Novel materials for molecular electronics and their characterization

Abstract

Defect-free diacetylene (DA) Langmuir-Blodgett films polymerized on a air/water interface have various applications in biosensors, membrane physics or low-dimensional physics. Polymerization of DA monolayers is in general way characterized by optical spectroscopy. In this study for evaluation of photopolymerization process for the first time the Maxwell displacement current (MDC) measuring technique was used. In experiment MDC flows through the metal electrode/air gap/Langmuir monolayer/water surface structure. The effect of polymerization as well as the phase transition of polymerized DA was observed. Moreover PDA domain creation and homogenization was registered.