PHOTOPATTTOCELL

Photopatterning of Cellulose Films for Creation of 2- and 3-Dimensional Nanostructures

Coordinatore	TECHNISCHE UNIVERSITAET GRAZ    more  Organization address address: Rechbauerstrasse 12 city: GRAZ postcode: 8010 contact info Titolo: Mr. Nome: Gerald Cognome: Pichler Email: send email Telefono: 433169000000
Nazionalità Coordinatore	Austria [AT]
Totale costo	75˙000 €
EC contributo	75˙000 €
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-2013-CIG
Funding Scheme	MC-CIG
Anno di inizio	2013
Periodo (anno-mese-giorno)	2013-09-01   -   2016-08-31

 Partecipanti

#	participant	country	role	EC contrib. [€]
1	TECHNISCHE UNIVERSITAET GRAZ  Organization address address: Rechbauerstrasse 12 city: GRAZ postcode: 8010 contact info Titolo: Mr. Nome: Gerald Cognome: Pichler Email: send email Telefono: 433169000000	AT (GRAZ)	coordinator	75˙000.00

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 Obiettivo del progetto (Objective)

'While photolithographic techniques are well established for patterning of semiconductors, they have not been employed for polysaccharide based materials to a large extent. The main idea of this project is to generate nano-patterned cellulose thin films using ideas and concepts from semiconductor industry to create 2 and 3 dimensionally structured cellulose surfaces. As starting material for the generation of cellulose surfaces, trimethylsilyl cellulose (TMSC) containing (2-photon sensitive) photoacid generators (PAG) is used which is deposited on different kinds of surfaces by spin coating. The use of mask aligners and UV-light or 2-photon absorption lithography converts exposed areas to cellulose (silyl groups are cleaved off by the generated acid) while in the unexposed areas TMSC remains. After the patterning step, TMSC can be selectively dissolved using an appropriate solvent or, alternatively, the converted cellulose can be digested using cellulases. Using the latter route remaining TMSC can be converted to cellulose in an additional step. As a result, 2 and 3 dimensionally nanostructured films can be obtained which have a large potential as material for semiconductor industry, in medicine (for growth of stem cells, antifouling materials) and in optical materials (refractive index changes). While the main focus of the project is to generate nano-structured cellulose films, this approach can be easily extended to other polysaccharides as well. The whole project aims at reducing organic solvents and to use mainly so-called eco-solvents.'