SERS active systems of water-soluble polythiophene and plasmonic nanoparticles: preparation and optical properties

0363644 - ÚMCH 2012 RIV FR eng J - Journal Article
Kazim, Samrana - Pfleger, Jiří - Halašová, Klára - Procházka, M. - Bondarev, D. - Vohlídal, J.
SERS active systems of water-soluble polythiophene and plasmonic nanoparticles: preparation and optical properties.
European Physical Journal-Applied Physics. Roč. 55, č. 2 (2011), 23905_1-23905_6. ISSN 1286-0042. E-ISSN 1286-0050.
[International Symposium on Flexible Organic Electronics /3./. Ouranoupolis, 06.07.2010-09.07.2010]
R&D Projects: GA AV ČR KAN100500652; GA MŠMT 7E10040; GA ČR GAP208/10/0941
Institutional research plan: CEZ:AV0Z40500505
Keywords : nanocomposite * SERS * .pi.-conjugated polymers
Subject RIV: CF - Physical ; Theoretical Chemistry
Impact factor: 0.771, year: 2011

Aggregated systems of silver (Ag) and gold (Au) nanoparticles coated with cationic polythiophene were prepared, which showed optical properties typical for strongly coupled plasmonic excitations. The procedure allowed tune up the three-dimensional arrangement of nanoparticles assembly for achieving strong SERS effect at the excitation wavelength depending on the polymer concentration. By combination with an anionic derivative of polythiophene thin multilayer films composed of alternating anionic and cationic polythiophene with mutually interacting plasmonic Au nanoparticles were successfully prepared using layer-by-layer deposition.
Permanent Link: http://hdl.handle.net/11104/0199382