| Title |
Dialdehyde cellulose films covalently crosslinked with porphyrin-based covalent organic polymers for photodynamic sterilization |
| ID_Doc |
16124 |
| Authors |
Fu, QB; Li, HS; An, MZ; Sun, X; Zhang, SK; Zhang, TT; Yang, WJ; Li, YJ; Waterhouse, GIN; Liu, XA; Ai, SY |
| Title |
Dialdehyde cellulose films covalently crosslinked with porphyrin-based covalent organic polymers for photodynamic sterilization |
| Year |
2024 |
| Published |
|
| DOI |
10.1016/j.ijbiomac.2024.132893 |
| Abstract |
Foodborne pathogens result in a great harm to human, which is an urgent problem to be addressed. Herein, a novel cellulose -based packaging films with excellent anti -bacterial properties under visible light were prepared. A porphyrin-based covalent organic polymer (Por-COPs) was constructed, then covalently grafted onto dialdehyde cellulose (DAC). The addition of Por-COPs enhanced the mechanical, hydrophobicity, and water resistance of the DAC-based composite films. DAC/Por-COP-2.5 film exhibited outstanding properties for the photodynamic inactivation of bacteria under visible light irradiation, delivering inactivation efficiencies of 99.90 % and 99.45 % towards Staphylococcus aureus and Escherichia coli within 20 min. The DAC/Por-COPs films efficiently generated center dot O-2(-) and O-1(2) under visible light, thereby causing oxidative stress to cell membranes for bacterial inactivation. The prepared composite film forms a protective barrier against bacterial contamination. Results guide the development of high performance and more sustainable packaging films for the food sector. |
| Author Keywords |
Porphyrin-based covalent organic polymer; Dialdehyde cellulose; Packaging films |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:001251266900001 |
| WoS Category |
Biochemistry & Molecular Biology; Chemistry, Applied; Polymer Science |
| Research Area |
Biochemistry & Molecular Biology; Chemistry; Polymer Science |
| PDF |
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