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Kuppadakkath G, Jayabhavan SS, Damodaran KK. Supramolecular Gels Based on C3-Symmetric Amides: Application in Anion-Sensing and Removal of Dyes from Water. Molecules 2024; 29:2149. [PMID: 38731640 PMCID: PMC11085098 DOI: 10.3390/molecules29092149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 04/26/2024] [Accepted: 05/03/2024] [Indexed: 05/13/2024] Open
Abstract
We modified C3-symmetric benzene-1,3,5-tris-amide (BTA) by introducing flexible linkers in order to generate an N-centered BTA (N-BTA) molecule. The N-BTA compound formed gels in alcohols and aqueous mixtures of high-polar solvents. Rheological studies showed that the DMSO/water (1:1, v/v) gels were mechanically stronger compared to other gels, and a similar trend was observed for thermal stability. Powder X-ray analysis of the xerogel obtained from various aqueous gels revealed that the packing modes of the gelators in these systems were similar. The stimuli-responsive properties of the N-BTA towards sodium/potassium salts indicated that the gel network collapsed in the presence of more nucleophilic anions such as cyanide, fluoride, and chloride salts at the MGC, but the gel network was intact when in contact with nitrate, sulphate, acetate, bromide, and iodide salts, indicating the anion-responsive properties of N-BTA gels. Anion-induced gel formation was observed for less nucleophilic anions below the MGC of N-BTA. The ability of N-BTA gels to act as an adsorbent for hazardous anionic and cationic dyes in water was evaluated. The results indicated that the ethanolic gels of N-BTA successfully absorbed methylene blue and methyl orange dyes from water. This work demonstrates the potential of the N-BTA gelator to act as a stimuli-responsive material and a promising candidate for water purification.
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Affiliation(s)
| | | | - Krishna K. Damodaran
- Department of Chemistry, Science Institute, University of Iceland, Dunhagi 3, 107 Reykjavík, Iceland
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Chen B, Zhou X, Wang X, Zhao S, Jing Z, Jin Y, Pi X, Du Q, Chen L, Li Y. High-efficient removal of anionic dye from aqueous solution using metal-organic frameworks@chitosan aerogel rich in benzene structure. Int J Biol Macromol 2024; 256:128433. [PMID: 38008141 DOI: 10.1016/j.ijbiomac.2023.128433] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/17/2023] [Accepted: 11/23/2023] [Indexed: 11/28/2023]
Abstract
With the exponentially increase of dye pollutants, the purification of dye wastewater has been an urgent ecological problem. As a novel type of porous adsorbent, metal-organic frameworks still face challenges in recyclability, agglomeration, and environmentally unfriendly synthesis. Herein, MOF-525 was in-situ growth onto the surface of the chitosan (CS) beads to fabricate MOF-525@CS aerogel. CS was utilized as substrate to uniformly disperse MOF-525, thereby significantly mitigating agglomeration and improving recyclability of MOF-525. The characterization results shown that MOF-525@CS aerogel had a high specific surface area of 103.0 m2·g-1, and MOF-525 was uniformly distributed in the 3D porous structure of CS, and the presence of benzoic acid was detected. The MOF-525@CS aerogel had a remarkable adsorption capacity of 1947 mg·g-1 for Congo red, which is greater than the sum of its parts. MOF-525@CS aerogel also inherited the rapid adsorption ability of MOF-525, removing 80 % of Congo red within 600 min. Such excellent adsorption performance can be attributed to the benzoic acid trapped by CS via CN band to enhance the π-π stacking interactions. Additionally, the utilization of benzoic acid makes the synthesis process of MOF-525@CS aerogel more environmentally friendly. The high-efficient MOF-525@CS aerogel is a competitive candidate for dye pollution adsorption.
