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Indumathy B, Sathiyanathan P, Prasad G, Reza MS, Prabu AA, Kim H. A Comprehensive Review on Processing, Development and Applications of Organofunctional Silanes and Silane-Based Hyperbranched Polymers. Polymers (Basel) 2023; 15:polym15112517. [PMID: 37299316 DOI: 10.3390/polym15112517] [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: 02/28/2023] [Revised: 05/04/2023] [Accepted: 05/12/2023] [Indexed: 06/12/2023] Open
Abstract
Since the last decade, hyperbranched polymers (HBPs) have gained wider theoretical interest and practical applications in sensor technology due to their ease of synthesis, highly branched structure but dimensions within nanoscale, a larger number of modified terminal groups and lowering of viscosity in polymer blends even at higher HBP concentrations. Many researchers have reported the synthesis of HBPs using different organic-based core-shell moieties. Interestingly, silanes, as organic-inorganic hybrid modifiers of HBP, are of great interest as they resulted in a tremendous improvement in HBP properties like increasing thermal, mechanical and electrical properties compared to that of organic-only moieties. This review focuses on the research progress in organofunctional silanes, silane-based HBPs and their applications since the last decade. The effect of silane type, its bi-functional nature, its influence on the final HBP structure and the resultant properties are covered in detail. Methods to enhance the HBP properties and challenges that need to be overcome in the near future are also discussed.
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Affiliation(s)
- Balaraman Indumathy
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore 632 014, Tamil Nadu, India
| | - Ponnan Sathiyanathan
- Department of Advanced Materials Engineering for Information & Electronics, College of Engineering, Kyung Hee University, Yongin-si 17104, Republic of Korea
| | - Gajula Prasad
- School of Energy, Materials and Chemical Engineering, Korea University of Technology and Education, 1600, Cheonan-si 31253, Republic of Korea
| | - Mohammad Shamim Reza
- Department of Advanced Materials Engineering for Information & Electronics, College of Engineering, Kyung Hee University, Yongin-si 17104, Republic of Korea
| | - Arun Anand Prabu
- Department of Chemistry, School of Advanced Sciences, Vellore Institute of Technology, Vellore 632 014, Tamil Nadu, India
| | - Hongdoo Kim
- Department of Advanced Materials Engineering for Information & Electronics, College of Engineering, Kyung Hee University, Yongin-si 17104, Republic of Korea
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Biocompatible Silica-Polyethylene Glycol-Based Composites for Immobilization of Microbial Cells by Sol-Gel Synthesis. Polymers (Basel) 2023; 15:polym15020458. [PMID: 36679338 PMCID: PMC9866734 DOI: 10.3390/polym15020458] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 01/07/2023] [Accepted: 01/11/2023] [Indexed: 01/18/2023] Open
Abstract
Biocatalysts based on the methylotrophic yeast Ogataea polymorpha VKM Y-2559 immobilized in polymer-based nanocomposites for the treatment of methanol-containing wastewater were developed. The organosilica composites with different matrix-to-filler ratios derived from TEOS/MTES in the presence of PEG (SPEG-composite) and from silicon-polyethylene glycol (STPEG-composite) differ in the structure of the silicate phase and its distribution in the composite matrix. Methods of fluorescent and scanning microscopy first confirmed the formation of an organosilica shell around living yeast cells during sol-gel bio-STPEG-composite synthesis. Biosensors based on the yeast cells immobilized in STPEG- and SPEG-composites are characterized by effective operation: the coefficient of sensitivity is 0.85 ± 0.07 mgO2 × min-1 × mmol-1 and 0.87 ± 0.05 mgO2 × min-1 × mmol-1, and the long-term stability is 10 and 15 days, respectively. The encapsulated microbial cells are protected from UV radiation and the toxic action of heavy metal ions. Biofilters based on the developed biocatalysts are characterized by high effectiveness in the utilization of methanol-rich wastewater-their oxidative power reached 900 gO2/(m3 × cycle), and their purification degree was up to 60%.
