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Identification of v...
Identification of vibrational signatures from short chains of interlinked molecule-nanoparticle junctions obtained by inelastic electron tunnelling spectroscopy
- Article/chapterEnglish2013
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Royal Society of Chemistry (RSC),2013
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LIBRIS-ID:oai:DiVA.org:kth-124065
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-124065URI
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https://doi.org/10.1039/c3nr00505dDOI
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
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QC 20130626
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Short chains containing a series of metal-molecule-nanoparticle nanojunctions are a nano-material system with the potential to give electrical signatures close to those from single molecule experiments while enabling us to build portable devices on a chip. Inelastic electron tunnelling spectroscopy (IETS) measurements provide one of the most characteristic electrical signals of single and few molecules. In interlinked molecule-nanoparticle (NP) chains containing typically 5-7 molecules in a chain, the spectrum is expected to be a superposition of the vibrational signatures of individual molecules. We have established a stable and reproducible molecule-AuNP multi-junction by placing a few 1,8-octanedithiol (ODT) molecules onto a versatile and portable nanoparticle-nanoelectrode platform and measured for the first time vibrational molecular signatures at complex and coupled few-molecule-NP junctions. From quantum transport calculations, we model the IETS spectra and identify vibrational modes as well as the number of molecules contributing to the electron transport in the measured spectra.
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Lofas, H.
(author)
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Fransson, J.
(author)
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Blom, T.
(author)
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Grigoriev, A.
(author)
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Wallner, A.
(author)
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Ahuja, RajeevKTH,Tillämpad materialfysik(Swepub:kth)u1l4ct57
(author)
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Ottosson, H.
(author)
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Leifer, K.
(author)
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KTHTillämpad materialfysik
(creator_code:org_t)
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In:Nanoscale: Royal Society of Chemistry (RSC)5:11, s. 4673-46772040-33642040-3372
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