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Affiliation(s)
- Bing Chen
- College of Mechanical and Electrical Engineering, Qingdao University, 308 Ningxia Rd, Qingdao 266071, PR China
| | - Xiaoshuang Zhou
- State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Collaborative Innovation Center for Marine Biomass Fibers, Materials and Textiles of Shandong Province, Institute of Marine Biobased Materials, Qingdao University, 308 Ningxia Rd, Qingdao 266071, PR China
| | - Xinxin Wang
- College of Mechanical and Electrical Engineering, Qingdao University, 308 Ningxia Rd, Qingdao 266071, PR China
| | - Shiyong Zhao
- College of Mechanical and Electrical Engineering, Qingdao University, 308 Ningxia Rd, Qingdao 266071, PR China
| | - Zhenyu Jing
- College of Mechanical and Electrical Engineering, Qingdao University, 308 Ningxia Rd, Qingdao 266071, PR China
| | - Yonghui Jin
- College of Mechanical and Electrical Engineering, Qingdao University, 308 Ningxia Rd, Qingdao 266071, PR China
| | - Xinxin Pi
- College of Mechanical and Electrical Engineering, Qingdao University, 308 Ningxia Rd, Qingdao 266071, PR China
| | - Qiuju Du
- State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Collaborative Innovation Center for Marine Biomass Fibers, Materials and Textiles of Shandong Province, Institute of Marine Biobased Materials, Qingdao University, 308 Ningxia Rd, Qingdao 266071, PR China
| | - Long Chen
- State Key Laboratory of Bio-Fibers and Eco-Textiles, College of Materials Science and Engineering, Collaborative Innovation Center for Marine Biomass Fibers, Materials and Textiles of Shandong Province, Institute of Marine Biobased Materials, Qingdao University, 308 Ningxia Rd, Qingdao 266071, PR China.
| | - Yanhui Li
- College of Mechanical and Electrical Engineering, Qingdao University, 308 Ningxia Rd, Qingdao 266071, PR China.
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Wang X, Wang Y, Wang J, Li Z, Zhang J, Li J. In silico Design of Photoresponsive Peptide-based Hydrogel with Controllable Structural and Rheological Properties. Colloids Surf A Physicochem Eng Asp 2023. [DOI: 10.1016/j.colsurfa.2023.131020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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Rabecca Jenifer V, Mohan Das T. Smart supramolecular photoresponsive gelator with long-alkyl chain azobenzene incorporated sugar derivatives for recycling aromatic solvents and sequestration of cationic dyes. SOFT MATTER 2022; 18:9017-9025. [PMID: 36404737 DOI: 10.1039/d2sm01367c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Phase-selective gelation of low molecular-weight photoresponsive organogelator possessing long aliphatic chain azobenzene sugar derivatives and its applications in the recycling of aromatic solvents and also the removal of cationic dyes is reported. Very low critical gelation concentration (CGC) in aromatic solvents implies that it acts as a very good gelator. The photoinduced gel-to-sol transition was attained by irradiation with UV light at 350 nm. These organogels work as a selective adsorbent for efficiently removing cationic dyes from individual aqueous dye solutions and in a mixture of cationic and anionic dye solutions show more than 95% removal within 12 h. These insights indicate that these sugar derivatives could be exploited in implementing smart materials for environmental remediation.
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Affiliation(s)
- V Rabecca Jenifer
- Department of Chemistry, School of Basic and Applied Sciences, Central University of Tamil Nadu (CUTN), Thiruvarur 610 005, India.
| | - Thangamuthu Mohan Das
- Department of Chemistry, School of Basic and Applied Sciences, Central University of Tamil Nadu (CUTN), Thiruvarur 610 005, India.
