1
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Marto-Costa C, Toffoletto N, Salema-Oom M, Antunes AMM, Pinto CA, Saraiva JA, Silva-Herdade AS, Alvarez-Lorenzo C, Serro AP. Improved triamcinolone acetonide-eluting contact lenses based on cyclodextrins and high hydrostatic pressure assisted complexation. Carbohydr Polym 2024; 331:121880. [PMID: 38388063 DOI: 10.1016/j.carbpol.2024.121880] [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: 10/12/2023] [Revised: 01/25/2024] [Accepted: 01/26/2024] [Indexed: 02/24/2024]
Abstract
Contact lenses (CLs) constitute an advantageous platform for the topical release of corticosteroids due to their prolonged contact with the eye. However, the lipophilic nature of corticosteroids hampers CLs' ability to release therapeutic amounts. Two approaches to improve loading and release of triamcinolone acetonide (TA) from poly(2-hydroxyethyl methacrylate)-based hydrogels were investigated: adding 2-hydroxypropyl-β-cyclodextrin (HP-β-CD) to the monomers solution before polymerization (HEMA/i-CD) and an hydrogels' post-treatment with HP-β-CD (HEMA/p-CD). The effect of HP-β-CD and sterilization by high hydrostatic pressure (HHP) on the hydrogel properties (water content, oxygen and ion permeability, roughness, transmittance, and stiffness) was evaluated. The HEMA/i-CD hydrogels had stronger affinity for TA, sustaining its release for one day. HHP sterilization promoted the formation of cyclodextrin-TA complexes within the hydrogels, improving their drug-loading capacity »60 %. Cytotoxicity and irritability tests confirmed the safety of the therapeutic CLs. TA released from the hydrogels permeated through ocular tissues ex vivo and showed anti-inflammatory activity. Finally, a previously validated mathematical model was used to estimate the ability of the TA-loaded CLs to deliver therapeutic drug concentrations to the posterior part of the eye. Overall, HP-β-CD-containing CLs are promising candidates for the topical ocular application of TA as an alternative delivery system to intraocular injections.
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Affiliation(s)
- Carolina Marto-Costa
- Centro de Química Estrutural (CQE) - Institute of Molecular Sciences and Chemical Engineering Department, Instituto Superior Técnico - University of Lisbon, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; Egas Moniz Center for Interdisciplinary Research (CiiEM), Egas Moniz School of Health & Science, Campus Universitário, Quinta da Granja, 2829-511 Monte da Caparica, Almada, Portugal.
| | - Nadia Toffoletto
- Centro de Química Estrutural (CQE) - Institute of Molecular Sciences and Chemical Engineering Department, Instituto Superior Técnico - University of Lisbon, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; Egas Moniz Center for Interdisciplinary Research (CiiEM), Egas Moniz School of Health & Science, Campus Universitário, Quinta da Granja, 2829-511 Monte da Caparica, Almada, Portugal.
| | - Madalena Salema-Oom
- Egas Moniz Center for Interdisciplinary Research (CiiEM), Egas Moniz School of Health & Science, Campus Universitário, Quinta da Granja, 2829-511 Monte da Caparica, Almada, Portugal.
| | - Alexandra M M Antunes
- Centro de Química Estrutural (CQE) - Institute of Molecular Sciences and Chemical Engineering Department, Instituto Superior Técnico - University of Lisbon, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.
| | - Carlos A Pinto
- LAQV-REQUIMTE, Chemical Engineering Department, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
| | - Jorge A Saraiva
- LAQV-REQUIMTE, Chemical Engineering Department, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
| | - Ana S Silva-Herdade
- Instituto de Bioquímica, Instituto de Medicina Molecular, Faculdade de Medicina - University of Lisbon, Av. Prof. Egas Moniz, 1649-028 Lisboa, Portugal.
| | - Carmen Alvarez-Lorenzo
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+DFarma (GI-1645), Facultad de Farmacia, Instituto de Materiales (iMATUS) and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
| | - Ana Paula Serro
- Centro de Química Estrutural (CQE) - Institute of Molecular Sciences and Chemical Engineering Department, Instituto Superior Técnico - University of Lisbon, Av. Rovisco Pais, 1049-001 Lisboa, Portugal; Egas Moniz Center for Interdisciplinary Research (CiiEM), Egas Moniz School of Health & Science, Campus Universitário, Quinta da Granja, 2829-511 Monte da Caparica, Almada, Portugal.
