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白玉浴血木蟲 (正式寫手)
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[求助]
請問這里的百分?jǐn)?shù)都表示的是什么呢？
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For comprehending the solvation dynamics process, a thorough understanding of the micellar structure and location of the probe within the micelle is necessary. The dielectric constant is an important tool for measuring the polarity of a solvent, which changes from bulk solvent to micellar solution with the probe in the palisade layer.72 According to the molecular approach for the solvation relaxation process, which takes into account the solvent structures around the probe, it appears to be more logical to understand the results in micellar media, although it is more complicated than the homogeneous solution. Inside the micellar palisade layer, the movement of the water molecules is much more hindered than the bulk water molecules, hence it is expected that the solvation process inside the micelle should be slower than that in the bulk. The water molecules adjacent to the probe are much more restricted and difficult to rearrange than the water molecules somewhat away from the probe. So the slower solvation component arises from the response of the few restricted water molecules that are adjacent to the probe, and the collective response of the relatively large number of water molecules that are not in the vicinity of the probe gives rise to the faster solvation component.75 From UV−visible spectra, fluorescence spectra, and also anisotropy values, one can conclude that the probe molecules reside inside the palisade layer of the micelles. The average solvation time of C- 343 at 298 K in aqueous solution of 28 mM SB-16 was found to be 2.02 ns (Table 3), with components 0.64 ns (80%) and 7.57 ns (20%). The process becomes faster in the presence of both the surfactant (SDS) and the RTIL (EmimOs), and the effect is more pronounced in the case of SDS. With the addition of 10 mM EmimOs and SDS to 28 mM SB-16 solution, the average solvation time changes from 2.02 to 1.36 and 1.00 ns, respectively. The slow component of the solvation time of C- 343 at 298 K in 28 mM SB-16 solution was found to be 7.57 ns with amplitude of 20%. With addition of 10 mM EmimOs, this value decreases from 7.57 to 3.23 ns and the amplitude changes from 20% to 33%, which clearly indicates that the strength of the hydrogen bonding decreases but the water penetration increases. On addition of 10 mM SDS to the 28 mM SB-16 solution, the slow component decreases from 7.57 to 1.19 ns and the amplitude increases from 20% to 76% which suggests that the strength of hydrogen bonding decreases while the water penetration increases abnormally. This is a manifestation of the movement of the probe molecules to the bulk water phase. |
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白玉浴血
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5樓2015-08-31 08:11:19
baoshanqiu
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白玉浴血: 金幣+5, 翻譯EPI+1, ★有幫助 2015-08-29 08:32:35
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The average solvation time of C-343 at 298 K in aqueous solution of 28 mM SB-16 was found to be 2.02 ns (Table 3), with components 0.64 ns (80%) and 7.57ns (20%). 這里可能是不同組分的溶劑化時間分布，有80%為0.64 ns，20%為7.57ns，平均0.64x80%+7.57x20%=2.02ns. 這些百分比看來是該類組分的豐度（含量百分比）。 The slow component of the solvation time of C-343 at 298 K in 28 mM SB-16 solution was found to be 7.57 ns with amplitude of 20% 慢組分的溶劑化時間 7.57 ns豐度20% With addition of 10 mM EmimOs, this value decreases from 7.57 to 3.23 ns and the amplitude changes from 20% to 33%, 加EmimOs后該值（溶劑化時間）變?yōu)?.23 ns，豐度由20% 變?yōu)?33%。 余同。 |
2樓2015-08-28 21:50:55
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3樓2015-08-29 08:33:28
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4樓2015-08-30 08:33:57
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