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. Author manuscript; available in PMC: 2019 Feb 23.
Published in final edited form as: Angew Chem Int Ed Engl. 2018 Jan 24;57(9):2357–2361. doi: 10.1002/anie.201711441

Figure 1.

Figure 1

Schematic illustration of the capture and release of DNA or RNA via a psoralen-modified hydrogel. Conditions: (i) photopolymerization: 2,2-azobis[2-methyl-N-(2-hydroxyethyl) propionamide] (0.2 %(w/v)), UV irradiation (> 390 nm). (1) psoralen. (2) DNA or RNA: R = H for RNA; R = CH3 for DNA. (3) pyrone-side monoadduct. (4) furan-side monoadduct. (5) diadduct. hν1: > 350 nm; hν2: < 325 nm.