As eries of nickel-decorated covalento rganic frameworks, NiCl@RIO-12, were prepared using the post-synthetic modification strategy,t hat is, by reactingN iCl 2 with pristine RIO-12 under alkaline conditions. Interestingly,t hey retained their crystallinity andt he amount of nickel incorporated could be tuned from 3.6 to 25 wt %a ccording to the reaction conditions. The incorporation of ah igher amount of nickel in NiCl@RIO-12 consistently led to al ower Brunauer-Emmett-Teller surfacea rea. Additionally,n oa gglomeration of nickel particles was found and ar elativelyh omogeneous dispersion of nickel could be ascertained by SEM and TEM-EDS. The paramagnetic material exhibited promising catalytic activity in Suzuki-Miyaura cross-couplingu nder microwave heating. Thus,N iCl@RIO-12 notably demonstrated good thermal stability and its recyclability showed no substantial loss of activity after 3cycles.
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