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The defined assembly of nanoparticles (NPs) in polymer matrices is an important prerequisite for next-generation functional materials. A promising approach to control NP positions in polymer matrices at the nanometer scale is the use of block copolymers. It allows the selective deposition of NPs in nanodomains, but the final defined and ordered positioning of the NPs within the domains has not been possible. This can now be achieved by coating NPs with block copolymers. The self-assembly of block copolymer-coated NPs directly leads to ordered microdomains containing ordered NP arrays with exactly one NP per unit cell. By variation of the grafting density, the inter-nanoparticle distance can be controlled from direct NP surface contact to surface separations of several nanometers, determined by the thickness of the polymer shell. The method can be applied to a wide variety of block copolymers and NPs and is thus suitable for a broad range of applications.
This article was published in the following journal.
Name: Angewandte Chemie (International ed. in English)
Herein, a novel methodology to overcome the predominance of π-π interactions on the organization of rod-coil diblock copolymer is reported. A diblock copolymer poly(3-hexylthiophene)-block-poly(ethy...
Using two orthogonal external stimuli, we achieved programmable "staged" surface patterning and self-assembly of inorganic nanoparticles (NPs). For gold NPs capped with end-grafted poly(styrene-block-...
This work reports a massively parallel approach for synthesizing inorganic nanoparticles (Au, Ag, Se, and mixed oxides of Cu, Co, Ni, Ge, and Ta) based upon lithographically generated arrays of square...
Nanosquare array is an indispensable element for the integrated circuit design of electronic devices. Block copolymer lithography, a promising bottom-up approach for sub-10 nm patterning, has revealed...
A hierarchically assembled necklace composed of amphiphilic diblock copolymer micelles is exquisitely produced by capitalizing on two concurrent self-assembly processes at different scales (i.e., "bre...
Cataract is the leading cause of vision loss and blindness in the world,surgery is the only available option to correct the problem and the major reasons for low cataract surgical rates in...
This study aimed to study the efficacy of zinc oxide nanoparticles coated socks in prevention of unpleasant foot odor
OBJECTIVES: I. Compare tolerance to and therapeutic impact of copolymer 1, a mixture of synthetic polypeptides, with placebo in patients with relapsing-remitting multiple sclerosis.
This study evaluates whether whole blood transferred through the new POLFA needle assembly meets supernatant hemoglobin acceptability standards.
The clinical investigation is an international, prospective, double-blind, randomized safety and efficacy study. The purpose of this study is to evaluate the safety and performance of the ...
Nanometer-sized particles that are nanoscale in three dimensions. They include nanocrystaline materials; NANOCAPSULES; METAL NANOPARTICLES; DENDRIMERS, and QUANTUM DOTS. The uses of nanoparticles include DRUG DELIVERY SYSTEMS and cancer targeting and imaging.
Synthesized magnetic particles under 100 nanometers possessing many biomedical applications including DRUG DELIVERY SYSTEMS and CONTRAST AGENTS. The particles are usually coated with a variety of polymeric compounds.
Copolymer of divinyl ether and maleic anhydride that acts as an immunostimulant with antineoplastic and anti-infective properties. It is used in combination with other antineoplastic agents.
Nanoparticles produced from metals whose uses include biosensors, optics, and catalysts. In biomedical applications the particles frequently involve the noble metals, especially gold and silver.
A layer of protein coating adsorbed by NANOPARTICLES upon entry into PLASMA or other protein-containing biological fluids, which affects how nanoparticles are internalized by cells and cleared from the body.