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Song R, Li Y, Chen Y, Qiu Z, Huang L. Chiral covalent organic framework incorporated organic polymer monolithic capillary column for enantioseparations. J Sep Sci 2023; 46:e2201039. [PMID: 36750206 DOI: 10.1002/jssc.202201039] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 01/19/2023] [Accepted: 02/04/2023] [Indexed: 02/09/2023]
Abstract
A chiral covalent organic framework was synthesized, characterized, and incorporated into organic polymer monolithic capillary columns to provide chiral stationary phases for enantioseparations. The prepared monolithic capillary columns were characterized by scanning electron microscopy and elemental analysis. To obtain better enantioseparations, the columns' preparation conditions, and enantioseparation conditions were optimized. Baseline resolutions of several chiral compounds were obtained with good reproducibility and stability. Furthermore, the mechanism of chiral recognition was investigated using molecular docking with AutoDock. Docking results showed that the enantioselectivity factor rather than resolution is correlated with the binding free energy difference between enantiomers with the chiral covalent organic framework. And abundant acetoxy and nitrile groups as well as benzene rings in the chiral covalent organic framework are responsible for the enantioseparation ability of the chiral monolithic capillary columns.
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Affiliation(s)
- Ruike Song
- College of Materials and Chemical Engineering, Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, Fujian Engineering and Research Center of New Chinese Lacquer Materials, Minjiang University, Fuzhou, P. R. China
| | - Yanxia Li
- College of Materials and Chemical Engineering, Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, Fujian Engineering and Research Center of New Chinese Lacquer Materials, Minjiang University, Fuzhou, P. R. China
| | - Yiting Chen
- College of Materials and Chemical Engineering, Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, Fujian Engineering and Research Center of New Chinese Lacquer Materials, Minjiang University, Fuzhou, P. R. China
| | - Zhenli Qiu
- College of Materials and Chemical Engineering, Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, Fujian Engineering and Research Center of New Chinese Lacquer Materials, Minjiang University, Fuzhou, P. R. China
| | - Lu Huang
- College of Materials and Chemical Engineering, Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, Fujian Engineering and Research Center of New Chinese Lacquer Materials, Minjiang University, Fuzhou, P. R. China
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3
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Zhang J, Liang L, Miao Y, Yang Y, Bao X, Liu C. Open-tubular capillary electrochromatography with hydroxypropyl-β-cyclodextrin imprinted polymers: hybrid polyhedral oligomeric silsesquioxane as a coating for enantioseparation. RSC Adv 2022; 12:9637-9644. [PMID: 35424918 PMCID: PMC8985239 DOI: 10.1039/d2ra00079b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Accepted: 03/22/2022] [Indexed: 11/21/2022] Open
Abstract
A hydroxypropyl-β-cyclodextrin (HP-β-CD) imprinted coating based on polyhedral oligomeric silsesquioxane (POSS) for open tubular electrochromatography was prepared. The mixture of methacryl-POSS (MA0735), HP-β-CD (template), methacrylic acid (MAA, monomer), N,N'-methylenebisacrylamide (MBA, crosslinker) and toluene-dimethyl sulfoxide (porogen) was used to synthesize the chiral selective coating. The influence of synthesis parameters on the imprinting effect and separation performance, including the amount of HP-β-CD, POSS, and MAA, was investigated systemically. The optimum polymerization was prepared by mixing HP-β-CD, MA0735, MAA, and MBA with the molar ratio of 1 : 1.87 : 1.60 : 1.60. Five racemates were separated by the modified capillary columns using aqueous buffer. Column efficiency on the POSS-based MIPs coating column was greater than 22 000 plates/m. MIPs-POSS hybrid coating capillaries had improved resolution (3.36 times) and the greatest resolution was up to 6.15 within 10 min.
