Self-assembled microrings of Au nanoparticle and Au nanorod clusters formed at the equators of Janus particles

Hirai, Yasuaki; Yabu, Hiroshi

doi:10.1039/c9ra02767j

Cited by 2 publications

(2 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Note that, in such scenarios, the nanoparticles are located at the three‐phase contact line where the two polymers and the dispersion medium meet, due to the amphiphilic nature of the modified nanoparticles. Furthermore, selective alignment of gold nanoparticles and nanorods at equators of Janus particles by binary polymer modification of nanoparticles and nanorods ( Figure ) . Since two polymers immobilized to the surface of gold nanoparticles and nanorods have affinities to respective hemispheres of Janus particles are, these binary polymer‐modified nanoparticles and nanorods energetically segregated to the equators of the Janus particles.…”

Section: Composite Microspheresmentioning

confidence: 99%

See 1 more Smart Citation

Fabrication of Nanostructured Composite Microspheres Based on the Self‐Assembly of Polymers and Functional Nanomaterials

Yabu

2019

Part & Part Syst Charact

Self Cite

View full text Add to dashboard Cite

Achieving the specific properties required for the applications discussed above necessitates control over the morphologies of the polymer particles as well as the precise alignment of functional nanoparticles at particle interiors and surfaces. Studies using seed polymerization and related so-called second generation particle preparation techniques have succeeded in preparing polymer microspheres having anisotropic morphologies. [10] These techniques for the synthesis of nonspherical polymer microparticles are both powerful and practical, although the particle shape has been found to be greatly affected by the preparation conditions employed. These conditions involve numerous parameters, and so controlling the particle morphology remains challenging. In addition to first and second generation particle preparation technologies employing emulsion polymerization, recent studies have demonstrated the fabrication of nanostructured microspheres based on the phase separation of polymers. [11,12] These methods can be considered as the third generation of progress in this field and allow the tuning of particle morphologies in association with phase separation theories developed during prior work with bulk polymer blends, alloys, and composites. The alignment of nanoparticles in phase separated polymer microspheres could lead to nanostructured particles with many practical applications. Figure 1 presents some of the many methods developed for the synthesis of polymer microspheres. This diagram indicates representative existing approaches used to obtain controlled particle sizes, as well as specific phases in the interior and at the surfaces of such microspheres, and can be divided into two main categories; top-down and bottom-up. These two types of procedures differ with regard to the process used to form internal and surface structures. The polymerization or crosslinking of uniformly sized oil/water (O/W) or water/oil (W/O) emulsion droplets formed by microfluidic devices is a well-known topdown fabrication technique used to produce structured polymer microspheres with sizes on the scale of tens of micrometers. [13] Taking advantage of the laminar flow inside narrow capillaries, multiple phases can be formed in the interiors of the emulsion droplets, resulting in the formation of multiphase polymer microspheres. [14] In contrast, in the case of bottom-up approaches, the phase separation of polymers is used to create internal and surface nanostructures. The latter methods have received considerable attention because they permit size control on a variety of size scales as well as morphological tuning. [15] This Review examines recent developments in the morphological control of polymer microspheres fabricated via the phase separation of polymers as well as the alignment of functional nanoparticles inside microspheres prepared by so-called bottom-up synthesis techniques. Several methods for adjusting the internal and surface morphologies of polymer microspheres based on the phase separation of polymer blends and block copoly...

show abstract

Section: Composite Microspheresmentioning

confidence: 99%

Section: Composite Microspheresmentioning

confidence: 99%

Fabrication of Nanostructured Composite Microspheres Based on the Self‐Assembly of Polymers and Functional Nanomaterials

Yabu

2019

Part & Part Syst Charact

Self Cite

View full text Add to dashboard Cite

show abstract

One-pot generation of gold-polymer hybrid nanoparticles using a miniemulsion reactor system

Fukui

Fujino

Fujimoto

2023

Colloids and Surfaces A: Physicochemical and Engineering Aspect

View full text Add to dashboard Cite

Self-assembled microrings of Au nanoparticle and Au nanorod clusters formed at the equators of Janus particles

Abstract: A method for fabricating polymer Janus particles with metal nanoparticle microring structures at their equators has been developed.

Cited by 2 publications

References 28 publications

Fabrication of Nanostructured Composite Microspheres Based on the Self‐Assembly of Polymers and Functional Nanomaterials

Fabrication of Nanostructured Composite Microspheres Based on the Self‐Assembly of Polymers and Functional Nanomaterials

One-pot generation of gold-polymer hybrid nanoparticles using a miniemulsion reactor system

Contact Info

Product

Resources

About