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Alfei S, Zuccari G, Athanassopoulos CM, Domenicotti C, Marengo B. Strongly ROS-Correlated, Time-Dependent, and Selective Antiproliferative Effects of Synthesized Nano Vesicles on BRAF Mutant Melanoma Cells and Their Hyaluronic Acid-Based Hydrogel Formulation. Int J Mol Sci 2024; 25:10071. [PMID: 39337557 PMCID: PMC11432396 DOI: 10.3390/ijms251810071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2024] [Revised: 09/12/2024] [Accepted: 09/16/2024] [Indexed: 09/30/2024] Open
Abstract
Cutaneous metastatic melanoma (CMM) is the most aggressive form of skin cancer with a poor prognosis. Drug-induced secondary tumorigenesis and the emergency of drug resistance worsen an already worrying scenario, thus rendering urgent the development of new treatments not dealing with mutable cellular processes. Triphenyl phosphonium salts (TPPSs), in addiction to acting as cytoplasmic membrane disruptors, are reported to be mitochondria-targeting compounds, exerting anticancer effects mainly by damaging their membranes and causing depolarization, impairing mitochondria functions and their DNA, triggering oxidative stress (OS), and priming primarily apoptotic cell death. TPP-based bola amphiphiles are capable of self-forming nanoparticles (NPs) with enhanced biological properties, as commonly observed for nanomaterials. Already employed in several other biomedical applications, the per se selective potent antibacterial effects of a TPP bola amphiphile have only recently been demonstrated on 50 multidrug resistant (MDR) clinical superbugs, as well as its exceptional and selective anticancer properties on sensitive and MDR neuroblastoma cells. Here, aiming at finding new molecules possibly developable as new treatments for counteracting CMM, the effects of this TPP-based bola amphiphile (BPPB) have been investigated against two BRAF mutants CMM cell lines (MeOV and MeTRAV) with excellent results (even IC50 = 49 nM on MeOV after 72 h treatment). With these findings and considering the low cytotoxicity of BPPB against different mammalian non-tumoral cell lines and red blood cells (RBCs, selectivity indexes up to 299 on MeOV after 72 h treatment), the possible future development of BPPB as topical treatment for CMM lesions was presumed. With this aim, a biodegradable hyaluronic acid (HA)-based hydrogel formulation (HA-BPPB-HG) was prepared without using any potentially toxic crosslinking agents simply by dispersing suitable amounts of the two ingredients in water and sonicating under gentle heating. HA-BPPB-HA was completely characterized, with promising outcomes such as high swelling capability, high porosity, and viscous elastic rheological behavior.
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Affiliation(s)
- Silvana Alfei
- Department of Pharmacy, University of Genoa, Viale Cembrano, 16148 Genoa, Italy;
| | - Guendalina Zuccari
- Department of Pharmacy, University of Genoa, Viale Cembrano, 16148 Genoa, Italy;
- Laboratory of Experimental Therapies in Oncology, IRCCS Istituto Giannina Gaslini, Via G. Gaslini 5, 16147 Genoa, Italy
| | | | - Cinzia Domenicotti
- Department of Experimental Medicine (DIMES), University of Genova, Via Alberti L.B., 16132 Genoa, Italy;
- IRCCS Ospedale Policlinico San Martino, 16132 Genoa, Italy
| | - Barbara Marengo
- Department of Experimental Medicine (DIMES), University of Genova, Via Alberti L.B., 16132 Genoa, Italy;
- IRCCS Ospedale Policlinico San Martino, 16132 Genoa, Italy
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2
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Croitoru GA, Pîrvulescu DC, Niculescu AG, Rădulescu M, Grumezescu AM, Nicolae CL. Advancements in Aerogel Technology for Antimicrobial Therapy: A Review. NANOMATERIALS (BASEL, SWITZERLAND) 2024; 14:1110. [PMID: 38998715 PMCID: PMC11243751 DOI: 10.3390/nano14131110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Revised: 06/25/2024] [Accepted: 06/26/2024] [Indexed: 07/14/2024]
Abstract
This paper explores the latest advancements in aerogel technology for antimicrobial therapy, revealing their interesting capacity that could improve the current medical approaches for antimicrobial treatments. Aerogels are attractive matrices because they can have an antimicrobial effect on their own, but they can also provide efficient delivery of antimicrobial compounds. Their interesting properties, such as high porosity, ultra-lightweight, and large surface area, make them suitable for such applications. The fundamentals of aerogels and mechanisms of action are discussed. The paper also highlights aerogels' importance in addressing current pressing challenges related to infection management, like the limited drug delivery alternatives and growing resistance to antimicrobial agents. It also covers the potential applications of aerogels in antimicrobial therapy and their possible limitations.
