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POSS and SSQ Materials in Dental Applications: Recent Advances and Future Outlooks. Int J Mol Sci 2023; 24:ijms24054493. [PMID: 36901923 PMCID: PMC10003367 DOI: 10.3390/ijms24054493] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/07/2023] [Accepted: 02/11/2023] [Indexed: 03/03/2023] Open
Abstract
Recently, silsesquioxanes (SSQ) and polyhedral oligomeric silsesquioxanes (POSS) have gained much interest in the area of biomaterials, mainly due to their intrinsic properties such as biocompatibility, complete non-toxicity, the ability to self-assemble and to form a porous structure, facilitating cell proliferation, creating a superhydrophobic surface, osteoinductivity, and ability to bind hydroxyapatite. All the above has resulted in new developments in medicine. However, the application of POSS-containing materials in dentistry is still at initial stage and deserves a systematic description to ensure future development. Significant problems, such as reduction of polymerization shrinkage, water absorption, hydrolysis rate, poor adhesion and strength, unsatisfactory biocompatibility, and corrosion resistance of dental alloys, can be addressed by the design of multifunctional POSS-containing materials. Because of the presence of silsesquioxanes, it is possible to obtain smart materials that allow the stimulation of phosphates deposition and repairing of micro-cracks in dental fillings. Hybrid composites result in materials exhibiting shape memory, as well as antibacterial, self-cleaning, and self-healing properties. Moreover, introducing POSS into polymer matrix allows for materials for bone reconstruction, and wound healing. This review covers the recent developments in the field of POSS application in dental materials and gives the future perspectives within a promising field of biomedical material science and chemical engineering.
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De Monléon Q, Banet P, Chikh L, Fichet O. Effects of pyromellitidiimide pattern on thermomechanical properties and thermal stability of silicone networks. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2022.110187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Forchetti Casarino A, Andrés Bortolato S, Casis N, Estenoz D, Spontón M. Novel Polybenzoxazine and Polybenzoxazine/Epoxy Thermosetting Copolymers containing Polysilsesquioxane Nanostructures for High-Performance Thermal Protection Systems. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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4
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Modified sulfonated polyphenylsulfone proton exchange membrane with enhanced fuel cell performance: A review. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.09.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Loman-Cortes P, Binte Huq T, Vivero-Escoto JL. Use of Polyhedral Oligomeric Silsesquioxane (POSS) in Drug Delivery, Photodynamic Therapy and Bioimaging. Molecules 2021; 26:molecules26216453. [PMID: 34770861 PMCID: PMC8588151 DOI: 10.3390/molecules26216453] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2021] [Revised: 10/15/2021] [Accepted: 10/22/2021] [Indexed: 01/18/2023] Open
Abstract
Polyhedral oligomeric silsesquioxanes (POSS) have attracted considerable attention in the design of novel organic-inorganic hybrid materials with high performance capabilities. Features such as their well-defined nanoscale structure, chemical tunability, and biocompatibility make POSS an ideal building block to fabricate hybrid materials for biomedical applications. This review highlights recent advances in the application of POSS-based hybrid materials, with particular emphasis on drug delivery, photodynamic therapy and bioimaging. The design and synthesis of POSS-based materials is described, along with the current methods for controlling their chemical functionalization for biomedical applications. We summarize the advantages of using POSS for several drug delivery applications. We also describe the current progress on using POSS-based materials to improve photodynamic therapies. The use of POSS for delivery of contrast agents or as a passivating agent for nanoprobes is also summarized. We envision that POSS-based hybrid materials have great potential for a variety of biomedical applications including drug delivery, photodynamic therapy and bioimaging.
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Affiliation(s)
- Paula Loman-Cortes
- Department of Chemistry, The University of North Carolina at Charlotte, Charlotte, NC 28223, USA; (P.L.-C.); (T.B.H.)
- Nanoscale Science Program, The University of North Carolina at Charlotte, Charlotte, NC 28223, USA
| | - Tamanna Binte Huq
- Department of Chemistry, The University of North Carolina at Charlotte, Charlotte, NC 28223, USA; (P.L.-C.); (T.B.H.)
- Nanoscale Science Program, The University of North Carolina at Charlotte, Charlotte, NC 28223, USA
| | - Juan L. Vivero-Escoto
- Department of Chemistry, The University of North Carolina at Charlotte, Charlotte, NC 28223, USA; (P.L.-C.); (T.B.H.)
