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Hu L, Gao Y, Cai Q, Wei Y, Zhu J, Wu W, Yang Y. Cholesterol-substituted spiropyran: Photochromism, thermochromism, mechanochromism and its application in time-resolved information encryption. J Colloid Interface Sci 2024; 665:545-553. [PMID: 38547635 DOI: 10.1016/j.jcis.2024.03.129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 03/10/2024] [Accepted: 03/20/2024] [Indexed: 04/17/2024]
Abstract
Organic multi-stimulus-responsive materials are widely used in anti-counterfeiting and information encryption due to their unique response characteristics and designability. However, progress in obtaining multi-stimulus-responsive smart materials has been very slow. Herein, a spiropyran derivative is constructed, which shows photochromic, thermochromic and mechanical photochromic properties, and has reversible absorption/luminescence adjustment ability. By introducing non-covalent interactions such as van der Waals force and hydrogen bond, this new molecule is more sensitive to external stimuli and exhibits better photochromic, mechanochromic and thermochromic properties with rapid speed and high contrast. Furthermore, these three stimulus responses can be completely restored to the initial state under white light irradiation. The reversible multiple response characteristics of this molecule make it possible to provide dynamic anti-counterfeiting and advanced information encryption capabilities. To demonstrate its application in advanced information encryption, powders treated with different stimuli are combined with fluorescent dyes to encrypt complex digital information. This work puts forward a new time-resolved encryption strategy, which provides important guidance for the development of time-resolved information security materials.
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Affiliation(s)
- Leilei Hu
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yangyang Gao
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Qihong Cai
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Youhao Wei
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Jiangkun Zhu
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Wei Wu
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China
| | - Yuhui Yang
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Hangzhou 310018, China; Department of Polymer Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China; Institute of Smart Biomedical Materials, Zhejiang Sci-Tech University, Hangzhou 310018, China; Zhejiang Sci-Tech University Shengzhou Innovation Research Institute, Shengzhou 312451, China.
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2
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Zhang T, Zhao Z, Yin X, Wang N. Organoboron based photochromic gelator. Chem Commun (Camb) 2024; 60:6500-6503. [PMID: 38832807 DOI: 10.1039/d4cc02098g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
A series of tetra-coordinate boron-peptide conjugates has been reported. The incorporation of a photochromic organoboron unit into the gelator endows photoactivity to the supramolecular gels. While the structural transformation of the gelator upon UV irradiation minimally impacts the formed self-assembled structures, it indeed influences their rheological properties.
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Affiliation(s)
- Tongtong Zhang
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 102488, P. R. China.
| | - Zhenhui Zhao
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 102488, P. R. China.
| | - Xiaodong Yin
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 102488, P. R. China.
| | - Nan Wang
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 102488, P. R. China.
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3
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Abdellatif MM, Sabry NM, Ibrahim S, Bassem SM, Khalil WKB, Abdel-Gawad FK. Evaluation of Mitigation Role of L-Phenylalanine-Based Low-Molecular-Weight Gelator against Oil Pollution-Induced Nile Tilapia Toxicity. Gels 2023; 9:848. [PMID: 37998938 PMCID: PMC10670902 DOI: 10.3390/gels9110848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 09/24/2023] [Accepted: 10/24/2023] [Indexed: 11/25/2023] Open
Abstract
A lot of oil is leaked into aquatic environments, significantly impacting fish health and, consequently, human populations. This study aimed to introduce an L-phenylalanine-based low-molecular-weight gelator (expressed as Z-Phe-C18) as a smart remediation tool for oil spills. Several groups of Nile tilapia were allocated in aquaria exposed to different doses of crude engine oil with/without the organogelator for 4 weeks. The results revealed a significant increase in biochemical oxygen demand, chemical oxygen demand, electrical conductivity, and total dissolved solids in water samples of fish aquaria exposed to oil pollution. The antioxidant activity levels, micronucleus formation, and expression patterns of stress-related genes were significantly higher in the livers of fish exposed to crude oil than in those of control fish. On the contrary, fish groups exposed to oil pollution and treated with the organogelator indicated that antioxidant enzymes, micronucleus incidence, and gene expression alteration of stress-related genes declined compared with those exposed to oil pollution only. The results suggest that oil pollution can induce oxidative stress via the enhancement of oxygen free radical formation. On the contrary, oil removal by the organogelator decreases oxidative stress and consequently strengthens fish immunity. So, we can conclude that organogelator treatment is promoting oxidative resistance development by increasing the activities of antioxidant enzymes, which are important in protection against oil pollution and preventing peroxidation of fish tissues. Promisingly, the organogelator could be used as a tool for the remediation of oil pollution in aquatic environments.