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Affiliation(s)
- George-Alexandru Croitoru
- Faculty of Dental Medicine, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania; (G.-A.C.); (C.-L.N.)
| | - Diana-Cristina Pîrvulescu
- Faculty of Chemical Engineering and Biotechnology, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania; (D.-C.P.); (A.-G.N.); (A.M.G.)
| | - Adelina-Gabriela Niculescu
- Faculty of Chemical Engineering and Biotechnology, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania; (D.-C.P.); (A.-G.N.); (A.M.G.)
- Research Institute of the University of Bucharest—ICUB, University of Bucharest, 050657 Bucharest, Romania
| | - Marius Rădulescu
- Faculty of Chemical Engineering and Biotechnology, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania; (D.-C.P.); (A.-G.N.); (A.M.G.)
| | - Alexandru Mihai Grumezescu
- Faculty of Chemical Engineering and Biotechnology, National University of Science and Technology Politehnica Bucharest, 011061 Bucharest, Romania; (D.-C.P.); (A.-G.N.); (A.M.G.)
- Research Institute of the University of Bucharest—ICUB, University of Bucharest, 050657 Bucharest, Romania
| | - Carmen-Larisa Nicolae
- Faculty of Dental Medicine, Carol Davila University of Medicine and Pharmacy, 050474 Bucharest, Romania; (G.-A.C.); (C.-L.N.)
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3
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Alfei S, Giordani P, Zuccari G. Synthesis and Physicochemical Characterization of Gelatine-Based Biodegradable Aerogel-like Composites as Possible Scaffolds for Regenerative Medicine. Int J Mol Sci 2024; 25:5009. [PMID: 38732231 PMCID: PMC11084852 DOI: 10.3390/ijms25095009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2024] [Revised: 04/21/2024] [Accepted: 04/30/2024] [Indexed: 05/13/2024] Open
Abstract
Regenerative medicine is an interdisciplinary field aiming at restoring pathologically damaged tissues and whole organs by cell transplantation in combination with proper supporting scaffolds. Gelatine-based ones are very attractive due to their biocompatibility, rapid biodegradability, and lack of immunogenicity. Gelatine-based composite hydrogels, containing strengthening agents to improve their modest mechanical properties, have been demonstrated to act as extracellular matrices (ECMs), thus playing a critical role in "organ manufacturing". Inspired by the lysyl oxidase (LO)-mediated process of crosslinking, which occurs in nature to reinforce collagen, we have recently developed a versatile protocol to crosslink gelatine B (Gel B) in the presence or absence of LO, using properly synthesized polystyrene- and polyacrylic-based copolymers containing the amine or aldehyde groups needed for crosslinking reactions. Here, following the developed protocol with slight modifications, we have successfully crosslinked Gel B in different conditions, obtaining eight out of nine compounds in high yield (57-99%). The determined crosslinking degree percentage (CP%) evidenced a high CP% for compounds obtained in presence of LO and using the styrenic amine-containing (CP5/DMAA) and acrylic aldehyde-containing (CPMA/DMAA) copolymers as crosslinking agents. ATR-FTIR analyses confirmed the chemical structure of all compounds, while optical microscopy demonstrated cavernous, crater-like, and labyrinth-like morphologies and cavities with a size in the range 15-261 µm. An apparent density in the range 0.10-0.45 g/cm3 confirmed the aerogel-like structure of most samples. Although the best biodegradation profile was observed for the sample obtained using 10% CP5/DMAA (M3), high swelling and absorption properties, high porosity, and good biodegradation profiles were also observed for samples obtained using the 5-10% CP5/DMAA (M4, 5, 6) and 20% CPMA/DMAA (M9) copolymers. Collectively, in this work of synthesis and physicochemical characterization, new aerogel-like composites have been developed and, based on their characteristics, which fit well within the requirements for TE, five candidates (M3, M4, M5, M6, and M9) suitable for future biological experiments on cell adhesion, infiltration and proliferation, to confirm their effective functioning, have been identified.
