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(a) Bioactive molecules with an amine such as cRGD and NTA-amine can be linked through the NHS moiety and the molecule can be attached to any material with an azide functional group through CuAAC. The nitrobenzene in the linker allows for the photochemical detachment. (b) Surfaces functionalized with bioactive molecules through linker 1 can be pattered by locally cleaving off the molecules with light.
