Palladium nanobars were synthesized as described in reference 39. A stock solution of the reaction mixture for Co-DHBDC was prepared in DMF as described in above section. 0.5-1 mL of the reaction mixture was withdrawn in a 4 mL glass vial for each reaction and mixed with purified palladium nanoparticles (50-100 µL from a stock solution of 1-2 mg/mL corresponds to 0.5-1 OD measured at 520 nm). The reaction mixture was put under photothermal heating using 520 nm, or 660 nm LED (8 W/cm 2 ) at 100-120 °C for 2 h. The product was isolated via centrifugation at 9000-10000 × g for 2 mins, washed with DMF and methanol at least 3-4 times, and finally dispersed in desired solvents (e.g., methanol, ethanol, DMF etc.) or dried in a vacuum for 1 h to get as powder form for further studies.