Coordination polymer nanobamboos of {Fe_xIn_1-x}-MIL- 88B: Induced formation of a virtual in-MIL-88B

A precise fabrication of nanobamboo structures made from hybrid coordination polymers of the type {Fe_xIn_1-x}-MIL-88B is demonstrated. The compositions of the hybrid coordination polymer nanobamboos of {Fe_xIn_1-x}-MIL-88B (x=0.06, 0.19, or 0.75) are regulated by altering the amount of metal ions used in the reactions. Interestingly, the formation of a virtual In-MIL-88B (precise structure, {Fe_0.06In _0.94}-MIL-88B), which cannot be created in a typical reaction, is induced by the assistance of a Fe-MIL-88B structure. The a and c cell parameters of {Fe_0.06In_0.94}-MIL-88B are calculated at 10.95 and 19.86Å, respectively. These values of {Fe_0.06In _0.94}-MIL-88B are larger than those of pure Fe-MIL-88B owing to the large ionic size of In³⁺ within the framework. In bamboo: The preparation of nanobamboos of {Fe_xIn_1-x}-MIL-88B is demonstrated. The compositions of the nanobamboos are regulated by altering the amount of metal ions used during their preparation. In addition, the formation of a virtual In-MIL-88B, which is difficult to create in a typical reaction, is induced with the assistance of small amounts of Fe³⁺ ions.