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Affiliation(s)
- Mohamed Mehawed Abdellatif
- Chemistry of Tanning Materials and Leather Technology Department, Chemical Industries Research Institute, National Research Centre, 33 El Buhouth St. Dokki, Giza 12622, Egypt
- Department of Chemistry, Tokyo Metropolitan University, 1-1 Minami Osawa, Tokyo 192-0397, Japan
| | - Noha M. Sabry
- Water Pollution Research Department, Centre of Excellence for Advanced Science (CEAS), National Research Centre (NRC), 33 El Bohouth St. Dokki, Giza 12622, Egypt; (N.M.S.); (S.M.B.)
- Center of Excellence for Research and Applied Studies on Climate Change and Sustainable Development, National Research Centre (NRC), 33 El Bohouth St. Dokki, Giza 12622, Egypt;
| | - Saber Ibrahim
- Packaging Materials Department, National Research Centre, Elbuhoth Street 33, Dokki, Cairo 12622, Egypt;
- Nanomaterials Investigation Laboratory, Central Laboratories Network, National Research Centre, Elbuhoth Street 33, Dokki, Cairo 12622, Egypt
| | - Samah M. Bassem
- Water Pollution Research Department, Centre of Excellence for Advanced Science (CEAS), National Research Centre (NRC), 33 El Bohouth St. Dokki, Giza 12622, Egypt; (N.M.S.); (S.M.B.)
- Center of Excellence for Research and Applied Studies on Climate Change and Sustainable Development, National Research Centre (NRC), 33 El Bohouth St. Dokki, Giza 12622, Egypt;
| | - Wagdy K. B. Khalil
- Center of Excellence for Research and Applied Studies on Climate Change and Sustainable Development, National Research Centre (NRC), 33 El Bohouth St. Dokki, Giza 12622, Egypt;
- Cell Biology Department, Centre of Excellence for Advanced Science (CEAS), National Research Centre (NRC), 33 El Bohouth St. Dokki, Giza 12622, Egypt
| | - Fagr Kh. Abdel-Gawad
- Water Pollution Research Department, Centre of Excellence for Advanced Science (CEAS), National Research Centre (NRC), 33 El Bohouth St. Dokki, Giza 12622, Egypt; (N.M.S.); (S.M.B.)
- Center of Excellence for Research and Applied Studies on Climate Change and Sustainable Development, National Research Centre (NRC), 33 El Bohouth St. Dokki, Giza 12622, Egypt;
- National Biotechnology Network of Expertise (NBNE), Academy of Scientific Research and Technology (ASRT), Cairo 11516, Egypt
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4
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Sun H, Jiang J, Zhang L, Yuan C, Jiang Y, Liu P. Rheological and atomization behavior of glycyrrhizic acid based supramolecular gel propellant simulant. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128460] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Xie X, Zhang Y, Liang Y, Wang M, Cui Y, Li J, Liu C. Programmable Transient Supramolecular Chiral G‐quadruplex Hydrogels by a Chemically Fueled Non‐equilibrium Self‐Assembly Strategy. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202114471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiao‐Qiao Xie
- School of Chemistry and Chemical Engineering Henan University of Technology Zhengzhou 450001 China
- Henan Provincial Key Lab of Surface & Interface Science Zhengzhou University of Light Industry Zhengzhou 450002 China
| | - Yunfei Zhang
- Henan Provincial Key Lab of Surface & Interface Science Zhengzhou University of Light Industry Zhengzhou 450002 China
| | - Yujia Liang
- Henan Provincial Key Lab of Surface & Interface Science Zhengzhou University of Light Industry Zhengzhou 450002 China
| | - Mengke Wang
- Henan Provincial Key Lab of Surface & Interface Science Zhengzhou University of Light Industry Zhengzhou 450002 China
| | - Yihan Cui
- School of Chemistry and Chemical Engineering Henan University of Technology Zhengzhou 450001 China
- Henan Provincial Key Lab of Surface & Interface Science Zhengzhou University of Light Industry Zhengzhou 450002 China
| | - Jingjing Li
- School of Chemistry and Chemical Engineering Henan University of Technology Zhengzhou 450001 China
| | - Chun‐Sen Liu
- Henan Provincial Key Lab of Surface & Interface Science Zhengzhou University of Light Industry Zhengzhou 450002 China
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6
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Xie XQ, Zhang Y, Wang M, Liang Y, Cui Y, Li J, Liu CS. Programmable Transient Supramolecular Chiral G-quadruplex Hydrogels via a Chemically Fueled Non-Equilibrium Self-assembly Strategy. Angew Chem Int Ed Engl 2021; 61:e202114471. [PMID: 34927378 DOI: 10.1002/anie.202114471] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Indexed: 11/10/2022]
Abstract
The temporal and spatial control of natural systems has aroused great interest in the creation of synthetic mimics. Operating with boronic ester-based dynamic covalent chemistry and coupling it with an internal pH feedback system, herein, we developed a new chemically fueled reaction network to design non-equilibrium supramolecular chiral G-quadruplex hydrogels with programmable lifetime from minutes, to hours, to days, as well as high transparency and conductivity, excellent injectability and rapid self-healability. The cycle system can be controlled via in-situ kinetically-controlled formation and dissociation of dynamic boronic ester bonds between cis-diols of guanosine (G) and 5-fluorobenzoxaborole (B) under chemical fuels (KOH and 1,3-propanesultone), leading to the formation of a precipitate-solution-gel-precipitate cycle under non-equilibrium conditions. A combined experimental-computational approach revealed that the underlying mechanism of the non-equilibrium self-assembly involves aggregation and disaggregation of right-handed helical G-quadruplex superstructure. With consecutive cycles of fuel addition, the non-equilibrium system can be easily refueled at least 6 cycles without obvious loss in the rheological moduli of the transient hydrogels. The proposed dynamic boronic ester-based non-equilibrium self-assembly strategy offers a new option to design next-generation adaptive and interactive smart materials.
