In this paper, an anionic metal-organic framework Bio-MOF-1 (Zns(ad)(4)(BPDC)(6)O center dot 2Me(2)NH(2)) and a luminescent complex (Sm3+ doped TiO2, labeled as Sm3+@TiO2) have both been prepared as previous reports and their photophysical properties are investigated. Subsequently, Tb3+ is introduced to Bio-MOF-1 via cation exchange and the obtained Tb3+@Bio-MOF-1 can exhibit characteristic emission bands of Tb3+. Exposed to varying concentration of oxygen, the luminescent intensity of Tb3+ decreased as increasing oxygen content. However, the luminescent intensity of as-prepared Sm3+@TiO2 is enhancing with the increase of oxygen content. With the assistance of IPTES (3-Isocyanatopropyltriethoxysilane) and TTA (2-Thenoyltrifluoroacetone), Sm3+@TiO2 was assembled with Tb3+@Bio-MOF-1 successfully. As we had expected, the hybrid shows a ratio-dependent oxygen sensing performance, which makes it a good candidate for sensing of oxygen. (C) 2017 Elsevier Inc. All rights reserved.