Date of Thesis

Fall 2021

Description

One of the greatest challenges in designing materials is developing a controlled platform for understanding structure-property relationships. Insight into the properties of complex solid-state structures can be near impossible without control of the synthetic approach. One attractive design utilizes covalent organic frameworks (COFs), self- assembled crystalline multidimensional polymers formed from simple starting materials. The inherent high internal surface areas and porosity are attractive for a wide range of applications, such as catalysis and separation. In addition to porosity, COFs also possess crystalline order, stemming from both linkage reversibility and intermolecular stacking energies. Controlling these intermolecular interactions in covalent systems, beyond simple van der Waals forces, is an outstanding challenge. Modulation of polymer-layer interactions in COFs for tunability and structure control can be investigated by incorporating host-guest complexation. Using cage-like molecule ExCage6+ at the COF building block interface introduces an additional means to bridge the gap in 2D COF interlayer spacing. In this work, host-guest complexes were developed for multidimensional polymerization and progress towards noncovalently functionalized porous polymer networks known as jacketed covalent organic frameworks (J-COFs) is presented.

Keywords

Covalent Organic Frameworks, Host-Guest Chemistry, Porous Materials, Supramolecular Chemistry

Access Type

Masters Thesis (Bucknell Access Only)

Degree Type

Master of Science

Major

Chemistry

First Advisor

Brian Smith

Second Advisor

Hasan Arslan

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