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Affiliation(s)
- Silvana Alfei
- Department of Pharmacy, University of Genoa, Viale Cembrano, 16148 Genoa, Italy
| | - Paolo Giordani
- Department of Pharmacy, University of Genoa, Viale Cembrano, 16148 Genoa, Italy
| | - Guendalina Zuccari
- Department of Pharmacy, University of Genoa, Viale Cembrano, 16148 Genoa, Italy
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4
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Ursaki V, Braniste T, Zalamai V, Rusu E, Ciobanu V, Morari V, Podgornii D, Ricci PC, Adelung R, Tiginyanu I. Aero-ZnS prepared by physical vapor transport on three-dimensional networks of sacrificial ZnO microtetrapods. BEILSTEIN JOURNAL OF NANOTECHNOLOGY 2024; 15:490-499. [PMID: 38711580 PMCID: PMC11070954 DOI: 10.3762/bjnano.15.44] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Accepted: 04/15/2024] [Indexed: 05/08/2024]
Abstract
Aeromaterials represent a class of increasingly attractive materials for various applications. Among them, aero-ZnS has been produced by hydride vapor phase epitaxy on sacrificial ZnO templates consisting of networks of microtetrapods and has been proposed for microfluidic applications. In this paper, a cost-effective technological approach is proposed for the fabrication of aero-ZnS by using physical vapor transport with Sn2S3 crystals and networks of ZnO microtetrapods as precursors. The morphology of the produced material is investigated by scanning electron microscopy (SEM), while its crystalline and optical qualities are assessed by X-ray diffraction (XRD) analysis and photoluminescence (PL) spectroscopy, respectively. We demonstrate possibilities for controlling the composition and the crystallographic phase content of the prepared aerogels by the duration of the technological procedure. A scheme of deep energy levels and electronic transitions in the ZnS skeleton of the aeromaterial was deduced from the PL analysis, suggesting that the produced aerogel is a potential candidate for photocatalytic and sensor applications.
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Affiliation(s)
- Veaceslav Ursaki
- National Center for Materials Study and Testing, Technical University of Moldova, Chisinau, Republic of Moldova
- Academy of Sciences of Moldova, Chisinau, Republic of Moldova
| | - Tudor Braniste
- National Center for Materials Study and Testing, Technical University of Moldova, Chisinau, Republic of Moldova
| | - Victor Zalamai
- National Center for Materials Study and Testing, Technical University of Moldova, Chisinau, Republic of Moldova
| | - Emil Rusu
- Institute of Electronic Engineering and Nanotechnology „D. Ghitu”, Technical University of Moldova, Chisinau, Republic of Moldova
| | - Vladimir Ciobanu
- National Center for Materials Study and Testing, Technical University of Moldova, Chisinau, Republic of Moldova
| | - Vadim Morari
- Institute of Electronic Engineering and Nanotechnology „D. Ghitu”, Technical University of Moldova, Chisinau, Republic of Moldova
| | - Daniel Podgornii
- Institute of Applied Physics, State University of Moldova, Chisinau, Republic of Moldova
| | | | - Rainer Adelung
- Department of Material Science, Kiel University, Kiel, Germany
| | - Ion Tiginyanu
- National Center for Materials Study and Testing, Technical University of Moldova, Chisinau, Republic of Moldova
- Academy of Sciences of Moldova, Chisinau, Republic of Moldova
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5
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Lee D, Noh J, Moon SY, Shin TJ, Choi YK, Park J. Pectin Nanoporous Structures Prepared via Salt-Induced Phase Separation and Ambient Azeotropic Evaporation Processes. Biomacromolecules 2024; 25:1709-1723. [PMID: 38377481 DOI: 10.1021/acs.biomac.3c01230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
Polysaccharide nanoporous structures are suitable for various applications, ranging from biomedical scaffolds to adsorption materials, owing to their biocompatibility and large surface areas. Pectin, in particular, can create 3D nanoporous structures in aqueous solutions by binding with calcium cations and creating nanopores by phase separation; this process involves forming hydrogen bonds between alcohols and pectin chains in water and alcohol mixtures and the resulting penetration of alcohols into calcium-bound pectin gels. However, owing to the dehydration and condensation of polysaccharide chains during drying, it has proven to be challenging to maintain the 3D nanoporous structure without using a freeze-drying process or supercritical fluid. Herein, we report a facile method for creating polysaccharide-based xerogels, involving the co-evaporation of water with a nonsolvent (e.g., a low-molecular-weight hydrophobic alcohol such as isopropyl or n-propyl alcohol) at ambient conditions. Experiments and coarse-grained molecular dynamics simulations confirmed that salt-induced phase separation and hydrogen bonding between hydrophobic alcohols and pectin chains were the dominant processes in mixtures of pectin, water, and hydrophobic alcohols. Furthermore, the azeotropic evaporation of water and alcohol mixed in approximately 1:1 molar ratios was maintained during the natural drying process under ambient conditions, preventing the hydration and aggregation of the hydrophilic pectin chains. These results introduce a simple and convenient process to produce 3D polysaccharide xerogels under ambient conditions.
