Anellated Hemicyanine Dyes with Large Symmetrical Solvatochromism of Absorption and Fluorescence
摘要:
A novel class of amphiphilic hemicyanine dyes is described where electron-pushing aniline and electron-pulling pyridinium are joined by anellated benzene rings. Enhancing the solvent polarity, the absorption band of these ANNINE dyes is shifted to the blue and the fluorescence band is shifted to the red at an invariant 00 energy. The increasing Stokes shift spans the whole visible spectrum. The divergent symmetrical solvatochromism of the positively charged chromophores is parametrized by a monopole-dipole model using a Born-Onsager-Marcus approach. 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.
Anellated Hemicyanine Dyes with Large Symmetrical Solvatochromism of Absorption and Fluorescence
摘要:
A novel class of amphiphilic hemicyanine dyes is described where electron-pushing aniline and electron-pulling pyridinium are joined by anellated benzene rings. Enhancing the solvent polarity, the absorption band of these ANNINE dyes is shifted to the blue and the fluorescence band is shifted to the red at an invariant 00 energy. The increasing Stokes shift spans the whole visible spectrum. The divergent symmetrical solvatochromism of the positively charged chromophores is parametrized by a monopole-dipole model using a Born-Onsager-Marcus approach. 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.
OPTIMIZED DETERMINATION OF VOLTAGE CHANGES USING A VOLTAGE-SENSITIVE DYE
申请人:Max-Planck-Gesellschaft zur Förderung
der Wissenschaften e.V.
公开号:EP1644722A1
公开(公告)日:2006-04-12
Optimized Determination of Voltage Changes Using a Voltage-Sensitive Dye
申请人:Kuhn Bernd
公开号:US20080122428A1
公开(公告)日:2008-05-29
The present invention relates to a method of determining voltage changes, e.g. in cell membranes, by means of a voltage-sensitive dye.
[EN] OPTIMIZED DETERMINATION OF VOLTAGE CHANGES USING A VOLTAGE-SENSITIVE DYE<br/>[FR] DETERMINATION OPTIMISEE DE CHANGEMENT DE TENSIONS UTILISANT UN COLORANT SENSIBLE A LA TENSION
申请人:MAX PLANCK GESELLSCHAFT
公开号:WO2005001448A1
公开(公告)日:2005-01-06
The present invention relates to a method of determining voltage changes, e.g. in cell membranes, by means of a voltage-sensitive dye.
Anellated Hemicyanine Dyes with Large Symmetrical Solvatochromism of Absorption and Fluorescence
作者:Gerd Hübener、Armin Lambacher、Peter Fromherz
DOI:10.1021/jp0345809
日期:2003.8.1
A novel class of amphiphilic hemicyanine dyes is described where electron-pushing aniline and electron-pulling pyridinium are joined by anellated benzene rings. Enhancing the solvent polarity, the absorption band of these ANNINE dyes is shifted to the blue and the fluorescence band is shifted to the red at an invariant 00 energy. The increasing Stokes shift spans the whole visible spectrum. The divergent symmetrical solvatochromism of the positively charged chromophores is parametrized by a monopole-dipole model using a Born-Onsager-Marcus approach. 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.