Bulk synthesis and surface patterning of nanoporous metals and alloys from supraspherical nanoparticle aggregates

Rafal Klajn; Timothy P. Gray; Paul J. Wesson; Benjamin D. Myers; Vinayak P. Dravid; Stoyan K. Smoukov; Bartosz A. Grzybowski

doi:10.1002/adfm.200800293

Bulk synthesis and surface patterning of nanoporous metals and alloys from supraspherical nanoparticle aggregates

Rafal Klajn^*, Timothy P. Gray, Paul J. Wesson, Benjamin D. Myers, Vinayak P. Dravid, Stoyan K. Smoukov, Bartosz A. Grzybowski

^*Corresponding author for this work

Materials Science and Engineering

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

42 Scopus citations

Abstract

Supraspheres (SS) composed of hundreds to thousands of metal nanoparticles (NPs) and crosslinked by dithiol linkers are assembled into larger structures, which are subsequently converted into nanoporous metals (NMs). Conversion is achieved by heating which removes organic molecules stabilizing the NPs and allows for NP fusion. Heating of SS solutions leads to NMs of overall macroscopic dimensions; localized radiation using collimated electron beam is used to prepare metallized surface micropatterns. Depending on the composition of supraspherical precursors, nanoporous materials composed of up to three metals can be obtained. Strategies for controlling pore size and nanoscale surface roughness of these materials are discussed.

Original language	English (US)
Pages (from-to)	2763-2769
Number of pages	7
Journal	Advanced Functional Materials
Volume	18
Issue number	18
DOIs	https://doi.org/10.1002/adfm.200800293
State	Published - Sep 23 2008

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
General Chemistry
General Materials Science
Electrochemistry
Biomaterials

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10.1002/adfm.200800293

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abstract = "Supraspheres (SS) composed of hundreds to thousands of metal nanoparticles (NPs) and crosslinked by dithiol linkers are assembled into larger structures, which are subsequently converted into nanoporous metals (NMs). Conversion is achieved by heating which removes organic molecules stabilizing the NPs and allows for NP fusion. Heating of SS solutions leads to NMs of overall macroscopic dimensions; localized radiation using collimated electron beam is used to prepare metallized surface micropatterns. Depending on the composition of supraspherical precursors, nanoporous materials composed of up to three metals can be obtained. Strategies for controlling pore size and nanoscale surface roughness of these materials are discussed.",

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T1 - Bulk synthesis and surface patterning of nanoporous metals and alloys from supraspherical nanoparticle aggregates

AU - Klajn, Rafal

AU - Gray, Timothy P.

AU - Wesson, Paul J.

AU - Myers, Benjamin D.

AU - Dravid, Vinayak P.

AU - Smoukov, Stoyan K.

AU - Grzybowski, Bartosz A.

PY - 2008/9/23

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N2 - Supraspheres (SS) composed of hundreds to thousands of metal nanoparticles (NPs) and crosslinked by dithiol linkers are assembled into larger structures, which are subsequently converted into nanoporous metals (NMs). Conversion is achieved by heating which removes organic molecules stabilizing the NPs and allows for NP fusion. Heating of SS solutions leads to NMs of overall macroscopic dimensions; localized radiation using collimated electron beam is used to prepare metallized surface micropatterns. Depending on the composition of supraspherical precursors, nanoporous materials composed of up to three metals can be obtained. Strategies for controlling pore size and nanoscale surface roughness of these materials are discussed.

AB - Supraspheres (SS) composed of hundreds to thousands of metal nanoparticles (NPs) and crosslinked by dithiol linkers are assembled into larger structures, which are subsequently converted into nanoporous metals (NMs). Conversion is achieved by heating which removes organic molecules stabilizing the NPs and allows for NP fusion. Heating of SS solutions leads to NMs of overall macroscopic dimensions; localized radiation using collimated electron beam is used to prepare metallized surface micropatterns. Depending on the composition of supraspherical precursors, nanoporous materials composed of up to three metals can be obtained. Strategies for controlling pore size and nanoscale surface roughness of these materials are discussed.

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Bulk synthesis and surface patterning of nanoporous metals and alloys from supraspherical nanoparticle aggregates

Abstract

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