scholarly journals Multifunctional metal-polymer nanoagglomerates from single-pass aerosol self-assembly

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Jeong Hoon Byeon
Keyword(s):  
Self Assembly ◽  
Single Pass ◽  
Metal Polymer

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.

Self-Assembly of Mesoscopic Metal-Polymer Amphiphiles

Science ◽  
2004 ◽  
Vol 303 (5656) ◽  
pp. 348-351 ◽  
Author(s):  
S. Park
Keyword(s):  
Self Assembly ◽  
Metal Polymer

Self-assembly of metal–polymer analogues of amphiphilic triblock copolymers

2007 ◽  
Vol 6 (8) ◽  
pp. 609-614 ◽  
Author(s):  
Zhihong Nie ◽  
Daniele Fava ◽  
Eugenia Kumacheva ◽  
Shan Zou ◽  
Gilbert C. Walker ◽  
...  
Keyword(s):  
Self Assembly ◽  
Triblock Copolymers ◽  
Metal Polymer

scholarly journals The Poly(Chloro-P-Xylylene)-Ag Metal-Polymer Nanocomposites Obtained by Controlled Vapor-Phase Synthesis for SERS Effect Realisation

Coatings ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1171
Author(s):  
Irina Boginskaya ◽  
Aliia Gainutdinova ◽  
Alexey Gusev ◽  
Karen Mailyan ◽  
Anton Mikhailitsyn ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Polymer Nanocomposites ◽  
Vapor Phase ◽  
Self Assembly ◽  
Silver Content ◽  
Nanocomposite Films ◽  
Morphological Properties ◽  
Surface Enhanced Raman ◽  
Vapor Phase Polymerization ◽  
Metal Polymer

Substrates based on the metal-polymer nanocomposites 2,3-dichloro-p-xylylene-silver (PCPX-Ag) that realize the effect of surface-enhanced Raman scattering (SERS) were developed. To obtain nanocomposites, the vapor-phase polymerization method was used (VDP), which makes it possible to control the nanocomposite microstructure. In the process of self-assembly during VDP, nanocomposite films with inclusions of silver particles were formed on the polycore substrates. Silver content varied from 2.5 to 16% vol. The possibility of using such substrates for the detection of low-molecular substances, for example 5,5′-dithiobis- (2-nitrobenzoic acid) (DTNB) analyte, by the SERS method with an enhancement factor of up to 104, was demonstrated. The dependence of the SERS spectra enhancement on the microstructure of the nanocomposite and the silver content was determined. The optical and morphological properties of nanocomposites were also investigated and their dependence on the silver content was shown. It has been demonstrated that the nanocomposite is SERS selective since when working with complex solutions in the presence of high molecular weight substances, signal enhancement was only observed for low molecular weight substances.

Shape Variations and Control in Self-Assembled Metal Nanoclusters

2002 ◽  
Vol 739 ◽  
Author(s):  
M. Zubris ◽  
M. Solimando ◽  
E. P. Goldberg ◽  
S. Reich ◽  
R. Tannenbaum
Keyword(s):  
Hybrid Materials ◽  
Polymer Matrix ◽  
Self Assembly ◽  
Polymer System ◽  
Iron Pentacarbonyl ◽  
Metal Nanoclusters ◽  
Organometallic Precursor ◽  
Polymer Metal ◽  
And Control ◽  
Metal Polymer

ABSTRACTThe selective interaction of metal clusters with various polymers constitutes the basis for the self-assembly approach to the synthesis of organic-inorganic hybrid materials, that leads to the control of particle size, geometry and dispersion gradient. Metal particles were synthesized by the thermal decomposition of an organometallic precursor, in this case, iron pentacarbonyl, in the presence of a polymer matrix. Under the conditions utilized for these reactions, the aggregation of the metallic clusters competed with the interactions between the growing metal fragments and the polymer matrix. The dominance of one reaction route as compared to the other, ultimately determined the equilibrium particle shape, size and distribution for each metal-polymer system. In this work, we attempted to analyze the formation of iron oxide nanoclusters in several structurally-distinct polymers, and developed a general mechanistic view to explain the characteristics of the polymer-metal oxide hybrid materials that were obtained.

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