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. Author manuscript; available in PMC: 2013 Nov 1.
Published in final edited form as: Biomaterials. 2012 Aug 17;33(33):8529–8539. doi: 10.1016/j.biomaterials.2012.07.028

Fig. 1. Photocurable styrene-modified gelatin formulation.

Fig. 1

(A) Photo-crosslinking reaction underlying the polymerization of styrene groups after blue visible light irradiation (BVLI, energy) in the presence of carboxylated camphorquinone (CQ) with oxygen free radical release. (B) Water-soluble carbodiimide (WSC) was added to the gelatin molecules to initiate strong crosslinking between the amino groups of rhBDNF, rhNT-3, laminin and fibronectin with carboxyl groups of gelatin molecules. (White arrow; shorter triple helix gelatin subunits formed by two α1 and one α2 chains). =O, primary oxygen electron transfer; R–H, organic compound (4VBA) hydrogen donors; ●, free radical; R●, active free radical capable of initiating photopolymerization; X, monomer.