Benzene-1,3,5-triamine trihydrochloride (TAB, 46.5 mg, 0.2 mmol) and diformylfuran (DFF, 37.2 mg, 0.3 mmol) were suspended in a mixture of N,N-dimethylacetamide and propan-2-ol (1:1 v/v, 3 mL). After the mixture was sonicated for 20 minutes, the reaction tube was sealed and left at room temperature for 12 hours. The resulting COF@bio precipitate was isolated by vacuum filtration, washed with THF, methanol, and acetone, and dried at 60 °C under vacuum for 12 hours to yield the desired COF@bio. Further details regarding the preparation of the COF@bio complexes can be found in the supporting information.