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For related recent investigations, see: (a) Hartwig, S.; Hecht, S. Macromolecules. DOI: 10. 1021/ma902018w. Published Online: Oct 30, 2009.
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75749119470
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1H NMR chemical shifts remained constant, indicating the absence of intermolecular interaction, i. e., hydrogen bonds, and hence exclude aggregation.
-
1H NMR chemical shifts remained constant, indicating the absence of intermolecular interaction, i. e., hydrogen bonds, and hence exclude aggregation.
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59
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75749133761
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Larger concentrations could hardly be realized as the solutions became rather viscous
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Larger concentrations could hardly be realized as the solutions became rather viscous.
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60
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75749149889
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3 was not used as an alternative solvent as the aggregation process should be pH-dependent.
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3 was not used as an alternative solvent as the aggregation process should be pH-dependent.
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75749113466
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This factor is based on the average chemical shift differences of all participating protons numbered in Figures 5-7, Due to the limited concentration range and the significant deviations of the chemical shift differences of the individual protons, no association constants were calculated as these individual or average values would have rather limited meaning. True association constants necessitate, for example, in depth isothermal titration calorimetry measurements
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This factor is based on the average chemical shift differences of all participating protons (numbered in Figures 5-7). Due to the limited concentration range and the significant deviations of the chemical shift differences of the individual protons, no association constants were calculated as these individual or average values would have rather limited meaning. True association constants necessitate, for example, in depth isothermal titration calorimetry measurements.
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