Patterned 2D and 3D assemblies of nanoparticles on molecular printboards

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

Functionalized nanoparticles have powerful applications as intermediates between solution and surface chemistry and as tools for nanofabrication. Two main examples of these have been shown. The functionalization of 3 nm gold and 55 nm silica nanoparticles with cyclodextrin (CD) host sites has been achieved, which allows: (i) the controlled aggregation with guestfunctionalized dendrimers in solution, (ii) the specific adsorption onto dendrimer-patterned substrates, and (iii) the fabrication of larger architectures using the layer-by-layer methodology. Aggregation in solution was shown to proceed through specific host-guest recognition. The adsorption onto surfaces employed so-called “molecular printboards”, which are self-assembled monolayers with the same cyclodextrin host recognition sites which allow the stable assembly of molecules and nanoparticles through multivalent host-guest interactions. CD silica nanoparticles were shown to adsorb specifically onto areas of such molecular printboards which were patterned with adamantyl-functionalized dendrimers. The layer-by-layer (LBL) assembly of such dendrimers and CD gold nanoparticles led to a controllable multilayer architecture with a thickness increase of about 2 nm per bilayer. The combination of the (bottom-up) particle LBL assembly and top-down surface structuring, in particular nanoimprint lithography, was shown to result in the formation of 3D objects down to sub-100 nm in all three dimensions.
Original languageEnglish
Title of host publicationDisclosing Materials at the Nanoscale
EditorsP. Vincenzini, D. Fiorani
PublisherScientific.net
Pages105-114
Number of pages10
DOIs
Publication statusPublished - 2006
EventInternational Conferences on Modern Materials and Technologies, CIMTEC 2000 - Acireale, Italy
Duration: 4 Jun 20009 Jun 2000

Publication series

NameAdvances in Science and Technology
PublisherScientific.Net
Volume51
ISSN (Print)1662-0356

Conference

ConferenceInternational Conferences on Modern Materials and Technologies, CIMTEC 2000
Abbreviated titleCIMTEC
CountryItaly
CityAcireale
Period4/06/009/06/00
OtherCIMTEC 2000 consists of the 11th International Ceramics Congress & Forum on New Materials

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