimetric transition was observed for the PDA supramolecular gel. Interestingly, after cooled to room temperature, the purple PDA could return to the original blue phase reversibly, while the red PDA remained in the red phase with an obvious fluorescence enhancement effect. This work would promote the investigation of bolaamphiphilic molecules as well as conjugated PDA in soft materials.

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Section: Resultsmentioning

confidence: 86%

Polydiacetylene (PDA) based supramolecular gel upon coassembly with a bolaamphiphilic cogelator

Liu

Ding

et al. 2020

Polymers for Advanced Techs

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“…In recent years, more and more effort has been put into some sensors for sequential detection of ions . In particular, some metal complexes showed selectivity toward targeted anions in systems, such as Fe–HSO 4, Fe–F and Hg–I . Therefore, we also examined the selectivity of PHP–Cu complex towards various anions.…”

Section: Resultsmentioning

confidence: 99%

A novel purine derivative‐based colorimetric chemosensor for sequential detection of copper ion and sulfide anion

Jin

Chen

Zhang

et al. 2018

Applied Organom Chemis

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A purine derivative-based colorimetric chemosensor (PHP) for the detection of Cu 2+ and S 2− is reported. PHP demonstrated a high selectivity and sensitivity for Cu 2+ through color change from colorless to yellow with a detection limit of 74.9 nM. The sensing mechanism of the PHP-Cu complex was confirmed using X-ray crystal structure analysis and density functional theory calculation. Furthermore, the PHP-Cu complex can be used for selective detection of S 2− via competitive complexation of S 2− to Cu 2+ . Finally, PHP was successfully applied as a visible test strip for the detection of cupric ions in water.

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“…The few reports on recyclable supramolecular materials have mainly focused on functions such as conductivity, size selectivity, sensing, and separation properties. [ 29–33 ]…”

Section: Figurementioning

confidence: 99%

Extremely Rapid Self‐Healable and Recyclable Supramolecular Materials through Planetary Ball Milling and Host–Guest Interactions

et al. 2020

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The host–guest interaction as noncovalent bonds can make polymeric materials tough and flexible based on the reversibility property, which is a promising approach to extend the lifetime of polymeric materials. Supramolecular materials with cyclodextrin and adamantane are prepared by mixing host polymers and guest polymers by planetary ball milling. The toughness of the supramolecular materials prepared by ball milling is approximately 2 to 5 times higher than that of supramolecular materials prepared by casting, which is the conventional method. The materials maintain their mechanical properties during repeated ball milling treatments. They are also applicable as self‐healable bulk materials and coatings, and they retain the transparency of the substrate. Moreover, fractured pieces of the materials can be re‐adhered within 10 min. Dynamic mechanical analysis, thermal property measurements, small‐angle X‐ray scattering, and microscopy observations reveal these behaviors in detail. Scars formed on the coating disappear within a few seconds at 60 °C. At the same time, the coating shows scratch resistance due to its good mechanical properties. The ball milling method mixes the host polymer and guest polymer at the nano level to achieve the self‐healing and recycling properties.

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Pillar[5]arene‐Based Supramolecular Organic Framework with Multi‐Guest Detection and Recyclable Separation Properties

Cited by 143 publications

References 45 publications

Polydiacetylene (PDA) based supramolecular gel upon coassembly with a bolaamphiphilic cogelator

Polydiacetylene (PDA) based supramolecular gel upon coassembly with a bolaamphiphilic cogelator

A novel purine derivative‐based colorimetric chemosensor for sequential detection of copper ion and sulfide anion

Extremely Rapid Self‐Healable and Recyclable Supramolecular Materials through Planetary Ball Milling and Host–Guest Interactions

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