Anellated hemicyanine dyes with large symmetrical solvatochromism of absorption and fluorescence

Article Abstract:

A novel class of amphiphilic hemicyanine dyes is described where electron-pushing aniline and electron-pulling pyridinium are joined by anellated benzene rings. From the intramolecular charge shift that is induced by electronic excitation, the linear Stark effect that is expected when the Annine dyes are used as voltage-sensitive probes in a biomembrane is estimated.

Cyclic crudes and intermediates, Cyclic Crude and Intermediate Manufacturing, Aniline, Excited state chemistry, Pyridinium compounds

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Anellated hemicyanine dyes in a neuron membrane: molecular Stark effect and optical voltage recording

Article Abstract:

The voltage sensitivity of hemicyanine dyes ANNINE-6 and ANNINE-5 with anellated benzene rings and without free CC single and double bonds is studied in Retzius neurons from Hirudo medicinalis. The Annine dyes are the most efficient fluorescent probes of neuronal activity on the basis of a well-defined physical mechanism.

Science & research, Petrochemical Manufacturing, Benzene, Research, Neurons, Leeches

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Orientation of hemicyanine dye in lipid membrane measured by fluorescence interferometry on a silicon chip

Article Abstract:

Measurement of molecular orientation of the hemicyanine dye Di8ANEPPS in a lecithin membrane is reported. Fluorescence is affected by reflection of the exciting light and of the emitted light at the interface silicon/oxide and other interfaces.

Semiconductors and related devices, Semiconductor and Related Device Manufacturing, Silicon Chips, Lipid membranes, Interferometry

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