Cooperative Dynamics and Hydration of Aqueous D-Mannitol and myo-Inositol.

IF 2.8 2区 化学 Q3 CHEMISTRY, PHYSICAL
The Journal of Physical Chemistry B Pub Date : 2025-01-16 Epub Date: 2025-01-03 DOI:10.1021/acs.jpcb.4c07344
Iwona Płowaś-Korus, Paweł Korus, Richard Buchner
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引用次数: 0

Abstract

The cooperative dynamics and hydration of D-mannitol and myo-inositol in aqueous solution at 25 °C were investigated by broad-band dielectric relaxation spectroscopy (DRS) for solute concentrations c < 0.9M. The recorded spectra, covering the frequency range 0.05 ≤ ν/GHz ≤ 50, can be described as a superposition of three Debye-type relaxation processes. The determined total effective hydration numbers, Zt, as well as the effective dipole moments, μeff, of D-mannitol and myo-inositol do not depend on solute concentration. The Zt values obtained for both sugar alcohols are significantly smaller than that of the previously studied xylitol. In contrast to aqueous xylitol, the dielectric spectra also showed no indication of the formation of D-mannitol or myo-inositol aggregates.

d -甘露醇和肌醇水溶液的协同动力学和水合作用。
采用宽带介质弛豫光谱(DRS)研究了溶质浓度C < 0.9M时d-甘露醇和肌醇在25℃水溶液中的协同动力学和水化反应。记录的光谱覆盖了0.05≤ν/GHz≤50的频率范围,可以描述为三个debye型弛豫过程的叠加。d -甘露醇和肌醇的总有效水化数Zt和有效偶极矩μeff与溶质浓度无关。得到的两种糖醇的Zt值都明显小于先前研究的木糖醇。与木糖醇水溶液相比,介质光谱也没有显示d -甘露醇或肌醇聚集体形成的迹象。
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来源期刊
CiteScore
5.80
自引率
9.10%
发文量
965
审稿时长
1.6 months
期刊介绍: An essential criterion for acceptance of research articles in the journal is that they provide new physical insight. Please refer to the New Physical Insights virtual issue on what constitutes new physical insight. Manuscripts that are essentially reporting data or applications of data are, in general, not suitable for publication in JPC B.
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