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- W1968798927 abstract "NOESY−HSQC 3D-NMR and NOESY 2D-NMR techniques have been used on a 750 MHz spectrometer to study the chain conformations of different generation DAB dendrimers (poly[propylene imine] dendrimers) in chloroform and benzene solutions. The high-field multidimensional NMR techniques provided the chemical shift dispersion needed to resolve all of the unique resonances in the dendrimers. By studying the NOE interactions among dendritic chain protons, information about through space interactions between protons on different parts of the dendrimer chain is obtained, which is directly related to the conformation of the dendrimer. These experiments also give further proof of the chemical shift assignments obtained from the HMQC-TOCSY 2D and 3D NMR experiments. The concentration effects on chemical shifts have also been observed, revealing information about the interactions between solvent and different parts of dendrimer molecules. These studies clearly show for DAB dendrimers, that folded chain conformations can occur in nonpolar solvents such as benzene and extended chain conformations are predominant in polar solvents such as chloroform." @default.
- W1968798927 created "2016-06-24" @default.
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- W1968798927 date "2001-05-01" @default.
- W1968798927 modified "2023-10-16" @default.
- W1968798927 title "Structure and Conformation of DAB Dendrimers in Solution via Multidimensional NMR Techniques" @default.
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- W1968798927 doi "https://doi.org/10.1021/ja002824m" @default.
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