Surface-enhanced resonance Raman scattering of porphyrins on gold nanoparticles attached to silanized glass plates

• Published in: Biopolymers Vol. 82; no. 4; pp. 390 - 393
• Main Authors: Prochazka, Marek, Hajdukova, Natalia, Stepanek, Josef
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 01.07.2006
• Subjects: Colloids - chemistry; Glass - chemistry; gold; Gold - chemistry; Molecular Structure; Nanostructures - chemistry; Nanotechnology - methods; porphyrins; Porphyrins - chemistry; SERRS; Spectrum Analysis, Raman - methods; Surface Properties; Vibration
• ISSN: 0006-3525; 1097-0282
• DOI: 10.1002/bip.20467

Surface‐enhanced resonance Raman scattering (SERRS) spectra of cationic 5,10,15,20‐tetrakis(1‐methyl‐4‐pyridyl) porphyrin (TMPyP) and anionic 5,10,15,20‐tetrakis(4‐sulfonatophenyl) porphyrin (TSPP) were measured from gold surfaces prepared by attaching citrate‐reduced colloidal nanoparticles to glass slides silanized by 3‐aminopropyltrimethoxysilane. SERRS spectra of both porphyrins obtained in a large concentration range (1 × 10−4 to 1 × 10−7M) of primary solution do not show any sign of porphyrin metalation or perturbation of its native structure. Optimal adsorption time (15–20 min) and covering concentration limit (lower than 1 × 10−5M) of porphyrins have been estimated from the concentration and soaking time dependences of SERRS spectra. © 2006 Wiley Periodicals, Inc. Biopolymers 82: 390–393, 2006 This article was originally published online as an accepted preprint. The “Published Online” date corresponds to the preprint version. You can request a copy of the preprint by emailing the Biopolymers editorial office at biopolymers@wiley.com