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Chen B, Li Q, Li Y, Du Q, Cui M, Xu W, Zhou X, Zhang X. Efficient Adsorption of Methylene Blue in Aqueous Solution by Acid‐modified Sodium Alginate. ChemistrySelect 2022. [DOI: 10.1002/slct.202202975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Bing Chen
- College of Mechanical and Electrical Engineering Qingdao University 308 Ningxia Road Qingdao 266071 China
| | - Qi Li
- College of Mechanical and Electrical Engineering Qingdao University 308 Ningxia Road Qingdao 266071 China
| | - Yanhui Li
- College of Mechanical and Electrical Engineering Qingdao University 308 Ningxia Road Qingdao 266071 China
- State Key Laboratory of Bio-fibers and Eco-textiles Qingdao University Qingdao 266071 China
| | - Qiuju Du
- State Key Laboratory of Bio-fibers and Eco-textiles Qingdao University Qingdao 266071 China
| | - Mingfei Cui
- College of Mechanical and Electrical Engineering Qingdao University 308 Ningxia Road Qingdao 266071 China
| | - Wenshuo Xu
- College of Mechanical and Electrical Engineering Qingdao University 308 Ningxia Road Qingdao 266071 China
| | - Xiaoshuang Zhou
- State Key Laboratory of Bio-fibers and Eco-textiles Qingdao University Qingdao 266071 China
| | - Xiangyu Zhang
- College of Mechanical and Electrical Engineering Qingdao University 308 Ningxia Road Qingdao 266071 China
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Pramanik B, Ahmed S. Peptide-Based Low Molecular Weight Photosensitive Supramolecular Gelators. Gels 2022; 8:gels8090533. [PMID: 36135245 PMCID: PMC9498526 DOI: 10.3390/gels8090533] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Revised: 08/22/2022] [Accepted: 08/23/2022] [Indexed: 11/20/2022] Open
Abstract
Over the last couple of decades, stimuli-responsive supramolecular gels comprising synthetic short peptides as building blocks have been explored for various biological and material applications. Though a wide range of stimuli has been tested depending on the structure of the peptides, light as a stimulus has attracted extensive attention due to its non-invasive, non-contaminant, and remotely controllable nature, precise spatial and temporal resolution, and wavelength tunability. The integration of molecular photo-switch and low-molecular-weight synthetic peptides may thus provide access to supramolecular self-assembled systems, notably supramolecular gels, which may be used to create dynamic, light-responsive “smart” materials with a variety of structures and functions. This short review summarizes the recent advancement in the area of light-sensitive peptide gelation. At first, a glimpse of commonly used molecular photo-switches is given, followed by a detailed description of their incorporation into peptide sequences to design light-responsive peptide gels and the mechanism of their action. Finally, the challenges and future perspectives for developing next-generation photo-responsive gels and materials are outlined.
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Affiliation(s)
- Bapan Pramanik
- Department of Chemistry, Ben-Gurion University of the Negev, Be’er Sheva 84105, Israel
- Correspondence: (B.P.); (S.A.)
| | - Sahnawaz Ahmed
- Department of Medicinal Chemistry, National Institute of Pharmaceutical Education and Research Kolkata, Kolkata 700054, India
- Correspondence: (B.P.); (S.A.)
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Rajasekar M, Lavanya M. Gel scaffolds and emerging applications in biomedicine. RSC Adv 2022; 12:15925-15949. [PMID: 35733685 PMCID: PMC9134220 DOI: 10.1039/d2ra00924b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 05/11/2022] [Indexed: 12/30/2022] Open
Abstract
Nowadays, gels are formed by small molecules self-assembling under the influence of various non-covalent interactions. They can be easily perturbed, which allows for the careful tweaking of their properties. They are kinetically confined, and following production, they usually do not demonstrate time-variable changes in material properties. When exposed to external stimuli such as temperature, pH, light, enzymes, redox, and chemical analytes, such materials may become switchable, leading to the reconfiguration of the gel matrix into a different type of network. The transformations allow gel-to-gel transitions, while the changes in the molecular aggregation result in the alteration of the physical and chemical properties of the gel with time. Here, we discuss various methods used to achieve gel-to-gel transitions by modifying a pre-formed gel material through external perturbation. The dynamic modification of gels allows the construction of an array of gels with various properties from a single material, which eventually extends the limit of application of the gels.
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Affiliation(s)
- Mani Rajasekar
- Centre for Molecular and Nanomedical Sciences, International Research Centre, Sathyabama Institute of Science and Technology (Deemed to be University) Chennai - 600 119 Tamilnadu India +91-44-24503814 +91-9710230530
| | - Manivannan Lavanya
- Centre for Molecular and Nanomedical Sciences, International Research Centre, Sathyabama Institute of Science and Technology (Deemed to be University) Chennai - 600 119 Tamilnadu India +91-44-24503814 +91-9710230530
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