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  Let a hundred polymers bloom : tunable wetting of photografted polymer-carbon nitride surfaces

Giusto, P., Kumru, B., Zhang, J., Rothe, R., & Antonietti, M. (2020). Let a hundred polymers bloom: tunable wetting of photografted polymer-carbon nitride surfaces. Chemistry of Materials, 32(17), 7284-7291. doi:10.1021/acs.chemmater.0c01798.

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 Creators:
Giusto, Paolo1, Author              
Kumru, Baris2, Author              
Zhang, Jianrui3, Author              
Rothe, Regina1, Author              
Antonietti, Markus4, Author              
Affiliations:
1Paolo Giusto, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_3245192              
2Baris Kumru, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_3202957              
3Bernhard Schmidt, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_2149676              
4Markus Antonietti, Kolloidchemie, Max Planck Institute of Colloids and Interfaces, Max Planck Society, ou_1863321              

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 Abstract: Sunlight is widely used by plants to produce chemical energy fundamental for all life, process that also serves as an inspiration for science. Recently, light-harvesting semiconductor materials, here carbon nitrides, have been widely used in photochemistry to catalyze reactions under visible light illumination. We exploited photoactive carbon nitride thin films as metal-free platform for one-step photo-grafting-from polymers on the surface. Here, we observe photoswitchable wetting properties of polystyrene grafted carbon nitride, which are independent of any classical photoswitchable groups. Dense and thick polymer brush formation with tunable thickness (up to 700 nm) was obtained, allowing for tailor surface properties. Furthermore, exploiting the reciprocal insolubility of water-dimethylacrylamide and pentane-styrene solutions, we provide a general method for synthesis of centimeter-scale pCN-based Janus asymmetric films. It is thought that the simple experimental design based on cheap and common chemicals provides a novel dimension of carbon nitride materials with advanced surface properties.

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Language(s): eng - English
 Dates: 2020-07-202020
 Publication Status: Published in print
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 Identifiers: DOI: 10.1021/acs.chemmater.0c01798
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Title: Chemistry of Materials
  Abbreviation : Chem. Mater.
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Chemical Society
Pages: - Volume / Issue: 32 (17) Sequence Number: - Start / End Page: 7284 - 7291 Identifier: ISSN: 0897-4756