Self-Assembly at the Air−Water Interface. In-Situ Preparation of Thin Films of Metal Ion Grid Architectures

1998 ◽  
Vol 120 (19) ◽  
pp. 4850-4860 ◽  
Author(s):  
Isabelle Weissbuch ◽  
Paul N. W. Baxter ◽  
Sidney Cohen ◽  
Hagai Cohen ◽  
Kristian Kjaer ◽  
...  
Keyword(s):  
Thin Films ◽  
Self Assembly ◽  
Metal Ion ◽  
Water Interface ◽  
In Situ Preparation ◽  
Air Water Interface

scholarly journals Self-Assembly, Interfacial Nanostructure, and Supramolecular Chirality of the Langmuir-Blodgett Films of Some Schiff Base Derivatives without Alkyl Chain

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
Tifeng Jiao ◽  
Ruirui Xing ◽  
Qingrui Zhang ◽  
Yaopeng Lv ◽  
Jingxin Zhou ◽  
...  
Keyword(s):  
Schiff Base ◽  
Metal Ions ◽  
Self Assembly ◽  
Alkyl Chain ◽  
Water Interface ◽  
Supramolecular Chirality ◽  
Air Water Interface ◽  
Langmuir Blodgett Films ◽  
Base Derivative

A special naphthyl-containing Schiff base derivative,N,N′-bis(2-hydroxy-1-naphthylidene)-1,2-phenylenediamine, was synthesized, and its coordination with various metal ions in situ at the air/water interface has been investigated. Although the ligand contains no alkyl chain, it can be spread on water surface. When metal ions existed in the subphase, an interfacial coordination between the ligand and different metal ions occurred in the spreading film, while different Nanostructures were fabricated in the monolayers. Interestingly to note that among various metal ions, only the in situ coordination-induced Cu(II)-complex film showed supramolecular chirality, although the multilayer films from the ligand or preformed complex are achiral. The chirality of the in situ Cu(II)-coordinated Langmuir film was developed due to the special distorted coordination reaction and the spatial limitation at the air/water interface. A possible organization mechanism at the air/water interface was suggested.

Self-assembly behaviours of a lipid-mimic brush polymer in thin films and at air–water interface

Polymer ◽  
2015 ◽  
Vol 78 ◽  
pp. 161-172 ◽  
Author(s):  
Jonghyun Kim ◽  
Jungwoon Jung ◽  
Minh Dinh Phan ◽  
Brian J. Ree ◽  
Shin'ichi Fujita ◽  
...  
Keyword(s):  
Thin Films ◽  
Self Assembly ◽  
Water Interface ◽  
Brush Polymer ◽  
Air Water Interface

Colloidal monolayer at the air/water interface: Large-area self-assembly and in-situ annealing

2013 ◽  
Vol 544 ◽  
pp. 557-561 ◽  
Author(s):  
Jie Yu ◽  
Lu Zheng ◽  
Chong Geng ◽  
Xiuyu Wang ◽  
Qingfeng Yan ◽  
...  
Keyword(s):  
Self Assembly ◽  
Water Interface ◽  
Large Area ◽  
Colloidal Monolayer ◽  
Air Water Interface

Light‐Triggered, Non‐Centrosymmetric Self‐Assembly of Aqueous Arylazopyrazoles at the Air‐Water Interface and SHG Switching

2020 ◽  
Author(s):  
Nobuo Kimizuka ◽  
Yuki Nagai ◽  
Keita Ishiba ◽  
Ryosuke Yamamoto ◽  
Teppei Yamada ◽  
...  
Keyword(s):  
Self Assembly ◽  
Water Interface ◽  
Air Water Interface

scholarly journals Spin Crossover in Nickel(II) Tetraphenylporphyrinate via Forced Axial Coordination at the Air/Water Interface

Molecules ◽  
2021 ◽  
Vol 26 (14) ◽  
pp. 4155
Author(s):  
Alexander V. Shokurov ◽  
Daria S. Kutsybala ◽  
Andrey P. Kroitor ◽  
Alexander A. Dmitrienko ◽  
Alexander G. Martynov ◽  
...  
Keyword(s):  
Spin State ◽  
Spin Crossover ◽  
High Spin State ◽  
Water Interface ◽  
Metal Centers ◽  
Axial Coordination ◽  
Vis Spectroscopy ◽  
Air Water Interface ◽  
Nickel Cation

