Novel photolabile cross-linker

What is it about?

Controlled decrosslinking is an attractive technique in the fields of functional materials and polymer recycling. Photo-triggered decrosslinking is especially advantageous for easy remote activation and spatiotemporal control. However, only a few photolabile units have been used for the cleavage in crosslinkers. Herein, we proposed novel crosslinkers that have a benzene ring bearing two or three arms in which O-acyloxime moiety is introduced as a novel type of photolabile unit, and the photo-induced degradation of resulting networked polymers are demonstrated.

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Why is it important?

These crosslinkers could be derived from starting ketones in two steps. Also, O-acyloxime moieties show good photo-reactivity and thermal stability.