Functional hybrid materials

Fahmi, Amir; Pietsch, Torsten; Mendoza, Ćesar; Cheval, Nicolas

doi:10.1016/s1369-7021(09)70159-2

Cited by 77 publications

(64 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Incorporating nanoparticles (NPs) into polymeric materials is a practical pathway to develop engineered plastics with improved mechanical, optical, electrical, magnetic, and other properties. It is also one of the most attractive ways to obtain well‐defined structures at different length scales by controlling the spatial organization of NPs inside polymers . The ability to control the length, spatial, and orientational organization of block copolymer (BCP) morphologies (from spherical to cylindrical, bicontinuous, and lamellar structures) makes BCP materials attractive as templates for manipulating the spatial location of inorganic NPs at various lengths, from the micro to the nano scale.…”

Section: Introductionmentioning

confidence: 99%

“…It is also one of the most attractive ways to obtain well-defined structures at different length scales by controlling the spatial organization of NPs inside polymers. [1][2][3][4][5][6][7][8][9][10][11][12][13] The ability to control the length, spatial, and orientational organization of block copolymer (BCP) morphologies (from spherical to cylindrical, bicontinuous, and lamellar structures) makes BCP materials attractive as templates for manipulating the spatial location of inorganic NPs at various lengths, from the micro to the nano scale. Even though several general strategies based on the understanding of complex BCP-particle interactions have been proposed, precisely controlling the location of NPs in polymer matrices remains an obstacle in fabricating BCP-NP functional materials.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Design and Fabrication of Janus Nanoparticles for Interfacial Distribution in Block Copolymers

Yang

Loos

2016

Macromol. Chem. Phys.

View full text Add to dashboard Cite

Hybrid composites with highly ordered structures show promise for applications in various fields and thus there is great interest in their fabrication. In this context, Janus nanoparticles (JNPs) are synthesized with the aim of further incorporating them into polystyrene‐block‐poly(2‐vinylpyridine) (PS‐b‐P2VP) block copolymers to fabricate hybrid composites. It is observed that the dispersed JNPs are located at the boundary of the two morphological phases in PS‐b‐P2VP. The orientation of the lamellar structure in the bottom and free surface region of the block copolymer (BCP) composites shows a distinct difference as the composition of the JNPs is adjusted. The processing conditions of the nanoparticle/BCP composites are found to play an important role in achieving the desired structures.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and Fabrication of Janus Nanoparticles for Interfacial Distribution in Block Copolymers

Yang

Loos

2016

Macromol. Chem. Phys.

View full text Add to dashboard Cite

show abstract

“…[ 22 ] BCPs consisting of styrene and 4-vinylpyridine (PSb -P4VP) have been successfully employed as ligands for AuNP, incorporating the AuNP in either the PS or the P4VP phase. [23][24][25][26][27][28][29][30] A promising strategy for the incorporation of AuNP in PS-b-P4VP is through supramolecular assembly by the treatment of thin PS-b -P4VP fi lm with a dispersion of AuNP, leading to the incorporation of AuNP into the PS-block. [31][32][33] Controlled self-assembly of AuNP within the P4VP phase was achieved using dodecanethiol (DT) or 3-n -pentadecylthiol (PDP) as ligands for theAuNP.…”

Section: Introductionmentioning

confidence: 99%

Self‐Organization of Gold Nanoparticle Assemblies with 3D Spatial Order and Their External Stimuli Responsiveness

Serrano

König

Haataja

et al. 2015

Macromol. Rapid Commun.

View full text Add to dashboard Cite

Gold nanoparticles (AuNP) with pyridyl end-capped polystyrenes (PS-4VP) as "quasi-monodentate" ligands self-assemble into ordered PS-4VP/AuNP nanostructures with 3D hexagonal spatial order in the dried solid state. The key for the formation of these ordered structures is the modulation of the ratio AuNP versus ligands, which proves the importance of ligand design and quantity for the preparation of novel ordered polymer/metal nanoparticle conjugates. Although the assemblies of PS-4VP/AuNP in dispersion lack in high dimensional order, strong plasmonic interactions are observed due to close contact of AuNP. Applying temperature as an external stimulus allows the reversible distortion of plasmonic interactions within the AuNP nanocomposite structures, which can be observed directly by naked eye. The modulation of the macroscopic optical properties accompanied by this structural distortion of plasmonic interaction opens up very interesting sensoric applications.