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Affiliation(s)
- Jian Zhang
- School of Pharmacy, Xi'an Medical University Xi'an 710021 China
- Institute of Medicine, Xi'an Medical University Xi'an 710021 China
| | - Lingling Liang
- School of Pharmacy, Xi'an Medical University Xi'an 710021 China
- Institute of Medicine, Xi'an Medical University Xi'an 710021 China
| | - Yanqing Miao
- School of Pharmacy, Xi'an Medical University Xi'an 710021 China
- Institute of Medicine, Xi'an Medical University Xi'an 710021 China
| | - Yang Yang
- School of Pharmacy, Xi'an Medical University Xi'an 710021 China
| | - Xin Bao
- School of Pharmacy, Xi'an Medical University Xi'an 710021 China
| | - Chunye Liu
- School of Pharmacy, Xi'an Medical University Xi'an 710021 China
- Institute of Medicine, Xi'an Medical University Xi'an 710021 China
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4
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Bao W, Zhang C, Yang M, Nan D, Liu T, Guo X, Fang L. Preparation and modeling study of novel carboxymethyl-β-cyclodextrin silica hybrid monolithic column for enantioseparations in capillary electrochromatography. Microchem J 2021. [DOI: 10.1016/j.microc.2021.106719] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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5
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Bui CV, Rosenau T, Hettegger H. Polysaccharide- and β-Cyclodextrin-Based Chiral Selectors for Enantiomer Resolution: Recent Developments and Applications. Molecules 2021; 26:molecules26144322. [PMID: 34299597 PMCID: PMC8307936 DOI: 10.3390/molecules26144322] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Revised: 07/13/2021] [Accepted: 07/13/2021] [Indexed: 01/08/2023] Open
Abstract
Polysaccharides, oligosaccharides, and their derivatives, particularly of amylose, cellulose, chitosan, and β-cyclodextrin, are well-known chiral selectors (CSs) of chiral stationary phases (CSPs) in chromatography, because they can separate a wide range of enantiomers. Typically, such CSPs are prepared by physically coating, or chemically immobilizing the polysaccharide and β-cyclodextrin derivatives onto inert silica gel carriers as chromatographic support. Over the past few years, new chiral selectors have been introduced, and progressive methods to prepare CSPs have been exploited. Also, chiral recognition mechanisms, which play a crucial role in the investigation of chiral separations, have been better elucidated. Further insights into the broad functional performance of commercially available chiral column materials and/or the respective newly developed chiral phase materials on enantiomeric separation (ES) have been gained. This review summarizes the recent developments in CSs, CSP preparation, chiral recognition mechanisms, and enantiomeric separation methods, based on polysaccharides and β-cyclodextrins as CSs, with a focus on the years 2019-2020 of this rapidly developing field.
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Affiliation(s)
- Cuong Viet Bui
- Department of Chemistry, Institute of Chemistry of Renewable Resources, University of Natural Resources and Life Sciences, Konrad-Lorenz-Straße 24, Tulln, A-3430 Vienna, Austria; (C.V.B.); (T.R.)
- Department of Food Technology, Faculty of Chemical Engineering, University of Science and Technology—The University of Danang, Danang City 550000, Vietnam
| | - Thomas Rosenau
- Department of Chemistry, Institute of Chemistry of Renewable Resources, University of Natural Resources and Life Sciences, Konrad-Lorenz-Straße 24, Tulln, A-3430 Vienna, Austria; (C.V.B.); (T.R.)
- Johan Gadolin Process Chemistry Centre, Åbo Akademi University, Porthansgatan 3, FI-20500 Åbo, Finland
| | - Hubert Hettegger
- Department of Chemistry, Institute of Chemistry of Renewable Resources, University of Natural Resources and Life Sciences, Konrad-Lorenz-Straße 24, Tulln, A-3430 Vienna, Austria; (C.V.B.); (T.R.)
