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arXiv 1609.09284cond-mat.soft
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罗丹明B作为溶液相变探针的研究

Rhodamine B as a probe for phase transition in liquid solutions

Ivan Shishkin, Tmiron Alon, Ronen Dagan, Pavel Ginzburg

摘要:

荧光染料的局部环境可以强烈地影响后者的发射动力学。特别是,信号强度和发射寿命都对溶剂温度高度敏感。本文对罗丹明B在水和乙醇溶液中荧光的温度依赖行为进行了实验研究。液态水到冰的相变点显示出对染料发光的强度(30倍下降)和寿命(从2.68 ns下降到0.13 ns)以及光谱最大值从590 nm到625 nm的光谱移位具有显著影响。同时,乙醇溶剂不会导致任何类似的行为。报道的结果和方法,使进一步调查的染料-溶剂的相互作用和研究的物理性质的液体在相变点。

英文摘要:

Local environment of fluorescent dyes could strongly affect emission dynamics of the latter. In particular, both signal intensities and emission lifetimes are highly sensitive to solvent temperatures. Here, temperature-dependent behavior Rhodamine B fluorescence in water and ethanol solutions was experimentally investigated. Phase transition point of liquid water to ice was shown to have a dramatic impact on both in intensity (30-fold drop) and in lifetime (from 2.68ns down to 0.13ns) of the dye luminescence along with the spectral shift of spectral maxima from 590 to 625nm. At the same time, ethanol solvent does not lead any similar behavior. The reported results and approaches enable further investigations of dye-solvent interactions and studies of physical properties of liquids at phase transition points.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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