Photoclick chemistry of silk for temporary uv tattoos

(canceled)

(canceled)

A method of generating a silk photoclick tattoo in a subject's skin, the method comprising the following steps:

• a) administering a silk photoclick tattoo ink to an area of the subject's skin, the silk photoclick tattoo ink comprising modified silk nanoparticles and photoclick chromophores, the modified silk nanoparticles comprising modified silk fibroin functionalized with a plurality of first photoclick chemistry pair moieties, wherein the modified silk nanoparticles are biocompatible and bioresorbable, the photoclick chromophores comprising a second photoclick chemistry pair moiety;
• b) exposing the silk photoclick tattoo ink within the area to light having a predetermined wavelength for a predetermined exposure length and a predetermined exposure intensity, thereby initiating a known photoreaction and covalently bonding at least a portion of the photoclick chromophores to at least a portion of the modified silk nanoparticles,
• the administering and exposing of steps a) and b) thereby generating the silk photoclick tattoo in the area of the subject's skin.

-22. (canceled)

A method of generating a silk photoclick volumetric image within a volume of an article, the method comprising the following steps:

• a) administering a silk photoclick article ink to a volume, the silk photoclick article ink comprising modified silk nanoparticles and photoclick chromophores, the modified silk nanoparticles comprising modified silk fibroin functionalized with a plurality of first photoclick chemistry pair moieties, wherein the modified silk nanoparticles are biocompatible and bioresorbable, the photoclick chromophores comprising a second photoclick chemistry pair moiety;
• b) exposing the silk photoclick article ink within the volume to light having a predetermined wavelength for a predetermined exposure length and a predetermined exposure intensity, thereby initiating a known photoreaction and covalently bonding at least a portion of the photoclick chromophores to at least a portion of the modified silk nanoparticles,
• the administering and exposing of steps a) and b) thereby generating the silk photoclick volumetric image within the volume of the article.

-30. (canceled)