To obtain bulk polymer specimens from the formulations, the formulation components were molten and homogenized as described above and poured into a custom-built heated mold, which allows accurate temperature control (Supplementary Figures and). The irradiation protocol was optimized to ensure homogeneous curing from the liquid crystalline state without temperature variation due to evolving polymerization heat. The sample thickness was approximately 2 mm. The mold was preheated to 100 °C and an initial irradion step was conducted for 300 s at 1.5 mW cm -2 using a 405 nm LED light source. Afterwards, a second irradiation was employed at 290 mW cm -2 for 180 s using a 365 nm LED light source. These irradiation steps were repeated after the specimens were flipped carefully in the mold.