Skip to main content
. Author manuscript; available in PMC: 2021 Jul 1.
Published in final edited form as: Ann Biomed Eng. 2020 Feb 4;48(7):2053–2063. doi: 10.1007/s10439-020-02460-w

FIGURE 1.

FIGURE 1

Multifunctional PEG thiol and thioester norbornene macromers rapidly form hydrogels via the photoinitiated thiol-ene polymerization. (a) Molecular structure of 8 arm 20 kDa PEG Thiol and 8 arm 20 kDa PEG Thioester norbornene. (b) Macromers participate in the radical mediated thiol-ene ‘click’ reaction catalyzed by the photoinitiator LAP to give rise to a fully formed hydrogel network. (c) A 3 wt% stoichiometric mixture of the two PEG macromers containing 1mM LAP rapidly polymerizes to a final modulus of 3500 Pa after 60s of irradiation with 10[mW][cm]−2 365nm UV light.