Preparation and Properties of Supramolecular Organogel Based on Iodine-Functionalized Pillar[5]arene

陈进发,; 刘茜,; 韩冰冰,; 丁金东,; 张有明,; 林奇,; 姚虹,; 魏太保,

doi:10.6023/cjoc201805003

Cited by 5 publications

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“…The alginate‐based hydrogels from natural polymers are generally heterogeneous with less tunability on the properties. Lately, synthetic polymers prepared by controllable polymerization techniques have been reported to yield high performance, physically associated hydrogels via electrostatic interactions with metal ions . Particularly, calcium ions (Ca 2+ ), considered to be biologically benign cations and ubiquitously present in living systems, are widely used for the design of biomaterials …”

Section: Background and Originality Contentmentioning

confidence: 99%

Stimuli‐Responsive Polypeptide‐Based Supramolecular Hydrogels Mediated by Ca²⁺ Ion Cross‐Linking

Meng

Sun

2019

Chin. J. Chem.

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Summary of main observation and conclusion Hydrogels cross‐linked with metal ions (e.g., Ca2+) represent a promising class of bioinspired materials for a wide range of biomedical applications. Herein, we report a facile approach to obtain cross‐linked stimuli‐responsive supramolecular polypeptide hydrogels. The hydrogel is prepared by statistical/block copoly(L‐glutamate)s based copolymers cross‐linked with calcium ions. The incorporation of both oligo(ethylene glycol) (OEG) and glutamic acid residues in the polymer offers thermal‐responsive property and cooperative binding sites with Ca2+ ions simultaneously. We present a systematic study of the influence of calcium ions on the gelation behaviors of these copolymers. It is observed that the addition of calcium ions induces the formation of hydrogels. Increasing the concentration of Ca2+ ions can significantly enhance the gelation ability of the samples as indicated by increased storage modulus and decreased sol‐to‐gel transition temperature (Tsol‐gel). We further demonstrate that the influence of monomer distribution on the gelation behavior is trivial, which is possibly due to similar morphology of the self‐assemblies. The obtained hydrogels exhibit thermal‐responsive gelation behavior mediated by ion cross‐linking, which enables them to be ideal smart hydrogel system for many applications.

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Section: Background and Originality Contentmentioning

confidence: 99%

Stimuli‐Responsive Polypeptide‐Based Supramolecular Hydrogels Mediated by Ca²⁺ Ion Cross‐Linking

Meng

Sun

2019

Chin. J. Chem.

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Supramolecular Vesicles Based on Water‐Soluble 2,6‐Helic[6]arene: High Affinity Binding, Stimuli Responsiveness and Delivery of Doxorubicin to Cancer Cells

et al. 2019

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of main observation and conclusion arene was used to construct supramolecular vesicles via host-guest interaction. Water-soluble 2,6-helic[6]arene was discovered to be high affinity host for suitable biomarkers. Supramolecular vesicles were responsive to multiple stimuli types, including temperature, pH, Ca 2+ , CO 2 bubbling and biomarker displacement. Supramolecular vesicles were used to load and deliver antitumor drug doxorubicin to HeLa cells in vitro.www.cjc.wiley-vch.de

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Decoration of Terpyridine with Electron‐Rich Unit THDTAP: an Efficient Way to Explore Fluorescence Sensors for Recognizing Metal Ions

Bai

et al. 2019

Chin. J. Chem.

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Summary of main observation and conclusion The electron‐donating unit 2,3,4,6‐tetrahydro‐1,6‐dithia‐3a‐azaphenalene (THDTAP) was introduced onto terpyridine (TPy) to give a donor‐acceptor (D‐A) type TPy‐ligand (compound 2). Upon selective oxidation of two sulfur atoms on the THDTAP moiety of 2, the ligands 3—6 were created. The electronic structures of 2—6 were evaluated by theoretical, electrochemical, and spectroscopic investigations. The oxidation on the sulfur atoms brings significant influence on the electron‐donating ability of THDTAP moiety, subsequently, leads to fine modulations on intramolecular charge‐transfer (ICT) of 2—6 and the electronically excited states of the complexes of 2—6 with metal ions. Based on the optical response of 2—6 toward metal ions, the step‐by‐step recognition of Zn2+, Cd2+, and Ag+ ions is set up by employing 2 and 3 as combined fluorescence sensors.

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Preparation and Properties of Supramolecular Organogel Based on Iodine-Functionalized Pillar[5]arene

Cited by 5 publications

References 0 publications

Stimuli‐Responsive Polypeptide‐Based Supramolecular Hydrogels Mediated by Ca²⁺ Ion Cross‐Linking

Stimuli‐Responsive Polypeptide‐Based Supramolecular Hydrogels Mediated by Ca²⁺ Ion Cross‐Linking

Supramolecular Vesicles Based on Water‐Soluble 2,6‐Helic[6]arene: High Affinity Binding, Stimuli Responsiveness and Delivery of Doxorubicin to Cancer Cells

Decoration of Terpyridine with Electron‐Rich Unit THDTAP: an Efficient Way to Explore Fluorescence Sensors for Recognizing Metal Ions

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Preparation and Properties of Supramolecular Organogel Based on Iodine-Functionalized Pillar[5]arene

Cited by 5 publications

References 0 publications

Stimuli‐Responsive Polypeptide‐Based Supramolecular Hydrogels Mediated by Ca2+ Ion Cross‐Linking

Stimuli‐Responsive Polypeptide‐Based Supramolecular Hydrogels Mediated by Ca2+ Ion Cross‐Linking

Supramolecular Vesicles Based on Water‐Soluble 2,6‐Helic[6]arene: High Affinity Binding, Stimuli Responsiveness and Delivery of Doxorubicin to Cancer Cells

Decoration of Terpyridine with Electron‐Rich Unit THDTAP: an Efficient Way to Explore Fluorescence Sensors for Recognizing Metal Ions

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Product

Resources

About

Stimuli‐Responsive Polypeptide‐Based Supramolecular Hydrogels Mediated by Ca²⁺ Ion Cross‐Linking

Stimuli‐Responsive Polypeptide‐Based Supramolecular Hydrogels Mediated by Ca²⁺ Ion Cross‐Linking