| Autor: |
Saulius Jursenas, N. Kirichenko, Inta Muzikante, E. Fonavs, O. Neilands, L. Gerca, Renata Karpicz, Leonas Valkunas, R. Valiokas |
| Rok vydání: |
2004 |
| Předmět: |
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| Zdroj: |
UV Solid-State Light Emitters and Detectors ISBN: 9781402020353 |
| Popis: |
Dipolar donor—acceptor molecules show pronounced changes in the dipole moment upon photoexcitation, resulting in transformation of their optical and electrical properties. A monolayer of 4′-(3H-1,2,5-dithiazepan-5yl)benzylidene indan-1,3-dione (DMABI-2S), possessing high electric dipole moment is self-assembled (SAM) on Au layer. Analysis of the IR vibrational and fluorescence spectra of SAMs supports the conclusion about the specific tight packing of the molecules in the SAM structure. The changes of the surface potential on irradiation with blue-light is measured by Kelvin probe technique. The reversible changes of surface potential of the order several tenths of millivolts is induced by irradiation of the sample. The relationship between absorption spectra and spectral dependence of the surface potential is observed. Such SAM structures can be applied for design of molecular sensors and 2D recognition devices. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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