In situ template synthesis of one-dimensional gold nanoparticle arrays in organic nanowires

Matsushita, Taro; Fukumoto, Yurina; Kawakami, Takaya; Tsuruoka, Takaaki; Mutoh, T.; Yanagishita, Takashi; Masuda, Hideki; Nawafune, Hidemi; Akamatsu, Kensuke

doi:10.1039/c3ra42727g

Cited by 6 publications

(7 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…71 However, in situ reduction of phosphine-stabilised gold complexes in solution, in hydrogels or on a variety of templates to give nanoparticles is also known. [72][73][74][75][76][77] In the present case, in the absence of a specific reducing agent we speculate that the reduction of Au(I) is initiated by oxidation of the PPh3 ligands.…”

Section: Tidoc Studiesmentioning

confidence: 50%

New routes to organometallic molecular junctionsviaa simple thermal processing protocol

et al. 2019

View full text Add to dashboard Cite

show abstract

Section: Tidoc Studiesmentioning

confidence: 50%

New routes to organometallic molecular junctionsviaa simple thermal processing protocol

et al. 2019

View full text Add to dashboard Cite

show abstract

“…[7][8][9][10][11] Nowadays, the preparation of both kinds of nanoparticles, oen being pursued separately, has made signicant progress. [15][16][17][18][19][20][21] On one hand, polymeric NPs have been wisely recruited as templates either for the formation of metal NPs, [22][23][24][25][26] or for the three dimensional arrangement of preformed metal NPs. [12][13][14] Naturally, combining the two kinds of particles together to create hybrid nanoparticles has come into the sight of many researchers.…”

Section: Introductionmentioning

confidence: 99%

“…[12][13][14] Naturally, combining the two kinds of particles together to create hybrid nanoparticles has come into the sight of many researchers. [15][16][17][18][19][20][21] On one hand, polymeric NPs have been wisely recruited as templates either for the formation of metal NPs, [22][23][24][25][26] or for the three dimensional arrangement of preformed metal NPs. 17,[27][28][29][30] On the other hand, installing polymeric NPs with metal NPs can impart novel functional properties upon the otherwise inert polymeric materials to realize functional integration.…”

Section: Introductionmentioning

confidence: 99%

Thermosensitive mixed shell polymeric micelles decorated with gold nanoparticles at the outmost surface: tunable surface plasmon resonance and enhanced catalytic properties with excellent colloidal stability

Yin

Wang

et al. 2015

RSC Adv.

View full text Add to dashboard Cite

Hybrid particulate composites consisting of noble metal nanoparticles (NPs) and polymeric particles have attracted intensive interest, due to the possibility of combining the precious optical and catalytic properties of the former with the stimuli responsiveness and biocompatibility of the latter. However, it is challenging to prepare hybrid particles that simultaneously have tunable optical and catalytic properties as well as excellent colloidal stability. In the current work, we report a strategy for such hybrid particles, through covalently decorating the outmost surface of mixed shell polymeric micelles (MSPMs) with gold NPs. For this, two block polymers, poly(3-caprolactone)-block-(ethylene glycol) (PCL-b-PEG) and poly(3caprolactone)-block-poly(N-isopropylacrylamide) (PCL-b-PNIPAM), were prepared by ring-opening polymerization and reversible addition fragmentation chain transfer (RAFT) polymerization, respectively. Co-self-assembly of the two block polymers result in MSPMs with a PCL core and a mixed shell consisting of PEG and PNIPAM. At the end of each PNIPAM chain in the shell, thiol groups are introduced to act as anchors for the in situ formation of gold NPs. The number density of the gold NPs is conveniently tuned through varying the relative amount of PEG/PNIPAM in the micellar shell. Reversible shrinking and extension of the PNIPAM chains regulated by temperature can be used to tune the interparticle distance of the gold NPs, while the whole hybrid particles are stabilized by the stretched PEG chains. The hybrid polymeric micelles exhibit thermoresponsive surface plasmon resonance and enhanced catalytic properties as well as excellent colloidal stability. † Electronic supplementary information (ESI) available: XPS, TEM images of gold NP decorated polymeric micelles of PNIPAM or MSPMs of a PEG/PNIPAM mass ratio 1 : 9 aer heating, UV-vis absorption spectra during the reduction of 4-NP catalyzed by pure gold NPs or MSPM@AuNPs aer heating, See

show abstract

“…Here, we show that gold can be patterned in the form of randomly disposed double (or twin) stripes of atomic monolayers or of rows of nanoparticles, a new type of pattern that adds to the nanotechnology toolbox, with possible applications in plasmonic lasers, energy transport, and biosensors. − This achievement relies on using a template having a loosely packed nanostrand pattern obtained from Langmuir–Blodgett (LB) monolayers of polystyrene- b -poly(4-vinylpyridine) (PS-P4VP) blended with 3- n -pentadecylphenol (PDP) that hydrogen bonds to P4VP, as described previously. , The conditions required for the nanostrand morphology to form at the air/water interface from this system are the use of block copolymers with moderate hydrophilic content (9–19 mol % P4VP for equimolar PDP relative to the 4VP repeat unit) and relatively high spreading solution concentration. Typically, the nanostrands do not cover the entire surface but are separated from one another to a significant extent.…”

Section: Introductionmentioning

confidence: 99%

Double-Striped Metallic Patterns from PS-b-P4VP Nanostrand Templates

Chen

Perepichka

Bazuin

2014

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

A new nanometallic pattern, characterized by randomly disposed double or twin one-dimensional stripes and that adds to the nanotechnology toolbox, has been obtained from a unique template possessing the nanostrand morphology. This morphology had previously been shown to form in Langmuir-Blodgett films made from a polystyrene-poly(4-vinylpyridine) (PS-P4VP) diblock copolymer blended with 3-n-pentadecylphenol (PDP). The nanostrand backbone is composed of PS, and it is bordered along both sides by a P4VP monolayer, visualized for the first time by high resolution atomic force microscopy. The exposed P4VP alongside the nanostrands serves as sites for depositing compounds attracted selectively to P4VP. Here, both gold ions (HAuCl4·3H2O) and gold nanoparticles (AuNP, 12 nm in diameter, stabilized with sodium citrate) were complexed to the P4VP. Plasma treatment of the gold ions led to double stripes of monolayer metallic gold. To obtain dense deposition of AuNP in double rows, it was necessary to acidify the AuNP aqueous solution (pH 5.2 here). The achievement of the metallic double-stripe patterns also confirms the composition of the nanostrand morphology, which up to now had been deduced indirectly. The double-stripe pattern has possible applications for plasmonic lasers, energy transport, and biosensors.

show abstract

In situ template synthesis of one-dimensional gold nanoparticle arrays in organic nanowires

Cited by 6 publications

References 29 publications

New routes to organometallic molecular junctionsviaa simple thermal processing protocol

New routes to organometallic molecular junctionsviaa simple thermal processing protocol

Thermosensitive mixed shell polymeric micelles decorated with gold nanoparticles at the outmost surface: tunable surface plasmon resonance and enhanced catalytic properties with excellent colloidal stability

Double-Striped Metallic Patterns from PS-b-P4VP Nanostrand Templates

Contact Info

Product

Resources

About