- Correspondence:
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6
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Guo T, Kong L, Xu J, Geng Y, Zhang R, Pan Y, Xiao H. Intermolecular interactions between β-cyclodextrin and water. RSC Adv 2021; 11:24807-24815. [PMID: 35481034 PMCID: PMC9037024 DOI: 10.1039/d1ra03960a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 06/25/2021] [Indexed: 11/30/2022] Open
Abstract
This study focused on demonstrating the intermolecular interactions between β-cyclodextrin and water, with the aim to better understand the transfer of small molecules to β-cyclodextrin. The intermolecular interaction strength between β-cyclodextrin and water was analyzed using different methods such as the dynamic adsorption of water, the TG-DSC of β-cyclodextrin and molecular modeling employing MM2 force field calculations. The experiments for the adsorption of water on β-cyclodextrin was aimed to systematically investigate the adsorption characteristics, such as adsorption capacity, adsorption rate, adsorption heat and activation energy, influenced by the adsorption temperature and vapor pressure of water. The results indicated that the water adsorption on β-cyclodextrin is an exothermic process. The hysteresis loop type in the adsorption isotherms at multiple temperatures indicated that water adsorption is not purely a traditional physical adsorption due to the existence of structure effects such as the cavity effect and hydrogen bonding. The activation energy during water adsorption was 7.4 kJ mol-1. However, the activation energy during water desorption was in the range of 35-45 kJ mol-1, which decreased with an increase in the amount of water adsorbed. This indicated that water adsorption is much easier than water desorption from β-cyclodextrin and that water desorption is more difficult with a small amount of adsorbed water compared with a large amount of adsorbed water. Subsequently, the obtained average intermolecular interaction strength between β-cyclodextrin and water under the experimental conditions was 67.5 kJ mol-1 (water), which was verified by DSC.
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Affiliation(s)
- Tianxiang Guo
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Power University Baoding 071003 PR China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University Beijing 102206 PR China
| | - Lingfeng Kong
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Power University Baoding 071003 PR China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University Beijing 102206 PR China
| | - Junpeng Xu
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Power University Baoding 071003 PR China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University Beijing 102206 PR China
| | - Yuhan Geng
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Power University Baoding 071003 PR China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University Beijing 102206 PR China
| | - Runan Zhang
- Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Power University Baoding 071003 PR China
- MOE Key Laboratory of Resources and Environmental Systems Optimization, College of Environmental Science and Engineering, North China Electric Power University Beijing 102206 PR China
| | - Yuanfeng Pan
- School of Chemistry and Chemical Engineering, Guangxi University Nanning 530004 PR China
| | - Huining Xiao
- Department of Chemical Engineering, University of New Brunswick Fredericton E3B 5A3 Canada
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7
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Huang ZF, Chen YL, Zhou CY, Li YH, Li M, Liu XB, Mao LC, Yuan JY, Tao L, Wei Y. Polymerizable AEE-active Dye with Optical Activity for Fluorescent Nanoparticles Based on Phenothiazine: Synthesis, Self-assembly and Biological Imaging. CHINESE JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1007/s10118-021-2596-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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8
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Deng M, Xue M, Liu Y, Zhao M. Preparation of a novel hydroxypropyl-γ-cyclodextrin functionalized monolith for separation of chiral drugs in capillary electrochromatography. Chirality 2021; 33:188-195. [PMID: 33604997 DOI: 10.1002/chir.23300] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 12/02/2020] [Accepted: 01/19/2021] [Indexed: 12/22/2022]
Abstract
In this study, a novel hydroxypropyl-γ-cyclodextrin (HP-γ-CD) functionalized monolithic capillary column was prepared by one-pot sequential strategy and used for chiral separation in capillary electrochromatography for the first time. In one pot, GMA-HP-γ-CD as functional monomer was allowed to be formed via the ring opening reaction between HP-γ-CD and glycidyl methacrylate (GMA) catalyzed by 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) and then copolymerized directly with ethylene dimethacrylate (EDMA) and 2-acrylamido-2-methyl propane sulfonic acid (AMPS) in the presence of porogenic solvents via thermally initiated free radical polymerization. The preparation conditions of monoliths were optimized. Enantiomer separations of six chiral drugs including pindolol, clorprenaline, tulobuterol, clenbuterol, propranolol, and tropicamide were achieved on the monolith. Among them, pindolol, clorprenaline, and tropicamide were baseline separated with resolution values of 1.62, 1.73, and 1.55, respectively. The mechanism of enantiomer separation was discussed by comparison of the HP-γ-CD and HP-β-CD functionalized monoliths.
