posted on 2014-12-23, 00:00authored byChristina
M. Thompson, Gregory T. McCandless, Sumudu N. Wijenayake, Obada Alfarawati, Mohammad Jahangiri, Atef Kokash, Zachary Tran, Ronald A. Smaldone
Herein we report a series of porous
organic polymers (POPs) synthesized
through a Sonogashira cross-coupling reaction containing hexaphenylbenzene
(HEX) and hexabenzocoronene (HBC) with varying peripheral substitution.
We observed vastly different gas sorption properties depending on
substituent size and the extent of conjugation in the monomer core
structure with BET surface areas ranging from 320 m2/g
for HBC-POP-4 to 1140 m2/g for HEX-POP-3. In order to more
clearly understand the effects of functional group substitution on
the properties of these materials, we have characterized these POPs
using N2, CO2, and H2 sorption measurements,
powder X-ray diffraction, FT-IR spectroscopy, TGA, and EDX.