Journal of Nanoscience and Nanoengineering
Articles Information
Journal of Nanoscience and Nanoengineering, Vol.2, No.2, Apr. 2016, Pub. Date: Feb. 29, 2016
On the New Phenomenon of Fluorescence Self-Quenching in Organic Monolayers at the Air-Liquid Interface and on Solid Supports
Pages: 15-19 Views: 804 Downloads: 556
Authors
[01] George R. Ivanov, Laboratory of Nanoscience and Nanotechnology, Department of Physics, University of Architecture, Civil Engineering and Geodesy and Advanced Technologies Ltd., Sofia, Bulgaria.
Abstract
The novel phenomenon of fluorescence self-quenching was earlier discovered by us. It was observed in monolayers from fluorescently head labeled phospholipids, mainly Nitrobenzoxadiazole Dipalmitoyl Phosphatidyl Ethanolamine (DP-NBD-PE), at the air-liquid interface. Here we report that the morphology and film structure is preserved during Langmuir-Blodgett (LB) film transfer on the solid support as observed with fluorescence microscopy. The self-quenching phenomenon in the solid phase is interpreted as radiationless energy transfer when NBD chromophores are below the critical distance Rc of 0,94 nm in the solid phase. Possible applications for high sensitivity and selectivity biosensors are discussed.
Keywords
Fluorescence Self-Quenching, Langmuir Films, Langmuir-Blodgett Films, Phospholipids, Biosensors, Fluorescence Microscopy
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