Micellar and bicontinuous microemulsion structures show different solute-solvent interactions: a case study using ultrafast nonlinear infrared spectroscopy

doi:10.1039/c8cp01024b

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	Micellar and bicontinuous microemulsion structures show different solute-solvent interactions: a case study using ultrafast nonlinear infrared spectroscopy
	Zang, Jinger 1,2; Feng, Minjun 1,2; Zhao, Juan 1; Wang, Jianping 1,2
刊名	PHYSICAL CHEMISTRY CHEMICAL PHYSICS
	2018-08-14
卷号	20 期号:30 页码:19938-19949
ISSN号	1463-9076
DOI	10.1039/c8cp01024b
英文摘要	Microemulsions are transparent, thermodynamically stable liquid mixtures of oil, water and surfactant. They typically exist in the form of micellar and bicontinuous structures, which appear to be equilibrium systems but are actually complex in structure and are difficult to characterize at the molecular level. In this work, potassium ferrocyanide [K4Fe(CN)(6)] and tungsten hexacarbonyl [W(CO)(6)] were chosen as two probe molecules for water and organic phases respectively to simultaneously explore the structures and dynamics of commonly prepared reverse micellar and bicontinuous microemulsion structures using aerosol OT (AOT) as the surfactant and isooctane as the oil phase. Even though these two structures have quite different solvent environments due to the varying geometry and boundary conditions, the steady-state infrared spectra of the C?N- stretching mode in the water phase are quite similar, and so are those of the C?O stretching mode in the oil phase. However, vibrational and anisotropic relaxation dynamics obtained from infrared pump-probe spectroscopy and spectral diffusion dynamics extracted from two-dimensional infrared spectroscopy of the two infrared chromophores in the two probe molecules are found to be quite sensitive to whether the probe molecules are in pure solvent or in a restricted microemulsion environment. The results in the water phase and oil phase are discussed separately. Our work demonstrated that ultrafast nonlinear infrared spectroscopy can be used to differentiate the structural details at the molecular level for different microemulsion systems.
语种	英语
出版者	ROYAL SOC CHEMISTRY
WOS记录号	WOS:000441583300021
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/42299]
专题	中国科学院化学研究所
通讯作者	Wang, Jianping
作者单位	1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Mol React Dynam Lab, CAS Res Educ Ctr Excellence Mol Sci,Inst Chem, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zang, Jinger,Feng, Minjun,Zhao, Juan,et al. Micellar and bicontinuous microemulsion structures show different solute-solvent interactions: a case study using ultrafast nonlinear infrared spectroscopy[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS,2018,20(30):19938-19949.
APA	Zang, Jinger,Feng, Minjun,Zhao, Juan,&Wang, Jianping.(2018).Micellar and bicontinuous microemulsion structures show different solute-solvent interactions: a case study using ultrafast nonlinear infrared spectroscopy.PHYSICAL CHEMISTRY CHEMICAL PHYSICS,20(30),19938-19949.
MLA	Zang, Jinger,et al."Micellar and bicontinuous microemulsion structures show different solute-solvent interactions: a case study using ultrafast nonlinear infrared spectroscopy".PHYSICAL CHEMISTRY CHEMICAL PHYSICS 20.30(2018):19938-19949.