Understanding electrochemical properties of supported lipid bilayers interfaced with organic electronic devices

Polydopamine-Supported Lipid Bilayers

We report the formation of lipid membranes supported by a soft polymeric cushion of polydopamine. First, 20 nm thick polydopamine films were formed on mica substrates. Atomic force microscopy imaging indicated that these films were also soft with a surface roughness of 2 nm under hydrated conditions. A zwitterionic phospholipid bilayer was then deposited on the polydopamine cushion by fusion of...

Titration force microscopy on supported lipid bilayers.

The use of chemically modified atomic force microscopy (AFM) probes allows us to measure the surface charges of supported planar lipid bilayers with high sensitivity through the force spectroscopy operation mode. By controlling the chemistry of the tip, we can perform a classical analytical chemistry titration where the titration agent is a weak acid (attached to the AFM tip) with the particula...

Phase Behavior and Structure Properties of Supported Lipid Monolayers and Bilayers in Interaction with Silica Nanoparticles

In this study we investigate silica nanoparticle (SiO2NP) effects on the structure and phase properties of supported lipid monolayers and bilayers, coupling surface pressure measurements, fluorescence microscopy and atomic force microscopy. SiO2-NPs typically in size range of 10nm to 100 nm in diameter are tested. Our results suggest first that lipid molecules organization depends to their natu...

Salt-induced lipid transfer between colloidal supported lipid bilayers†

Transport properties of copper phthalocyanine based organic electronic devices

As a particular class of planar aromatic compounds, metal phthalocyanines are considered for numerous applications since they show a variety of interesting physical and chemical properties. In particular, the semiconducting copper phthalocyanine (CuPc), is employed in several optoelectronic devices such as organic light-emitting diodes or organic photovoltaic cells. The ambipolar charge carrier...