Skip to main content
Ir a la página de inicio de la Comisión Europea (se abrirá en una nueva ventana)
español es
CORDIS - Resultados de investigaciones de la UE
CORDIS
Contenido archivado el 2024-05-24

Light Induced Molecular Movements. Photo-gated devices

Objetivo

We intend to develop a new method, which uses light excitation to promote large conformational changes in suitable molecules (photoisomerizable or photochromic species) for controlling optically the motion and positioning of individual molecules with nanometric precision. To achieve this goal we adopt a strongly interdisciplinary approach in which physicists and chemists will collaborate together on 3 major themes: 1) movement of molecules and material in films and on surfaces; 2) transport of ions or of molecules in organized structures; 3) conduction across molecular wires containing a photoswitchable unit. The light induced movements will produce new interesting properties in the materials or open new technology for the construction of photo-gated devices.

OBJECTIVES
Understanding and controlling the movements of molecules on a surface or in organized matrices for the development of nanometric scale devices represents one of the ultimate goals of nanotechnology. We intend to show that under proper light excitation (wavelength, intensity gradient, polarization), using new photoactive compounds we can achieve the following objectives:1. Transport of ions or molecules in organized structures; 2. Light control of individual molecule motion at the nanometric scale; 3. Nanosized electronic device fabrication by light controlled positioning and self-assembly of molecules between electrodes.

Work will centre around the development of: a) junctions in which photoactive groups are responsible for different electrical conduction upon light excitation; b) light active systems able to orient and self assemble in order to form a bridge between two electrodes.

DESCRIPTION OF WORK
The project involves highly interdisciplinary research that will be carried out in a collaborative effort by all the teams involved. An important step will be the synthesis of specific molecules containing the photoactive groups. We intend to focus on azobenzene derivatives, but additional photochromic compounds will be considered that are known to undergo reversible conformational changes upon light excitation. In order to study the movement and positioning of molecules inside a matrix or on a surface we plan to attach a fluorescent dye to the photoisomerizable unit. This will make possible the detection of the displacement of the whole molecule. Under non-uniform NFO excitation the photoisomerizable molecules will move, and the distribution of fluorescent molecules in the matrix will no longer be uniform. From the distribution of fluorescence intensity we will deduce the distances and speed of molecular transport. The aim of our project is to develop a new technology of non-contact manipulation of (individual) molecules, which should permit the displacement, and positioning of (individual) functional species inside a matrix or in organized monolayers. The external input we wish to use is light and it will represent the fuel that the molecules (machines) will use for their movement. In this project we intend to achieve light controlled vectorial transport for information and electronic applications. Finally such photoinduced changes in conformation can be useful for the construction of a nanosized electronic device which uses light controlled positioning and self-assembly of molecules between electrodes.

We intend to develop:
a) photoswitchable junctions in which photoactive groups are responsible for different electrical conduction upon light excitation;
b) light active systems able to orient and self assemble in order to form a bridge between two metallic electrodes.

Ámbito científico (EuroSciVoc)

CORDIS clasifica los proyectos con EuroSciVoc, una taxonomía plurilingüe de ámbitos científicos, mediante un proceso semiautomático basado en técnicas de procesamiento del lenguaje natural. Véas: El vocabulario científico europeo..

Para utilizar esta función, debe iniciar sesión o registrarse

Programa(s)

Programas de financiación plurianuales que definen las prioridades de la UE en materia de investigación e innovación.

Tema(s)

Las convocatorias de propuestas se dividen en temas. Un tema define una materia o área específica para la que los solicitantes pueden presentar propuestas. La descripción de un tema comprende su alcance específico y la repercusión prevista del proyecto financiado.

Convocatoria de propuestas

Procedimiento para invitar a los solicitantes a presentar propuestas de proyectos con el objetivo de obtener financiación de la UE.

Datos no disponibles

Régimen de financiación

Régimen de financiación (o «Tipo de acción») dentro de un programa con características comunes. Especifica: el alcance de lo que se financia; el porcentaje de reembolso; los criterios específicos de evaluación para optar a la financiación; y el uso de formas simplificadas de costes como los importes a tanto alzado.

CSC - Cost-sharing contracts

Coordinador

UNIVERSITEIT VAN AMSTERDAM
Aportación de la UE
Sin datos
Dirección
SPUI 21
1012 WX AMSTERDAM
Países Bajos

Ver en el mapa

Coste total

Los costes totales en que ha incurrido esta organización para participar en el proyecto, incluidos los costes directos e indirectos. Este importe es un subconjunto del presupuesto total del proyecto.

Sin datos

Participantes (7)

Mi folleto 0 0