Neutron Reflectivity and Structure of Polyether Dendrimers as Langmuir Films Academic Article uri icon

abstract

  • Neutron reflectivity and Π-A isotherm measurements of Langmuir films of polyether dendrimers based on 3,5-dihydroxybenzyl alcohol have elucidated the structure of these interesting molecules at the air-water interface. The neutron reflectivity measurements indicated a collapse of the fourth-generation monodendron, [G-4]-OH, to a bilayer structure. The molecules in the layer next to the water interface were ellipsoidal in structure due to compression and contained a volume fraction of about 25% of the substrate water. The molecules in the layer next to air were spherical with a diameter of 21 Å and contained no water. Isotherm measurements of the monodendron and tridendron series indicated scaling relationships between the area per molecule and the molecular weights of these species. © 1995 American Chemical Society.

author list (cited authors)

  • Saville, P. M., Reynolds, P. A., White, J. W., Hawker, C. J., Frechet, J., Wooley, K. L., Penfold, J., & Webster, J.

citation count

  • 75

publication date

  • May 1995