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Affiliation(s)
- Xiao-Qiao Xie
- Henan University of Technology, School of Chemistry and Chemical Engineering, CHINA
| | - Yunfei Zhang
- Zhengzhou University of Light Industry, Henan Provincial Key Lab of Surface & Interface Science, CHINA
| | - Mengke Wang
- Zhengzhou University of Light Industry, Henan Provincial Key Lab of Surface & Interface Science, CHINA
| | - Yujia Liang
- Zhengzhou University of Light Industry, Henan Provincial Key Lab of Surface & Interface Science, CHINA
| | - Yihan Cui
- Henan University of Technology, School of Chemistry and Chemical Engineering, CHINA
| | - Jingjing Li
- Henan University of Technology, Chemistry Department, Lianhua Street No. 100, 450001, Zhengzhou, CHINA
| | - Chun-Sen Liu
- Zhengzhou University of Light Industry, Henan Provincial Key Lab of Surface & Interface Science, CHINA
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7
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Liu K, Gao S, Zheng Z, Deng X, Mukherjee S, Wang S, Xu H, Wang J, Liu J, Zhai T, Fang Y. Spatially Confined Growth of Fullerene to Super-Long Crystalline Fibers in Supramolecular Gels for High-Performance Photodetector. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2019; 31:e1808254. [PMID: 30873680 DOI: 10.1002/adma.201808254] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Revised: 02/25/2019] [Indexed: 06/09/2023]
Abstract
As a superstar organic semiconductor, fullerene (C60 ) is versatile in nature for its multiple photoelectric applications. However, owing to its natural 0D structure, a challenge still remains unbeaten as to growth of 1D fullerene crystals with tunable sizes. Herein, reported is an efficient approach to grow C60 as super-long crystalline fibers with tunable lengths and diameters in supramolecular gel by synergic changes of anti-solvent, gel length, crystallization time or fullerene concentration. As a result, the crystalline C60 fibers can be modulated to as long as 70 mm and 70 000 in their length-to-width ratio. In this case, the gel 3D network provides spatial confinements for the growth of 1D crystal along the directional dispersion of anti-solvent. The fabricated fullerene device exhibits high responsivity (2595.6 mA W-1 ) and high specific detectivity (2.7 × 1012 Jones) at 10 V bias upon irradiation of 400 nm incident light. The on/off ratio and its quantum efficiency are near to 540 and about 800%, respectively, and importantly, its photoelectric property remains very stable after storage in air for six months. Therefore, spatially confined growth of fullerene in supramolecular gels will be another crucial strategy to synthesize 1D semiconductor crystals for photoelectrical device applications in near future.
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Affiliation(s)
- Kaiqiang Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Sheng Gao
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Zhi Zheng
- State Key Laboratory of Material Processing and Die and Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Xinling Deng
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Somnath Mukherjee
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Suansuan Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Hua Xu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Jinqiang Wang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Jianfei Liu
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
| | - Tianyou Zhai
- State Key Laboratory of Material Processing and Die and Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, P. R. China
| | - Yu Fang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China
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8
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Thamizhanban A, Lalitha K, Nagarajan S. Self-Assembled Soft Materials for Energy and Environmental Applications. ACTA ACUST UNITED AC 2019. [DOI: 10.1007/978-3-030-04474-9_10] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/20/2023]
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9
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Zhang J, Zhang B, Chen Q, Zhang B, Song J. Hofmeister Anion-Induced Tunable Rheology of Self-Healing Supramolecular Hydrogels. NANOSCALE RESEARCH LETTERS 2019; 14:5. [PMID: 30613857 PMCID: PMC6321834 DOI: 10.1186/s11671-018-2823-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 11/29/2018] [Indexed: 06/09/2023]
Abstract
ᅟ: Physical gelation behaviors of a series of D-gluconic acetal-based derivatives bearing fatty alkyl amine moieties have been investigated. One of these molecules exhibits excellent gelation behaviors in water, and the resultant hydrogels are found to display self-healing properties. Interestingly, the elasticity and strength of the resulting gel can be tuned by the addition of different kinds of Hofmeister salts. The gel formation mechanism was proposed based on the analysis of FT-IR,1HNMR, and XRD, indicating that the main driving force for the self-assembly was the π-π stacking of the benzene rings in the aqueous solution system. Overall, our research provides an efficient approach for facilely tuning the properties of the D-gluconic acetal-based hydrogel. ᅟ.
