Acid-base sensitization of fluorescence by energy transfer in an ordered dye-lipid-electrolyte lamella
✍ Scribed by Peter Fromherz
- Publisher
- Elsevier Science
- Year
- 1974
- Tongue
- English
- Weight
- 348 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
A pH sensitive coumarine dye is embedded in an electrically charged solid/electrolyte interfmx. It sxves OS an energy donor for a cyanine dye. The sensitizer, through proton transfer, loses this donor capacity. This trhnsformation affects the excitation of the acceptor.
In the complete lamelIar assembly the agents affecting the sensitizer (UV light, acid-base, electrical charges and eiectrolytc) are coupled to the reaction of the exited acceptor (red fluorescence), which intrinskdly is not sensitive to these agents. The assembly is an esample how sn artiticial multi-molecular ~tructure may act as a new entity with chemical properties not present in the molecular constituents.