Publications by authors named "Maxwell R Kimball"
Magn Reson Chem
November 2024
Article Synopsis
- HRMAS (high-resolution magic angle spinning) NMR spectroscopy improves the resolution of H and C NMR spectra in low-density polyethylene (LDPE) by allowing better visibility of molecular signals through swelling the polymer with solvents.*
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- The technique reduces anisotropic interactions that typically broaden signals, enabling a clearer understanding of the polymer's swelling behavior and the effectiveness of various solvents.*
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- HRMAS also demonstrates that the metallocene nickelocene can penetrate and disperse within the LDPE network without altering its structure, which aids future research into catalytic polymer degradation.*
Phys Chem Chem Phys
February 2024
Article Synopsis
- 73% of NMR-active nuclei are quadrupolar with spin > 1/2, which often causes broadening of signals leading to low sensitivity and resolution.
- This study explores advanced techniques like magic angle spinning (MAS) and DE-RESPDOR for detecting spin 3/2 quadrupolar nuclei indirectly through spin interactions.
- Experimental results showed enhanced detection of nuclei like Cl, Br, and Cu in various compounds, achieving improved sensitivity and valuable structural insights, with potential applications for higher spin quadrupolar nuclei.
