Zeolitic imidazolate framework-8 (ZIF-8) as a sacrificial template: one-pot synthesis of hollow poly(dopamine) nanocapsules and yolk-structured poly(dopamine) nanocomposites

Ran, Jingyu; Xiao, Ling; Wu, Weidang; Liu, Yike; Qiu, Wei; Wu, Jianming

doi:10.1088/1361-6528/28/5/055604

Cited by 28 publications

(14 citation statements)

References 35 publications

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“…TEM images further indicated that the PDA@ZIF-8 nanohybrids were gradually etched out during immersion in the aqueous within 48 h, resulting in hollow nanocapsules, and the PDA nanoshells could be formed on the ZIF-8 nanocrystals by simply dispersing them in the DA hydrochloride solution (Figure 2A–C). In our previous work, we have confirmed that the shell of the nanocapsules is indeed PDA [21]. The same coating procedure was used in the current work to fabricate PDA@ZIF-8 nanohybrids.…”

Section: Resultssupporting

confidence: 65%

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New Insight into Polydopamine@ZIF-8 Nanohybrids: A Zinc-Releasing Container for Potential Anticancer Activity

et al. 2018

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Despite the initial evidence on the role of zinc and zinc transporters in cancer prevention, little attention has been paid to the zinc-derived compounds. In the present work, we reported a strategy to prepare a kind of zinc-releasing container with enhanced biocompatibility and release dynamics using ZIF-8 nanocrystals as the sacrificial templates. Transmission electron microscopy (TEM) analysis demonstrated that the ZIF-8 nanocrystals were gradually etched out in the aqueous media within 48 h, resulting in hollow nanocapsules. Notably, we found the self-polymerization of dopamine can form nanoshells around the ZIF-8 nanocrystals, which served as a type of functional membranes during the release of zinc. More interestingly, PDA@ZIF-8-based nanohybrids expressed stronger inhibition to the cancer cell growth, which implied that the nanohybrids could be a drug carrier for chemotherapy. This study broadens the biomedical application of ZIF-8 and also provides a versatile strategy toward the development of multifunctional delivery system.

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Section: Resultssupporting

confidence: 65%

“…In our previous works, we obtained polydopamine (PDA) nanocapsules by utilizing ZIF-8 nanocrystals as the sacrificial template without any special etchant [21]. PDA is of increasing interest in various fields based on its fascinating properties.…”

Section: Introductionmentioning

confidence: 99%

New Insight into Polydopamine@ZIF-8 Nanohybrids: A Zinc-Releasing Container for Potential Anticancer Activity

et al. 2018

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“…According to Equations (1)–(3), the calculated surface energy and its components for grafted TATB are listed in Table 2. The surface energy increased from 49.49 mN·m −2 for TATB to 50.05 mN·m −2 for TP after PDA functionalization, which is attributable to the π–π stacks and hydrogen bonding during dopamine polymerization [29]. Comparing the grafted TATB samples, the surface energy decreased upon decreasing the polar and dispersion components.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Interfacial and Mechanical Properties of PBX Composites via Surface Modification on Energetic Crystals

Zeng¹,

Yang²,

Jian-hu³

et al. 2019

Polymers

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The mechanical properties of composites are highly dependent on the interfacial interaction. In the present work, inspired by marine mussel, the adhesion between energetic crystals of 1,3,5-triamino-2,4,6-trinitrobenzene (TATB) and polymer binders was improved. Three types of linear polymeric agents of glycidyl azide polymer (GAP), polyethylene glycol (PEG), and polytetramethylene ether glycol (PTMEG) were grafted onto TATB particles bridged through polydopamine (PDA) films. SEM images showed that 5% grafting contents could evidently form roughness shells on the surface. With a reinforcement at the interface produced by grafting shells, the mechanical properties of polymer-bonded explosives (PBXs) exhibited outstanding mechanical performance, especially for the PTMEG-grafting sample. Examined by the contact-angle test, the PTMEG-grafting sample possessed a value of polar component similar to that of fluoropolymer, leading to an excellent wettability of the two phases. Additionally, different contents of PTMEG were grafted to reveal that the mechanical properties could be improved even with content as little as 0.5 wt.% PTMEG. These results might highlight a correlation between interfacial interaction and macroscopic properties for mechanically energetic composites, while providing a versatile route of grafting on highly loaded composites.

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“…Metal-organic frameworks (MOFs)-based yolk-shell nanocomposites,c onsisting of MOFs cores and organic/ inorganic shells,a re one of the most typical yolk-shell nanostructures.Generally,the formation mechanism of above MOFs-based yolk-shell nanostructures mainly involves in ions exchange of ligands or the metal-ligands bonds break by direct wet-chemical etching. [11][12][13][14][15][16][17][18][19][20] Thef ormer mechanism is dominantly guided by the exchange of organic ligands in alcoholic solution and the metal ions were captured by inorganic anion and form thermodynamically stable inorganic shell via ap hase transformation. Fore xample,2 -methylimidazole ligand in zeolitic imidazolate frameworks (ZIFs) can be substituted by S 2À ,Se 2À ,V O 4 3À or PW 12 O 40 3À to form ZnS/ CoS, [12,13] CoSe, [14] or Co 3 V 2 O 8 .…”

Section: Introductionmentioning

confidence: 99%

Solvent‐Dependent Adsorption‐Driven Mechanism for MOFs‐Based Yolk–Shell Nanostructures

Wang

Pan

et al. 2021

Angew Chem Int Ed

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Metal‐organic frameworks (MOFs)‐based yolk–shell nanostructures have drawn enormous attention recently due to their multifunctionality. However, the regulations of the size and morphology of yolk–shell nanostructures are still limited by the unclear formation mechanism. Herein, we first demonstrated a solvent‐dependent adsorption‐driven mechanism for synthesizing yolk–shelled MOFs‐based nanostructures coated with mesoporous SiO2 shells (ZIF‐8@mSiO2) with tunable size and morphology. The selective and competitive adsorption of methanol (CH3OH) and water (H2O) on ZIF‐8 core were found to have decisive effects on inducing the morphology evolution of yolk–shell nanostructures. The obtained yolk–shelled ZIF‐8@mSiO2 nanostructures show great promise in generating acoustic cavitation effect for sonodynamic cancer therapy in vitro. We believe that this work will not only help us to design novel MOFs‐based yolk–shell nanostructures, but also promote the widespread application of MOFs materials.

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Zeolitic imidazolate framework-8 (ZIF-8) as a sacrificial template: one-pot synthesis of hollow poly(dopamine) nanocapsules and yolk-structured poly(dopamine) nanocomposites

Cited by 28 publications

References 35 publications

New Insight into Polydopamine@ZIF-8 Nanohybrids: A Zinc-Releasing Container for Potential Anticancer Activity

New Insight into Polydopamine@ZIF-8 Nanohybrids: A Zinc-Releasing Container for Potential Anticancer Activity

Enhanced Interfacial and Mechanical Properties of PBX Composites via Surface Modification on Energetic Crystals

Solvent‐Dependent Adsorption‐Driven Mechanism for MOFs‐Based Yolk–Shell Nanostructures

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