Stimuli-Responsive Macromolecular Self-Assembly

Jiang, Chunqiang; Gao, Xu; Gao, Jianping

doi:10.3390/su141811738

Cited by 6 publications

(7 citation statements)

References 136 publications

(160 reference statements)

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“…They have found widespread applications in biomedicine, including drug delivery, gene transfection, protein delivery, biomedical imaging and diagnosis, tissue engineering, and biomimetic chemistry [76]. Self-assembly gels generally come in two forms: micromolecules self-assembly and macromolecules self-assembly [77].…”

Section: Physical Crosslink Gelmentioning

confidence: 99%

“…The CO 2 -responsive macromolecular self-assembly unit structure can be linear polymer or nonlinear polymer, or biological macromolecule, making the self-assembled of macromolecule more intricate than the self-assembled of micromolecule [77]. These macromolecules are typically divided into two categories: one with uncharged alkaline units (such as amine groups), which are hydrophilic at low pH and protonate into hydrophobic segments at high pH; and the other is macromolecules with acidic units (such as carboxyl groups), protonating into positively charged segments at low pH and carrying a negative charge at high pH.…”

Section: Macromolecule Self-assemblymentioning

confidence: 99%

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A Research Progress of CO-Responsive Plugging Channeling Gels

Xiong,

Liu,

et al. 2024

ENERGY

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In the heterogeneous reservoirs, CO 2 flooding easily leads to CO 2 gas channeling, which can seriously affect sweeping efficiency and reduce oil recovery. After thoroughly investigating the advantages and shortcomings of various CO 2 plugging technologies, this paper focuses on the feasibility of improving conventional wateralternating gas (WAG) through CO 2 -responsive gel materials. Based on the different chemical reaction mechanisms between the unique chemical structure and CO 2 , changes in the material's physical and chemical properties can respond to CO 2 . The feasibility of utilizing these property changes for CO 2 -responsive plugging is explored. Various CO 2 -responsive gels and gel nanoparticles have been extensively researched in different fields, such as energy, medicine, and biology. This paper surveys the molecular structures, chemical compositions, response mechanisms, and changes of these CO 2 -responsive gels, aiming to draw insights into the carbon dioxide-enhanced oil recovery (CO 2 -EOR) field. Finally, the key issues and future development direction of CO 2 -responsive plugging gels were analyzed. KEYWORDSGas channeling; sweep efficiency; CO 2 -responsive gel; CO 2 -EOR

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Section: Physical Crosslink Gelmentioning

confidence: 99%

Section: Macromolecule Self-assemblymentioning

confidence: 99%

A Research Progress of CO-Responsive Plugging Channeling Gels

Xiong,

Liu,

et al. 2024

ENERGY

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“…One is to modify dye molecules and functional groups on polymer side chains through chemical grafting methods, while the other method involves self-assembly. 24 Supramolecular interactions, such as hydrogen bonding, 25 hydrophilic−hydrophobic interactions, 26 π−π stacking, 27 and electrostatic interactions, 28 are used to form stimulus-responsive aggregates 29 under external stimuli. This is demonstrated in supramolecular assemblies based on cyclodextrin host−guest complexation.…”

Section: ■ Introductionmentioning

confidence: 99%

Preparation of a Fluorescent Polymer Sensing System with an Oxidation-Electric Dual-Mode Response Based on the Supramolecular Host–Guest Interaction

Shen,

Lu,

Ren

et al. 2024

ACS Appl. Polym. Mater.

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Nowadays, stimuli-responsive macromolecular self-assembly systems have significant potential in biomedicine and molecular regulation. Their combination with fluorescent molecules is particularly important in the design of a sensing system. In this work, we designed a stimuli-responsive fluorescent sensing system (PF-b -PFMMA-b-PPEGMA@CD) based on the self-assembly of cyclodextrins (CD) with ferrocene (Fc), which consisted of a water-soluble conjugated polymer composed of a polyfluorene backbone with fluorescent properties, a segment providing the self-assembled guest groups, and a segment improving water solubility, together with the modified cyclodextrin. The sensing system exhibited good sensitivity to oxidizing substances and electrical stimulation. Under self-assembly, the fluorescence of the aggregates was quenched. Due to the inclusion of ferrocene, Fc became hydrophilic and is oxidized into charged Fc+, leading to disassembly and fluorescence recovery, which can be used to construct the fluorescent sensing system for detecting biomolecular substrates. Furthermore, based on its high sensitivity to oxidizing molecules and electrical stimulation, we evaluated its application potential as a drug delivery system and believe that this system has significance for advancing the development of fluorescent polymers in the field of medicine.

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“…Self-assembly processes are ubiquitous in nature. Involved in the crystal formation, cell growth, and the synthesis of nanomaterials [ 3 , 4 , 5 ]. It shows the great potential for application in biology, materials, medicine, and food.…”

Section: Introductionmentioning

confidence: 99%

Effect of Thermal Treatment on the Self-Assembly of Wheat Gluten Polypeptide

et al. 2023

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Self-assembled fibrillation of wheat gluten is a common phenomenon in the daily production and processing of wheat flour products. The driving forces for its formation and the factors that influence the morphology of fibrils have not been thoroughly investigated. In this study, the effect of three bonding changes (breaking hydrogen bonds, strengthening hydrophobic interactions, and SH-SS exchange reactions) on gluten polypeptide (GP) fibrillation was simulated by adjusting the heating temperature (room temperature (RT), 45 °C, 65 °C, and 95 °C). The results showed that the breakage of hydrogen bonds could induce conformational transitions in GPs and help to excite fibrillation in GPs. Strengthened hydrophobic interactions significantly contributed to the fibrillation of GPs. Covalent crosslinks generated by SH-SS exchange reactions might also promote the fibrillation of GPs. GPs with different degrees of hydrolysis (4.0%, 6.0%, and 10.0%, represented by DH 4, DH 6, and DH 10, respectively) presented different extents of fibrillation, with DH 10 GPs having a higher propensity to fibrillation than DH 4 and DH 6 GPs. The results of Fourier’s transform infrared spectroscopy indicated that hydrophobic interactions drive the transition from a random coil and α-helix to a β-sheet. In addition, hydrophobic interactions also drive the intermolecular polymerization of GPs, resulting in larger molecular weight aggregates. The morphology presented by transmission electron microscopy showed that the greater the DH, the stronger the tendency for the worm-like aggregation of GPs.

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Stimuli-Responsive Macromolecular Self-Assembly

Cited by 6 publications

References 136 publications

A Research Progress of CO-Responsive Plugging Channeling Gels

A Research Progress of CO-Responsive Plugging Channeling Gels

Preparation of a Fluorescent Polymer Sensing System with an Oxidation-Electric Dual-Mode Response Based on the Supramolecular Host–Guest Interaction

Effect of Thermal Treatment on the Self-Assembly of Wheat Gluten Polypeptide

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