Browsing Chemistry by Author "Thoma, Janine L."
Now showing items 1-4 of 4
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Characterization of the Long-Range Internal Dynamics of Pyrene-Labeled Macromolecules by Pyrene Excimer Fluorescence
Farhangi, Shiva; Casier, Remi; Li, Lu; Thoma, Janine L.; Duhamel, Jean (American Chemical Society, 2016-12)The long-range internal dynamics (LRID) of 74 pyrene-labeled macromolecules (PyLMs) were characterized in four solvents representing a broad range of dielectric constants equal to 2.4 (toluene), 7.6 (tetrahydrofuran, THF), ... -
DiPyMe in SDS Micelles: Artifacts and Their Implications in the Interpretation of Micellar Properties
Fowler, Michael; Hisko, Victoria; Henderson, Jason; Casier, Remi; Li, Lu; Thoma, Janine L.; Duhamel, Jean (American Chemical Society, 2015-11-10)This study provides experimental evidence that di(1-pyrenylmethyl) ether or DiPyMe, a well-known fluorescent probe employed to determine the microviscosity of surfactant or polymeric micelles, is being hydrolyzed in the ... -
Long-Range, Polymer Chain Dynamics of a "Stiff" Polymer. Fluorescence from Poly(isobutylene-alt-maleic anhydride) with N-(1-Pyrenylmethyl)succinimide Groups
Thoma, Janine L.; Duhamel, Jean; Li, Mei-Jin; Bertocchi, Michael J.; Weiss, Richard G. (American Chemical Society, 2017-04-25)The steady-state fluorescence (SSF) spectra and time resolved fluorescence (TRF) decays of five poly(isobutylene-alt-maleic anhydride) copolymers (PIMA), randomly labeled with N-(1-pyrenyl methyl)succinimide groups (Py-PIMA), ... -
Quantitative Characterization of the Molecular Dimensions of Flexible Dendritic Macromolecules by Pyrene Excimer Fluorescence
McNelles, Stuart A.; Thoma, Janine L.; Adronov, Alex; Duhamel, Jean (American Chemical Society, 2018-02-12)Eight pyrene labeled dendrons (PyLDs) were prepared with a polyester backbone of bis(hydroxymethyl)propionic acid and the monomer and excimer fluorescence decays of the PyLDs were acquired and fitted according to the ...