Journal
ACS MACRO LETTERS
Volume 10, Issue 6, Pages 679-683Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsmacrolett.1c00298
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Funding
- Scientific and Technological Research Council of Turkey [120C121]
- Istanbul Technical University Research Fund
- Council of Higher Education of Turkey
- Turkish Academy of Sciences (TUBA)
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This study utilizes few-layer black phosphorus as a photocatalyst to initiate polymerization of various monomers under visible and near-IR light irradiation, with aryldiazonium salt identified as the most efficient photopolymerization catalyst. This strategy also enables the in situ preparation of BP-polymer composite materials.
In the drive toward the development of efficient and stable inorganic semiconductor materials with broadband solar absorption ability to induce various photochemical processes is a highly attractive research field. In this study, two-dimensional (2D) few-layer black phosphorus (BP) exfoliated in a solvent is utilized as photocatalyst to initiate the polymerization of various monomers under visible and near-IR (NIR) light irradiation. Upon the light exposure, few-layer BP generates excited electrons and holes, which undergo electron transfer reactions with the onium salts to form free radicals capable of initiating free radical polymerization. Among the onium salts tested, aryldiazonium salt was found to be the most efficient in the photopolymerization process owing to its favorable reduction potential with the conduction edge potential of BP. The presented strategy also provides the possibility for the in situ preparation of BP-polymer composite materials.
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