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Vinod Mouli MSS, Mishra AK. Flavin based supramolecular gel displaying multi-stimuli triggered sol-gel transition. Org Biomol Chem 2023. [PMID: 37377152 DOI: 10.1039/d3ob00720k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Abstract
Herein, we report the design and synthesis of an amphiphilic flavin analogue as a robust low molecular weight gelator involving minimal structural modification. Four flavin analogues were evaluated for their gelation capabilities and the flavin analogue with antipodal positioning of the carboxyl and octyl functionalities was found to be the most efficient gelator with the minimum gelation concentration being as low as 0.03 M. A wide range of solvents were used for gelation studies suggesting its widespread applicability. Morphological, photophysical and rheological characterization studies were performed to fully characterize the nature of the gel. Interestingly, reversible multiple stimuli responsive sol-gel transition was observed with changing pH and redox activity, while metal screening showed specific transition in the presence of ferric ions. The gel was able to differentiate between ferric and ferrous species with well-defined sol-gel transition. The current results potentially offer a redox-active flavin-based material as a low molecular weight gelator for the development of next-generation materials.
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Affiliation(s)
- M S S Vinod Mouli
- Department of Chemistry, Indian Institute of Technology-Hyderabad, Kandi, 502284, Sangareddy, India.
| | - Ashutosh Kumar Mishra
- Department of Chemistry, Indian Institute of Technology-Hyderabad, Kandi, 502284, Sangareddy, India.
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2
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Li S, Zhao X, Wang Q, Yu F, Li W, Bai Y, Shen X, Du X, He D, Yuan J. Mechanoresponsive Drug Loading System with Tunable Host-Guest Interactions for Ocular Disease Treatment. ACS Biomater Sci Eng 2022; 8:4850-4862. [PMID: 36214483 DOI: 10.1021/acsbiomaterials.2c00931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Conventional administration of eye drops often requires high dosages and/or repetitive treatments to achieve therapeutic efficacy. This is inefficient and may result in side effects or even toxicity. Although many delivery systems of ophthalmic drugs have been reported, most of them work in a fixed format in which both the type and dose of the loaded drugs cannot be changed upon demand. To overcome this limitation, a hybrid double network hydrogel system composed of methacryloyl gelatin, pluronic F127 diacrylate, and β-cyclodextrin-modified oxidized dextran was developed. The hydrogels presented good mechanical strength and biocompatibility. In vitro assessments demonstrated that the hydrogels loaded with commonly used ophthalmic drugs could sustain the drug release for more than 21 days. This hydrogel system exhibited features of mechanoresponsive drug loading, and the capacity of drug loading could be significantly enhanced by macroscopically mechanical compression. Further in vivo evaluation of the drug delivery capacity showed that a dexamethasone-loaded hydrogel as a fornix insert effectively suppressed upregulation of proangiogenic factors and suture-induced corneal neovascularization in rats. This novel hydrogel system represents a promising drug delivery platform, which could potentially improve the treatments of ocular surface and other diseases.
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Affiliation(s)
- Saiqun Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510623, China
| | - Xuan Zhao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510623, China
| | - Qian Wang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510623, China
| | - Fei Yu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510623, China
| | - Weihua Li
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510623, China
| | - Ying Bai
- Guangdong Engineering Technology Research Centre for Functional Biomaterials, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Xuanren Shen
- Guangdong Engineering Technology Research Centre for Functional Biomaterials, School of Materials Science and Engineering, Sun Yat-sen University, Guangzhou 510006, China
| | - Xinyue Du
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510623, China
| | - Dalian He
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510623, China
| | - Jin Yuan
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangzhou 510623, China
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3
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Sumitani R, Mochida T. Switchable ionic conductivity and viscoelasticity of ionogels containing photo- and thermo-responsive organometallic ionic liquids. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117510] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Zhang B, Zhang X, Wan K, Zhu J, Xu J, Zhang C, Liu T. Dense Hydrogen-Bonding Network Boosts Ionic Conductive Hydrogels with Extremely High Toughness, Rapid Self-Recovery, and Autonomous Adhesion for Human-Motion Detection. RESEARCH 2021; 2021:9761625. [PMID: 33997787 PMCID: PMC8067885 DOI: 10.34133/2021/9761625] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Accepted: 03/04/2021] [Indexed: 12/31/2022]
Abstract
The construction of ionic conductive hydrogels with high transparency, excellent mechanical robustness, high toughness, and rapid self-recovery is highly desired yet challenging. Herein, a hydrogen-bonding network densification strategy is presented for preparing a highly stretchable and transparent poly(ionic liquid) hydrogel (PAM-r-MVIC) from the perspective of random copolymerization of 1-methyl-3-(4-vinylbenzyl) imidazolium chloride and acrylamide in water. Ascribing to the formation of a dense hydrogen-bonding network, the resultant PAM-r-MVIC exhibited an intrinsically high stretchability (>1000%) and compressibility (90%), fast self-recovery with high toughness (2950 kJ m−3), and excellent fatigue resistance with no deviation for 100 cycles. Dissipative particle dynamics simulations revealed that the orientation of hydrogen bonds along the stretching direction boosted mechanical strength and toughness, which were further proved by the restriction of molecular chain movements ascribing to the formation of a dense hydrogen-bonding network from mean square displacement calculations. Combining with high ionic conductivity over a wide temperature range and autonomous adhesion on various surfaces with tailored adhesive strength, the PAM-r-MVIC can readily work as a highly stretchable and healable ionic conductor for a capacitive/resistive bimodal sensor with self-adhesion, high sensitivity, excellent linearity, and great durability. This study might provide a new path of designing and fabricating ionic conductive hydrogels with high mechanical elasticity, high toughness, and excellent fatigue resilience for skin-inspired ionic sensors in detecting complex human motions.
