Combined use of two membrane-potential-sensitive dyes for determination of the Galvani potential difference across a biomimetic oil/water interface
Combined use of two membrane-potential-sensitive dyes for determination of the Galvani potential difference across a biomimetic oil/water interface
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结合使用两种膜电位敏感染料来测定仿生油/水界面上的伽伐尼电位差
DOI:
10.1007/s00216-014-7776-x
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发表时间:
2014
期刊:
影响因子:
--
通讯作者:
Toshiyuki Osakai
中科院分区:
文献类型:
--
作者:
Tatsuya Yoshimura;Hirohisa Nagatani;Toshiyuki Osakai
The fluorescence behavior of anionic membrane-potential-sensitive dyes,bis-(1,3-dibutylbarbituric acid) trimethine oxonol (DiBAC4(3)) andbis-(1,3-diethylthiobarbituric acid)trimethine oxonol (DiSBAC2(3)), at a biomimetic 1,2-dichloroethane (DCE)/water (W) interface was studied by the mean of potential-modulated fluorescence (PMF) spectroscopy. The respective dyes gave a well-defined PMF signal due to the adsorption/desorption at the DCE/W interface. It was also found that the potentials where the two dyes gave the PMF signals were different by about 100 mV. We then attempted a combined use of the two dyes for determination of the Galvani potential difference across the DCE/W interface. When 40 μM DiBAC4(3) and 15 μM DiSBAC2(3) were initially added to the W phase, distinctly different spectra were obtained for different interfacial potentials. The ratio of the PMF signal intensities at 530 and 575 nm (the fluorescence maximum wavelengths for the respective dyes) showed a clear dependence on the interfacial potential. These results suggested the potential utility of the combined use of two dyes for the determination of membrane potentials in vivo.FigureCombined use of two membrane-potential-sensitive dyes that show different colors of fluorescence emission at their specific adsorption potentials.
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影响因子:
2.4
作者:
WAGGONER, A
通讯作者:
WAGGONER, A
DOI:
--
发表时间:
2000
期刊:
影响因子:
--
作者:
H. Nagatani;R. Iglesias;D. Fermín;P. Brevet;H. Girault
通讯作者:
H. Girault
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
Takeshi;Morimoto;Susumu;Ohya;Katsuhiko;Muraki;Yuji;Imaizumi
通讯作者:
Imaizumi
影响因子:
4.2
作者:
RENIER, M;TAMANINI, A;CABRINI, G
通讯作者:
CABRINI, G
DOI:
--
发表时间:
2006
期刊:
影响因子:
--
作者:
J. Rajendra;Angeliki Damianoglou;M. Hicks;P. Booth;P. Mark Rodger;A. Rodger
通讯作者:
A. Rodger