Development of Liquid/Liquid Optical Waveguide Using a Two Phase Sheath Flow and Its Application to Fluorescent Determination of Rhodamine B

Abstract

Proposed was the use of a sheath flow as a liq./liq. optical waveguide, in which the inner flow works as core and the outer flow as clad. Firstly, the conditions to obtain a stable liq./liq. optical waveguide were studied: the stable waveguide was constructed with using toluene, di-Et ether and THF as an inner phase, which are miscible or immiscible with H2O. Also, fluorescence spectra of rhodamine B excited by evanescent wave at the liq./liq. interface of the waveguide were obtained and the effect of solvents on the fluorescent spectra is discussed. [on SciFinder(R)]