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Full-Text Articles in Physical Sciences and Mathematics
Structure Property Investigation And Applications Of Self-Assembled Triphenylamine Bis Urea Macrocycles, Md Faizul Islam
Structure Property Investigation And Applications Of Self-Assembled Triphenylamine Bis Urea Macrocycles, Md Faizul Islam
Theses and Dissertations
Porous organic crystals can be advantageous as nanoreactors and in sensing, separations, and storage. The Shimizu group utilizes bifurcated urea hydrogen bonding to direct the assembly small building block into pillars and columns affording functional porous crystals. Recently, our group has examined the incorporation of triphenylamines within the framework of bis-urea macrocycles. These macrocycles assemble into columns that contain the solvent of crystallization bound within the channels. Heating the crystals leads to removal of the solvent and activates the host for guest exchange by single-crystal-to-single[1]crystal transformations. Different electron accepting molecules can be encapsulated inside the pore of the host …
Construction Of Supramolecular And Coordination Compounds From Pyridyl Bis-Urea Macrocycles, Bozumeh Som
Construction Of Supramolecular And Coordination Compounds From Pyridyl Bis-Urea Macrocycles, Bozumeh Som
Theses and Dissertations
The self-assembly of macrocyclic molecules in solution and in the solid state modulates and in many cases enhances their properties for applications in sensing, catalysis and optoelectronics. The self-assembled structures are typically organized by non-covalent interactions such as hydrogen bonding, π-π stacking and dipole-dipole interactions. Our group has focused on the design and synthesis of bis-urea macrocycles that can self-assemble into solid cylinders or tubular structures affording crystalline materials. These macrocycles consist of two urea groups and two rigid C-shaped spacers. Easy functionalization of this system enables access to bis-urea macrocycle structures that could serve as molecular reactors, coordinating ligands …
Properties And Applications Of Self-Assembled Benzophenone Bis-Urea Macrocycles, Arthur Ariston Korous
Properties And Applications Of Self-Assembled Benzophenone Bis-Urea Macrocycles, Arthur Ariston Korous
Theses and Dissertations
Supramolecular chemistry is a vast multidisciplinary field with great potential and application. It is driven by one simple concept, the self-assembly of small building blocks into larger complex architectures without application of external force. This thesis highlights previous applications of supramolecular chemistry in addition to new potential properties and applications. Recently, the Shimizu group reported a self-assembled benzophenone bis-urea macrocycle (host 1) that facilitated the selective oxidation of an encapsulated alkene when UV-irradiated in an oxygen atmosphere to afford products that are typically observed in radical mediated reactions.1 Surprisingly, the host displayed a stable room temperature radical upon UV irradiation. …