show abstract

“…Therefore, a big challenge today is to develop routes for organizing colloids onto substrates, especially for non magnetic nanoparticles (Maurer et al 2007). Among the most appealing strategies for industrial applications, is that based on the use of block copolymers since they exhibit an exceptional ability to self-organize into microphase-separated domains with controlled shapes and sizes (Fahmi et al 2009;Kim et al 2004). Indeed for lithography, block copolymers can provide not only long-range ordered templates but also small feature size and a large variety of patterns, ranging from spheres to lamellar shapes (Tseng and Darling 2010, Krausch andMagerle 2002).…”

mentioning

confidence: 99%

Optical properties of Au colloids self-organized into rings via copolymer templates

et al. 2013

View full text Add to dashboard Cite

The investigation of the Localized Surface Plasmon Resonance for plasmonic nanoparticles has opened new perspectives for optical nanosensors. Today, an issue in plasmonics is the development of large scale and low cost devices. We focus here on the Langmuir-Blodgett technique to self-organize gold nanoparticles (~ 7 nm) into rings (~ 60 nm) via polystyrene-b-polymethylmethacrylate templates. In particular, we investigated the optical properties of organized gold nanoparticle rings over large areas and report experimental evidence for plasmon resonances of both individual nanoparticles and collective modes. This paves the way for designing devices with multiple resonances in the visible-Infra-red spectrum and developing optical sensors.In parallel with progress in characterization techniques, much effort has been made to set up new strategies for smaller metallic nanoparticle synthesis. Two approaches have been developed to synthesize metallic nano-objects: the top-down and the bottom-up ones. The top-down approach consists of taking and etching a massive material down to the desired shape and size. The associated processes, such as Electron Beam Lithography (Haynes et al. 2003) or Focused-Ion-Etching (Tseng 2004), take advantage of high reproducibility in finding immediate applications in the industry. This approach now allows for the fabrication of structures as small as 20 nm in size but it is still challenging to obtain 5-10 nm structures with well-defined edges via these techniques (Pelton et al. 2008). In order to go below this threshold, synthetic routes, like colloidal synthesis (Sun and Xia 2002), based on the bottom-up approach have been developed for about twenty years. The great advantage of this approach is that it provides significant amounts of nano-objects with dimensions smaller than 20 nm or even 10 nm (Soumare et al 2009). Nevertheless, for the moment, large-scale applications are still limited with this approach due to the difficulty of organizing such metallic nano-objects over large areas. Therefore, a big challenge today is to develop routes for organizing colloids onto substrates, especially for non magnetic nanoparticles (Maurer et al. 2007). Among the most appealing strategies for industrial applications, is that based on the use of block copolymers since they exhibit an exceptional ability to self-organize into microphase-separated domains with controlled shapes and sizes (Fahmi et al. 2009;Kim et al. 2004). Indeed for lithography, block copolymers can provide not only long-range ordered templates but also small feature size and a large variety of patterns, ranging from spheres to lamellar shapes (Tseng and Darling 2010, Krausch andMagerle 2002). The Reactive Ion Etching (RIE) rate of polymethylmethacrylate (PMMA) is sufficiently lower for CF 4 or O 2 gas compared to that of polystyrene (PS) to allow the selective removal of PMMA in PS-b-PMMA block copolymer templates Hiraoka 2002, Asakawa andFujimoto 2005). It has also been shown for PS-b-PMMA block copolymer templates that PMMA can be...

show abstract

Functional hybrid materials

Cited by 77 publications

References 24 publications

Design and Fabrication of Janus Nanoparticles for Interfacial Distribution in Block Copolymers

Design and Fabrication of Janus Nanoparticles for Interfacial Distribution in Block Copolymers

Self‐Organization of Gold Nanoparticle Assemblies with 3D Spatial Order and Their External Stimuli Responsiveness

Optical properties of Au colloids self-organized into rings via copolymer templates

Contact Info

Product

Resources

About