Constructing ultra-stable photothermal plastics assisted by carbon dots with photocaged reactivity

2022 | journal article. A publication with affiliation to the University of Göttingen.

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​Constructing ultra-stable photothermal plastics assisted by carbon dots with photocaged reactivity​
Wan, J.; Wang, J.; Guo, H.; Wan, K.; Zhao, X.; Li, J. & Li, S. et al.​ (2022) 
Matter5(9) pp. 2864​-2881​.​ DOI: https://doi.org/10.1016/j.matt.2022.05.036 

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Authors
Wan, Jianyong; Wang, Jiaxiu; Guo, Hongda; Wan, Keliang; Zhao, Xinpeng; Li, Jian; Li, Shujun; Chen, Zhijun; Liu, Shouxin; Zhang, Kai 
Abstract
Photothermal materials, especially photothermal plastics, are crucial building blocks for functional devices. Covalently immobilizing the photothermal carbon dots in plastic matrix is a promising method for producing efficient photothermal plastics. However, the reactive moieties of photothermal carbon dots are often destroyed because of harsh preparation conditions, preventing their covalent interaction with plastic matrix. Here, we conceptualized carbon dots with photocaged reactivity (P-CDs) for producing ultra-stable photothermal plastics. During the formation of P-CDs, hydroxyl moieties were maintained in the preparation environment. Upon UV irradiation, hydroxyl moieties of P-CDs were in situ converted into aldehyde groups and reacted with amino groups in the polysaccharide matrix, producing P-CD plastics. As-obtained P-CD plastics showed strong stability against solution immersion and UV aging. In particular, the P-CD plastics showed a high photothermal conversion efficiency of 46.6%. Such efficient and robust photothermal P-CD plastics were further applied to prepare a solar-driven thermoelectric generator (TEG) for energy generation.
Issue Date
2022
Journal
Matter 
Organization
Fakultät für Forstwissenschaften und Waldökologie ; Burckhardt-Institut ; Abteilung Holztechnologie und Holzwerkstoffe 
ISSN
2590-2385
Language
English

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