- Nanoscale Science Program, The University of North Carolina at Charlotte, Charlotte, NC 28223, USA
- The Center for Biomedical Engineering and Science, The University of North Carolina at Charlotte, Charlotte, NC 28223, USA
- Correspondence: ; Tel.: +1-704-687-5239
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Maity R, Sepay N, Pramanik U, Jana K, Mukherjee S, Maity S, Mal D, Maity T, Samanta BC. Exploring the Noncovalent Interactions of the Dinuclear Cu(II) Schiff Base Complex with Bovine Serum Albumin and Cell Viability against the SiHa Cancer Cell Line. J Phys Chem B 2021; 125:11364-11373. [PMID: 34613719 DOI: 10.1021/acs.jpcb.1c05794] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
In the present study, a dinuclear bis(μ-acetate) dicopper(II) complex [Cu2L2(μ1.1-CH3COO-)2] has been synthesized from a tridentate NNO Schiff Base ligand L (L = 2,4-dibromo-6-((3-(methylamino)propylimino)methyl)phenol) and characterized by elemental, ultraviolet-visible (UV-vis), Fourier transform infrared (FTIR), 1H NMR, and electrospray ionization-mass spectrometry (ESI-MS) spectroscopic studies. The single-crystal X-ray structure, different noncovalent interactions, Hirshfeld surface analysis, and density functional theory (DFT) studies of the dinuclear complex were determined by crystallographic computational studies. The structural study exposed that the complex consists of the penta-coordinated double μ1.1-acetato-bridged dinuclear units of Cu(II), and it is a centrosymmetric dimer in which the center of inversion lies at the midpoint of two Cu(II) ions. Hirshfeld surface and DFT studies pointed out the probable potentiality of the crystal in prospective binding with the protein. This was experimentally verified by carrying out the binding interaction studies against bovine serum albumin (BSA) protein using various spectroscopic methods. It was observed that the copper(II) complex could strongly bind to BSA and could quench the intrinsic fluorescence of BSA. Further, the studied complex was appraised for cell viability studies against SiHa cancer cells. It is observed that cell viability increases with time, demonstrating the biocompatible nature of the complex.
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Affiliation(s)
- Ribhu Maity
- Department of Chemistry, Mugberia Gangadhar Mahavidyalaya, Bhupatinagar, Purba Medinipur 721425, West Bengal, India
| | - Nayim Sepay
- Department of Chemistry, Lady Brabourne College, Kolkata700017, West Bengal, India
| | - Ushasi Pramanik
- Department of Chemistry, IISER Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya Pradesh, India
| | - Kalyanmoy Jana
- Department of Chemistry, University of Kalyani, Kalyani 741235, West Bengal, India
| | - Saptarshi Mukherjee
- Department of Chemistry, IISER Bhopal, Bhopal Bypass Road, Bhauri, Bhopal 462066, Madhya Pradesh, India
| | - Swapan Maity
- School of Materials Science and Technology (SMST), Indian Institute of Technology (IIT), BHU, Varanasi 221005, India
| | - Dasarath Mal
- Department of Chemistry, Vijaygarh Jyotish Ray College, Jadavpur, Kolkata 700032, West Bengal, India
| | - Tithi Maity
- Department of Chemistry, Prabhat Kumar College, Purba Medinipur, Contai 721401, West Bengal, India
| | - Bidhan Chandra Samanta
- Department of Chemistry, Mugberia Gangadhar Mahavidyalaya, Bhupatinagar, Purba Medinipur 721425, West Bengal, India
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Zhu N, Qian F, Xu X, Wang M, Teng Q. Thermogravimetric Experiment of Urea at Constant Temperatures. MATERIALS 2021; 14:ma14206190. [PMID: 34683779 PMCID: PMC8539392 DOI: 10.3390/ma14206190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/11/2021] [Accepted: 10/14/2021] [Indexed: 11/23/2022]
Abstract
There are still many unsolved mysteries in the thermal decomposition process of urea. This paper studied the thermal decomposition process of urea at constant temperatures by the thermal gravimetric–mass spectrometry analysis method. The results show that there are three obvious stages of mass loss during the thermal decomposition process of urea, which is closely related to the temperature. When the temperature was below 160 °C, urea decomposition almost did not occur, and molten urea evaporated slowly. When the temperature was between 180 and 200 °C, the content of biuret, one of the by-products in the thermal decomposition of urea, reached a maximum. When the temperature was higher than 200 °C, the first stage of mass loss was completed quickly, and urea and biuret rapidly broke down. When the temperature was about 240 °C, there were rarely urea and biuret in residual substance; however, the content of cyanuric acid was still rising. When the temperature was higher than 280°C, there was a second stage of mass loss. In the second stage of mass loss, when the temperature was higher than 330 °C, mass decreased rapidly, which was mainly due to the decomposition of cyanuric acid. When the temperature was higher than 380 °C, the third stage of mass loss occurred. However, when the temperature was higher than 400 °C, and after continuous heating was applied for a sufficiently long time, the residual mass was reduced to almost zero eventually.
