Superhydrophobic surface formation and modulation in a biphenyltetracarboxylic dianhydride derivative self-assembly system via changing alkyl chain lengths

RSC Advances ◽  
2015 ◽  
Vol 5 (60) ◽  
pp. 48500-48505 ◽  
Author(s):  
Xinhua Cao ◽  
Aiping Gao ◽  
Haiting Lv ◽  
Haichuang Lan ◽  
Qiuli Cheng ◽  
...  
Keyword(s):  
Self Assembly ◽  
Superhydrophobic Surface ◽  
Alkyl Chain ◽  
Assembly System ◽  
Lotus Effect ◽  
Surface Formation ◽  
Low Weight ◽  
Biphenyltetracarboxylic Dianhydride ◽  
Chain Lengths

A Superhydrophobic surface with lotus effect was formed via low weight molecule self-assembly.

scholarly journals Synthesis and Photocontrolled Supramolecular Self-Assembly of Azobenzene-Functionalized Perylene Bisimide Derivatives

Polymers ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1143 ◽  
Author(s):  
Ling ◽  
Cheng ◽  
Miao ◽  
Zhang ◽  
Zhang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Alkyl Chain ◽  
Supramolecular Assembly ◽  
Proton Nuclear Magnetic Resonance ◽  
Ionization Time ◽  
Perylene Bisimide ◽  
Flight Mass Spectrometry ◽  
Chain Lengths ◽  
Tetracarboxylic Dianhydride ◽  
Photoisomerization Process

Azobenzene (Azo) units were successfully introduced into perylene bisimide (PBI) structures in order to realize the photocontrolling of the morphology of the supramolecular assembly of PBI by a photoisomerization process. A total of three Azo-functionalized perylene bisimide derivatives (PBI1, PBI2, and PBI3) with different alkyl chain lengths were designed and synthesized by imidization of 3,4,9,10-perylene tetracarboxylic dianhydride with the corresponding amines. The structures of these compounds were characterized by proton nuclear magnetic resonance (1H NMR) and matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF-MS). The photoisomerization behaviors of Azo units in PBIs were investigated using ultraviolet-visible (UV-VIS) absorption spectroscopy, which were obviously effected by solvents and the alkyl chain length. Furthermore, the photoisomerization of Azo units has the obviously regulatory effect on the morphology of supramolecular assembly of PBIs, especially for the medium-length alkyl chain-linked Azo-functionalized PBI derivative (PBI2). This research realized the photocontrolling of the morphology of the supramolecular assembly of PBI derivatives by photoisomerization of Azo units.

Synthesis and Self-assembly of Amphiphilic Hetero-arm Molecular Brushes

2011 ◽  
Vol 64 (8) ◽  
pp. 1100 ◽  
Author(s):  
Waled Hadasha ◽  
Mpho Mothunya ◽  
Niels Akeroyd ◽  
Bert Klumperman
Keyword(s):  
Self Assembly ◽  
Ring Opening ◽  
Alkyl Chain ◽  
Ring Closure ◽  
Molecular Brushes ◽  
Alkyl Amines ◽  
Ring Opening Reaction ◽  
Grafting From ◽  
Chain Lengths

We report the synthesis of amphiphilic hetero-arm molecular brushes (AMBs), which were prepared by a combination of ‘grafting from’ and ‘grafting onto’ methodologies. First, styrene-terminated polyethylene glycol macromonomer (VB-PEG12, ∼666 g mol–1) was copolymerized with maleic anhydride (MAnh) to yield a polymer containing hydrophilic PEG chains and reactive (MAnh) groups. Subsequently, the reactive MAnh units in the obtained polymer were modified via a ring-opening reaction using primary alkyl amines, with different alkyl chain lengths, as the nucleophile. In situ ring closure yielded the styrene–maleimide-based AMB. The amphiphilic character of the AMBs was used for their self-assembly in different solvents. The effect of the ratio in hydrophilic to hydrophobic graft length on the morphology of the assemblies was studied using scanning electron microscopy.

scholarly journals Facile construction of a family of supramolecular gels with good levofloxacin hydrochloride loading capacity

RSC Advances ◽  
2021 ◽  
Vol 11 (21) ◽  
pp. 12641-12648
Author(s):  
Renyuan Chen ◽  
Caidie Xu ◽  
Yihao Lei ◽  
Hongxin Liu ◽  
Yabin Zhu ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Alkyl Chain ◽  
Low Molecular Weight ◽  
Loading Capacity ◽  
Supramolecular Gels ◽  
Low Molecular Weight Gelators ◽  
Chain Lengths

A family of low molecular weight gelators with different alkyl chain lengths was constructed, having excellent gelation ability and antibiotic loading capacity. A low molecular weight hydrogelator was obtained by adjusting the length of alkyl chain.

Controllable fabrication of lotus-leaf-like superhydrophobic surface on copper foil by self-assembly

2014 ◽  
Vol 116 (4) ◽  
pp. 1613-1620 ◽  
Author(s):  
Zhiqing Yuan ◽  
Xian Wang ◽  
Jiping Bin ◽  
Menglei Wang ◽  
Chaoyi Peng ◽  
...  
Keyword(s):  
Self Assembly ◽  
Superhydrophobic Surface ◽  
Copper Foil ◽  
Lotus Leaf ◽  
Controllable Fabrication

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.

Creation of Polymeric Nanostructures by Living Coordination Block Copolymerization of Allene Derivatives Having Fluoroalkyl Substituents Under Polymerization-induced Self-assembly Conditions and Their Application to Superhydrophobic Surface

2021 ◽  
Author(s):  
Yidan Cheng ◽  
Takeshi Wakiya ◽  
Shinsuke Inagi ◽  
Toshikazu Takata ◽  
Ikuyoshi Tomita
Keyword(s):  
Block Copolymers ◽  
Self Assembly ◽  
Superhydrophobic Surface ◽  
Block Copolymerization ◽  
Spontaneous Formation ◽  
Superhydrophobic Coatings

The spontaneous formation of polymeric nanostructures possessing outer fluorous segments by the living coordination block copolymerization and their application to the transparent superhydrophobic coatings are described. The block copolymers (BCPs)...

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.

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