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Full-Text Articles in Physical Sciences and Mathematics
Dynamic Nmr Study Of Bond Rotational Activation Parameters In Micelles, Dietmar A. Leitner
Dynamic Nmr Study Of Bond Rotational Activation Parameters In Micelles, Dietmar A. Leitner
Dissertations and Theses
The behavior of surfactants in solution has been and still is of scientific, technological, and industrial interest. The micelle forming compounds sodium N-( octyloxycarbonyl)sarcosinate (NaOcSarc), and sodium N-(decyloxycarbonyl)sarcosinate (NaDecSarc) show in aqueous solution two 1H NMR N-methyl peaks arising from a possible cis- or trans-conformation. The relative population of the N-methyl peaks depends mostly on the concentration of surfactant indicating micelle formation. Upon heating the two peaks start to coalesce and finally appear as one single peak. The temperature range in which this phenomenon occurs is from 25°C to 65°C. The primary interest of this study was to determine …
The Synthesis And Chemistry Of N-Chlorosulfenylaziridines, Michael Claude Hare
The Synthesis And Chemistry Of N-Chlorosulfenylaziridines, Michael Claude Hare
Dissertations and Theses
Thiazyl chloride, the monomer of trichlorotrithiazene, reacts with fluorinated olefins to form N-chlorosulfenylaziridines. Four members of this new class of compounds have been prepared. Fluorine NMR, carbon-13 NMR, mass spectrometry, infrared spectroscopy, and elemental analysis have been used to characterize these compounds.
Theoretical And Experimental Evaluation Of Hysteresis In Atmospheric Chemistry, Theodore Alan Haigh
Theoretical And Experimental Evaluation Of Hysteresis In Atmospheric Chemistry, Theodore Alan Haigh
Dissertations and Theses
This treatise is a recapitulation of the theoretical and experimental study of hysteresis in atmospheric kinetics. The original problem arose from a theoretical study of a series of reactions for clean air. Upon evaluation a bistable equilibrium was predicted. The steady-state analysis had delineated a metastable region for the set of reactions. This bounded region is the hysteresis that this research project evaluated.
Preparation Of Electron Donor And Acceptor Molecules For Porphyrin Derivatization, Christoph Hoefler
Preparation Of Electron Donor And Acceptor Molecules For Porphyrin Derivatization, Christoph Hoefler
Dissertations and Theses
Porphyrins derivatized with electron donating and electron withdrawing groups can be used for artificial photosynthesis. Four new compounds, two electron donors and two electron acceptors, have been synthesized for prospective porphyrin linkages.