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Affiliation(s)
- Miaoduo Deng
- College of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
| | - Mengyao Xue
- College of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
| | - Yanru Liu
- College of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
| | - Min Zhao
- College of Pharmacy, Shenyang Pharmaceutical University, Shenyang, China
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9
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Advancements in the preparation and application of monolithic silica columns for efficient separation in liquid chromatography. Talanta 2021; 224:121777. [PMID: 33379011 DOI: 10.1016/j.talanta.2020.121777] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 10/11/2020] [Accepted: 10/12/2020] [Indexed: 01/23/2023]
Abstract
Fast and efficient separation remains a big challenge in high performance liquid chromatography (HPLC). The need for higher efficiency and resolution in separation is constantly in demand. To achieve that, columns developed are rapidly moving towards having smaller particle sizes and internal diameters (i.d.). However, these parameters will lead to high back-pressure in the system and will burden the pumps of the HPLC instrument. To address this limitation, monolithic columns, especially silica-based monolithic columns have been introduced. These columns are being widely investigated for fast and efficient separation of a wide range of molecules. The present article describes the current methods developed to enhance the column efficiency of particle packed columns and how silica monolithic columns can act as an alternative in overcoming the low permeability of particle packed columns. The fundamental processes behind the fabrication of the monolith including the starting materials and the silica sol-gel process will be discussed. Different monolith derivatization and end-capping processes will be further elaborated and followed by highlights of the performance such monolithic columns in key applications in different fields with various types of matrices.
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10
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Liu Y, Su Z, Jiang S, Sun H, Lyu H, Xie Z. Rapid preparation and characterization of a bridged bis(β-cyclodextrin) functionalized urea–formaldehyde monolithic column by a “one-pot” approach. Polym Chem 2021. [DOI: 10.1039/d1py00906k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new bridged-CD monolith was prepared by “one-pot” method within 30 minutes. The obtained bridged-CD monolith showed satisfactory enantioselectivity compared to a native-CD monolith.
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Affiliation(s)
- Yue Liu
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Zhiping Su
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Shuangcheng Jiang
- Fisheries Research Institute of Fujian, Fujian, Xiamen, 361013, China
| | - Haoran Sun
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Haixia Lyu
- College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, China
| | - Zenghong Xie
- College of Chemistry, Fuzhou University, Fuzhou, 350108, China
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11
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Dehghani A, Bahlakeh G, Ramezanzadeh B. Construction of a sustainable/controlled-release nano-container of non-toxic corrosion inhibitors for the water-based siliconized film: Estimating the host-guest interactions/desorption of inclusion complexes of cerium acetylacetonate (CeA) with beta-cyclodextrin (β-CD) via detailed electronic/atomic-scale computer modeling and experimental methods. JOURNAL OF HAZARDOUS MATERIALS 2020; 399:123046. [PMID: 32540706 DOI: 10.1016/j.jhazmat.2020.123046] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 05/21/2020] [Accepted: 05/23/2020] [Indexed: 06/11/2023]
Abstract
Utilization of the coatings with self-healing anti-corrosion activities is one of the most promising routes for the development of advanced anti-corrosion coatings. In the present work, the green/sustainable corrosion inhibitive compounds based on the cerium acetylacetonate (CeA) was loaded into a beta-cyclodextrin (β-CD) nano-container (with negligible hazardous impacts) and through combined computer modeling and experimental approaches, the host-guest interactions/desorptions of the inclusion complexes of CeA with beta-cyclodextrin (β-CD) were assessed. The inhibition performance of the β-CD-CeA inclusion complex was investigated by electrochemical and surface experiments in a saline solution (NaCl, 3.5 wt.%). The particles were analyzed by Raman, XRD, FT-IR, and UV-vis spectroscopies. Additionally, the thermal properties in the 30-600 °C temperature range were examined by employing TGA/DTG test, and via the ICP analysis, the concentration of the released inorganic compounds in the electrolyte was studied. Achievements demonstrated 24 ppm Ce element existence after introducing β-CD-CeA inclusion complexes (during 24 h) in NaCl 3.5 wt.% solution. The analysis of Tafel curves proved that the prepared β-CD-CeA inclusion complex could inhibit the metallic substrate corrosion following the mixed cathodic and anodic mechanisms. The EIS investigation disclosed about 82 % inhibition degree after 48 h of metal immersion in the solution containing β-CD-CeA extract. The EIS analysis clarified that the silane coating (SC) resistance was enhanced noticeably by introducing the β-CD-CeA particles into the SC matrix. Using detailed-level (i.e., electronic and atomic) computer modeling techniques applying density functional theory (DFT), Mote Carlo (MC) and molecular dynamics (MD), the active sites, and the adsorption propensity of CeA complexes over the steel-based metallic adsorbents were explored. These modelings evidenced the CeA complexes interfacial adsorption on the steel.
