期刊
ANALYTICAL CHEMISTRY
卷 93, 期 42, 页码 14231-14237出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.analchem.1c03174
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资金
- AIST (Japan)
The study investigated the diffusion properties of lipophilic vitamin E through bicontinuous microemulsions (BME) using electrochemical and fluorescence correlation spectroscopy (FCS) measurements. Results showed that a higher VE diffusion coefficient and faster diffusion were observed in the oil-rich BME, indicating superior electrochemical measurements can be achieved by controlling the conditions of the BME as the measurement electrolyte.
We studied the diffusion properties of lipophilic vitamin E (VE) through bicontinuous microemulsions (BME) using both electrochemical and fluorescence correlation spectroscopy (FCS) measurements. We investigated the effect of different composition ratios of micro-water and micro-oil phases in BMEs (W/O-BME). When we employed the BME with a lower W/O-BME value of 40/60 (oil-rich BME) as an electrolyte solution, we obtained a larger current response from VE at a fluorinated nanocarbon film electrode. Further voltammetric studies revealed that a higher VE diffusion coefficient was observed in the oil-rich BME. The FCS results also exhibited faster diffusion through the oil-rich BME, which played a significant role in accelerating the VE diffusion probably due to the widening of the micro-oil phase pathway in the BME. Moreover, the effect of increasing the VE diffusion was pronounced at the interface between the electrode surface and the BME solution. These results indicate that controlling the conditions of the BME as the measurement electrolyte is very effective for achieving superior electrochemical measurements in a BME.
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