Estimation of dielectric function of biotin-capped gold nanoparticles via signal enhancement on surface plasmon resonance
Article Abstract:
Biotin-capped gold nanoparticles assembled on flat gold with volume fraction f are analyzed by surface plasmon resonance (SPR) spectroscopy and atomic force microscopy (AFM) in order to estimate the dielectric function of the gold nanoparticles based on the Maxwell-Garnett (MG) theory. The SPR response of a surface covered with particles in 2-dimensional aggregates is analyzed and the experimental SPR curve of the particle aggregates has deviated from the theoretical predictions, indicating dipole interactions between particles.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
User Contributions:
Comment about this article or add new information about this topic:
Dynamic and collective electrochemical responses of tetrathiafulvalene derivative self-assembled monolayers
Article Abstract:
Electroactive tetrathaifulvalene (TTF)-containing alkanethiol self-assembled monolayers (SAMs) are designed and synthesized to elucidate the relationship between electrochemical responses and film structures. Results reveal that TTF-based SAMs exhibited collective electrochemical responses induced by dynamic structural changes, depending on the degree of freedom for the component molecules in the SAMs.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2006
User Contributions:
Comment about this article or add new information about this topic:
Cationic self-assembled monolayers composed of gemini-structured dithiol on gold: A new concept for molecular recognition because of the distance between adsorption sites
Article Abstract:
Cationic self-assembled monolayers (SAMs) composed of quaternary ammonium (QA) sulfur derivatives are synthesized to control the distance between charged headgroups on gold substrates. The methods used for this purpose are the surface plasmon resonance spectroscopy (SPR), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared-reflection adsorption spectroscopy (FTIR-RAS).
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2003
User Contributions:
Comment about this article or add new information about this topic:
- Abstracts: Formation and dissolution of gold nanocrystal superlattices in a colloidal solution. pH dependence of the electronic structure of glycine
- Abstracts: Ultrafast stepwise electron injection from photoexcited Ru-complex into nanocrystalline ZnO film via intermediates at the surface
- Abstracts: Optimization of single-walled carbon nanotube arrays for methane torage at room temperature. Dispersion of single-walled carbon nanotubes in aqueous solutions of the anionic surfactant NaDDBS
- Abstracts: Luminescence polarization spectroscopy study of functionalized carbon nanotubes in a polymeric matrix. Absortivity of functionalized single-walled carbon nanotubes in solution
- Abstracts: CO adsorption on Pd nanoparticles: density functional and vibrational spectroscopy studies. High-pressure studies of CO adsorption on Pd(111) by X-ray photoelectron spectroscopy and sum-frequency generation