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Affiliation(s)
- Dabin Lee
- Department of Chemical Engineering, Department of Intelligent Energy and Industry, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Juran Noh
- Department of Material Science and Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Su-Young Moon
- Gas & Carbon Convergent Research Center, Chemical & Process Technology, Korea Research Institute of Chemical Technology, Daejeon 34114, Republic of Korea
| | - Tae Joo Shin
- UNIST Central Research Facilities & School of Natural Science, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Yeol Kyo Choi
- Departments of Biological Sciences and Chemistry, Lehigh University, Bethlehem, Pennsylvania 18015, United States
| | - Juhyun Park
- Department of Chemical Engineering, Department of Intelligent Energy and Industry, Chung-Ang University, Seoul 06974, Republic of Korea
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6
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Almeida CMR, Merillas B, Pontinha ADR. Trends on Aerogel-Based Biosensors for Medical Applications: An Overview. Int J Mol Sci 2024; 25:1309. [PMID: 38279307 PMCID: PMC10816975 DOI: 10.3390/ijms25021309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 01/01/2024] [Accepted: 01/18/2024] [Indexed: 01/28/2024] Open
Abstract
Aerogels are unique solid-state materials composed of interconnected 3D solid networks and a large number of air-filled pores. This structure leads to extended structural characteristics as well as physicochemical properties of the nanoscale building blocks to macroscale, and integrated typical features of aerogels, such as high porosity, large surface area, and low density, with specific properties of the various constituents. Due to their combination of excellent properties, aerogels attract much interest in various applications, ranging from medicine to construction. In recent decades, their potential was exploited in many aerogels' materials, either organic, inorganic or hybrid. Considerable research efforts in recent years have been devoted to the development of aerogel-based biosensors and encouraging accomplishments have been achieved. In this work, recent (2018-2023) and ground-breaking advances in the preparation, classification, and physicochemical properties of aerogels and their sensing applications are presented. Different types of biosensors in which aerogels play a fundamental role are being explored and are collected in this manuscript. Moreover, the current challenges and some perspectives for the development of high-performance aerogel-based biosensors are summarized.
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Affiliation(s)
- Cláudio M. R. Almeida
- University of Coimbra, CERES, Department of Chemical Engineering, Rua Silvio Lima, 3030-790 Coimbra, Portugal; (C.M.R.A.); (B.M.)
- LAQV-REQUIMTE, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
| | - Beatriz Merillas
- University of Coimbra, CERES, Department of Chemical Engineering, Rua Silvio Lima, 3030-790 Coimbra, Portugal; (C.M.R.A.); (B.M.)
- Cellular Materials Laboratory (CellMat), Condensed Matter Physics Department, Faculty of Science, University of Valladolid, Campus Miguel Delibes, Paseo de Belén 7, 47011 Valladolid, Spain
| | - Ana Dora Rodrigues Pontinha
- University of Coimbra, ISISE, ARISE, Department of Civil Engineering, 3030-788 Coimbra, Portugal
- SeaPower, Associação Para o Desenvolvimento da Economia do Mar, Rua Das Acácias, N° 40A, Parque Industrial Da Figueira Da Foz, 3090-380 Figueira Da Foz, Portugal
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7
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Fijalkowski M, Coufal R, Ali A, Adach K, Petrik S, Bu H, Karl CW. Flexible Hybrid and Single-Component Aerogels: Synthesis, Characterization, and Applications. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:16760-16775. [PMID: 37955990 PMCID: PMC10688192 DOI: 10.1021/acs.langmuir.3c01811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Revised: 10/14/2023] [Accepted: 10/16/2023] [Indexed: 11/15/2023]
Abstract
The inherent disadvantages of traditional nonflexible aerogels, such as high fragility and moisture sensitivity, severely restrict their applications. To address these issues, different techniques have been used to incorporate the flexibility in aerogel materials; hence, the term "flexible aerogels" was introduced. In the case of introducing flexibility, the organic part is induced with the inorganic part (flexible hybrid aerogels). Additionally, some more modern research is also available in the fabrication of hybrid flexible aerogels (based on organic-organic), the combination of two organic polymers. Moreover, a new type (single-component flexible aerogels) are quite a new category composed of only single materials; this category is very limited, charming to make the flexible aerogels pure from single polymers. The present review is composed of modern techniques and studies available to fabricate hybrid and single-component flexible aerogels. Their synthesis, factors affecting their parameters, and limitations associated with them are explained deeply. Moreover, a comparative analysis of drying methods and their effectiveness in the development of structures are described in detail. The further sections explain their properties and characterization methods. Eventually, their applications in a variety of multifunctional fields are covered. This article will support to introduce the roadmap pointing to a future direction in the production of the single-component flexible aerogel materials and their applications.
