“…Recently, composed of organic polymers into these metal oxides are especially popular because of improved mechanical, catalytic, electronic, and optical properties, in comparison with those of the pure component phases and related macro-and microcomposites. Great efforts have been made toward this trend, including the synthesis of MnO 2 [2 -3], ZrO 2 [4], ZnO [5] nanostructured films, etc. However, to our best knowledge, thus-formed films are rarely used as matrices to immobilize enzymes and to study the electron transfer mechanism of the immobilized enzymes with underlying electrode.…”