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By G.R. Newkome

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Extra resources for Advances in Dendritic Macromolecules : 1995 (Advances in Dendritic Macromolecules) (Advances in Dendritic Macromolecules)

Example text

7. Phys. Chem. 1993,97, 293. This Page Intentionally Left Blank CASCADE MOLECULES: BUILDING BLOCKS, MULTIPLE FUNCTIONALIZATION, COMPLEXING UNITS, PHOTOSWITCHING Rolf Moors and Fritz VogtIe ABSTRACT I. INTRODUCTION A. Repetitive Synthesis II. TOSYLAMIDE CASCADES A. Divergent Synthetic Strategy B. Convergent Synthetic Strategy III. POLYAMINE DENDRIMERS A. Tris(2-aminoethyl)amine as Core Unit B. Pentaethylenehexamine as Core Unit C. Cyclam and Hexacyclene as Core Units Advances in Dendritic Macromolecules Volume 2, pages 41-71.

Therefore, there is no critical micelle concentration and no distortion at high concentration. The Convergent-Growth Approach 21 The dendritic micelle 20 was found to solvate hydrophobic molecules, such as pyrene, and a dramatic increase in the saturation concentration of hydrophobic molecules in water was observed. This increase was of a magnitude similar to that observed for traditional micelles derived from sodium dodecyl sulfate (SDS). However, unlike SDS micelles, 20 demonstrated solubihzing ability at concentrations as low as 5 x 10"^ M.

There is, however, one unique and critical difference. The structure is static and does not vary with concentration. Therefore, there is no critical micelle concentration and no distortion at high concentration. The Convergent-Growth Approach 21 The dendritic micelle 20 was found to solvate hydrophobic molecules, such as pyrene, and a dramatic increase in the saturation concentration of hydrophobic molecules in water was observed. This increase was of a magnitude similar to that observed for traditional micelles derived from sodium dodecyl sulfate (SDS).

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