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Affiliation(s)
- Bing Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Innovation Center for Textile Science and Technology, Donghua University, Shanghai 201620, China
| | - Xu Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Innovation Center for Textile Science and Technology, Donghua University, Shanghai 201620, China
| | - Kening Wan
- School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, UK
| | - Jixin Zhu
- Shaanxi Institute of Flexible Electronics (SIFE), Northwestern Polytechnical University (NPU), 127 West Youyi Road, Xi'an 710072, China
| | - Jingsan Xu
- School of Chemistry, Physics and Mechanical Engineering, Queensland University of Technology, Brisbane, QLD 4001, Australia
| | - Chao Zhang
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Innovation Center for Textile Science and Technology, Donghua University, Shanghai 201620, China
| | - Tianxi Liu
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Innovation Center for Textile Science and Technology, Donghua University, Shanghai 201620, China.,Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, Wuxi 214122, China
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5
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Sinawang G, Osaki M, Takashima Y, Yamaguchi H, Harada A. Biofunctional hydrogels based on host–guest interactions. Polym J 2020. [DOI: 10.1038/s41428-020-0352-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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Sinawang G, Osaki M, Takashima Y, Yamaguchi H, Harada A. Supramolecular self-healing materials from non-covalent cross-linking host-guest interactions. Chem Commun (Camb) 2020; 56:4381-4395. [PMID: 32249859 DOI: 10.1039/d0cc00672f] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The introduction of non-covalent bonds is effective for achieving self-healing properties because they can be controlled reversibly. One approach to introduce these bonds into supramolecular materials is use of host-guest interactions. This feature article summarizes the development of supramolecular materials constructed by non-covalent cross-linking through several approaches, such as host-guest interactions between host polymers and guest polymers, 1 : 2-type host-guest interactions, and host-guest interactions from the polymerization of host-guest inclusion complexes. Host-guest interactions show self-healing functions while also enabling stimuli-responsiveness (redox, pH, and temperature). The self-healing function of supramolecular materials is achieved by stress dispersion arising from host-guest interactions when stress is applied. Reversible bonds based on host-guest interactions have tremendous potential to expand the variety of functional materials.
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Affiliation(s)
- Garry Sinawang
- Department of Macromolecular Science, Graduate School of Science, Osaka University, 1-1 Machikaneyama, Toyonaka, Osaka 560-0043, Japan.
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Balakrishnan SB, Thambusamy S. Preparation of silver nanoparticles and riboflavin embedded electrospun polymer nanofibrous scaffolds for in vivo wound dressing application. Process Biochem 2020. [DOI: 10.1016/j.procbio.2019.09.033] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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Šantić A, Brinkkötter M, Portada T, Frkanec L, Cremer C, Schönhoff M, Moguš-Milanković A. Supramolecular ionogels prepared with bis(amino alcohol)oxamides as gelators: ionic transport and mechanical properties. RSC Adv 2020; 10:17070-17078. [PMID: 35496933 PMCID: PMC9053178 DOI: 10.1039/d0ra01249a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2020] [Revised: 05/27/2020] [Accepted: 04/21/2020] [Indexed: 12/12/2022] Open
Abstract
Novel supramolecular ionogels with high ionic conductivity and variable mechanical strength prepared by gelation of ionic liquid [C4mim][N(Tf)2] with (S,S)-bis(phenylalaninol)oxamide.