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Zhang C, Su R, Guo Y, Li D, Zhao J, Zhao Y, Yu T. Phenanthroimidazole/carbazole and phenanthroimidazole/ phenothiazine hybrids with alkoxyorganosilane functional groups as blue emitting materials. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2022.133062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Light-to-Heat Converting ECM-Mimetic Nanofiber Scaffolds for Neuronal Differentiation and Neurite Outgrowth Guidance. NANOMATERIALS 2022; 12:nano12132166. [PMID: 35808000 PMCID: PMC9268234 DOI: 10.3390/nano12132166] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 06/18/2022] [Accepted: 06/22/2022] [Indexed: 11/18/2022]
Abstract
The topological cues of fibrous scaffolds (in particular extracellular matrix (ECM)-mimetic nanofibers) have already proven to be a powerful tool for influencing neuronal morphology and behavior. Remote photothermal optical treatment provides additional opportunities for neuronal activity regulation. A combination of these approaches can provide “smart” 3D scaffolds for efficient axon guidance and neurite growth. In this study we propose two alternative approaches for obtaining biocompatible photothermal scaffolds: surface coating of nylon nanofibers with light-to-heat converting nanoparticles and nanoparticle incorporation inside the fibers. We have determined photoconversion efficiency of fibrous nanomaterials under near infrared (NIR) irradiation, as well as biocompatible photothermal treatment parameters. We also measured photo-induced intracellular heating upon contact of cells with a plasmonic surface. In the absence of NIR stimulation, our fibrous scaffolds with a fiber diameter of 100 nm induced an increase in the proportion of β3-tubulin positive cells, while thermal stimulation of neuroblastoma cells on nanoparticles-decorated scaffolds enhanced neurite outgrowth and promoted neuronal maturation. We demonstrate that contact guidance decorated fibers can stimulate directional growth of processes of differentiated neural cells. We studied the impact of nanoparticles on the surface of ECM-mimetic scaffolds on neurite elongation and axonal branching of rat hippocampal neurons, both as topographic cues and as local heat sources. We show that decorating the surface of nanofibers with nanoparticles does not affect the orientation of neurites, but leads to strong branching, an increase in the number of neurites per cell, and neurite elongation, which is independent of NIR stimulation. The effect of photothermal stimulation is most pronounced when cultivating neurons on nanofibers with incorporated nanoparticles, as compared to nanoparticle-coated fibers. The resulting light-to-heat converting 3D materials can be used as tools for controlled photothermal neuromodulation and as “smart” materials for reconstructive neurosurgery.
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Kamanina OA, Saverina EA, Rybochkin PV, Arlyapov VA, Vereshchagin AN, Ananikov VP. Preparation of Hybrid Sol-Gel Materials Based on Living Cells of Microorganisms and Their Application in Nanotechnology. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:1086. [PMID: 35407203 PMCID: PMC9000353 DOI: 10.3390/nano12071086] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/01/2022] [Accepted: 03/17/2022] [Indexed: 01/09/2023]
Abstract
Microorganism-cell-based biohybrid materials have attracted considerable attention over the last several decades. They are applied in a broad spectrum of areas, such as nanotechnologies, environmental biotechnology, biomedicine, synthetic chemistry, and bioelectronics. Sol-gel technology allows us to obtain a wide range of high-purity materials from nanopowders to thin-film coatings with high efficiency and low cost, which makes it one of the preferred techniques for creating organic-inorganic matrices for biocomponent immobilization. This review focuses on the synthesis and application of hybrid sol-gel materials obtained by encapsulation of microorganism cells in an inorganic matrix based on silicon, aluminum, and transition metals. The type of immobilized cells, precursors used, types of nanomaterials obtained, and their practical applications were analyzed in detail. In addition, techniques for increasing the microorganism effective time of functioning and the possibility of using sol-gel hybrid materials in catalysis are discussed.
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Affiliation(s)
- Olga A. Kamanina
- Tula State University, Lenin pr. 92, 300012 Tula, Russia; (O.A.K.); (E.A.S.); (P.V.R.); (V.A.A.)
| | - Evgeniya A. Saverina
- Tula State University, Lenin pr. 92, 300012 Tula, Russia; (O.A.K.); (E.A.S.); (P.V.R.); (V.A.A.)
| | - Pavel V. Rybochkin
- Tula State University, Lenin pr. 92, 300012 Tula, Russia; (O.A.K.); (E.A.S.); (P.V.R.); (V.A.A.)
| | - Vyacheslav A. Arlyapov
- Tula State University, Lenin pr. 92, 300012 Tula, Russia; (O.A.K.); (E.A.S.); (P.V.R.); (V.A.A.)
| | | | - Valentine P. Ananikov
- N. D. Zelinsky Institute of Organic Chemistry, Leninsky pr. 47, 119991 Moscow, Russia
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Lin S, Sheng X, Zhang X, Liu H, Luo C, Hou S, Li B, Chen X, Li Y, Xie F. Layered Double Hydroxides as Reusable Catalysts for Cyclocondensation of Amidines and Aminoalcohols: Access to Multi-functionalized Oxazolines. J Org Chem 2021; 87:1366-1376. [PMID: 34964647 DOI: 10.1021/acs.joc.1c02696] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
An efficient catalytic protocol based on reusable MgAl-layered double hydroxides has been developed for the synthesis of multi-functionalized oxazolines via the cyclocondensation of amidines and aminoalcohols. The developed method has a broad substrate scope and excellent functional group tolerance and uses a reusable catalyst. The catalyst can be conveniently recycled by filtration and reused for at least five times without obvious deactivation. Additionally, the selective ortho C-H silylation of oxazolines was performed using Ru(II) as the catalyst and triethyl silane as the silylating reagent, which proved to be a convenient and practical method for the synthesis of versatile organosilyl-functionalized oxazolines with advantageous biological and physical properties.
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Affiliation(s)
- Shizhuo Lin
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Xing Sheng
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Xiangyu Zhang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Haibo Liu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Chujun Luo
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Shuaishuai Hou
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Bin Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Xiuwen Chen
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Yibiao Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
| | - Feng Xie
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen 529020, China
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Tetour D, Paška T, Máková V, Nikendey Holubová B, Karpíšková J, Řezanka M, Brus J, Hodačová J. Cinchonine-based organosilica materials as heterogeneous catalysts of enantioselective alkene dihydroxylation. J Catal 2021. [DOI: 10.1016/j.jcat.2021.10.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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