Fluorescent Carbonized Polymer Dots Prepared from Sodium Alginate Based on the CEE Effect

• Published in: ACS omega Vol. 5; no. 42; pp. 27514 - 27521
• Main Authors: Sun, Jianxin, Yu, Junke, Jiang, Zhenjie, Zhao, Zhihui, Xia, Yanzhi
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 27-10-2020
• ISSN: 2470-1343; 2470-1343
• DOI: 10.1021/acsomega.0c03995

In recent years, as a new type of carbon dots, carbonized polymer dots (CPDs) have attracted more and more attention in many fields. In this experiment, a new kind of CPDs was synthesized by the hydrothermal treatment of the chemically cross-linked sodium alginate (SA) via glutaraldehyde. The fluorescence of CPDs was greatly enhanced because of the cross-linking enhanced emission effect. The formation process of CPDs at different reaction temperatures was explored. In addition, it was found that CPDs have stable fluorescence properties in mild acidic/basic and metal-ion environments. The in vitro toxicity of CPDs was tested, and based on their nontoxic property, SA films with anti-ultraviolet aging properties were prepared by using CPDs as the additive.