Surface-enhanced resonance Raman scattering of porphyrins on gold nanoparticles attached to silanized glass plates
✍ Scribed by Marek Procházka; Natália Hajduková; Josef S̆těpánek
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 2006
- Tongue
- English
- Weight
- 171 KB
- Volume
- 82
- Category
- Article
- ISSN
- 0006-3525
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✦ Synopsis
Abstract
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^−7^M) 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^−5^M) of porphyrins have been estimated from the concentration and soaking time dependences of SERRS spectra. © 2006 Wiley Periodicals, Inc. Biopolymers 82: 390–393, 2006
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