1 hydroxycyclohexyl phenyl ketone

ZrO₂ nanocomposites were prepared from a solution with 30 wt% 10 nm ZrO₂ NPs dispersed in MIBK, which were purchased from Ditto Technology (DT-ZROSOL-30MIBK (N10)). Dipentaerythritol penta-/hexa-acrylate and 1-hydroxycyclohexyl phenyl ketone were purchased from Sigma‒Aldrich and used as a monomer and a photoinitiator, respectively. MIBK, MEK, and acetone were purchased from Duksan General Science. h-PDMS, a vinylmethyl copolymer (VDT-731), a platinum catalyst (SIP6831.2), and a siloxane-based silane reducing agent (HMS-301) were purchased from Gelest. 2,4,6,8-Tetramethyl-2,4,6,8-tetravinylcyclotetrasiloxane and toluene, which were used as a modulator and a solvent, were purchased from Sigma‒Aldrich and Samchun Chemicals, respectively. PDMS, a silicone elastomer base, and a silicone elastomer curing agent were purchased from Dow Corning (SYLGARD™ 184 Silicone Elastomer Kit). The trichloro(1H,1H,2H,2H-perfluorooctyl)silane used for hydrophobic coating was purchased from Sigma‒Aldrich. toluene and n-hexane were purchased from Samchun Chemicals.

Acrylamide (purity ≥98.0%), dimethyl sulfoxide (DMSO, ≥99.7%), poly(ethylene glycol) diacrylate (PEGDA, M_n = 700), 4-hydroxy-TEMPO (97%), benzyl viologen dichloride (97%), LiTFSI (99.95% trace metals basis) and 1-Hydroxycyclohexyl phenyl ketone (99%) were purchased from Sigma-Aldrich (Seoul, Korea). Poly(sodium 4-styrene sulfonate) (PSSNa, M_w ~ 1,000,000, 20 wt% in H₂O) solution was purchased from Tosoh Corporation (Tokyo, Japan). A PSSA solution was prepared by treating PSSNa with an ion-exchange resin (TRILITE UPRC100U, Samyang Corporation). MXene (Ti₃C₂T_X, 3–5µm) was purchased from Invisible Corporation (Suwon, Korea). MXene was made by etching Ti₃AlC₂ powder with 40% HF solution for 72 h.