(619b) A Porous Organic Cage’s Structural Evolution through Time

The structural evolution of a Porous Organic Cage, CC3, was studied as a function of synthesis time. The evolution involved three crystal growth stages: rapid crystal growth at short times, crystal fragmentation, and dissolution at intermediate times, and crystal regrowth through Ostwald ripening at long synthesis times. A combination of experimental, and in silico calculations of nitrogen isotherms confirm the presence of both CC3a and CC3-amorphous phases present in samples synthesized for various times. Due to this mixture of phases, nitrogen and carbon dioxide adsorption was highly dependent on synthesis time. in silico CC3 models and simulations of XRD patterns coincide with experimental patterns indicating CC3a contracts at different synthesis times.