Structured Layer of Rhenium Dye on SiO2 and TiO2 Surfaces by Langmuir–Blodgett Technique
Citations Over Time
Abstract
We demonstrate the Langmuir-Blodgett assembly of two rhenium-bipyridine complexes containing a flexible or an aromatic bridge, and transfer of the monolayer to SiO2 and single crystal TiO2 substrates. Both of the complexes (ReEC and Re2TC) have a hydrophilic carboxylic acid group, which preferentially anchors into the water subphase, and forms stable monolayers at surface pressures up to 40 mN/m. The optimum conditions for the formation of complete monolayers of both ReEC and Re2TC were identified through characterization of the morphology by atomic force microscopy (AFM), the thickness by ellipsometry, and the surface coverage by X-ray photoelectron spectroscopy (XPS). X-ray reflectivity measurements (XRR) are consistent with the orientation of the molecules normal to the substrate, and their extension to close to their calculated maximum length. Parameters derived from XRR analysis show that there is a higher packing density for Re2TC monolayers than for ReEC monolayers, attributable to the more rigid bridge in the Re2TC molecule.
Related Papers
- → Molecules for Langmuir—Blodgett film formation(1990)8 cited
- → Monolayers Langmuir-Blodgett Films of Synthetic Artificial Mimic Molecules That Resemble the Following Tetraether Lipids on Silicon Wafers(2015)4 cited
- → X-Ray Optics in Langmuir-Blodgett Films(1988)4 cited
- → Structural characterization of langmuir‐blodgett films of a cellulose derivative by X‐ray photoelectron spectroscopy(1994)5 cited
- → Observation of polyamic acid alkylamine salts (PAAS) Langmuir/Langmuir-Blodgett films using Brewster angle microscopy (BAM)(2002)