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Affiliation(s)
- Neng Zhu
- School of Automotive and Transportation Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; (N.Z.); (X.X.)
| | - Feng Qian
- School of Automotive and Transportation Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; (N.Z.); (X.X.)
- Correspondence: ; Tel.: +86-180-6206-0988
| | - Xiaowei Xu
- School of Automotive and Transportation Engineering, Wuhan University of Science and Technology, Wuhan 430081, China; (N.Z.); (X.X.)
| | - Mingda Wang
- Chinese Academy of Environmental Sciences, Beijing 100012, China; (M.W.); (Q.T.)
| | - Qi Teng
- Chinese Academy of Environmental Sciences, Beijing 100012, China; (M.W.); (Q.T.)
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Li Y, Dong M, Song W, Liang X, Chen Y, Liu Y. Preparation and Characterization of Paraffin/Mesoporous Silica Shape-Stabilized Phase Change Materials for Building Thermal Insulation. MATERIALS 2021; 14:ma14071775. [PMID: 33916813 PMCID: PMC8038418 DOI: 10.3390/ma14071775] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/29/2021] [Accepted: 03/31/2021] [Indexed: 11/27/2022]
Abstract
The use of phase change materials (PCMs) is an attractive method for energy storage and utilization in building envelopes. Here, shape-stabilized phase change materials (SS-PCMs) were prepared via direct adsorption using mesoporous silica (MS) with different pore diameters as the support matrix. The leakage properties, microstructure, chemical structure, thermophysical properties, activation energy, thermal stability and thermal storage-release characteristics of paraffin and SS-PCMs were investigated. The results show that the maximum mass proportion of paraffin in SS-PCMs is 70% when the average pore diameter of mesoporous silica is 15 nm, and the phase change temperature and latent heat of the corresponding SS-PCM are 23.6 °C and 135.4 kJ/kg, respectively. No chemical reaction occurs between mesoporous silica and paraffin and the SS-PCMs exhibit high thermal stability. The high activation energy of the paraffin (70%)/MS1 SS-PCM verifies that the shape and thermal properties can be maintained stably during phase change conversions. The time required for SS-PCMs to complete the thermal storage and release process is reduced by up to 34.0% compared with that for pure paraffin, showing a decline in the thermal conductivity of SS-PCMs after the addition of mesoporous silica. Hence, the prepared paraffin/MS SS-PCMs, in particular paraffin (70%)/MS1 SS-PCM, can be used for storing thermal energy and regulating indoor temperature in buildings.
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Affiliation(s)
- Yong Li
- State Key Laboratory of Green Building in Western China, Xi’an University of Architecture and Technology, No. 13 Yanta Road, Xi’an 710055, China;
- School of Building Services Science and Engineering, Xi’an University of Architecture and Technology, No. 13 Yanta Road, Xi’an 710055, China; (M.D.); (W.S.); (X.L.); (Y.C.)
- Correspondence:
| | - Mingyue Dong
- School of Building Services Science and Engineering, Xi’an University of Architecture and Technology, No. 13 Yanta Road, Xi’an 710055, China; (M.D.); (W.S.); (X.L.); (Y.C.)
| | - Wang Song
- School of Building Services Science and Engineering, Xi’an University of Architecture and Technology, No. 13 Yanta Road, Xi’an 710055, China; (M.D.); (W.S.); (X.L.); (Y.C.)
| | - Xiaoyu Liang
- School of Building Services Science and Engineering, Xi’an University of Architecture and Technology, No. 13 Yanta Road, Xi’an 710055, China; (M.D.); (W.S.); (X.L.); (Y.C.)
| | - Yaowen Chen
- School of Building Services Science and Engineering, Xi’an University of Architecture and Technology, No. 13 Yanta Road, Xi’an 710055, China; (M.D.); (W.S.); (X.L.); (Y.C.)
| | - Yanfeng Liu
- State Key Laboratory of Green Building in Western China, Xi’an University of Architecture and Technology, No. 13 Yanta Road, Xi’an 710055, China;
- School of Building Services Science and Engineering, Xi’an University of Architecture and Technology, No. 13 Yanta Road, Xi’an 710055, China; (M.D.); (W.S.); (X.L.); (Y.C.)
