POLYBRUSH

Dynamics in polymer brush-nanoparticle systems

 Coordinatore TECHNISCHE UNIVERSITAT BERLIN 

 Organization address address: STRASSE DES 17 JUNI 135
city: BERLIN
postcode: 10623

contact info
Titolo: Mrs.
Nome: Silke
Cognome: Hönert
Email: send email
Telefono: +49 30 314 79973
Fax: +49 30 314 21689

 Nazionalità Coordinatore Germany [DE]
 Totale costo 161˙968 €
 EC contributo 161˙968 €
 Programma FP7-PEOPLE
Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
 Code Call FP7-PEOPLE-2012-IEF
 Funding Scheme MC-IEF
 Anno di inizio 2013
 Periodo (anno-mese-giorno) 2013-04-02   -   2015-04-01

 Partecipanti

# participant  country  role  EC contrib. [€] 
1    TECHNISCHE UNIVERSITAT BERLIN

 Organization address address: STRASSE DES 17 JUNI 135
city: BERLIN
postcode: 10623

contact info
Titolo: Mrs.
Nome: Silke
Cognome: Hönert
Email: send email
Telefono: +49 30 314 79973
Fax: +49 30 314 21689

DE (BERLIN) coordinator 161˙968.80

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scattering    nanoparticles       surface    neutron    interactions    polymer    light    ray    brushes    brush    nanoparticle    dynamic    reflectometry    dynamics   

 Obiettivo del progetto (Objective)

'Polymer brushes are long polymer chains tethered to a surface by one end. They have applications in chemistry, engineering, medicine, microelectronics, etc. Many of these applications involve interactions between the brush and nanoparticles which are near or within the brush (for instance, when used to arrest toxic substances or to arrange nanoparticles in the patterned surface).

Structure of these composite brush-nanoparticle systems has been largely studied but only a few works have been carried out concerning their dynamics. To be able to design the systems for the applications efficiently, a good understanding of their dynamics is essential. This project aims to provide a comprehensive description of the dynamic behaviour of brush-nanoparticle systems as a function of key parameters such as nanoparticle size, concentration, and penetration depth, polymer chain molecular weight, and grafting density.

Gold nanoparticles within PDMAEMA brushes will be used as model systems and the different samples characterized using small angle x-ray scattering (SAXS), ultraviolet-visible spectroscopy (UV-Vis), atomic force microscopy (AFM), ellipsometry, x-ray reflectometry (XRR), and neutron reflectometry (NR). Thereafter, long- and short-time dynamics of brush and nanoparticles will be measured using the more recently developed techniques of evanescent wave dynamic light scattering (EWDLS), resonance enhanced dynamic light scattering (REDLS), and neutron spin echo under grazing incidence (GINSE).

This will allow to gain insight into particle-polymer brush interactions which will foster development of models that can be used to optimize current applications or even originate new ones.'

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