Interplay between H-Bonding and Alkyl-Chain Ordering in Self-Assembly of Monodendritic L-Alanine Derivatives

ChemPhysChem ◽  
2012 ◽  
Vol 13 (6) ◽  
pp. 1470-1478 ◽  
Author(s):  
Denis V. Anokhin ◽  
Jānis Lejnieks ◽  
Ahmed Mourran ◽  
Xiaomin Zhu ◽  
Helmut Keul ◽  
...  
Keyword(s):  
Self Assembly ◽  
Alkyl Chain ◽  
Chain Ordering

Aggregation Behaviours of Surface-Active Ionic Liquids 1-Alkyl-3-methylimidazolium Bis(2-ethylhexyl)sulfosuccinate

2016 ◽  
Vol 69 (11) ◽  
pp. 1254 ◽  
Author(s):  
Jiequn Wu ◽  
Tianxiang Yin ◽  
Shaoxiong Shi ◽  
Weiguo Shen
Keyword(s):  
Ionic Liquids ◽  
Self Assembly ◽  
Alkyl Chain ◽  
Systematic Investigation ◽  
Bulk Solution ◽  
Free Energies ◽  
Imidazolium Cation ◽  
Structure Transition ◽  
Surface Active ◽  
Counter Ion Binding

The systematic investigation of the aggregation behaviours of newly synthesised surface-active ionic liquids 1-alkyl-3-methylimidazolium bis(2-ethylhexyl)sulfosuccinate ([Cnmim][AOT], n = 2, 3, 5, 6, 7) by various techniques is reported. The critical aggregation concentrations (CACs) and the standard Gibbs free energies of aggregation () were determined from measurements on conductivity, fluorescence, and surface tension, which suggested a stronger self-assembly ability in the bulk solution for [Cnmim][AOT] surfactants with longer alkyl chain cations. An interesting structure transition driven by the penetration of the imidazolium cation into the aggregate when n > 4 was found by analysis of the variations of the values of CAC, , the degree of counter ion binding (β), and the micropolarity (I1/I3) immediately after the CAC with changing alkyl chain length of the imidazolium cation, which was further confirmed by 1H NMR measurements.

scholarly journals Hydroxylated phosphines as ligands for chalcogenide clusters: self assembly, transformations and stabilization

2017 ◽  
Vol 89 (3) ◽  
pp. 379-392 ◽  
Author(s):  
Maxim N. Sokolov ◽  
Alexander V. Anyushin ◽  
Rita Hernandez-Molina ◽  
Rosa Llusar ◽  
Manuel G. Basallote
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Transition Metal Complexes ◽  
Self Assembly ◽  
Structure Elucidation ◽  
Alkyl Chain ◽  
Chalcogenide Clusters ◽  
Recent Advances

AbstractThis contribution is a documentation of recent advances in the chemistry of chalcogenide polynuclear transition metal complexes coordinated with mono- and di-phosphines functionalized with hydroxo groups. A survey of complexes containing tris(hydroxymethyl)phosphine (THP) is presented. The influence of the alkyl chain in bidentate phosphines, bearing the P–(CH2)x–OH arms, is also analyzed. Finally, isolation and structure elucidation of the complexes with HP(OH)2, P(OH)3, As(OH)3, PhP(OH)2, stabilized by coordination to Ni(0) and Pd(0) centers embedded into chalcogenide clusters, is discussed.

scholarly journals Self-assembly of fluorescent diimidazolium salts: tailor properties of the aggregates changing alkyl chain features

RSC Advances ◽  
2016 ◽  
Vol 6 (64) ◽  
pp. 59502-59512 ◽  
Author(s):  
Floriana Billeci ◽  
Francesca D'Anna ◽  
Salvatore Marullo ◽  
Renato Noto
Keyword(s):  
Chain Length ◽  
Self Assembly ◽  
Alkyl Chain ◽  
Alkyl Chain Length

Self assembly of fluorescent diimidazolium NDI salts showed properties of aggregates changing with alkyl chain length, with an odd–even effect.

scholarly journals Layered‐Herringbone Polymorphs and Alkyl‐Chain Ordering in Molecular Bilayer Organic Semiconductors

2019 ◽  
Vol 30 (4) ◽  
pp. 1906406 ◽  
Author(s):  
Shunto Arai ◽  
Kaede Morita ◽  
Jun'ya Tsutsumi ◽  
Satoru Inoue ◽  
Mutsuo Tanaka ◽  
...  
Keyword(s):  
Organic Semiconductors ◽  
Alkyl Chain ◽  
Chain Ordering

scholarly journals Azobenzene moiety variation directing self-assembly and photoresponsive behavior of azo-surfactants

2014 ◽  
Vol 2 (39) ◽  
pp. 8303-8312 ◽  
Author(s):  
Shuhua Peng ◽  
Qipeng Guo ◽  
Patrick G. Hartley ◽  
Timothy C. Hughes
Keyword(s):  
Self Assembly ◽  
Alkyl Chain ◽  
Molecular Architecture ◽  
Azobenzene Moiety

We report two photoresponsive amphiphiles with comparable structures consisting of hydrophilic oligooxyethylene units, a hydrophobic alkyl chain and a light-sensitive azobenzene moiety, demonstrating that self-assembly and photoresponsive behaviour is extremely sensitive to the position of the photoactive moiety within the surfactant molecular architecture.

Synthesis and properties of multiheaded and multitailed surfactants based on tripentaerythritol

2015 ◽  
Vol 93 (5) ◽  
pp. 502-508 ◽  
Author(s):  
Nawal K. Paul ◽  
Tyler Mercer ◽  
Hussein Al-Mughaid ◽  
D. Gerrard Marangoni ◽  
Michael J. McAlduff ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Aqueous Solution ◽  
Surface Tension ◽  
Light Scattering ◽  
Dynamic Light Scattering ◽  
Self Assembly ◽  
Alkyl Chain ◽  
Alkyl Chain Length ◽  
Aggregation Behaviour ◽  
Aggregate Structures

The surface and self-assembly properties of a family of multiheaded, multitailed surfactants based on a tripentaerythritol backbone are described. Critical aggregation concentrations of these unusual surfactant systems have been determined from surface tension measurements; aggregate sizes in the presence and absence of a small amount of added electrolyte have been obtained via dynamic light scattering, and the morphologies of the aggregates were examined from electron microscopy measurements. In general, when compared to conventional ionic and two-headed surfactants (and other recently synthesized pentaerythritol derived surfactants from this group), these multiheaded surfactants exhibited some unusual trends in their aggregation behaviour and interesting aggregate structures in aqueous solution, as a function of alkyl chain length.

STM investigation of structural isomers: alkyl chain position induced self-assembly at the liquid/solid interface

2016 ◽  
Vol 18 (1) ◽  
pp. 624-634 ◽  
Author(s):  
Yi Hu ◽  
Kai Miao ◽  
Bao Zha ◽  
Li Xu ◽  
Xinrui Miao ◽  
...  
Keyword(s):  
Self Assembly ◽  
Alkyl Chain ◽  
Structural Isomers ◽  
Solid Interface ◽  
Research Studies

The results are of significance to the alkyl chain position induced assembly configurations and the surface research studies of structural isomers.

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