Innentitelbild: Blocked Phosphates as Photolatent Catalysts for Dynamic Photopolymer Networks (Angew. Chem. 10/2023)

A temperature‐resistant organic phosphate with a photolabile o‐nitrobenzyl protecting group is introduced in a visible light curable thiol‐click photopolymer, as reported by Sandra Schlögl, Thomas Griesser et al. in their Communication (e202215525). The sequence‐dependent λ‐orthogonality of the curi...

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Bibliographic Details
Published in:Angewandte Chemie 2023-03, Vol.135 (10), p.n/a
Main Authors: Dertnig, Carina, Guedes de la Cruz, Gema, Neshchadin, Dmytro, Schlögl, Sandra, Griesser, Thomas
Format: Article
Language:English
Subjects:
3D Printing
Catalysts
Chemistry
Heat resistance
High temperature
Irradiation
Network formation
Orthogonality
Phosphates
Photochemistry
Photopolymers
Polymers
Radiation
Shape Memory
Vitrimer
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Summary:A temperature‐resistant organic phosphate with a photolabile o‐nitrobenzyl protecting group is introduced in a visible light curable thiol‐click photopolymer, as reported by Sandra Schlögl, Thomas Griesser et al. in their Communication (e202215525). The sequence‐dependent λ‐orthogonality of the curing and cleavage enables an efficient network formation at 451 nm, without premature release of the catalyst. Once the photopolymer is cured, irradiation at 372 nm spatiotemporally activates the phosphate, which catalyzes transesterifications at elevated temperature.
ISSN:0044-8249
1521-3757
DOI:10.1002/ange.202300929