期刊
CHEMICAL ENGINEERING JOURNAL
卷 478, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2023.147402
关键词
Tannic acid; Alginate; AIE; Carbon dots; Antibacterial
A multifunctional dual-responsive biopolymeric nanocoating with synergistically enhanced fluorescent and antibacterial properties has been designed and developed in this study. The nanocoating, composed of tannic acid rooted carbon dots and alginate-zinc complex, demonstrated excellent detection capabilities for biological molecules and enhanced antibacterial performance on a commercial fabric wipe.
Creating bio-based fluorescent probes with visual-sensing abilities and anti-infection performance is highly desirable but remains challenging. Herein, a multifunctional dual-responsive biopolymeric nanocoating has been designed with synergistically enhanced fluorescent and antibacterial properties that simply implemented by the combination of tannic acid rooted carbon dots (TN, redox-sensitive) and alginate-zinc complex (SA-Zn, ionicsensitive) possessing the aggregation-induced emission (AIE) characteristics. The mussel-inspired catechol groups and alginate-metal aggregates afford great film-forming abilities on diverse substrates while the entrapped TN enable manipulation of the redox-dependent fluorescent and antibacterial properties via generating reactive free radicals (ROS). The concept of facile pre-sensing and treatment towards in-home sensing application has been perfectly realized on a commercial fabric wipe, demonstrating excellent detection capabilities for biological molecules (e.g., H2O2 and metal cations) and synergistically enhanced antibacterial performance. Therefore, bridging the nano-redox carbon dots with nontraditional luminescent polysaccharides can provide enormous potential into advanced fluorescent materials for emerging healthcare applications.
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