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Affiliation(s)
- Jing Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin, 300072, China
- Renai College of Tianjin University, Tianjin, 301636, China
| | - Baohao Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin, 300072, China
| | - Qiang Chen
- Renai College of Tianjin University, Tianjin, 301636, China
| | - Bao Zhang
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China.
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin, 300072, China.
| | - Jian Song
- School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300350, China.
- The Co-Innovation Center of Chemistry and Chemical Engineering of Tianjin, Tianjin, 300072, China.
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10
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Zhikol OA, Shishkina SV, Lipson VV, Semenenko AN, Mazepa AV, Borisov AV, Mateychenko PV. Low molecular weight supramolecular dehydroepiandrosterone-based gelators: synthesis and molecular modeling study. NEW J CHEM 2019. [DOI: 10.1039/c9nj01390c] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Three novel isomeric low molecular weight dehydroepiandrosterone-based gelators are synthesized. Their ability to self-assemble is studied in several solvents both experimentally and theoretically by molecular modeling.
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Affiliation(s)
- Oleg A. Zhikol
- State Scientific Institution “Institute for Single Crystals” of National Academy of Sciences of Ukraine
- Kharkov 61001
- Ukraine
| | - Svitlana V. Shishkina
- State Scientific Institution “Institute for Single Crystals” of National Academy of Sciences of Ukraine
- Kharkov 61001
- Ukraine
- Chemistry Department
- V. N. Karazin Kharkov National University
| | - Victoria V. Lipson
- State Scientific Institution “Institute for Single Crystals” of National Academy of Sciences of Ukraine
- Kharkov 61001
- Ukraine
- Chemistry Department
- V. N. Karazin Kharkov National University
| | - Alexander N. Semenenko
- State Scientific Institution “Institute for Single Crystals” of National Academy of Sciences of Ukraine
- Kharkov 61001
- Ukraine
| | - Alexander V. Mazepa
- A. V. Bogatsky Physico-Chemical Institute of the National Academy of Sciences of Ukraine
- Odessa
- Ukraine
| | | | - Pavel V. Mateychenko
- State Scientific Institution “Institute for Single Crystals” of National Academy of Sciences of Ukraine
- Kharkov 61001
- Ukraine
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Okesola BO, Smith DK. Applying low-molecular weight supramolecular gelators in an environmental setting - self-assembled gels as smart materials for pollutant removal. Chem Soc Rev 2018; 45:4226-51. [PMID: 27241027 DOI: 10.1039/c6cs00124f] [Citation(s) in RCA: 475] [Impact Index Per Article: 79.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
This review explores supramolecular gels as materials for environmental remediation. These soft materials are formed by self-assembling low-molecular-weight building blocks, which can be programmed with molecular-scale information by simple organic synthesis. The resulting gels often have nanoscale 'solid-like' networks which are sample-spanning within a 'liquid-like' solvent phase. There is intimate contact between the solvent and the gel nanostructure, which has a very high effective surface area as a result of its dimensions. As such, these materials have the ability to bring a solid-like phase into contact with liquids in an environmental setting. Such materials can therefore remediate unwanted pollutants from the environment including: immobilisation of oil spills, removal of dyes, extraction of heavy metals or toxic anions, and the detection or removal of chemical weapons. Controlling the interactions between the gel nanofibres and pollutants can lead to selective uptake and extraction. Furthermore, if suitably designed, such materials can be recyclable and environmentally benign, while the responsive and tunable nature of the self-assembled network offers significant advantages over other materials solutions to problems caused by pollution in an environmental setting.
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Affiliation(s)
- Babatunde O Okesola
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
| | - David K Smith
- Department of Chemistry, University of York, Heslington, York, YO10 5DD, UK.
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12
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Miao R, Peng J, Fang Y. Molecular Gels as Intermediates in the Synthesis of Porous Materials and Fluorescent Films: Concepts and Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:10419-10428. [PMID: 28240916 DOI: 10.1021/acs.langmuir.6b04655] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Low-molecular-mass organic gelator (LMOG)-based molecular gels are known as one of the most attractive soft materials and have received great attention since the early 1990s. In the last few decades, many LMOGs have been synthesized, and a series of theories have been proposed to better understand molecular gels. However, only limited applications of LMOGs have been realized for a variety of reasons, such as their lack of stability compared to chemical gels. Therefore, efforts to explore the applications of these materials are especially meaningful. As an example, this feature article mainly introduces studies on the application of LMOGs as intermediates in porous materials and fluorescent sensing films. Particular attention will be paid to gelator design, LMOG emulsion preparation, solid surface modification, and the practical application of the obtained materials. Concepts that are related to these studies, such as organic gel-water interface equilibria and molecular gel strategies, will be comprehensively illustrated. Finally, we will conclude with a study of LMOG-based intermediates. Some challenges and future perspectives related to these research areas will also be presented. It is anticipated that this feature article will not only contribute to the further understanding of LMOG-based intermediates but also will help to promote the practical application of molecular gels and facilitate development in related research areas.
