Polyhedral oligomeric silsesquioxanes: a new class of amphiphiles at the air/water interface.
Insoluble films of trisilanolisobutyl-POSS and octaisobutyl-POSS at the air/water interface are investigated by means of surface pressure - area per molecule isotherm (Pi - A) and Brewster angle microscopy (BAM). Analysis of the experimental results shows the partial cage molecule, trisilanolisobutyl-POSS, is a surface-active molecule that self-assembles into uniform monolayer upon compression; but the fully condensed cage molecule, octaisobutyl-POSS, is nonamphiphilic.
Deng
Jianjun
J
Department of Chemistry, Virginia Polytechnic Institute and State University, Blacksburg, Virginia 24061, USA.
Polidan
Joseph T
JT
Hottle
John R
JR
Farmer-Creely
Catherine E
CE
Viers
Brent D
BD
Esker
Alan R
AR