Synthesis and characterization of adamantane and tricyclodecane-containing epoxy resin for optoelectronics applications

Abstract Adamantane-based epoxy resin (ADEP) and tricyclodecyl modified adamantane-based epoxy resin (ADTCDEP) were synthesized and their chemical structures were confirmed by FT-IR, 1 H, and 13 C NMR spectroscopy. The morphological, thermal, dielectric, and optical properties of ADEP and ADTCDEP were studied. The introduction of adamantane and tricyclodecane groups into the chain of epoxy resins improves thermal, mechanical, and dielectric properties. In addition, UV–vis transmission spectroscopy showed that the tricyclodecyl-containing epoxy membrane exhibited novel UV filtering properties and thermo-oxidative stability. ADEP exhibits novel UV filtering properties, and the cut-off wavelength λ c can be changed by simply changing the heat-aging temperature. ADTCDEP maintains approximately 85 % transmittance in the visible region (700 nm) and exhibits good heat resistance and better transmittance than EP904 even after heat aging in air at 120 °C/168 h.