Nonlinear spectroscopy and microscopy studies of fluidic frictions on organic films and of molecular pattern formation by fast micro-contact printing
(2009)
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- Authors
- Supervisors
- Peremans, André
- Abstract
- (en) We develop on the one hand, theoretical tools allowing us to extract the molecular conformation from sum-frequency and second harmonic generation spectroscopy (SFG & SHG) data. First, the SHG spectroscopy is employed to characterize the reorientation of rhodamine 6G dye molecules induce by the friction of a moving fluid at the solid-liquid interface. This observation enables to revisit the “no slip” condition of the fluid mechanics theory. Then, we study the formation kinetics of patterned self-assembled monolayers (SAM) realized by micro-contact printing (µcp). We demonstrate the possibility of building highly structured SAMs within time durations as short as 1 second. These layers possess a conformational quality identical to those resulting from standard immersion methods and may furthermore present molecular patterns of micrometric dimensions. Next, we show the possibility of realizing solid supported patterns of amphiphilic monolayers by combining µcp and Langmuir-Blodgett methods. Finally, the development of a SFG microscope is presented along with the first images of SAMs patterns realized by µcp method.
- Affiliations
Unamur -
Citations
Lis, D. (2009). Nonlinear spectroscopy and microscopy studies of fluidic frictions on organic films and of molecular pattern formation by fast micro-contact printing. https://hdl.handle.net/2078.5/128948