Low Molecular Weight Hydrogel for Super Efficient Separation of Small Organic Molecules Based on Size Effect

Jian, Chuanjiang; Ning, Tao; Xu, Long; Liu, Miaochang; Huang, Xiaobo; Gao, Wenxia; Wu, Huayue

doi:10.1021/acssuschemeng.9b02487

Cited by 9 publications

(9 citation statements)

References 33 publications

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“…Dipeptide : Storage modulus is generally higher than loss modulus and the viscosity remains constant with temperature upto 50 °C and then drops [165] . Oligopeptide : The storage modulus is greater than the loss modulus and the complex viscosity decreases with increasing oscillation frequency [166] …”

Section: Other Strategies For Improving Mechanical Strength and Funct...mentioning

confidence: 99%

“…Conductivity on glass surfaces [109] . Applications related to photoresponsive behaviour such as photoresponsive drug delivery [166] . Used as bacterial culture medium, [113] template for nanoparticle synthesis [114] and targeted protein delivery [115] …”

Section: Other Strategies For Improving Mechanical Strength and Funct...mentioning

confidence: 99%

“…[165] Oligopeptide: The storage modulus is greater than the loss modulus and the complex viscosity decreases with increasing oscillation frequency. [166] Conductivity on glass surfaces. [109] Applications related to photoresponsive behaviour such as photoresponsive drug delivery.…”

Section: Lmwh Systemsmentioning

confidence: 99%

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Modified Low Molecular Weight Pure and Engineered Gels: A Review of Strategies towards Their Development

Khan

Das

2022

ChemistrySelect

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Low Molecular Weight (LMW) amphiphiles are promising class of chemicals that often enable gelation through formation of supramolecular self-assemblies driven by physical forces such as hydrophobic, hydrogen bonding and π-π interactions. These gels are of prime importance for wide range of biomedical applications like 3D-cell culture, enzyme immobilization, drug delivery, self-healing bandages etc. due to their ease of fabrication, biocompatibility, biodegradability, ease of modification and reversibility. However, low mechanical strength limit the applications of these physical gels. Herein, various strategies that have been adopted over the past two decades to advance the properties of different LMW gels are summarized. Structural modification in urea, saccharides, amino acids, peptides, bile acids and nucleobases induce functionalities in the corresponding gels that demonstrate applications such as injectable drug delivery vehicles, stimuli responsive delivery agent, pollutant adsorbents, catalysts, antimicrobial activity to name a few. The review also emphasizes on the developments in the field of engineered gels such as core-shell, double network and nanocomposite gel scaffolds that emphasizes on a facile modification of LMW gels to yield soft materials with higher toughness and tensile strength to be utilized for biomedical applications. The review also points toward the arenas which lack sufficient investigation and wherein the scope for further development remains.

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Section: Other Strategies For Improving Mechanical Strength and Funct...mentioning

confidence: 99%

Section: Other Strategies For Improving Mechanical Strength and Funct...mentioning

confidence: 99%

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Modified Low Molecular Weight Pure and Engineered Gels: A Review of Strategies towards Their Development

Khan

Das

2022

ChemistrySelect

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“…Exxon put forward a strategy to congeal the oil in the container with OGAs to prevent its release into the water for those dangerous ships that are imminent to sink or break (Dahl et al 1996). In the following decades, OGAs have been extensively studied and derived into different types, including low-molecular-weight organogelators (LMWGs) (Jian et al 2019;Kataoka et al 2015;McNeice et al 2017), phase-selective organogelators (PSOGs) (Zhang et al 2020), and polymeric gelators (PGs) (Nam et al 2016;Yan et al 2012). However, the practical application of some OGAs was limited by some defects, such as heating, carrier solvent, difficult degradation, large dosage, secondary pollution, etc.…”

Section: Introductionmentioning

confidence: 99%

Aluminum soap nanoparticles-lignin powder form phase-selective gelator: synergistic adsorption and gelation for rapid oil spill recovery