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Effect of Polyhedral Silsesquioxane Functionalized Sulfonic Acid Groups Incorporated Into Highly Sulfonated Polyphenylsulfone as Proton-Conducting Membrane. ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING 2020. [DOI: 10.1007/s13369-020-05088-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Janeta M, Lis T, Szafert S. Zinc Imine Polyhedral Oligomeric Silsesquioxane as a Quattro-Site Catalyst for the Synthesis of Cyclic Carbonates from Epoxides and Low-Pressure CO 2. Chemistry 2020; 26:13686-13697. [PMID: 33463802 DOI: 10.1002/chem.202002996] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2020] [Revised: 07/22/2020] [Indexed: 01/13/2023]
Abstract
In the present research, the synthesis, spectroscopic characterization, and structural investigations of a unique ZnII complex of imine-functionalized polyhedral oligomeric silsesquioxane (POSS) is designed, and hereby described, as a catalyst for the synthesis of cyclic carbonates from epoxides and CO2. The uncommon features of the designed catalytic system is the elimination of the need for a high pressure of CO2 and the significant shortening of reaction times commonly associated with such difficult transformations like that of styrene oxide to styrene carbonate. Our studies have shown that imine-POSS is able to chelate metal ions like ZnII to form a unique coordination complex. The silsesquioxane core and the hindrance of the side arms (their steric effect) influence the construction process of the homoleptic Zn4@POSS-1 complex. The compound was characterized in solution by NMR (1H, 13C, 29Si), ESI-MS, UV/Vis spectroscopy and in the solid state by thermogravimetric/differential thermal analysis (TG-DTA), elemental analysis, diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), cross-polarization magic angle spinning (CP MAS) NMR (13C, 29Si) spectroscopy, and X-ray crystallography.
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Affiliation(s)
- Mateusz Janeta
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383, Wrocław, Poland
| | - Tadeusz Lis
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383, Wrocław, Poland
| | - Sławomir Szafert
- Faculty of Chemistry, University of Wrocław, F. Joliot-Curie 14, 50-383, Wrocław, Poland
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Abstract
Cage-like silsesquioxanes are considered to be ideal and versatile building blocks of hybrid materials due to their unique structures and excellent performance. This Perspective highlights recent advances in the field of cage-like silsesquioxane-based hybrid materials, ranging from monomer functionalization and materials preparation to application. The existing issues are reviewed and the challenges and prospects in this field are also discussed for further development and exploitation.
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Affiliation(s)
- Yajing Du
- Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China.
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Ma S, Zhang L, Wang S, Zhang H, You X, Ou J, Ye M, Wei Y. Preparation of epoxy-functionalized hierarchically porous hybrid monoliths via free radical polymerization and application in HILIC enrichment of glycopeptides. Anal Chim Acta 2019; 1058:97-106. [PMID: 30851859 DOI: 10.1016/j.aca.2019.01.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 11/29/2018] [Accepted: 01/07/2019] [Indexed: 01/04/2023]
Abstract
Owing to their multiscale pore size regimes and unique properties, the materials with hierarchically porous structures have become an important family of functional materials in recent years. They have been applied from energy conversion and storage, catalysis, separation to drug delivery, etc. The synthesis of them is difficult by the need to employ multiple templates and take complicated steps. Herein, we successfully prepared epoxy-functionalized hierarchically porous hybrid monoliths (HPHMs) with micro/meso/macro-structures in an easy way. Firstly, a bulk monolithic material was formed via free radical polymerization between polyhedral oligomeric vinylsilsesquioxanes (vinylPOSS) and allyl glycidyl ether (AGE) in the presence of polycaprolactone (PCL). Then PCL was degraded with hydrochloric acid solution, and the epoxy-functionalized HPHM was obtained. This approach was very simple and suitable for large-scale preparation. Hybrid monoliths with different specific surface area (from 5.4 to 636.7 m2/g) were prepared by adjusting the mole ratio of vinylPOSS to AGE and the content of PCL. The results of several characterization methods, including nitrogen adsorption/desorption measurements, scanning electron microscopy (SEM) and mercury intrusion porosimetry (MIP), showed that these materials contained not only micropores and mesopores but also macropores. The materials were further modified with penicillamine to be used as hydrophilic interaction chromatography (HILIC) adsorbents for enriching N-glycopeptides in IgG and serum protein tryptic digests. Up to 23 N-glycopeptides were identified from IgG digest, and 385 N-glycopeptides and 283 N-glycosylation sites were identified from human serum digest.
