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Updated: Dec 2, 2025
Advanced Compositional Analysis of Nanoparticle-polymer Composites Using Direct Fluorescence Imaging
Published on: July 19, 2016
Fluorescent Carbonized Polymer Dots Prepared from Sodium Alginate Based on the CEE Effect
Jianxin Sun1, Junke Yu1, Zhenjie Jiang1
1State 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.
New carbonized polymer dots (CPDs) were synthesized from sodium alginate (SA) using glutaraldehyde. These CPDs exhibit enhanced fluorescence and stable properties, showing potential for UV-protective materials.
Area of Science:
- Materials Science
- Nanotechnology
- Polymer Chemistry
Background:
- Carbonized polymer dots (CPDs) are emerging nanomaterials with diverse applications.
- Sodium alginate (SA) is a biocompatible polysaccharide with potential for material functionalization.
Purpose of the Study:
- To synthesize novel CPDs from chemically cross-linked SA.
- To investigate the fluorescence properties and stability of the synthesized CPDs.
- To evaluate the potential of CPDs as additives in SA films for UV protection.
Main Methods:
- Hydrothermal treatment of glutaraldehyde-cross-linked SA to synthesize CPDs.
- Characterization of CPD formation at varying reaction temperatures.
- Assessment of CPD fluorescence stability in different chemical environments (pH, metal ions).
- In vitro toxicity testing of CPDs.
- Preparation and evaluation of SA films incorporating CPDs for anti-UV aging.
Main Results:
- Successful synthesis of CPDs via hydrothermal treatment of cross-linked SA.
- Enhanced fluorescence observed in CPDs due to cross-linking enhanced emission.
- CPDs demonstrated stable fluorescence in mild acidic/basic conditions and in the presence of various metal ions.
- In vitro toxicity tests confirmed the non-toxic nature of the synthesized CPDs.
- SA films with CPD additives exhibited enhanced anti-ultraviolet aging properties.
Conclusions:
- Glutaraldehyde-cross-linked SA is a viable precursor for synthesizing highly fluorescent CPDs.
- The synthesized CPDs possess robust fluorescence stability, making them suitable for various applications.
- CPDs are non-toxic and can be effectively incorporated into SA films to impart UV-protective capabilities, suggesting potential for advanced material development.