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Affiliation(s)
- Ana Šantić
- Laboratory for Functional Materials
- Division of Materials Chemistry
- Ruđer Bošković Institute
- 10000 Zagreb
- Croatia
| | - Marc Brinkkötter
- Institute of Physical Chemistry
- University of Muenster
- 48149 Münster
- Germany
| | - Tomislav Portada
- Laboratory of Supramolecular Chemistry
- Division of Organic Chemistry and Biochemistry
- Ruđer Bošković Institute
- 10000 Zagreb
- Croatia
| | - Leo Frkanec
- Laboratory of Supramolecular Chemistry
- Division of Organic Chemistry and Biochemistry
- Ruđer Bošković Institute
- 10000 Zagreb
- Croatia
| | - Cornelia Cremer
- Institute of Physical Chemistry
- University of Muenster
- 48149 Münster
- Germany
| | - Monika Schönhoff
- Institute of Physical Chemistry
- University of Muenster
- 48149 Münster
- Germany
| | - Andrea Moguš-Milanković
- Laboratory for Functional Materials
- Division of Materials Chemistry
- Ruđer Bošković Institute
- 10000 Zagreb
- Croatia
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Tsuge A, Kamoto R, Yakeya D, Araki K. Gelating Abilities of Two-Component System of Catecholic Derivatives and a Boronic Acid. Gels 2019; 5:E45. [PMID: 31652656 PMCID: PMC6956141 DOI: 10.3390/gels5040045] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 08/20/2019] [Accepted: 10/18/2019] [Indexed: 12/11/2022] Open
Abstract
In the last two decades, various kinds of the low-molecular-weight organogelators (LMOGs) have been investigated in terms of technological applications in various fields as well as their fundamental scientific properties. The process of gelation is generally considered to arise from immobilization of the solvents in the three-dimensional networks formed by the assembly of gelator molecules through weak intermolecular noncovalent interactions. From these points of view a huge number of organogelators have been developed so far. In the course of our research on LMOGs we have noticed a mixture of two gelators could show a different trend in gelation compared to the single gelator. It is well known that the catecholic moiety easily forms cyclic boronate esters with the boronic acid. Thus, we have investigated the two-component system based on cyclic boronate esters formed by the catechols and a boronic acid in terms of the control of gelation capability. Basic gelation properties of the constituent catecholic gelators have also been clarified. The catecholic gelators with the amide unit form no gel by addition of the boronic acid. In contrast, the catecholic gelators with the glutamic acid moiety improve their gelation abilities by mixing with the boronic acid. Furthermore, the gelation ability of the catecholic gelators having the urea unit is maintained after addition of the boronic acid. It has been found that gelation abilities of the catecholic gelators are highly affected by addition of the boronic acid. In terms of practical applications some gels can be obtained by on-site mixture of two kinds of solutions.
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Affiliation(s)
- Akihiko Tsuge
- Department of Applied Chemistry, Kyushu Institute of Technology, Kitakyushu 804-8550, Japan.
| | - Ryota Kamoto
- Department of Applied Chemistry, Kyushu Institute of Technology, Kitakyushu 804-8550, Japan.
| | - Daisuke Yakeya
- Department of Applied Chemistry, Kyushu Institute of Technology, Kitakyushu 804-8550, Japan.
| | - Koji Araki
- Department of Applied Chemistry, Kyushu Institute of Technology, Kitakyushu 804-8550, Japan.
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Sinawang G, Kobayashi Y, Osaki M, Takashima Y, Harada A, Yamaguchi H. Mechanical and self-recovery properties of supramolecular ionic liquid elastomers based on host–guest interactions and correlation with ionic liquid content. RSC Adv 2019; 9:22295-22301. [PMID: 35519478 PMCID: PMC9066642 DOI: 10.1039/c9ra04623b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 07/10/2019] [Indexed: 02/05/2023] Open
Abstract
Supramolecular materials have received considerable attention due to their higher fracture energy and self-recovery capability compared to conventional chemically cross-linked materials. Herein, we focus on the mechanical properties and self-recovery behaviours of supramolecular polymeric elastomers swollen with ionic liquid. We also gained insight into the correlation between ionic liquid content and mechanical properties. These supramolecular polymers with ionic liquid can be easily prepared from bulk copolymerization of the host–guest complex (peracetylated cyclodextrin and adamantane derivatives) and alkyl acrylates and subsequent immersion in ionic liquid such as 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide. The supramolecular polymeric elastomers showed a self-recovery ability, which the conventional chemically cross-linked elastomers with ionic liquid cannot achieve. Supramolecular ionic liquid elastomers showed higher fracture energy than chemically cross-linked ionic liquid elastomers and also self-recovery ability.![]()
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Affiliation(s)
- Garry Sinawang
- Department of Macromolecular Science
- Graduate School of Science
- Osaka University
- Osaka 560-0043
- Japan
| | - Yuichiro Kobayashi
- Department of Macromolecular Science
- Graduate School of Science
- Osaka University
- Osaka 560-0043
- Japan
| | - Motofumi Osaki
- Department of Macromolecular Science
- Graduate School of Science
- Osaka University
- Osaka 560-0043
- Japan
| | - Yoshinori Takashima
- Department of Macromolecular Science
- Graduate School of Science
- Osaka University
- Osaka 560-0043
- Japan
| | - Akira Harada
- Department of Macromolecular Science
- Graduate School of Science
- Osaka University
- Osaka 560-0043
- Japan
| | - Hiroyasu Yamaguchi
- Department of Macromolecular Science
- Graduate School of Science
- Osaka University
- Osaka 560-0043
- Japan
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