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Affiliation(s)
- Shujuan Ma
- Key Laboratory of Synthetic and Natural Function Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, 710069, China; Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, 116023, China
| | - Luwei Zhang
- Key Laboratory of Synthetic and Natural Function Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, 710069, China; Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, 116023, China
| | - Shuyue Wang
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, 116023, China
| | - Haiyang Zhang
- Key Laboratory of Synthetic and Natural Function Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, 710069, China; Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, 116023, China
| | - Xin You
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, 116023, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Junjie Ou
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, 116023, China
| | - Mingliang Ye
- Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, 116023, China
| | - Yinmao Wei
- Key Laboratory of Synthetic and Natural Function Molecule Chemistry of Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an, 710069, China.
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Janeta M, Bury W, Szafert S. Porous Silsesquioxane-Imine Frameworks as Highly Efficient Adsorbents for Cooperative Iodine Capture. ACS APPLIED MATERIALS & INTERFACES 2018; 10:19964-19973. [PMID: 29788716 DOI: 10.1021/acsami.8b03023] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
Abstract
The efficient capture and storage of radioactive iodine (129I or 131I), which can be formed during nuclear energy generation or nuclear waste storage, is of paramount importance. Herein, we present highly efficient aerogels for reversible iodine capture, namely, porous silsesquioxane-imine frameworks (PSIFs), constructed by condensation of octa(3-aminopropyl)silsesquioxane cage compound and selected multitopic aldehydes. The resulting PSIFs are permanently porous (Brunauer-Emmet-Teller surface areas up to 574 m2/g), thermally stable, and present a combination of micro-, meso-, and macropores in their structures. The presence of a large number of imine functional groups in combination with silsesquioxane cores results in extremely high I2 affinity with uptake capacities up to 485 wt %, which is the highest reported to date. Porous properties can be controlled by the strut length and rigidity of linkers. In addition, PSIF-1a could be recycled at least four times while maintaining 94% I2 uptake capacity. Kinetic studies of I2 desorption show two strong binding sites with apparent activation energies of 77.0 and 89.0 kJ/mol. These energies are considerably higher than the enthalpy of sublimation of bulk I2.
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Affiliation(s)
- Mateusz Janeta
- Faculty of Chemistry , University of Wrocław , 14 F. Joliot-Curie , 50-383 Wrocław , Poland
| | - Wojciech Bury
- Faculty of Chemistry , University of Wrocław , 14 F. Joliot-Curie , 50-383 Wrocław , Poland
| | - Sławomir Szafert
- Faculty of Chemistry , University of Wrocław , 14 F. Joliot-Curie , 50-383 Wrocław , Poland
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Kaźmierczak J, Kuciński K, Stachowiak H, Hreczycho G. Introduction of Boron Functionalities into Silsesquioxanes: Novel Independent Methodologies. Chemistry 2018; 24:2509-2514. [PMID: 29315930 DOI: 10.1002/chem.201705898] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2017] [Indexed: 11/06/2022]
Abstract
Owing to their versatile application possibilities, silsesquioxanes (SQs) are of considerable interest for creating hybrid inorganic-organic materials. In this report, two novel and independent strategies for the direct attachment of boron functionalities to silsesquioxanes are presented. Encouraged by our previous work concerning the synthesis of borasiloxanes through the catalyst-free dehydrogenative coupling of silanols and boranes, we decided to apply our method to a synthesis of various boron-functionalized silsesquioxanes. During our tests, we also investigated the activity of scandium(III) triflate, which we have previously used as an excellent catalyst for the obtaining of Si-O-Si and Si-O-Ge moieties. As a result, we also discovered a novel approach for the O-borylation of Si-OH groups in silsesquioxanes with allylborane. Both routes are highly chemoselective and efficiently lead to the obtaining of Si-O-B moiety under air atmosphere and at room temperature.
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Affiliation(s)
- Joanna Kaźmierczak
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614, Poznań, Poland
| | - Krzysztof Kuciński
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614, Poznań, Poland
| | - Hanna Stachowiak
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614, Poznań, Poland
| | - Grzegorz Hreczycho
- Faculty of Chemistry, Adam Mickiewicz University in Poznań, Umultowska 89b, 61-614, Poznań, Poland
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