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Affiliation(s)
- Rong Miao
- Key Laboratory of Applied Surface and Colloid Chemistry of the Ministry of Education, School of Materials Science and Engineering and ‡School of Chemistry and Chemical Engineering, Shaanxi Normal University Xi'an 710062, People's Republic of China
| | - Junxia Peng
- Key Laboratory of Applied Surface and Colloid Chemistry of the Ministry of Education, School of Materials Science and Engineering and ‡School of Chemistry and Chemical Engineering, Shaanxi Normal University Xi'an 710062, People's Republic of China
| | - Yu Fang
- Key Laboratory of Applied Surface and Colloid Chemistry of the Ministry of Education, School of Materials Science and Engineering and ‡School of Chemistry and Chemical Engineering, Shaanxi Normal University Xi'an 710062, People's Republic of China
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Roy S, Maiti M, Roy A. A New Class of Boronic Acid-Derived Amphiphile-Based Gel Emulsions Capable of Entrapping and Releasing Vitamin B12
and Doxorubicin. ChemistrySelect 2017. [DOI: 10.1002/slct.201701397] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Sumita Roy
- Department of Chemistry and Chemical Technology; Vidyasagar University; Paschim Medinipur- 721 102, West Bengal India
| | - Monali Maiti
- Department of Chemistry and Chemical Technology; Vidyasagar University; Paschim Medinipur- 721 102, West Bengal India
| | - Aparna Roy
- Department of Chemistry and Chemical Technology; Vidyasagar University; Paschim Medinipur- 721 102, West Bengal India
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14
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Wang Y, Wu S, Yan X, Ma T, Shao L, Liu Y, Guo Z. Alkyl bicarbamates supramolecular organogelators with effective selective gelation and high oil recovery from oil/water mixtures. CHEMOSPHERE 2017; 167:178-187. [PMID: 27718430 DOI: 10.1016/j.chemosphere.2016.09.149] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2016] [Revised: 09/27/2016] [Accepted: 09/29/2016] [Indexed: 06/06/2023]
Abstract
A series of alkyl bicarbamates supramolecular organogelators were synthesized with different structures and lengths of alkyl chains. The driving forces for the self-assembly of small molecules, including the intermolecular H bonding, π-π stacking and van der Waals interactions, played an important role in the formation of different 3D network structures, i.e., fibers, ribbons, sheets, and prisms. And a probable formation process of the gel networks was proposed. Furthermore, the phase-selective gelling performances were investigated for oil removal from aqueous solution. Interestingly, the gelling properties were found to be affected by the length and structure of alkyl chains, while some gelators with intermediate alkyl chain lengths could effectively gel all the tested oils from water surface within 15 min, such as Russian crude oil, diesel, gasoline, soybean oil, peanut oil, olive oil, cyclohexane, hexane and ethyl acetate. Advantageously, fast gelation, high rate of oil removal (>95%) and excellent oil retention rate (close to 100%) were realized in the recovery of oil spills from water surface. This kind of supramolecular gelators demonstrates good potential applications in the delivery or removal of organic pollution from oil/water mixtures.
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Affiliation(s)
- Yongzhen Wang
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, China
| | - Songquan Wu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, China
| | - Xingru Yan
- Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA
| | - Tao Ma
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, China
| | - Lu Shao
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, China
| | - Yuyan Liu
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, China.
| | - Zhanhu Guo
- Integrated Composites Laboratory (ICL), Department of Chemical & Biomolecular Engineering, University of Tennessee, Knoxville, TN 37996, USA.
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15
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Nano- and microparticles of gelled oil combining aminoacid-based low molecular weight organogelators and nonionic amphiphilic polysaccharides. Colloids Surf A Physicochem Eng Asp 2017. [DOI: 10.1016/j.colsurfa.2016.11.036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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16
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Kesava Raju CS, Pramanik B, Ravishankar R, Chalapathi Rao PV, Sriganesh G. Xylitol based phase selective organogelators for potential oil spillage recovery. RSC Adv 2017. [DOI: 10.1039/c7ra06898k] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Xylitol based cost effective and easily synthesizable phase selective gelators were developed for strong gelation ability for different crude oils, wide range of refinery products and reported for their potential application in oil spillage recovery.
