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

Jianxin Sun; Junke Yu; Zhenjie Jiang; Zhihui Zhao; Yanzhi Xia

doi:10.1021/acsomega.0c03995

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

ACS Omega. 2020 Oct 13;5(42):27514-27521. doi: 10.1021/acsomega.0c03995. eCollection 2020 Oct 27.

Authors

Jianxin Sun¹, Junke Yu¹, Zhenjie Jiang¹, Zhihui Zhao¹, Yanzhi Xia¹

Affiliation

¹ State Key Laboratory of Bio-Fibers and Eco-Textiles, Shandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological Textiles, Institute of Marine Biobased Materials, School of Material Science and Engineering, Qingdao University, Qingdao 266071, China.

Abstract

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.