Coordination-induced spin crossover (CISCO) in nickel(II) porphyrinates is an intriguing phenomenon that is interesting from both fundamental and practical standpoints. However, in most cases, realization of this effect requires extensive synthetic protocols or extreme concentrations of extra-ligands. Herein we show that CISCO effect can be prompted for the commonly available nickel(II) tetraphenylporphyrinate, NiTPP, upon deposition of this complex at the air/water interface together with a ruthenium(II) phthalocyaninate, CRPcRu(pyz)2, bearing two axial pyrazine ligands. The latter was used as a molecular guiderail to align Ni···Ru···Ni metal centers for pyrazine coordination upon lateral compression of the system, which helps bring the two macrocycles closer together and forces the formation of Ni–pyz bonds. The fact of Ni(II) porphyrinate switching from low- to high-spin state upon acquiring additional ligands can be conveniently observed in situ via reflection-absorption UV-vis spectroscopy. The reversible nature of this interaction allows for dissociation of Ni–pyz bonds, and thus, change of nickel cation spin state, upon expansion of the monolayer.

scholarly journals Nanoparticle interaction with model lung surfactant monolayers

2009 ◽  
Vol 7 (suppl_1) ◽  
Author(s):  
Rakesh Kumar Harishchandra ◽  
Mohammed Saleem ◽  
Hans-Joachim Galla
Keyword(s):  
Surface Properties ◽  
Self Assembly ◽  
Current Knowledge ◽  
Surface Film ◽  
Lung Surfactant ◽  
Hydrophobic Surface ◽  
Surface Pattern ◽  
Lipid Monolayers ◽  
Water Interface ◽  
Air Water Interface

One of the most important functions of the lung surfactant monolayer is to form the first line of defence against inhaled aerosols such as nanoparticles (NPs), which remains largely unexplored. We report here, for the first time, the interaction of polyorganosiloxane NPs (AmorSil20: 22 nm in diameter) with lipid monolayers characteristic of alveolar surfactant. To enable a better understanding, the current knowledge about an established model surface film that mimics the surface properties of the lung is reviewed and major results originating from our group are summarized. The pure lipid components dipalmitoylphosphatidylcholine and dipalmitoylphosphatidylglycerol have been used to study the biophysical behaviour of their monolayer films spread at the air–water interface in the presence of NPs. Film balance measurements combined with video-enhanced fluorescence microscopy have been used to investigate the formation of domain structures and the changes in the surface pattern induced by NPs. We are able to show that NPs are incorporated into lipid monolayers with a clear preference for defect structures at the fluid–crystalline interface leading to a considerable monolayer expansion and fluidization. NPs remain at the air–water interface probably by coating themselves with lipids in a self-assembly process, thereby exhibiting hydrophobic surface properties. We also show that the domain structure in lipid layers containing surfactant protein C, which is potentially responsible for the proper functioning of surfactant material, is considerably affected by NPs.

Incessant and economical technique for in-situ preparation of metallicnano on/in polyester fabric

2021 ◽  
Vol 64 (2) ◽  
pp. 68-70
Author(s):  
Satyajeet B. Chaudhari ◽  
Bharat H. Patel ◽  
Aadhar A. Mandot
Keyword(s):  
Metal Ion ◽  
Metallic Nanoparticles ◽  
Room Temperature ◽  
Polyester Fabric ◽  
Atmospheric Conditions ◽  
Spherical Nanoparticles ◽  
In Situ Preparation

Composite textiles consisting of metallic nanoparticles dispersed in textiles fabric have been prepared by the reduction of metal ion from its salt at room temperature under normal atmospheric conditions. Morphology and structures have been investigated by SEM. Spherical nanoparticles were found to be homogeneously dispersed in/on the polyester (PET) fiber and the particles were elementally analyzed by the XRF technique.

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