Spatial control of curing kinetics in thiol-ene-systems through antagonistic photoreactions.

ABSTRACT: The use of two wavelengths to activate different photoreactions in a resin system has recently attracted much attention in the scientific community. Here, wavelength orthogonal photochemistry was used to spatially control the curing kinetics of the thiol-ene photopolymerization reaction. Antagonistic photochemical control is successfully applied to thiol-ene polymerization. In the investigated resin (pentaerythritol-tetrakis(3-mercaptopropionat); PETMP and triallyl-triazine-2,4,6(1H,3H,5H)-trione; TATO) system, radical curing is activated by a type II photoinitiator at 450 nm, while light at 365 nm is used to photorelease a base, resulting in an inhibition of the curing reaction. The antagonistic nature of these photoreactions is demonstrated in laser writing with minimum feature sizes bel

SUBMITTER: Holler RJ 

PROVIDER: S-EPMC12475060 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature