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Zhu J, Chen X, Huang T, Tian D, Gao R. Characterization and antioxidant properties of chitosan/ethyl-vanillin edible films produced via Schiff-base reaction. Food Sci Biotechnol 2023; 32:157-167. [PMID: 36647524 PMCID: PMC9839923 DOI: 10.1007/s10068-022-01178-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 08/21/2022] [Accepted: 09/06/2022] [Indexed: 01/19/2023] Open
Abstract
In this paper, chitosan/ethyl-vanillin (CS-EV) Schiff-base edible films with CS and EV at different concentrations and ratios were successfully prepared. The optical barrier properties, water contact angle, mechanical performance, water vapor transmission, antioxidant properties, thermal properties, and morphological structure of the films were compared. The results suggested that the tensile strength (TS) attained a maximum value of 64.63 MPa at a concentration of 4% EV. Moreover, water diffusion was prevented through the compact structure of the CS-EV edible film. Additionally, the two sides of the CS-EV film show different textures due to their different hydrophilicity/hydrophobicity. In particular, the films of CS possessed superior thermal stability, while those of CS-EV exhibited higher antioxidant activity.
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Affiliation(s)
- Jianfei Zhu
- School of Environment and Resources, Chongqing Technology and Business University, Chongqing, 400067 China
- Chongqing Engineering Research Center for Processing, Storage & Transportation of Characterized Agro–Products, Chongqing, 400067 China
| | - Xiaomei Chen
- School of Environment and Resources, Chongqing Technology and Business University, Chongqing, 400067 China
| | - Tingting Huang
- School of Environment and Resources, Chongqing Technology and Business University, Chongqing, 400067 China
| | - Dongling Tian
- School of Environment and Resources, Chongqing Technology and Business University, Chongqing, 400067 China
| | - Ruiping Gao
- School of Environment and Resources, Chongqing Technology and Business University, Chongqing, 400067 China
- Chongqing Engineering Research Center for Processing, Storage & Transportation of Characterized Agro–Products, Chongqing, 400067 China
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2
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Chen BB, Chang S, Jiang L, Lv J, Gao YT, Wang Y, Qian RC, Li DW, Hafez ME. Reversible polymerization of carbon dots based on dynamic covalent imine bond. J Colloid Interface Sci 2022; 621:464-469. [PMID: 35483178 DOI: 10.1016/j.jcis.2022.04.089] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 04/13/2022] [Accepted: 04/15/2022] [Indexed: 12/18/2022]
Abstract
Carbon dots (CDs), as new type of carbon-based nanoparticles, are considered to be an aggregate with irreversible polymerization. Achieving the reversible tunability of CDs luminescence based on their reversible polymerization is a challenging subject. Herein, we, for the first time, design and construct the blue-emitting CDs with reversible polymerization by a room-temperature Schiff base reaction between tannic acid and ethylenediamine. The formation of CDs is proven to be due to the crosslinking polymerization of precursors caused by imine bond. As a dynamic covalent bond, imine bond endows CDs with controllable structural transformation properties, and the prepared CDs can be depolymerized and polymerized reversibly by pH-controlled imine bond cleavage and re-formation. These properties of reversible fluorescence photoswitching make the CDs have a good application prospect in reversible information encryption.
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Affiliation(s)
- Bin-Bin Chen
- Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China; School of Science and Engineering, Shenzhen Institute of Aggregate Science and Technology, The Chinese University of Hong Kong, Shenzhen, 2001 Longxiang Boulevard, Longgang District, Shenzhen City, Guangdong 518172, China
| | - Shuai Chang
- Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Lei Jiang
- Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Jian Lv
- Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Ya-Ting Gao
- Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Yue Wang
- Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Ruo-Can Qian
- Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China
| | - Da-Wei Li
- Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China.
| | - Mahmoud Elsayed Hafez
- Key Laboratory for Advanced Materials, Shanghai Key Laboratory of Functional Materials Chemistry, Frontiers Science Center for Materiobiology & Dynamic Chemistry, School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China; Department of Chemistry, Faculty of Science, Beni-Suef University, Beni-Suef 62511, Egypt
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Liu S, Wu Q, Zhang T, Zhang H, Han J. Supramolecular brush polymers prepared from 1,3,4-oxadiazole and cyanobutoxy functionalised pillar[5]arene for detecting Cu2+. Org Biomol Chem 2021; 19:1287-1291. [DOI: 10.1039/d0ob02587a] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The self-assembly of an A1/A2 disubstituted pillar[5]arene was used to construct a supramolecular brush polymer.
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Affiliation(s)
- Shuangyan Liu
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Energy)
- College of Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Qiuxia Wu
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Energy)
- College of Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Tianze Zhang
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Energy)
- College of Chemistry
- Nankai University
- Tianjin 300071
- China
| | - Huacheng Zhang
- School of Chemical Engineering and Technology
- Xi'an Jiaotong University
- Xi'an
- China
| | - Jie Han
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Energy)
- College of Chemistry
- Nankai University
- Tianjin 300071
- China
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5
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Fraga López F, Válcarcel J, Soto VH, Martínez Ageitos JM, Rodríguez E, Vázquez Tato J. Analysis of curing of diglycidyl ether of bisphenol A (
BADGE
n = 0) with 2‐adamantylethanamine. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5075] [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]
Affiliation(s)
- Francisco Fraga López
- Facultad de Ciencias, Departamentos de Física Aplicada, Química Física y Ingeniería Química Campus de Lugo, Universidad de Santiago de Compostela Lugo Spain
| | - Javier Válcarcel
- Facultad de Ciencias, Departamentos de Física Aplicada, Química Física y Ingeniería Química Campus de Lugo, Universidad de Santiago de Compostela Lugo Spain
| | - Victor H. Soto
- Escuela de Química, Departamento de Química Orgánica Universidad de Costa Rica San Pedro Costa Rica
| | - José M. Martínez Ageitos
- Facultad de Ciencias, Departamentos de Física Aplicada, Química Física y Ingeniería Química Campus de Lugo, Universidad de Santiago de Compostela Lugo Spain
| | - Eugenio Rodríguez
- Facultad de Ciencias, Departamentos de Física Aplicada, Química Física y Ingeniería Química Campus de Lugo, Universidad de Santiago de Compostela Lugo Spain
| | - José Vázquez Tato
- Facultad de Ciencias, Departamentos de Física Aplicada, Química Física y Ingeniería Química Campus de Lugo, Universidad de Santiago de Compostela Lugo Spain
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Huo Y, He Z, Wang C, Zhang L, Xuan Q, Wei S, Wang Y, Pan D, Dong B, Wei R, Naik N, Guo Z. The recent progress of synergistic supramolecular polymers: preparation, properties and applications. Chem Commun (Camb) 2021; 57:1413-1429. [DOI: 10.1039/d0cc07247h] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Interactions for forming supramolecular polymers were reviewed together with their unique properties and applications with detailed examples.
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