POLY 524 |
| Arrangement of tripod dyes, N1,N3,N5-tris(4-(5-(3,4,5-tridodecyloxyphenyl)-1,3,4-oxadiazol-2-yl)phenyl)benzene-1,3,5-tricarboxamide, A3O-3 (amide linkage), and tris(4-(5-(3,4,5-tridodecyloxyphenyl)-1,3,4-oxadiazol-2-yl)phenyl)benzene-1,3,5-tricarboxylate, E3O-3 (ester linkage), at the air-water interface was investigated by Langmuir Blodgett film balance. Surface pressure (П) vs. surface area (A) isotherm of tripod dyes shows sharp transition at 180Å2/molecules for E3O-3 and 200 Å2/molecules for A3O-3. The difference is due to the hydrogen bonding capability of the tripod dye molecules at the air-water interface. Line shape of the aligned tripod dyes transferred on the graphite was observed by SPM (scanning probe microscope). The density of lines increased and the lines rearranged into one direction by decreasing the surface area. It is observed that a C-H stretch peak shift by decreasing the surface area through an ATR (attenuated total reflectance) measurement. |
|
Organic Thin Films for Photonic Applications
6:00 PM-8:00 PM, Tuesday, 12 September 2006 Moscone Center -- Hall D, Poster
Division of Polymer Chemistry |