Synthesis of ZnO Nanoparticles Using Reverse Micelles of Block Copolymer Hybridized with ZnO/PMMA

2014 ◽  
Vol 71 (12) ◽  
pp. 644-650
Author(s):  
Kohji YOSHINAGA ◽  
Atsushi YONEZAWA ◽  
Suguru MOTOKUCHO ◽  
Ken KOJIO
Keyword(s):  
Block Copolymer ◽  
Zno Nanoparticles ◽  
Reverse Micelles

Supramolecularly cross-linked amphiphilic block copolymer assembly by the dipolar interaction of a merocyanine dye

2020 ◽  
Vol 11 (3) ◽  
pp. 695-703 ◽  
Author(s):  
Aritra Rajak ◽  
Chandan Kumar Karan ◽  
Patrick Theato ◽  
Anindita Das
Keyword(s):  
Block Copolymer ◽  
Reverse Micelles ◽  
Dipolar Interaction ◽  
Amphiphilic Block Copolymer ◽  
Block Copolymer Assembly ◽  
Copolymer Assembly

Dipolar interaction driven dimerization of a merocyanine (MC) dye has been exploited to achieve non-covalently crosslinked stable micelles in water and reverse micelles in toluene with emissive properties from a MC-pendant amphiphilic block copolymer.

Confinement of Semiconductor ZnO Nanoparticles in Block Copolymer Nanostructure

2017 ◽  
Vol 121 (30) ◽  
pp. 16617-16628 ◽  
Author(s):  
Anna Malafronte ◽  
Finizia Auriemma ◽  
Rocco Di Girolamo ◽  
Carmen Sasso ◽  
Claudia Diletto ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Zno Nanoparticles

Reverse micelles of star-block copolymer as nanoreactors for preparation of gold nanoparticles

Polymer ◽  
2006 ◽  
Vol 47 (26) ◽  
pp. 8480-8487 ◽  
Author(s):  
Junbo Li ◽  
Linqi Shi ◽  
Yingli An ◽  
Yan Li ◽  
Xi Chen ◽  
...  
Keyword(s):  
Gold Nanoparticles ◽  
Block Copolymer ◽  
Reverse Micelles ◽  
Star Block Copolymer

Concentrated reverse micelles in a random graft block copolymer system: structure and in-situ synthesis of silver nanoparticles

2006 ◽  
Vol 285 (6) ◽  
pp. 673-680 ◽  
Author(s):  
Carlos Rodríguez-Abreu ◽  
Massimo Lazzari ◽  
Dharmesh Varade ◽  
Masaya Kaneko ◽  
Kenji Aramaki ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Block Copolymer ◽  
Reverse Micelles ◽  
In Situ Synthesis ◽  
System Structure

scholarly journals FEATURES OF MOLECULAR AGGREGATION OF BLOCK COPOLYMER ON BASE OF STYRENE AND POLYETHYLENE GLYCOL IN SOLUTIONS

2019 ◽  
Vol 62 (12) ◽  
pp. 65-70
Author(s):  
Olga I. Kropacheva ◽  
Darya V. Vavilova
Keyword(s):  
Polyethylene Glycol ◽  
Block Copolymer ◽  
Reverse Micelles ◽  
Metal Layer ◽  
Polymer Concentration ◽  
Water System ◽  
Dispersed Phase ◽  
Hydroxyl Groups ◽  
Selective Solvents ◽  
Dsc Method

This article focuses on the study of behavior of macromolecules of block copolymer on the base of styrene and polyethylene glycol in toluene media. Unique property of block copolymers is the ability of chemical heterogeneous blocks to phase separation. This process leads to the formation of micelle similar structures in selective solvents. These aggregates have the core from soluble block and the micelles capsule from insoluble block. Similar structures (reverse micelles) would be used for the purpose of stabilization of metal organosols. In this work aggregative stable reverse micelles in such systems as "toluene - water" and "toluene - methanol" have been prepared. Block copolymer of styrene and polyethylene glycol was applied as stabilizer in solutions with polymer concentration from 2.5 g/ 100 ml to 1 g/ 100 ml. Block copolymer has been synthesized by means of isocyanate cure on the end hydroxyl groups. Its structure has been confirmed by differential calorimetry spectroscopy (DSC) method. Dimension of formed particles has been determined by methods of sedimental turbidimetry and dynamic light scattering (DLS). Existence of both individual macromolecules and molecular aggregates in initial solutions has been established by DLS method. It has been found that dimensional homogeneity of organosol particles enlarges with the increase in dispersed phase content to 10 mass. %. At that, the size of the micelles in presence methanol is less than in water presence. Particles size also depends on polymer concentration in solution. The sizes of micelles in both systems increase with increasing concentration of the block copolymer, and with an increase in the content of the dispersed phase, a gradual decrease in their sizes is observed.  It was shown that the sedimentation turbidimetry method does not reflect the behavior of the copolymer molecules in solutions, which results in a large scatter of data on the determination of particle sizes of the organosol in the toluene-water system with a water content of less than 5 masses. % . Based on the data obtained, it is assumed that micelles stabilized by a block copolymer based on styrene and polyethylene glycol can be used to introduce metal particles into them, followed by the formation of a metal layer on a solid surface.

Visible light active photocatalysis on block copolymer induced strings of ZnO nanoparticles doped with carbon

2013 ◽  
Vol 1 (3) ◽  
pp. 898-905 ◽  
Author(s):  
Saji Thomas Kochuveedu ◽  
Yoon Hee Jang ◽  
Yu Jin Jang ◽  
Dong Ha Kim
Keyword(s):  
Block Copolymer ◽  
Visible Light ◽  
Zno Nanoparticles ◽  
Visible Light Active

Block Copolymer Micellar Nanoreactors for the Directed Synthesis of ZnO Nanoparticles

2010 ◽  
Vol 31 (8) ◽  
pp. 729-734 ◽  
Author(s):  
Christoph H. Braun ◽  
Thomas V. Richter ◽  
Felix Schacher ◽  
Axel H. E. Müller ◽  
Edward J. W. Crossland ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Zno Nanoparticles ◽  
Directed Synthesis
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