Multipetal-Structured and Dumbbell-Structured Gold-Polymer Composite Particles with Self-Modulated Catalytic Activity

Mingmeng Zhang; Todd P. Otanicar; Patrick Phelan; Lenore Dai

doi:10.1021/acs.langmuir.5b02333

Multipetal-Structured and Dumbbell-Structured Gold-Polymer Composite Particles with Self-Modulated Catalytic Activity

Mingmeng Zhang, Todd P. Otanicar, Patrick Phelan, Lenore Dai

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

A simple synthesis route for gold-polymer composite particles with controlled structure (multipetal structure and dumbbell structure) is developed. It is intriguing to observe that by controlling the reaction time and size of gold nanoparticles (AuNPs), tetrapetal-, tripetal-, and dumbbell-structured gold-polystyrene composite are obtained via seeded polymerization. The average number of petals on a single AuNP increases with the AuNP diameter. These particles show potential applications as building blocks for advanced ordered and hierarchical supracolloidal materials. Further, with the incorporation of poly(N-isopropylacrylamide) (PNIPAm), "smart" thermoresponsive dumbbell-structured gold-PNIPAm/polystyrene composite particles are formed. Significant size variation is validated for particles with 83 and 91 wt % PNIPAm content around lower critical solution temperature (LCST), which results in self-modulated catalytic activity.

Original language	English (US)
Pages (from-to)	13191-13200
Number of pages	10
Journal	Langmuir
Volume	31
Issue number	48
DOIs	https://doi.org/10.1021/acs.langmuir.5b02333
State	Published - Oct 7 2015

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Surfaces and Interfaces
Spectroscopy
Electrochemistry

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10.1021/acs.langmuir.5b02333

Cite this

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abstract = "A simple synthesis route for gold-polymer composite particles with controlled structure (multipetal structure and dumbbell structure) is developed. It is intriguing to observe that by controlling the reaction time and size of gold nanoparticles (AuNPs), tetrapetal-, tripetal-, and dumbbell-structured gold-polystyrene composite are obtained via seeded polymerization. The average number of petals on a single AuNP increases with the AuNP diameter. These particles show potential applications as building blocks for advanced ordered and hierarchical supracolloidal materials. Further, with the incorporation of poly(N-isopropylacrylamide) (PNIPAm), {"}smart{"} thermoresponsive dumbbell-structured gold-PNIPAm/polystyrene composite particles are formed. Significant size variation is validated for particles with 83 and 91 wt % PNIPAm content around lower critical solution temperature (LCST), which results in self-modulated catalytic activity.",

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AU - Dai, Lenore

PY - 2015/10/7

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AB - A simple synthesis route for gold-polymer composite particles with controlled structure (multipetal structure and dumbbell structure) is developed. It is intriguing to observe that by controlling the reaction time and size of gold nanoparticles (AuNPs), tetrapetal-, tripetal-, and dumbbell-structured gold-polystyrene composite are obtained via seeded polymerization. The average number of petals on a single AuNP increases with the AuNP diameter. These particles show potential applications as building blocks for advanced ordered and hierarchical supracolloidal materials. Further, with the incorporation of poly(N-isopropylacrylamide) (PNIPAm), "smart" thermoresponsive dumbbell-structured gold-PNIPAm/polystyrene composite particles are formed. Significant size variation is validated for particles with 83 and 91 wt % PNIPAm content around lower critical solution temperature (LCST), which results in self-modulated catalytic activity.

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Multipetal-Structured and Dumbbell-Structured Gold-Polymer Composite Particles with Self-Modulated Catalytic Activity

Abstract

ASJC Scopus subject areas

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