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Affiliation(s)
- Mateusz Fijalkowski
- Department
of Advanced Materials, Institute for Nanomaterials, Advanced Technologies
and Innovation (CXI), Technical University
of Liberec, 461 17 Liberec, Czech Republic
| | - Radek Coufal
- Department
of Science and Research, Faculty of Health Studies, Technical University of Liberec, 461 17 Liberec, Czech Republic
| | - Azam Ali
- Department
of Material Sciences, Technical University
of Liberec, 461 17 Liberec, Czech Republic
| | - Kinga Adach
- Department
of Advanced Materials, Institute for Nanomaterials, Advanced Technologies
and Innovation (CXI), Technical University
of Liberec, 461 17 Liberec, Czech Republic
| | - Stanislav Petrik
- Department
of Advanced Materials, Institute for Nanomaterials, Advanced Technologies
and Innovation (CXI), Technical University
of Liberec, 461 17 Liberec, Czech Republic
| | - Huaitian Bu
- Department
of Materials and Nanotechnology, SINTEF
Industry, Forskningsveien 1, 0373 Oslo, Norway
| | - Christian W. Karl
- Department
of Materials and Nanotechnology, SINTEF
Industry, Forskningsveien 1, 0373 Oslo, Norway
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Luo Z, Zhang X, Zhao J, Bai R, Wang C, Wang Y, Zhao D, Yan X. Mechanically Interlocked [2]Rotaxane Aerogels with Tunable Morphologies and Mechanical Properties. Angew Chem Int Ed Engl 2023; 62:e202306489. [PMID: 37506278 DOI: 10.1002/anie.202306489] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 07/18/2023] [Accepted: 07/28/2023] [Indexed: 07/30/2023]
Abstract
Mechanical bonds have been utilized as promising motifs to construct mechanically interlocked aerogels (MIAs) with mechanical adaptivity and multifunctionality. However, fabricating such aerogels with not only precise chemical structures but also dynamic features remains challenging. Herein, we present MIAs carrying dense [2]rotaxane units, which bestow both the stability and flexibility of the aerogel network. Owing to the stable chemical structure of a [2]rotaxane, MIAs possessing a precise and full-scale mechanically interlocked network could be fabricated with the aid of diverse solvents. In addition, the dynamic nature of the [2]rotaxane resulted in morphologies and mechanical performances of the MIAs that can be dramatically modulated under chemical stimuli. We hope that the structure-property relationship in MIAs will facilitate the development of mechanically interlocked materials and provide novel opportunities toward constructing smart materials with multifunctionalities.
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Affiliation(s)
- Zhen Luo
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Xinhai Zhang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Jun Zhao
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Ruixue Bai
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Chunyu Wang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Yuanhao Wang
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Dong Zhao
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
| | - Xuzhou Yan
- School of Chemistry and Chemical Engineering, Frontiers Science Center for Transformative Molecules, Shanghai Jiao Tong University, Shanghai, 200240, P. R. China
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Bakhori NM, Ismail Z, Hassan MZ, Dolah R. Emerging Trends in Nanotechnology: Aerogel-Based Materials for Biomedical Applications. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1063. [PMID: 36985957 PMCID: PMC10058649 DOI: 10.3390/nano13061063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2023] [Revised: 03/11/2023] [Accepted: 03/13/2023] [Indexed: 06/18/2023]
Abstract
At present, aerogel is one of the most interesting materials globally. The network of aerogel consists of pores with nanometer widths, which leads to a variety of functional properties and broad applications. Aerogel is categorized as inorganic, organic, carbon, and biopolymers, and can be modified by the addition of advanced materials and nanofillers. Herein, this review critically discusses the basic preparation of aerogel from the sol-gel reaction with derivation and modification of a standard method to produce various aerogels for diverse functionalities. In addition, the biocompatibility of various types of aerogels were elaborated. Then, biomedical applications of aerogel were focused on this review as a drug delivery carrier, wound healing agent, antioxidant, anti-toxicity, bone regenerative, cartilage tissue activities and in dental fields. The clinical status of aerogel in the biomedical sector is shown to be similarly far from adequate. Moreover, due to their remarkable properties, aerogels are found to be preferably used as tissue scaffolds and drug delivery systems. The advanced studies in areas including self-healing, additive manufacturing (AM) technology, toxicity, and fluorescent-based aerogel are crucially important and are further addressed.
