A series of polyimide (PI)/silver composite films incorporating μm-sized metallic silver particles (Ag-MPs) were prepared using matrices of sulfur-(SD), fluorine-(TF), and silicon-containing (SIM) PIs as well as an immiscible blend of SD-and TF-PIs (b-SF). The thermal conductivity (λ  ) of the composited films accords well with the calculated value (λ cal ) based on the Bruggeman model below the particle contents () of 30 vol%, whereas the composite films of SD/Ag and b-SF/Ag exhibited extraordinarily larger λ  values than λ cal in the range of >30 vol%. Moreover, the λ  s of SD/Ag films with uniform dispersion of Ag-MPs are almost equivalent to those of b-SF/Ag films in which Ag-MPs are selectively dispersed in the SD phase. In contrast, the λ  s of SIM/Ag films with homogeneous dispersion accord well with the λ cal and much smaller than those of SD/Ag and b-SF/Ag. These facts indicate that effective thermal conductive paths were spontaneously generated in SD/Ag films as well as in b-SF/Ag films.

Deselenylation reaction of β-chloro- and β-oxyselenides proceeded efficiently by treatment with tetrabutylammonium iodide (TBAI) to afford alkenes in good yields. It was established that selenenyl iodides were formed in these reactions. Catalytic transformation of β-chloro- and β-oxyselenides to alkenes was also developed.

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The mechanism of the deselenylation reaction of β‐chloro‐ and β‐oxyselenides in the presence of tetrabutylammonium iodide is discussed.