Experimental and DFT studies on aggregation behavior of dodecylsulfonate-based surface active ionic liquids in water and ethylammonium nitrate

doi:10.1016/j.molliq.2016.02.074

	Experimental and DFT studies on aggregation behavior of dodecylsulfonate-based surface active ionic liquids in water and ethylammonium nitrate
	Tian, Tongtong 1,2; Qin, Jieqiong 3; Gao, Yan'an 4; Yu, Li 1,2
刊名	JOURNAL OF MOLECULAR LIQUIDS
	2016-06-01
卷号	218 页码:457-464
关键词	Surface Active Ionic Liquid Lyotropic Liquid Crystals Lamellar Gels
ISSN号	0167-7322
DOI	10.1016/j.molliq.2016.02.074
文献子类	Article
英文摘要	The present work aims to systematically study the aggregation behavior of one halogen-free surface active ionic liquid (SAIL), i.e., 1-butyl-3-methylimidazolum dodecylsulfonate ([C(4)mim][C12H25SO3]), in water and ethylammonium nitrate (EAN), respectively. Multiple-state ordered aggregates, viz. lyotropic liquid crystals (LLCs) (normal hexagonal and laminar lyotropic liquid phases, i.e. H-1 and L-alpha phases) and lamellar gels, were facilely tuned only by the concentration of SAIL or solvent type. Furthermore, it is particularly interesting that LLC phases were constructed in H2O while lamellar gels were obtained in the EAN media environment, which were characterized by polarized optical microscopy (POM) and small-angle X-ray scattering (SAXS). According to the investigative SAXS patterns, some structural parameters were calculated, suggesting that a higher concentration of SAIL results in a denser arrangement whereas an opposite trend generates because of a higher temperature. FT-IR spectra and density functional theory (DFT) calculations reveal that both strong H-bonding and electrostatic interactions between EAN and the headgroups of [C(4)mim][C12H25SO3] facilitate gelation. For the self-assembled lamellar gels formed by [C(4)mim][C12H25SO3] in EAN, a thermally reversible sol-gel transition was observed by differential scanning calorimetry (DSC). The rheological results show that the H1 phase formed by [C(4)mim][C12H25SO3] in water exhibits a viscoelastic gel-like behavior among the whole frequency region while L-alpha phase displays a viscous behavior at lower frequencies and an elastic behavior at higher frequencies. This work is expected to set a basis for application of the eco-friendly halogen-free SAIL in some fields, e.g. electrochemistry, supramolecular chemistry and drug delivery. (c) 2016 Elsevier B.V. All rights reserved.
WOS关键词	CRYSTALLINE PHASES ; GELS ; SYSTEM ; SOLVENTS ; GELATORS ; MIXTURES ; THERMODYNAMICS ; ELECTROLYTES ; CHLORIDES ; IONOGELS
WOS研究方向	Chemistry ; Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000376800500050
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/170590]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Yu, Li
作者单位	1.Qufu Normal Univ, Sch Chem & Chem Engn, Qufu 273165, Peoples R China 2.Shandong Univ, Minist Educ, Key Lab Colloid & Interface Chem, Jinan 250100, Peoples R China 3.China Res Inst Daily Chem Ind, Taiyuan 030001, Peoples R China 4.Chinese Acad Sci, Dalian Inst Chem Phys, China Ion Liquid Lab, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Tian, Tongtong,Qin, Jieqiong,Gao, Yan'an,et al. Experimental and DFT studies on aggregation behavior of dodecylsulfonate-based surface active ionic liquids in water and ethylammonium nitrate[J]. JOURNAL OF MOLECULAR LIQUIDS,2016,218:457-464.
APA	Tian, Tongtong,Qin, Jieqiong,Gao, Yan'an,&Yu, Li.(2016).Experimental and DFT studies on aggregation behavior of dodecylsulfonate-based surface active ionic liquids in water and ethylammonium nitrate.JOURNAL OF MOLECULAR LIQUIDS,218,457-464.
MLA	Tian, Tongtong,et al."Experimental and DFT studies on aggregation behavior of dodecylsulfonate-based surface active ionic liquids in water and ethylammonium nitrate".JOURNAL OF MOLECULAR LIQUIDS 218(2016):457-464.