Abstract
The effect (Stark effect) of an applied electric field on the electronic states of molecular adsorbates was studied by measuring surface plasmon resonance (SPR) as a function of the wavelenght of the incident light that excites the SPR. Using the Kramers-Kronig relation, Stark spectra comparable to those obtained with conventional methods were extracted from the electric field-induced SPR angular shift for several organic adsorbates. Because this method relies on detecting the SPR angular shift that can be measured precisely, high-sensitivity Stark spectroscopy can be achieved. In addition, the adsorbate coverage information can be determined from the SPR angular shift upon molecular adsorption.
Original language | English (US) |
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Pages (from-to) | 4003-4008 |
Number of pages | 6 |
Journal | Analytical chemistry |
Volume | 72 |
Issue number | 17 |
DOIs | |
State | Published - Sep 1 2000 |
Externally published | Yes |
ASJC Scopus subject areas
- Analytical Chemistry