Cui

Líu

et al. 2023

Preprint

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Rapid and effective recovery of the oil spill is extremely challenging during oil spill remediation. To meet this challenge, an organogelator-polymerized porous matrix composed of adsorbents and organogelators provided a new strategy. This work investigated the gelling mechanism of aluminum 12-hydroxystearate (Al HSA) to form spherical nano micelles in solvents via UV-vis, FT-IR, and XRD. We creatively proposed a method for saponification of 12-hydroxystearic acid (HSA) on lignin via epichlorohydrin (ECH) crosslinking to produce aluminum soap-lignin gelator (OTS-AL/Al HSA). By adjusting the ECH content, Al HSA nanoparticles (15-40 nm) were grown on lignin, which improved the roughness endowing lignin with better hydrophobicity (WCA 134.6°) before octadecyltrichlorosilane (OTS) modification. Oils and organic solvents could be rapidly adsorbed by OTS-AL/Al HSA gelator at low temperatures due to the abundant pore structures. Rheological studies demonstrated its gelation characteristics, which were attributed to the rapid absorption of oils by lignin and the self-assembly of Al HSA nano micelles on lignin to form an aggregated network structure trapping oils, thus realizing the synergistic effect of oil adsorption-gelation. Recyclable materials, easy preparation process, and excellent oil treatment capacity make this new biomaterial may inspire more research in oil spill remediation in the future.

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“…We know that the molecules' self-aggregating process can be easily monitored by the UV spectrum and scanning electron microscopy (SEM) images from the concentration and morphology aspect. 44 First, we screened the TPAs-3(NC− Ph−OH) concentration-dependent UV spectrum, as shown in Figure 6, at low concentrations from 1.0 × 10 −6 to 1.1 × 10 −5 M. The absorption band is gradually narrowed into a strong peak. However, at a higher concentration at 1.2 × 10 −5 M, two peaks emerged, that is, the self-aggregating process started.…”

mentioning

confidence: 99%

Supramolecular Polymerizations via AIE-Active Monomers: Synthesis, Self-Assembly Mechanism Study, and Explosive Detection

Yin

Zhang

Yang

et al. 2020

Ind. Eng. Chem. Res.

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The small molecule-based supramolecular gels are a novel type of soft material and have attracted extensive research attention in the past decades, wherein the most challenging work is to look for a small molecule used as a monomer to construct uniform assemblies via multiple intermolecular interactions. Obviously, if the monomer is of a rigid or an aromatic framework and also has the ability to form supramolecular gels, the resulting polymers will have the potential to be used as optical materials, such as sensors. In this paper, TPAs-3(NC−Ph−OH) is synthesized, which is very seldomly seen being used as a monomer in supramolecular systems and is a Schiff base framework synthesized from o-hydroxybenzaldehyde and aromatic amines. Additionally, TPAs-3(NC−Ph−OH) is a typical aggregationinduced emission (AIE) luminogen (AIEgen). This property endows the corresponding supramolecular polymers with more interesting optical behaviors, such as different fluorescence performances in the different states (gel and sol) and under the external stimulus (with or without external pressures). Then, we postulate the TPAs-3(NC−Ph−OH) self-assembly mechanism from different points, including single-crystal diffraction analysis, matrix-assisted laser desorption ionization time-of-flight (MALDI-TOF) mass spectrometry, infrared (IR) spectroscopy, UV spectrum, and scanning electron microscopy (SEM) analysis. Finally, TPAs-3(NC−Ph−OH) is employed as a fluorescence sensor for the detection of explosive compound picric acid (PA), which demonstrates excellent sensitivity and selectivity for PA analysis qualitatively and quantitatively. Especially, a new way of fingerprint analysis is accomplished by TPAs-3(NC−Ph−OH) and the PA system due to the perfect on−off sensing performance.

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Low Molecular Weight Hydrogel for Super Efficient Separation of Small Organic Molecules Based on Size Effect

Cited by 9 publications

References 33 publications

Modified Low Molecular Weight Pure and Engineered Gels: A Review of Strategies towards Their Development

Modified Low Molecular Weight Pure and Engineered Gels: A Review of Strategies towards Their Development

Aluminum soap nanoparticles-lignin powder form phase-selective gelator: synergistic adsorption and gelation for rapid oil spill recovery

Supramolecular Polymerizations via AIE-Active Monomers: Synthesis, Self-Assembly Mechanism Study, and Explosive Detection

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