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Affiliation(s)
| | - Bhaskar Pramanik
- Analytical Division
- Hindustan Petroleum Green R&D Center (HPGRDC)
- KIADB Industrial Estate
- Bangalore
- India
| | - Raman Ravishankar
- Analytical Division
- Hindustan Petroleum Green R&D Center (HPGRDC)
- KIADB Industrial Estate
- Bangalore
- India
| | | | - Gandham Sriganesh
- Analytical Division
- Hindustan Petroleum Green R&D Center (HPGRDC)
- KIADB Industrial Estate
- Bangalore
- India
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17
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Gao S, Wang S, Ma J, Wu Y, Fu X, Marella RK, Liu K, Fang Y. Salt Tunable Rheology of Thixotropic Supramolecular Organogels and Their Applications for Crystallization of Organic Semiconductors. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:12805-12813. [PMID: 27794610 DOI: 10.1021/acs.langmuir.6b03375] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Physical gelation behaviors of a series of novel bisurea-based derivatives bearing fatty alkyl tertiary amine moieties have been explored in water and common organic solvents. One of these amines exhibits very good thixotropic gels in apolar aromatic solvents (e.g., xylenes). The corresponding sol-gel transition is instantaneous and could be repeated for at least 50 cycles. Interestingly, the elasticity and strength of the resulting gels can be remarkably enhanced initially by the addition of a trace amount of tetrabutylammonium acetate (TBA) followed by a subsequent drop with further salt addition. Temperature-dependent 1H NMR confirmed that hydrogen bonding is the main driving force for the physical gelation. TEM, rheology, 1H NMR titration, and examination of critical gelation concentration (CGC) reveal that the phenomenon is due to the dominated effects, the salting out effect at lower TBA concentration, or the anion-urea hydrogen bonding at higher TBA concentration. Furthermore, the obtained transparent gels in this work can be used as good media for growing crystals of several organic semiconductors.
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Affiliation(s)
- Sheng Gao
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University , No. 620, West Chang'an Avenue, Chang'an District, Xi'an 710119, People's Republic of China
| | - Suansuan Wang
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University , No. 620, West Chang'an Avenue, Chang'an District, Xi'an 710119, People's Republic of China
| | - Jing Ma
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University , No. 620, West Chang'an Avenue, Chang'an District, Xi'an 710119, People's Republic of China
| | - Ying Wu
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University , No. 620, West Chang'an Avenue, Chang'an District, Xi'an 710119, People's Republic of China
| | - Xuwei Fu
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University , No. 620, West Chang'an Avenue, Chang'an District, Xi'an 710119, People's Republic of China
| | - Ravi Kumar Marella
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University , No. 620, West Chang'an Avenue, Chang'an District, Xi'an 710119, People's Republic of China
| | - Kaiqiang Liu
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University , No. 620, West Chang'an Avenue, Chang'an District, Xi'an 710119, People's Republic of China
| | - Yu Fang
- Key Laboratory of Applied Surface and Colloid Chemistry (Ministry of Education), School of Chemistry and Chemical Engineering, Shaanxi Normal University , No. 620, West Chang'an Avenue, Chang'an District, Xi'an 710119, People's Republic of China
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18
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Norouzi M, Nazari B, Miller DW. Injectable hydrogel-based drug delivery systems for local cancer therapy. Drug Discov Today 2016; 21:1835-1849. [PMID: 27423369 DOI: 10.1016/j.drudis.2016.07.006] [Citation(s) in RCA: 297] [Impact Index Per Article: 37.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2016] [Revised: 07/05/2016] [Accepted: 07/07/2016] [Indexed: 01/17/2023]
Abstract
Common chemotherapy is often associated with adverse effects in normal cells and tissues. As an alternative approach, localized chemotherapy can diminish the toxicity of systemic chemotherapy while providing a sustained release of the chemotherapeutics at the target tumor site. Therefore, injectable biodegradable hydrogels as drug delivery systems for chemotherapeutics have become a matter of importance. Here, we review the application of a variety of injectable hydrogel-based drug delivery systems, including thermosensitive, pH-sensitive, photosensitive, dual-sensitive, as well as active targeting hydrogels, for the treatment of different types of cancer. Generally, injectable hydrogel-based drug delivery systems are found to be more efficacious than the conventional systemic chemotherapy in terms of cancer treatment.
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Affiliation(s)
- Mohammad Norouzi
- Graduate Program of Biomedical Engineering, University of Manitoba, Winnipeg, MB, Canada; Department of Nanotechnology and Tissue Engineering, Stem Cell Technology Research Center, Tehran, Iran.
| | - Bahareh Nazari
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Donald W Miller
- Graduate Program of Biomedical Engineering, University of Manitoba, Winnipeg, MB, Canada; Department of Pharmacology and Therapeutics, University of Manitoba, Winnipeg, MB, Canada.
