Abstract:Photochromic hexaarylbiimidazoles (HABIs) enable reversible
transformation between HABI and triphenylimidazole radicals (TPIRs) upon
UV light irradiation, which have been applied in photo-patterning,
super-resolution imaging, photoinduced self-healing materials and
photomechanical hydrogels. Here, we designed and prepared a novel kind
of polyurethane (PU) photoresist based on photo-cleavable HABI
cross-linkers (HABI-PU), linear PU backbone and additive
tert-butylhydroquinone (TBHQ) radical quencher. Upon UV li… Show more
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