Amphiphilic Janus Particles Generated via a Combination of Diffusion-Induced Phase Separation and Magnetically Driven Dewetting and Their Synergistic Self-Assembly

2016 ◽  
Vol 28 (16) ◽  
pp. 3131-3137 ◽  
Author(s):  
Xiuyu Wang ◽  
Xueyan Feng ◽  
Guiping Ma ◽  
Li Yao ◽  
Maofa Ge
Keyword(s):  
Phase Separation ◽  
Self Assembly ◽  
Janus Particles

scholarly journals Substrate wettability guided oriented self assembly of Janus particles

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Meneka Banik ◽  
Shaili Sett ◽  
Chirodeep Bakli ◽  
Arup Kumar Raychaudhuri ◽  
Suman Chakraborty ◽  
...  
Keyword(s):  
Self Assembly ◽  
Janus Particles ◽  
Water Molecules ◽  
Functional Coatings ◽  
Hexagonal Close Packed ◽  
Local Densities ◽  
Inhomogeneous Properties ◽  
Metal Polymer ◽  
Specific Orientation

AbstractSelf-assembly of Janus particles with spatial inhomogeneous properties is of fundamental importance in diverse areas of sciences and has been extensively observed as a favorably functionalized fluidic interface or in a dilute solution. Interestingly, the unique and non-trivial role of surface wettability on oriented self-assembly of Janus particles has remained largely unexplored. Here, the exclusive role of substrate wettability in directing the orientation of amphiphilic metal-polymer Bifacial spherical Janus particles, obtained by topo-selective metal deposition on colloidal Polymestyere (PS) particles, is explored by drop casting a dilute dispersion of the Janus colloids. While all particles orient with their polymeric (hydrophobic) and metallic (hydrophilic) sides facing upwards on hydrophilic and hydrophobic substrates respectively, they exhibit random orientation on a neutral substrate. The substrate wettability guided orientation of the Janus particles is captured using molecular dynamic simulation, which highlights that the arrangement of water molecules and their local densities near the substrate guide the specific orientation. Finally, it is shown that by spin coating it becomes possible to create a hexagonal close-packed array of the Janus colloids with specific orientation on differential wettability substrates. The results reported here open up new possibilities of substrate-wettability driven functional coatings of Janus particles, which has hitherto remained unexplored.

Nanoscale Tubular and Sheetlike Superstructures from Hierarchical Self-Assembly of Polymeric Janus Particles

2008 ◽  
Vol 120 (52) ◽  
pp. 10325-10328 ◽  
Author(s):  
Lin Cheng ◽  
Guangzhao Zhang ◽  
Lei Zhu ◽  
Daoyong Chen ◽  
Ming Jiang
Keyword(s):  
Self Assembly ◽  
Janus Particles

Dispersion, Phase Separation, and Self-Assembly of Polymer-Grafted Nanorod Composites

2017 ◽  
Vol 50 (21) ◽  
pp. 8816-8826 ◽  
Author(s):  
Vaishnavi Gollanapalli ◽  
Anirudh Manthri ◽  
Uma K. Sankar ◽  
Mukta Tripathy
Keyword(s):  
Phase Separation ◽  
Self Assembly ◽  
Dispersion Phase

scholarly journals Efficient Fabrication of Pure, Single-Chain Janus Particles through Their Exclusive Self-Assembly in Mixtures with Their Analogues

2018 ◽  
Vol 7 (11) ◽  
pp. 1278-1282 ◽  
Author(s):  
Li Jiang ◽  
Mingxiu Xie ◽  
Jinkang Dou ◽  
Haodong Li ◽  
Xiayun Huang ◽  
...  
Keyword(s):  
Self Assembly ◽  
Janus Particles ◽  
Single Chain

scholarly journals Water vapor induced self-assembly of islands/honeycomb structure by secondary phase separation in polystyrene solution with bimodal molecular weight distribution

2021 ◽  
Author(s):  
Maciej Łojkowski ◽  
Adrian Chlanda ◽  
Emilia Choińska ◽  
Wojciech Swieszkowski
Keyword(s):  
Molecular Weight ◽  
Phase Separation ◽  
Molecular Weight Distribution ◽  
Weight Distribution ◽  
Self Assembly ◽  
Secondary Phase ◽  
Honeycomb Structure ◽  
Polymer Chains ◽  
Molecular Weights ◽  
Secondary Phase Separation

<p>The formation of complex structures in thin films is of interest in many fields. Segregation of polymer chains of different molecular weights is a well-known process. However, here, polystyrene with bimodal molecular weight distribution, but no additional chemical modification was used. It was proven that at certain conditions, the phase separation occurred between two fractions of bimodal polystyrene/methyl ethyl ketone solution. The films were prepared by spin-coating, and the segregation between polystyrene phases was investigated by force spectroscopy. Next, water vapour induced secondary phase separation was investigated. The introduction of moist airflow induced the self-assembly of the lower molecular weight into islands and the heavier fraction into a honeycomb. As a result, an easy, fast, and effective method of obtaining island/honeycomb morphologies was demonstrated. The possible mechanisms of the formation of such structures were discussed.</p>

Molecular Camouflage: Making Use of Protecting Groups To Control the Self-Assembly of Inorganic Janus Particles onto Metal-Chalcogenide Nanotubes by Pearson Hardness

2011 ◽  
Vol 50 (51) ◽  
pp. 12271-12275 ◽  
Author(s):  
Jugal Kishore Sahoo ◽  
Muhammad Nawaz Tahir ◽  
Faegheh Hoshyargar ◽  
Bahar Nakhjavan ◽  
Robert Branscheid ◽  
...  
Keyword(s):  
Self Assembly ◽  
The Self ◽  
Protecting Groups ◽  
Janus Particles ◽  
Metal Chalcogenide

Interfacial Self-Assembly of Amphiphilic Dual Temperature Responsive Actuating Janus Particles

2018 ◽  
Vol 28 (21) ◽  
pp. 1800629 ◽  
Author(s):  
Tristan Hessberger ◽  
Lukas B. Braun ◽  
Rudolf Zentel
Keyword(s):  
Self Assembly ◽  
Janus Particles ◽  
Temperature Responsive
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