Abstract
The preparation of 2,7-diazapyrenium films on glass, quartz and silica was described. The transmission absorption spectra confirmed the presence of 2,7-diazapyrenium chromophores, but indicate sub-monolayer surface coverages. The amount of immobilized 2,7-diazapyrenium dications increases significantly when the polysiloxane formation steps of both procedures are performed either on the surface of silica nanoparticles or in the presence of Si(OEt) 4 on glass slides. The emission intensity of the 2,7-diazapyrenium dications decreases upon association of the surface-confined fluorophores with dopamine.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 5795-5802 |
| Number of pages | 8 |
| Journal | Langmuir |
| Volume | 21 |
| Issue number | 13 |
| DOIs | |
| State | Published - Jun 21 2005 |
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
- Surfaces and Interfaces
- Spectroscopy
- Electrochemistry
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Cite this
Cejas, M. A., & Raymo, F. M. (2005). Fluorescent diazapyrenium films and their response to dopamine. Langmuir, 21(13), 5795-5802. https://doi.org/10.1021/la0502793