Charge transfer through and between molecules is central to many important processes in nature. In particular, studying the conductivity of single molecules can contribute to a better understanding of charge transfer through molecules, and also help develop better molecular wires and other building blocks of molecular electronics, light harvesting devices, etc. We will discuss the results of a number of different experiments designed to understand these processes at the single molecule level. We measure the conductivity of molecules using the STM break-junction method that utilizes repeatedly formed circuits where one or a few molecules are trapped between two electrodes, at least one of which has nanoscale dimensions. The statistical analysis of thousands of measurements yields the conductance of single molecules. Of particular interest is the role of the molecule-electrode contact, which we have investigated using specially designed linker groups, in conjugated organic oligomers, as well as the conductivity of Peptide Nucleic Acids (PNA). Experiments to probe charge transfer between molecules is made possible because STM can distinguish between oxidized and reduced porphyrin species on electrodes so that two-dimensional charge diffusion can be observed at the molecular level under electrochemical conditions.
Séminaire SPCSI - Informations pratiques
Entrée sur le site du CEA de Saclay pour les séminaires SPCSI
Afin de pouvoir entrer sur le site du CEA de Saclay veuillez adresser les données personnelles suivantes par courriel à Christine Prigian et Catherine Julien (secrétariat) un avis d’entrée vous sera alors délivré:
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Ces informations doivent être envoyées au mieux deux jours avant la date du séminaire.
Lors de votre venue vous devez vous présenter avec une carte d'identité ou un passeport en cours de validité. L'entrée sur le site se fait par l'entrée principale ou porte Nord (suivre le lien ci-dessous), un badge vous y sera remis. Demandez à l'accueil le Bât.466, ils vous renseigneront.
Les séminaires se déroulent au Bât. 466, pièce 111 (1er étage).
En cas de problème vous pouvez contacter le secrétariat au : 01 69 08 65 32 / 40 12.
Formalities for entering the CEA Saclay site for SPCSI seminars
To enter in CEA Saclay you need to send the following personal data to Christine PRIGIAN and Catherine Julien (secretariat):
Informations utiles/Practical informations - Contact
Informations: Access
Contact: Christine Prigian et Catherine Julien
Last Name :
First Name :
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These informations must be preferably sent at least two days before the seminar date.
When you come you must have a valid ID card or passport with you.
The entrance in CEA Saclay is through the main entrance or north entrance (see link below), a pass will be delivered. Ask at the “accueil” the path for the building 466. SPCSI seminars take place in room 111 (first floor).
Any questions/troubles do not hesitate to contact our secretariat : 33 (0)1 69 08 65 32 / 40 12.
