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Hydrophobic Covalent Patterns on Cellulose Paper through Photothiol-X Ligations.

ABSTRACT: In the current study, we introduce photothiol-X chemistry as a powerful method to create hydrophobic patterns covalently grafted to the surface of cellulose paper. The general strategy builds on the use of a cellulose-based molecular printboard featuring disulfide functions which upon spatiocontrolled light irradiation at 365 nm allows robust photothiol-X ligations with hydrophobic moieties. A screening of structurally diverse molecular architectures as hydrophobic coating was conducted, and the most impressive result obtained with cholesterol moieties allows the creation of spatially well-resolved hydrophobic patterns with a contact angle of 140.8°. Our discoveries are supported by in-depth characterization studies using Fourier transform infrared spectroscopy, X-ray photoelectron spectrometry, and scanning electron microscopy analyses.

SUBMITTER: Bretel G

PROVIDER: S-EPMC6644802 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature

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Hydrophobic Covalent Patterns on Cellulose Paper through Photothiol-X Ligations.

Bretel Guillaume G Rull-Barrull Jordi J Nongbe Medy C MC Terrier Jean-Philippe JP Le Grognec Erwan E Felpin François-Xavier FX

ACS omega 20180815 8

In the current study, we introduce photothiol-X chemistry as a powerful method to create hydrophobic patterns covalently grafted to the surface of cellulose paper. The general strategy builds on the use of a cellulose-based molecular printboard featuring disulfide functions which upon spatiocontrolled light irradiation at 365 nm allows robust photothiol-X ligations with hydrophobic moieties. A screening of structurally diverse molecular architectures as hydrophobic coating was conducted, and the ...[more]

PMID: 31459049

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