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19
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Ohsedo Y. Low-molecular-weight organogelators as functional materials for oil spill remediation. POLYM ADVAN TECHNOL 2015. [DOI: 10.1002/pat.3712] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yutaka Ohsedo
- Advanced Materials Research Laboratory, Collaborative Research Division, Art, Science and Technology, Center for Cooperative Research; Kyushu University; 4-1 Kyudaishinmachi, Nishi-ku Fukuoka Japan
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20
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Yan J, Liu J, Lei H, Kang Y, Zhao C, Fang Y. Ferrocene-containing thixotropic molecular gels: Creation and a novel strategy for water purification. J Colloid Interface Sci 2015; 448:374-9. [DOI: 10.1016/j.jcis.2015.02.044] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 02/13/2015] [Accepted: 02/14/2015] [Indexed: 01/11/2023]
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21
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Ohsedo Y, Oono M, Saruhashi K, Watanabe H. A new water-soluble aromatic polyamide hydrogelator with thixotropic properties. RSC Adv 2015. [DOI: 10.1039/c5ra16824d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The water-soluble aromatic polyamide poly(3-sodium sulfo-p-phenylene terephthalamide) forms a hydrogel with anisotropy, which exhibits good thixotropic behaviour, even at the critical gel concentration of the gelator (1.0 wt%).
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Affiliation(s)
- Yutaka Ohsedo
- Advanced Materials Research Laboratory
- Collaborative Research Division, Art, Science and Technology Center for Cooperative Research
- Kyushu University
- Nishi-ku
- Japan
| | - Masashi Oono
- Nissan Chemical Industries, Ltd
- 2-10-1 Tsuboinishi, Funabashi
- Japan
| | | | - Hisayuki Watanabe
- Advanced Materials Research Laboratory
- Collaborative Research Division, Art, Science and Technology Center for Cooperative Research
- Kyushu University
- Nishi-ku
- Japan
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22
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Ohsedo Y, Taniguchi M, Saruhashi K, Watanabe H. Improved mechanical properties of polyacrylamide hydrogels created in the presence of low-molecular-weight hydrogelators. RSC Adv 2015. [DOI: 10.1039/c5ra16823f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
It was found that the crushing stress of the obtained polyacrylamide hydrogels was enhanced by using the molecular gel as removable templates.
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Affiliation(s)
- Yutaka Ohsedo
- Advanced Materials Research Laboratory
- Collaborative Research Division, Art, Science and Technology Center for Cooperative Research
- Kyushu University
- Nishi-ku
- Japan
| | - Makiko Taniguchi
- Advanced Materials Research Laboratory
- Collaborative Research Division, Art, Science and Technology Center for Cooperative Research
- Kyushu University
- Nishi-ku
- Japan
| | | | - Hisayuki Watanabe
- Advanced Materials Research Laboratory
- Collaborative Research Division, Art, Science and Technology Center for Cooperative Research
- Kyushu University
- Nishi-ku
- Japan
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23
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Ohsedo Y, Taniguchi M, Oono M, Saruhashi K, Watanabe H. Long-chain alkylamide-derived oil gels: mixing induced onset of thixotropy and application in sustained drug release. NEW J CHEM 2015. [DOI: 10.1039/c5nj00999e] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Oil gels composed of long-chain alkylamides exhibited thixotropic properties, although the same property was absent in each alkylamide.
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Affiliation(s)
- Yutaka Ohsedo
- Advanced Materials Research Laboratory
- Collaborative Research Division, Art, Science and Technology Center for Cooperative Research
- Kyushu University
- Nishi-ku
- Japan
| | - Makiko Taniguchi
- Advanced Materials Research Laboratory
- Collaborative Research Division, Art, Science and Technology Center for Cooperative Research
- Kyushu University
- Nishi-ku
- Japan
| | | | | | - Hisayuki Watanabe
- Advanced Materials Research Laboratory
- Collaborative Research Division, Art, Science and Technology Center for Cooperative Research
- Kyushu University
- Nishi-ku
- Japan
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24
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Hu B, Liu K, Chen X, Fang Y. Preparation of a scorpion-shaped di-NBD derivative of cholesterol and its thixotropic property. Sci China Chem 2014. [DOI: 10.1007/s11426-014-5135-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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25
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Babu SS, Praveen VK, Ajayaghosh A. Functional π-gelators and their applications. Chem Rev 2014; 114:1973-2129. [PMID: 24400783 DOI: 10.1021/cr400195e] [Citation(s) in RCA: 1220] [Impact Index Per Article: 122.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Sukumaran Santhosh Babu
- Photosciences and Photonics Group, Chemical Sciences and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST) , Trivandrum 695019, India
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26
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Yadav P, Ballabh A. Room temperature metallogelation for a simple series of aminothiazole ligands with potential applications in identifying and scavenging mercury ions. RSC Adv 2014. [DOI: 10.1039/c3ra45024d] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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27
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Ohsedo Y, Taniguchi M, Oono M, Saruhashi K, Watanabe H. Creation of thixotropic multicomponent alkylamide organogels containing non-volatile oil as potential drug release host materials. RSC Adv 2014. [DOI: 10.1039/c4ra06130f] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Multicomponent alkylamide organogels containing non-volatile oils were generated as potential thixotropic host materials for medicinal applications such as ointments.