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Affiliation(s)
- Noremylia Mohd Bakhori
- Faculty of Medicine and Health Sciences, Universiti Sains Islam Malaysia, Persiaran Ilmu, Putra Nilai, Nilai 71800, Negeri Sembilan, Malaysia
| | - Zarini Ismail
- Faculty of Medicine and Health Sciences, Universiti Sains Islam Malaysia, Persiaran Ilmu, Putra Nilai, Nilai 71800, Negeri Sembilan, Malaysia
| | - Mohamad Zaki Hassan
- Razak Faculty of Technology and Informatics, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, Kuala Lumpur 54100, Selangor, Malaysia
| | - Rozzeta Dolah
- Department of Chemical Engineering, Universiti Teknologi Malaysia, Jalan Sultan Yahya Petra, Kuala Lumpur 54100, Selangor, Malaysia
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10
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Huang T, Long Y, Dong Z, Hua Q, Niu J, Dai X, Wang J, Xiao J, Zhai J, Hu W. Ultralight, Elastic, Hybrid Aerogel for Flexible/Wearable Piezoresistive Sensor and Solid-Solid/Gas-Solid Coupled Triboelectric Nanogenerator. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2204519. [PMID: 36253149 PMCID: PMC9731684 DOI: 10.1002/advs.202204519] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/20/2022] [Indexed: 05/10/2023]
Abstract
Aerogels have been attracting wide attentions in flexible/wearable electronics because of their light weight, excellent flexibility, and electrical conductivity. However, multifunctional aerogel-based flexible/wearable electronics for human physiological/motion monitoring, and energy harvest/supply for mobile electronics, have been seldom reported yet. In this study, a kind of hybrid aerogel (GO/CNT HA) based on graphene oxide (GO) and carboxylated multiwalled carbon nanotubes (CMWCNTs) is prepared which can not only used as piezoresistive sensors for human motion and physiological signal detections, but also as high performance triboelectric nanogenerator (TENG) coupled with both solid-solid and gas-solid contact electrifications (CE). The repeatedly loading-unloading tests with 20 000 cycles exhibit its high and ultrastable piezoresistive sensor performances. Moreover, when the obtained aerogel is used as the electrode of a TENG, high electric output performance is produced due to the synergistic effect of solid-solid, and gas-solid interface CEs (3D electrification: solid-solid interface CE between the two solid electrification layers; gas-solid interface CE between the inner surface of GO/CNT HA and the air filled in the aerogel pores). This kind of aerogel promises good applications for human physiological/motion monitoring and energy harvest/supply in flexible/wearable electronics such as piezoresistive sensors and flexible TENG.
