Nuclear magnetic resonance studies of complex materials systems: from amplification to anisotropy

Nuclear magnetic resonance (NMR) spectroscopy;nuclear magnetic resonance spectroscopy;anisotropic particles;chemical amplification

Vartanian, Ariane M

关键词: Nuclear magnetic resonance (NMR) spectroscopy;    nuclear magnetic resonance spectroscopy;    anisotropic particles;    chemical amplification;   

Others  :  https://www.ideals.illinois.edu/bitstream/handle/2142/90927/VARTANIAN-DISSERTATION-2016.pdf?sequence=1&isAllowed=y

美国|英语

来源: The Illinois Digital Environment for Access to Learning and Scholarship

【 摘 要 】

This dissertation explores complex materials systems, with a special focus on developing nuclear resonance spectroscopy (NMR) techniques to decipher chemical environments at the molecular level. Chapter 1 describes the design and synthesis of a two-state materials system based on an autocatalytic, positive feedback loop that amplifies a rare input into a massive output. Chapters 2 - 4 probe nanoparticle systems with shape or functional anisotropy. Chapter 2 details new approaches to add functionality to shape-anisotropic particles. Chapter 3 establishes NMR spectroscopy as a powerful tool for interpreting the ligand shell morphology, spatial arrangement, dynamics, and distinct chemical environments that are trademarks of shape- and functionally-anisotropic particles. Chapter 4 exploits the heterogeneous reactivity of shape-anisotropic particles to fabricate sophisticated, supramolecular building blocks that can form dynamic assemblies controlled by their association constants. Chapter 5 builds on the robust NMR techniques in the preceding chapters to analyze complex nano-bio interactions that are otherwise difficult to probe.