Design and gas sorption study of c-alkylresorcin[n]arene-based cocrystals
Abstract
[ACCESS RESTRICTED TO THE UNIVERSITY OF MISSOURI AT AUTHOR'S REQUEST.] Supramolecular chemistry is the study of how to form complexes through molecular self-assembly and intermolecular bonding. Our research group has been doing a lot supramolecular research based on macrocycles such as calixarenes, pyrogallolarenes and resorcinarens. This research is interested in formation of novel C-alkyresorcin[n]arene( n=4,6) based cocrystals. The basic plan is to design and synthesize cocrystals, then analyze the crystal structure via single crystal X-ray diffraction technique, and determine if the novel cocrystal has the ability to absorb gases such as carbon dioxide and nitrogen. Chapter two is about the cocrystallization of six different C-alkylresorcin[4]arene according the chain length and guest molecule 1-(2-pyridylazo)-2-naphthol( PAN) in four solvent systems. Five successfully synthesized cocrystals' structure and synthesis are discussed. Chapter three talks how to use cocrystallization as a separation method to separate C-ethylresocin[6]arene from C-ethylresorcin[4]arene. Three noval C-ethylresorcin[6]arene based cocrystals from three different solvents are discussed. Chapter four investigates the cocrystallization between C-ethylresorcin[n]arene (n=4, 6) with 4, 4'-bipyridine. It discusses how solvent and component concentration affect such cocrystallization. Chapter five uses cocrystal formed from C-ethylresorcin[6]arene and 1,2-bis(4-pyridyl)ethane in acetone as the gas sorption candidate to test its ability to absorb gases after solvent removal. The conditions of removing solvents and gas sorption results are discussed.
Degree
Ph. D.
Thesis Department
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