One step conversion of bio-based magnolol into low k materials at high frequency

Abstract

A facile one-pot conversion of a bio-based magnolol gave a functional monomer with curable benzocyclobutene groups, which was then thermally polymerized to form a cross-linked resin, displaying a very low dielectric loss of 1.0 × 10⁻³ at a frequency of 10 GHz and a dielectric constant of 2.78, as well as exhibiting good dimensional stability with a CTE of 46 ppm °C⁻¹. These results indicate that the bio-based monomer has potential application as an encapsulation material used in the microelectronics industry.