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Figure 1. UV-visible absorption spectra of riboflavin and the riboflavin-triethanolamine mixture in distilled water. TEOHA: Triethanolamine.
(Figure omitted. See article PDF.)
Figure 2. UV-Vis absorption spectrum of polyethylene glycol diacrylate and the 66% PEGda-riboflavin-triethanolamine mixture. PEGda: Polyethylene glycol diacrylate; TEOHA: Triethanolamine.
(Figure omitted. See article PDF.)
Figure 3. UV-visible transmission spectra of films normalized to a 500-µm path length. Light at 312, 365 and 405 nm is emitted by the UV curing chamber. PEGda: Polyethylene glycol diacrylate; TEOHA: Triethanolamine.
(Figure omitted. See article PDF.)
Figure 4. Parameter search arrays. (A) Polyethylene glycol diacrylate (PEGda) with 2% Irgacure® 369; (B) 66% PEGda-riboflavin-triethanolamine (the lowest evaluated laser power was subthreshold and is not present within the image); (C) PEGda with 2% Irgacure 2959. Linear scan speed increases from top to bottom and average power increases from left to right.
(Figure omitted. See article PDF.)
Figure 5. Optical images of 50% polyethylene glycol diacrylate-riboflavin-triethanolamine scaffolds in water.
(Figure omitted. See article PDF.)
Figure 6. Scanning electron microscopy images of a tissue engineering scaffold made from 50% polyethylene glycol diacrylate-riboflavin-triethanolamine.
(Figure omitted. See article PDF.)
Figure 7. Comet assay tail moments after 24 h of culture on photopolymer wafers. The error bars indicate the 95% CI. *p < 0.05. PEGda: Polyethylene glycol diacrylate; TEOHA: Triethanolamine.
(Figure omitted. See article PDF.)
Figure 8. Cell proliferation of GM-7373 bovine aortic endothelial cells on polyethylene glycol diacrylate wafers after 24 h of culture in the presence of photopolymer extract solutions. The error bars indicate the 95% CI. *p < 0.05.
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Figure 9. Cell viability of GM-7373 bovine aortic endothelial cells on polyethylene glycol diacrylate wafers after 24 h of culture in the presence of photopolymer extract solutions. The error bars indicate the 95% CI. *p < 0.05.
(Figure omitted. See article PDF.)
Figure 10. Fluorescence images of GM-7373 bovine aortic endothelial cells on riboflavin-triethanolamine-polyethylene glycol diacrylate scaffolds. Merged Live/Dead staining after 5 days of culture of a 50% riboflavin-triethanolamine-polyethylene glycol diacrylate scaffold seeded with GM-7373 endothelial cells. Fluorescence of ethidium homodimer-1 (associated with dead cells) is distinct from dull red autofluorescence of PEGda (right).
(Figure omitted. See article PDF.)
Figure 11. Calcein AM stain highlights live cells. Cell outgrowths were noted, which are similar to...