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Affiliation(s)
- Tianci Huang
- Center on Nanoenergy ResearchSchool of Physical Science and TechnologyGuangxi UniversityNanning530004China
- CAS Center for Excellence in NanoscienceBeijing Key Laboratory of Micro‐nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing101400China
| | - Yong Long
- CAS Center for Excellence in NanoscienceBeijing Key Laboratory of Micro‐nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing101400China
- School of Nanoscience and TechnologyUniversity of Chinese Academy of SciencesBeijing100049China
| | - Zilong Dong
- Center on Nanoenergy ResearchSchool of Physical Science and TechnologyGuangxi UniversityNanning530004China
- CAS Center for Excellence in NanoscienceBeijing Key Laboratory of Micro‐nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing101400China
| | - Qilin Hua
- CAS Center for Excellence in NanoscienceBeijing Key Laboratory of Micro‐nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing101400China
- School of Nanoscience and TechnologyUniversity of Chinese Academy of SciencesBeijing100049China
| | - Jianan Niu
- CAS Center for Excellence in NanoscienceBeijing Key Laboratory of Micro‐nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing101400China
- School of Nanoscience and TechnologyUniversity of Chinese Academy of SciencesBeijing100049China
| | - Xinhuan Dai
- CAS Center for Excellence in NanoscienceBeijing Key Laboratory of Micro‐nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing101400China
- School of Nanoscience and TechnologyUniversity of Chinese Academy of SciencesBeijing100049China
| | - Jiangwen Wang
- CAS Center for Excellence in NanoscienceBeijing Key Laboratory of Micro‐nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing101400China
- School of Nanoscience and TechnologyUniversity of Chinese Academy of SciencesBeijing100049China
| | - Junfeng Xiao
- School of Electronic Communication TechnologyShenzhen Institute of Information TechnologyShenzhen518172China
| | - Junyi Zhai
- Center on Nanoenergy ResearchSchool of Physical Science and TechnologyGuangxi UniversityNanning530004China
- CAS Center for Excellence in NanoscienceBeijing Key Laboratory of Micro‐nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing101400China
- School of Nanoscience and TechnologyUniversity of Chinese Academy of SciencesBeijing100049China
| | - Weiguo Hu
- Center on Nanoenergy ResearchSchool of Physical Science and TechnologyGuangxi UniversityNanning530004China
- CAS Center for Excellence in NanoscienceBeijing Key Laboratory of Micro‐nano Energy and SensorBeijing Institute of Nanoenergy and NanosystemsChinese Academy of SciencesBeijing101400China
- School of Nanoscience and TechnologyUniversity of Chinese Academy of SciencesBeijing100049China
- School of Electronic Communication TechnologyShenzhen Institute of Information TechnologyShenzhen518172China
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11
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Qiao Z, Liu X, Heng K, Huang F. Novel bridged polysilsesquioxane aerogels with great mechanical properties and hydrophobicity. E-POLYMERS 2022. [DOI: 10.1515/epoly-2022-0077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Abstract
Two novel bridged silsesquioxane (BSQ) precursors, 1,4-bis(trimethoxysilylpropylthioethenylphenoxy)benzene and 1,3-bis(trimethoxysilylpropylthioethenyl)benzene, were synthesized from arylacetylenes and 3-mercaptopropyltrimethoxysilane through the thiol-yne click reaction. Then, bridged polysilsesquioxane aerogels were prepared from BSQ precursors alone or together with tetramethoxysilane (TMOS) as a co-precursor through the sol–gel method. The resulted aerogels were characterized by scanning electron microscopy, mercury intrusion porosimetry, thermogravimetric analysis, transient hot-wire method, and water contact angle tests. Their mechanical properties were evaluated by unidirectional compression tests. The properties of the aerogels are strongly affected by precursor content, mass ratio of BSQ to TMOS, and the structures of BSQ. The obtained aerogels do not break even when compressive strain is up to 55% and show high compressive modulus (≥2.46 MPa) and hydrophobicity (water contact angle ≥130°).
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Affiliation(s)
- Zhiyao Qiao
- Key Laboratory for Specially Functional Materials and Related Technology (Ministry of Education), School of Materials Science and Engineering, East China University of Science and Technology , Shanghai , 200237 , China
| | - Xiaotian Liu
- Key Laboratory for Specially Functional Materials and Related Technology (Ministry of Education), School of Materials Science and Engineering, East China University of Science and Technology , Shanghai , 200237 , China
| | - Kejie Heng
- Key Laboratory for Specially Functional Materials and Related Technology (Ministry of Education), School of Materials Science and Engineering, East China University of Science and Technology , Shanghai , 200237 , China
| | - Farong Huang
- Key Laboratory for Specially Functional Materials and Related Technology (Ministry of Education), School of Materials Science and Engineering, East China University of Science and Technology , Shanghai , 200237 , China
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12
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Falua KJ, Pokharel A, Babaei-Ghazvini A, Ai Y, Acharya B. Valorization of Starch to Biobased Materials: A Review. Polymers (Basel) 2022; 14:polym14112215. [PMID: 35683888 PMCID: PMC9183024 DOI: 10.3390/polym14112215] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 05/11/2022] [Accepted: 05/17/2022] [Indexed: 12/17/2022] Open
Abstract
Many concerns are being expressed about the biodegradability, biocompatibility, and long-term viability of polymer-based substances. This prompted the quest for an alternative source of material that could be utilized for various purposes. Starch is widely used as a thickener, emulsifier, and binder in many food and non-food sectors, but research focuses on increasing its application beyond these areas. Due to its biodegradability, low cost, renewability, and abundance, starch is considered a "green path" raw material for generating porous substances such as aerogels, biofoams, and bioplastics, which have sparked an academic interest. Existing research has focused on strategies for developing biomaterials from organic polymers (e.g., cellulose), but there has been little research on its polysaccharide counterpart (starch). This review paper highlighted the structure of starch, the context of amylose and amylopectin, and the extraction and modification of starch with their processes and limitations. Moreover, this paper describes nanofillers, intelligent pH-sensitive films, biofoams, aerogels of various types, bioplastics, and their precursors, including drying and manufacturing. The perspectives reveal the great potential of starch-based biomaterials in food, pharmaceuticals, biomedicine, and non-food applications.
