Nanoscale Actuation of Thermoreversible Polymer Brushes Coupled with Localized Surface Plasmon Resonance of Gold Nanoparticles

Mitsuishi, Masaya; Koishikawa, Yasushi; Tanaka, Hiroyuki; Sato, Eriko; Mikayama, Takeshi; Matsui, Jun; Miyashita, Tokujı

doi:10.1021/la701215t

Cited by 81 publications

(85 citation statements)

References 12 publications

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“…Polymer brushes cover a wide range of applications. Due to their responsive nature, they are an important tool for the development of smart surfaces and for sensor and actuator applications in nanotechnology [20][21][22]. Further, they come into play in biological applications [23][24][25][26][27] and for biomedical applications as drug delivery systems [2,[28][29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Stimuli-Responsive Polyelectrolyte Brushes As a Matrix for the Attachment of Gold Nanoparticles: The Effect of Brush Thickness on Particle Distribution

et al. 2014

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The effect of brush thickness on the loading of gold nanoparticles (AuNPs) within stimuli-responsive poly-(N,N-(dimethylamino ethyl) methacrylate) (PDMAEMA) polyelectrolyte brushes is reported. Atom transfer radical polymerization (ATRP) was used to grow polymer brushes via a "grafting from" approach. The brush thickness was tuned by varying the polymerization time. Using a new type of sealed reactor, thick brushes were synthesized. A systematic study was performed by varying a single parameter (brush thickness), while keeping all other parameters constant. AuNPs of 13 nm in diameter were attached by incubation. X-ray reflectivity, electron scanning microscopy and ellipsometry were used to study the particle loading, particle distribution and interpenetration of the particles within the brush matrix. A model for the structure of the brush/particle hybrids was derived. The particle number densities of attached AuNPs depend on the brush thickness, as do the optical properties of the hybrids. An increasing particle number density was found for increasing brush thickness, due to an increased surface roughness.

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Section: Introductionmentioning

confidence: 99%

Stimuli-Responsive Polyelectrolyte Brushes As a Matrix for the Attachment of Gold Nanoparticles: The Effect of Brush Thickness on Particle Distribution

et al. 2014

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“…The phase transition has been harnessed for AMP through the changes in refractive index of the polymers and/or interparticle coupling [59][60][61][62][63][64]. As demonstrated by Mistsuishi and colleagues (Figure 2A), Au nanoparticles embedded in PNIPAM brushes exhibit thermally controllable peak shifts in the LSPRs due to a refractive index change caused by the phase transition of the polymers [59].…”

Section: Responsive Polymersmentioning

confidence: 98%

“…Since SPs exist at the near field of the nanostructures with a subwavelength skin depth in dielectric materials, 3D organic materials interact with a whole field of SPs [57][58][59][60][61][62][63][64][65][66][67]. As a result, the AMP performances based on 3D organic materials largely depend on the materials' switchability and tunability in the optical properties, as well as the sensitivity of plasmonic nanostructures.…”

Section: Three-dimensional Organic Materialsmentioning

confidence: 99%

Active molecular plasmonics: tuning surface plasmon resonances by exploiting molecular dimensions

et al. 2015

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Molecular plasmonics explores and exploits the molecule-plasmon interactions on metal nanostructures to harness light at the nanoscale for nanophotonic spectroscopy and devices. With the functional molecules and polymers that change their structural, electrical, and/or optical properties in response to external stimuli such as electric fields and light, one can dynamically tune the plasmonic properties for enhanced or new applications, leading to a new research area known as active molecular plasmonics (AMP). Recent progress in molecular design, tailored synthesis, and self-assembly has enabled a variety of scenarios of plasmonic tuning for a broad range of AMP applications. Dimension (i.e., zero-, two-, and threedimensional) of the molecules on metal nanostructures has proved to be an effective indicator for defining the specific scenarios. In this review article, we focus on structuring the field of AMP based on the dimension of molecules and discussing the state of the art of AMP. Our perspective on the upcoming challenges and opportunities in the emerging field of AMP is also included.

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“…It is therefore important to be able to study and understand wanted and unwanted processes in polymers, such as the swellingshrinking transition, in response to external stimuli. In addition, active-stimuli-responsive polymers and polymer brushes have applications in e.g., optoelectronics, nanoactuators and nanosensors [42] .…”

Section: Polymer Swellingmentioning

confidence: 99%

“…The latter would require immobilization of the polymer/brush onto plasmonically active nanostructures. Such a refractive index based approach to LSPR detection of polymer swelling-shrinking was fi rst taken by Mitsuishi et al in 2007 who used gold nanoparticles immobilized on a substrate [42] . The polymer brushes [poly(N-isopropylacrylamide)] were also attached to the substrate and located in between the gold nanoparticles as illustrated in Figure 4C.…”

Section: Polymer Swellingmentioning

confidence: 99%

Nanoplasmonic sensing for nanomaterials science

Larsson¹,

Syrenova

Langhammer

2012

Nanophotonics

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Nanoplasmonic sensing has over the last two decades emerged as and diversifi ed into a very promising experimental platform technology for studies of biomolecular interactions and for biomolecule detection (biosensors). Inspired by this success, in more recent years, nanoplasmonic sensing strategies have been adapted and tailored successfully for probing functional nanomaterials and catalysts in situ and in real time. An increasing number of these studies focus on using the localized surface plasmon resonance (LSPR) as an experimental tool to study a process of interest in a nanomaterial, with a materials science focus. The key assets of nanoplasmonic sensing in this area are its remote readout, non-invasive nature, single particle experiment capability, ease of use and, maybe most importantly, unmatched fl exibility in terms of compatibility with all material types (particles and thin/thick layers, conductive or insulating) are identifi ed. In a direct nanoplasmonic sensing experiment the plasmonic nanoparticles are active and simultaneously constitute the sensor and the studied nano-entity. In an indirect nanoplasmonic sensing experiment the plasmonic nanoparticles are inert and adjacent to the material of interest to probe a process occurring in/on this material. In this review we defi ne and discuss these two generic experimental strategies and summarize the growing applications of nanoplasmonic sensors as experimental tools to address materials science-related questions.

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Nanoscale Actuation of Thermoreversible Polymer Brushes Coupled with Localized Surface Plasmon Resonance of Gold Nanoparticles

Cited by 81 publications

References 12 publications

Stimuli-Responsive Polyelectrolyte Brushes As a Matrix for the Attachment of Gold Nanoparticles: The Effect of Brush Thickness on Particle Distribution

Stimuli-Responsive Polyelectrolyte Brushes As a Matrix for the Attachment of Gold Nanoparticles: The Effect of Brush Thickness on Particle Distribution

Active molecular plasmonics: tuning surface plasmon resonances by exploiting molecular dimensions

Nanoplasmonic sensing for nanomaterials science

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