In situ generation of Ag nanoparticles during photopolymerization by using newly developed dyes?based <scp>three?component</scp> photoinitiating systems and the related <scp>3D</scp> printing applications and their shape change behavior

Silver nanoparticles (AgNPs) play a crucial role in biology and medical research as their extensive efficient antibacterial activity high electrical thermal conductivity. However, the generation of them with certain morphology under mild conditions (under air, solvent-free, room temperature, etc.,) is still huge challenge. Herein, simple one-step method proposed to generate AgNPs situ at temperature air by combining photopolymerization process formation within few minutes. In detailed, 12 different dyes based on 2,5-diethylene-cyclopentan-1-one were first synthesized used high-performance type II photoinitiator. When using conjunction bis-(4-tert-butylphenyl) iodonium hexafluorophosphate (Iod) ethyl 4-dimethylaminobenzoate (EDB), they can effectively boost free radical (FRP) polyethylene glycol diacrylate (PEG-DA) cationic (CP) 3,4-epoxycyclohexylmethyl-3,4-epoxycyclohexane carboxylate (EPOX) upon irradiation LED@405 nm. Furthermore, all formulations containing/without be successfully perform direct laser write experiment. even if obtained 3D patterns exhibited reversible swelling performance shape-memory effects caused dehydration for access 4D printing, presence will affect these properties.