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Affiliation(s)
- Kehinde James Falua
- Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada; (K.J.F.); (A.P.); (A.B.-G.)
- Department of Agricultural & Biosystems Engineering, University of Ilorin, Ilorin PMB 1515, Nigeria
| | - Anamol Pokharel
- Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada; (K.J.F.); (A.P.); (A.B.-G.)
| | - Amin Babaei-Ghazvini
- Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada; (K.J.F.); (A.P.); (A.B.-G.)
| | - Yongfeng Ai
- Department of Food and Bioproduct Sciences, University of Saskatchewan, 51 Campus Drive, Saskatoon, SK S7N 5A8, Canada;
| | - Bishnu Acharya
- Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada; (K.J.F.); (A.P.); (A.B.-G.)
- Correspondence:
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13
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Zhang SN, Pang HQ, Fan TH, Ye Q, Cai QL, Wu X. Thermal Insulation Performance of SiC-Doped Silica Aerogels under Large Temperature and Air Pressure Differences. Gels 2022; 8:gels8050320. [PMID: 35621618 PMCID: PMC9141499 DOI: 10.3390/gels8050320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 05/10/2022] [Accepted: 05/14/2022] [Indexed: 01/27/2023] Open
Abstract
Silica aerogel composite is an excellent thermal insulator for spacecraft under high-temperature and complex air environments. This study intends to evaluate SiC-doped silica aerogel’s thermal insulation performance under large temperature and air pressure differences. In this paper, the hot surface’s temperature response of SiC-doped silica aerogel with different content was studied at significant temperature differences (ΔT) when pressure changes instantaneously. Their thermal insulation performance was evaluated by analyzing the influence of pressure gradients on the unsteady-state heat transfer. When the cold surface’s temperature of the specimen keeps constant at 15 °C and ΔT = 171~912 K, the results demonstrate that the correlative thermal conductivities of silica aerogel with 1% and 5.84% SiC are 0.02223~0.04077 W·m−1·K−1 at P ≈ 10 Pa and 0.03165~0.04665 W·m−1·K−1 at P = 1 atm, respectively. The aerogel composite with 0% SiC showed the best thermal insulation performance at ΔT < 200 K and P ≈ 10 Pa, while the aerogel with 5.84% SiC became the best at ΔT > 700 K and P = 1 atm. In addition, the transient pressure decreases will significantly impair the heat transfer of the gas inside the aerogel, thereby weakening the gaseous thermal conductivity and improving the thermal insulation performance.
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Affiliation(s)
- Sheng-Nan Zhang
- College of Energy, Soochow University, 333 East Ganjiang Road, Suzhou 215031, China; (S.-N.Z.); (T.-H.F.); (Q.Y.); (Q.-L.C.)
| | - Hao-Qiang Pang
- School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
- Correspondence: (H.-Q.P.); (X.W.)
| | - Ting-Hui Fan
- College of Energy, Soochow University, 333 East Ganjiang Road, Suzhou 215031, China; (S.-N.Z.); (T.-H.F.); (Q.Y.); (Q.-L.C.)
| | - Qing Ye
- College of Energy, Soochow University, 333 East Ganjiang Road, Suzhou 215031, China; (S.-N.Z.); (T.-H.F.); (Q.Y.); (Q.-L.C.)
| | - Qi-Lin Cai
- College of Energy, Soochow University, 333 East Ganjiang Road, Suzhou 215031, China; (S.-N.Z.); (T.-H.F.); (Q.Y.); (Q.-L.C.)
| | - Xi Wu
- College of Energy, Soochow University, 333 East Ganjiang Road, Suzhou 215031, China; (S.-N.Z.); (T.-H.F.); (Q.Y.); (Q.-L.C.)
- Correspondence: (H.-Q.P.); (X.W.)
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