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Affiliation(s)
- Yutaka Ohsedo
- Advanced Materials Research Laboratory
- Collaborative Research Division
- Art, Science and Technology Center for Cooperative Research
- Kyushu University
- Fukuoka 819-0388, Japan
| | - Makiko Taniguchi
- Advanced Materials Research Laboratory
- Collaborative Research Division
- Art, Science and Technology Center for Cooperative Research
- Kyushu University
- Fukuoka 819-0388, Japan
| | - Masashi Oono
- Nissan Chemical Industries, Ltd
- Chiba 274-8507, Japan
| | | | - Hisayuki Watanabe
- Advanced Materials Research Laboratory
- Collaborative Research Division
- Art, Science and Technology Center for Cooperative Research
- Kyushu University
- Fukuoka 819-0388, Japan
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28
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Mukherjee S, Shang C, Chen X, Chang X, Liu K, Yu C, Fang Y. N-Acetylglucosamine-based efficient, phase-selective organogelators for oil spill remediation. Chem Commun (Camb) 2014; 50:13940-3. [DOI: 10.1039/c4cc06024e] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two simple, eco-friendly and efficient carbohydrate gelators have been created for instant selective gelation of oil from oil–water mixtures to combat marine oil spills.
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Affiliation(s)
- Somnath Mukherjee
- Key Laboratory of Applied Surface and Colloid Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710062, P. R. China
| | - Congdi Shang
- Key Laboratory of Applied Surface and Colloid Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710062, P. R. China
| | - Xiangli Chen
- Key Laboratory of Applied Surface and Colloid Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710062, P. R. China
| | - Xingmao Chang
- Key Laboratory of Applied Surface and Colloid Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710062, P. R. China
| | - Kaiqiang Liu
- Key Laboratory of Applied Surface and Colloid Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710062, P. R. China
| | - Chunmeng Yu
- Key Laboratory of Applied Surface and Colloid Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710062, P. R. China
| | - Yu Fang
- Key Laboratory of Applied Surface and Colloid Chemistry
- Ministry of Education
- School of Chemistry and Chemical Engineering
- Shaanxi Normal University
- Xi'an 710062, P. R. China
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29
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In situ formation of steroidal supramolecular gels designed for drug release. Molecules 2013; 18:3745-59. [PMID: 23529034 PMCID: PMC6270054 DOI: 10.3390/molecules18043745] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2013] [Revised: 03/19/2013] [Accepted: 03/21/2013] [Indexed: 11/17/2022] Open
Abstract
In this work, a steroidal gelator containing an imine bond was synthesized, and its gelation behavior as well as a sensitivity of its gels towards acids was investigated. It was shown that the gels were acid-responsive, and that the gelator molecules could be prepared either by a conventional synthesis or directly in situ during the gel forming process. The gels prepared by both methods were studied and it was found that they had very similar macro- and microscopic properties. Furthermore, the possibility to use the gels as carriers for aromatic drugs such as 5-chloro-8-hydroxyquinoline, pyrazinecarboxamide, and antipyrine was investigated and the prepared two-component gels were studied with regard to their potential applications in drug delivery, particularly in a pH-controlled drug release.
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30
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Wu J, Lu J, Hu J, Gao Y, Ma Q, Ju Y. Self-assembly of sodium glycyrrhetinate into a hydrogel: characterisation and properties. RSC Adv 2013. [DOI: 10.1039/c3ra43306d] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
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31
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Shigeno M, Yamaguchi M. Formation of organic gel–liquid two-layer systems using diffusion-controlled gelation with a helicene derivative. Chem Commun (Camb) 2012; 48:6139-41. [DOI: 10.1039/c2cc31977b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Hou X, Gao D, Yan J, Ma Y, Liu K, Fang Y. Novel dimeric cholesteryl derivatives and their smart thixotropic gels. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:12156-12163. [PMID: 21866964 DOI: 10.1021/la2022819] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Three novel LS(2)-type dimeric-cholesteryl derivatives (1-3), where S is a steroidal residue and L stands for a linker connecting the two S residues and contains three benzene rings and two amide and two carbamate groups, were designed and prepared. The compounds can gel a wide variety of organic solvents via three different ways, including mixing at room temperature, a heating-cooling cycle, and ultrasound treatment. SEM measurements revealed that the structures and the concentrations of the gelators, the nature of the solvent, and the preparation method employed have a great effect on the morphologies of the gel networks. It was revealed that 1 is a supergelator for DMSO (cgc = 0.04% w/v) and that the 1/DMSO gel can be prepared via any of the three methods mentioned above. Furthermore, the gel possesses excellent mechanical strength and a very smart thixotropic property. FT-IR and temperature- and concentration-dependent (1)H NMR spectroscopy studies revealed that hydrogen bonding and π-π stacking among the molecules of 1 are two important driving forces for the physical gelation of DMSO. In addition, XRD analysis confirmed the layered packing structure of 1 in its DMSO gel.
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Affiliation(s)
- Xiaoyu Hou
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China
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