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In this paper, we report the design, synthesis and properties of novel cross-linked benzocyclobutene resin with m-carborane cages and a siloxane backbone. The synthesis process of the m-carborane derivative containing the benzocyclobutene functional group was simple and efficient. 1H, 13C, and 29Si NMR confirmed the structure of the dibenzocyclobutene-functional m-carborane (DBMC). The novel polymer film was readily fabricated through ring-opening polymerization of the benzocyclobutene unit. Differential scanning calorimetry (DSC) and FT-IR were used to study the curing behavior. Thermogravimetric analysis (TGA) showed that the cured film had outstanding thermal stability. The cross-linked film also exhibited good shape-memory property, and had the capacity to address challenges in advanced aerospace. The boron in the cured DBMC was abundant and showed homogeneous distribution at the …