Article (Scientific journals)
Carbon dots as green photocatalysts for atom transfer radical polymerization of methacrylates
Campalani, Carlotta; Bragato, Nicola; Morandini, Andrea et al.
2023In Catalysis Today, 418, p. 114039
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Keywords :
Atom transfer radical polymerization; Carbon dots; Photocatalysis; Catalysis; Chemistry (all)
Abstract :
[en] We herein report the use of carbon dots (CDs) in photoinduced atom transfer radical polymerizations (ATRP) as green metal-free sensitizers. In particular, the production of a polymethacrylate (poly-METAC, METAC = 2-(methacryloyloxy)ethyl]trimethylammonium chloride) by using cheap and easily affordable CDs made from citric acid and diethylenetriamine, under both ultraviolet (UV, λ = 365 nm) and visible light was studied. Different solvent systems have been tested and a CuII complex was used as catalyst. Under the best conditions a polymer in 89% conversion and with a narrow dispersity (1.4) was obtained. The first order kinetics and the “on-off” experiments gave further evidence of the constant concentration of radicals and of the controlled mechanism of the polymerization.
Disciplines :
Chemistry
Author, co-author :
Campalani, Carlotta  ;  Université de Liège - ULiège > Département de chimie (sciences) > Center for Integrated Technology and Organic Synthesis ; Department of Molecular Sciences and Nanosystems, Università Ca’ Foscari di Venezia, Venezia, Italy
Bragato, Nicola;  Department of Molecular Sciences and Nanosystems, Università Ca’ Foscari di Venezia, Venezia, Italy
Morandini, Andrea;  Department of Molecular Sciences and Nanosystems, Università Ca’ Foscari di Venezia, Venezia, Italy
Selva, Maurizio;  Department of Molecular Sciences and Nanosystems, Università Ca’ Foscari di Venezia, Venezia, Italy
Fiorani, Giulia;  Department of Molecular Sciences and Nanosystems, Università Ca’ Foscari di Venezia, Venezia, Italy
Perosa, Alvise ;  Department of Molecular Sciences and Nanosystems, Università Ca’ Foscari di Venezia, Venezia, Italy
Language :
English
Title :
Carbon dots as green photocatalysts for atom transfer radical polymerization of methacrylates
Publication date :
June 2023
Journal title :
Catalysis Today
ISSN :
0920-5861
eISSN :
1873-4308
Publisher :
Elsevier B.V.
Volume :
418
Pages :
114039
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
Cariplo Foundation for Scientific Research
Fondazione Cariverona
Funding text :
This work was supported by: Nuova Ompi – Stevanato for funding AM’s research, Fondazione Cariverona for the project “Valorizzazione di scarti agroalimentari per nuovi cosmetici green” ID n° 1174 – Cod . SIME n° 2019.0428 and Fondazione Cariplo for the project “Photo- and Mechano-Chemistry for the Upgrading of Agro- and Sea-food Waste to advanced polymers and nanocarbon materials”, CUBWAM , n° 2021-0751 .Giorgia Minello is kindly acknowledged for her help during the experimental part of this project. Nuova Ompi – Stevanato is gratefully acknowledged for supporting AM’s research. Fondazione Cariverona is gratefully acknowledged for funding the project “Valorizzazione di scarti agroalimentari per nuovi cosmetici green” ID n° 1174 – Cod. SIME n° 2019.0428. We gratefully acknowledge the support from Fondazione Cariplo (Photo- and Mechano-Chemistry for the Upgrading of Agro- and Sea-food Waste to advanced polymers and nanocarbon materials, CUBWAM, project 2021–0751).This work was supported by: Nuova Ompi – Stevanato for funding AM's research, Fondazione Cariverona for the project “Valorizzazione di scarti agroalimentari per nuovi cosmetici green” ID n° 1174 – Cod. SIME n° 2019.0428 and Fondazione Cariplo for the project “Photo- and Mechano-Chemistry for the Upgrading of Agro- and Sea-food Waste to advanced polymers and nanocarbon materials”, CUBWAM, n° 2021-0751.
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