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Affiliation(s)
- Ali Dehghani
- Department of Chemical Engineering, Faculty of Engineering, Golestan University, Aliabad Katoul, Iran
| | - Ghasem Bahlakeh
- Department of Chemical Engineering, Faculty of Engineering, Golestan University, Aliabad Katoul, Iran
| | - Bahram Ramezanzadeh
- Department of Surface Coatings and Corrosion, Institute for Color Science and Technology, P.O. Box 16765-654, Tehran, Iran.
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12
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Hydroxypropyl β-cyclodextrin nanohybrid monoliths for use in capillary electrochromatography with UV detection: application to the enantiomeric separation of adrenergic drugs, anticholinergic drugs, antidepressants, azoles, and antihistamine. Mikrochim Acta 2020; 187:381. [DOI: 10.1007/s00604-020-04317-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2019] [Accepted: 05/08/2020] [Indexed: 02/06/2023]
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13
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Zhou L, Liu B, Guan J, Jiang Z, Guo X. Preparation of sulfobutylether β-cyclodextrin-silica hybrid monolithic column, and its application to capillary electrochromatography of chiral compounds. J Chromatogr A 2020; 1620:460932. [DOI: 10.1016/j.chroma.2020.460932] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 01/26/2020] [Accepted: 01/27/2020] [Indexed: 01/09/2023]
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14
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Recent advances in preparation and applications of monolithic chiral stationary phases. Trends Analyt Chem 2020. [DOI: 10.1016/j.trac.2019.115774] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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15
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Hu LF, Yin SJ, Zhang H, Yang FQ. Recent developments of monolithic and open-tubular capillary electrochromatography (2017-2019). J Sep Sci 2020; 43:1942-1966. [PMID: 31909566 DOI: 10.1002/jssc.201901168] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 12/26/2019] [Accepted: 12/28/2019] [Indexed: 12/21/2022]
Abstract
Capillary electrochromatography, which combined the high selectivity of high-performance liquid chromatography and the high separation efficiency of capillary electrophoresis, is an attractive separation tool. In this review, the developments on monolithic and open tubular capillary electrochromatography during 2017 to August 2019 are summarized. Considering the development of novel stationary phases is the most active research field in capillary electrochromatography, monolithic capillary electrochromatography is classified according to the polymer-based and hybrid monolithic columns, while open-tubular capillary electrochromatography is categorized by cyclodextrin, silica, polymer, nanomaterials, microporous materials, and biomaterials-based open tubular columns.
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Affiliation(s)
- Lin-Feng Hu
- Chongqing Key Laboratory of Medicinal Resources in the Three Gorges Reservoir Region, School of Biological and Chemical Engineering, Chongqing University of Education, Chongqing, P.R. China
| | - Shi-Jun Yin
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, P.R. China
| | - Hao Zhang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, P.R. China
| | - Feng-Qing Yang
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, P.R. China
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16
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Fan C, Tang H, Wang L, Li Y, Wang X, Wang S, Liang X. The preparation of a core–shell stationary phase by the in situ polymerization of a hydrophilic polymer on the surface of silica and its chromatographic performance. NEW J CHEM 2020. [DOI: 10.1039/d0nj01197e] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
A method for the in situ polymerization of polymers on a silica surface was developed.
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Affiliation(s)
- Chao Fan
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- China
| | - Hao Tang
- Department of Pharmacy
- Gansu Provincial Hospital
- Lanzhou 730000
- China
| | - Licheng Wang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- China
| | - Yijing Li
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- China
| | - Xusheng Wang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- China
| | - Shuai Wang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- China
| | - Xiaojing Liang
- CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province
- Lanzhou Institute of Chemical Physics
- Chinese Academy of Sciences
- Lanzhou
- China
| |
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