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'Fluorescent Probes' in keywords Facet   section ZfN Section C  [X]
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1987 (1)
1976 (1)
1Author    G. W. PohlRequires cookie*
 Title    Spectral Properties of Fluorescent Dyes in Lecithin Vesicles Probes for the Structure of Lipid Bilayer Membranes and for Membrane Potentials  
 Abstract    Three fluorescent dyes (a merocyanin, a cyanin and a modified umbelliferon) have been in­ corporated into vesicles from three different lecithins. Their absorption spectrum, emission spectrum and fluorescence polarization in the lipid vesicles has been studied and compared with the spectral properties in homogeneous organic solutions. The reactivity of lipid bound dyes with reagents in the aqueous phase was investigated. The location use as indicators of phase transitions or membrane 
  Reference    (Z. Naturforsch. 31c, 575 [1976]; received May 10 1976) 
  Published    1976 
  Keywords    Lecithin Vesicles, Fluorescent Probes, Phase Transitions, Membrane Potentials 
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 TEI-XML for    default:Reihe_C/31/ZNC-1976-31c-0575.pdf 
 Identifier    ZNC-1976-31c-0575 
 Volume    31 
2Author    Requires cookie*
 Title    Fluorescence Monitoring of Membrane Potentials: the Spatio-Temporal Resolution in Isolated Neurons of Helix pomatia  
 Abstract    Using amino-styryl-pyridinium dyes as fluorescent probes we have studied the membrane potential in spheroidal neurons isolated from the circumaesophageal ganglia of the snail Helix pomatia. A spatial resolution of 10 ^im is attained at a time resolution of 2.5 ms with a typical signal-to-noise ratio of 10/100 mV as referred to an average sensitivity of the probes of 3%/ 100 mV and to a quantum yield of the detector of 0.13. The linear response of fluorescence, the effect of staining, the variation of sampled area and of illumination are characterized. 
  Reference    Z. Naturforsch. 42c, 986 (1987); received December 29 1986/February 16. 1987 
  Published    1987 
  Keywords    Potential Sensitive Dye, Fluorescent Probes, Styryl D yes, Helix pomatia 
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 TEI-XML for    default:Reihe_C/42/ZNC-1987-42c-0986.pdf 
 Identifier    ZNC-1987-42c-0986 
 Volume    42