Arrays of Ag and Au nanoparticles with terpyridine- and thiophene-based ligands: morphology and optical responses
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F17%3A00474306" target="_blank" >RIV/61389013:_____/17:00474306 - isvavai.cz</a>
Alternative codes found
RIV/00216208:11310/17:10362558
Result on the web
<a href="http://dx.doi.org/10.1021/acs.langmuir.7b00126" target="_blank" >http://dx.doi.org/10.1021/acs.langmuir.7b00126</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acs.langmuir.7b00126" target="_blank" >10.1021/acs.langmuir.7b00126</a>
Alternative languages
Result language
angličtina
Original language name
Arrays of Ag and Au nanoparticles with terpyridine- and thiophene-based ligands: morphology and optical responses
Original language description
The assembly of Ag and Au nanoparticles (NPs) into nanoparticulate arrays mediated by terpyridine (tpy), 4´-(2-thienyl)terpyridine (T-tpy), and short alpha,omega-bis(tpy)oligothiophene ligands has been accomplished at the interface between the Ag or Au NP hydrosol and a solution of the molecular species in dichloromethane. The relationship between the morphology and the optical responses of the arrays has been investigated by advanced methods of TEM (transmission electron microscopy) image analysis and surface plasmon extinction (SPE) spectra. It has been established that the size of islands of closely spaced NPs rather than the average interparticle distance affects the extent of delocalization of the surface plasmon excitations and thus also the SPE spectra. Furthermore, the structure of surface–adsorbate complexes formed in these arrays has been investigated by SERS spectral measurements carried out as a function of the excitation wavelength. Photoinduced charge transfer (CT) transitions from the neutral Ags0 and Aus0 adsorption sites on metal NPs to antibonding orbitals of the adsorbates have been identified for Ag/tpy, Ag/T-tpy, Au/tpy, and Au/T-tpy nanoparticulate arrays. Although the surface–adsorbate complexes displaying a photoinduced CT are known for Ag NPs, the Aus0 surface complexes with this CT are newly reported. Bis(tpy)oligothiophenes were found to be attached to both Ag and Au NPs via the tpy group(s). The match between the interparticle distances within the NP islands and the lengths of the oligomers molecules indicates that the molecules act as interparticle linkers. In this case, unequivocal spectral marker band evidence of the Ags0 as well as Aus0 surface complex formation has not been obtained.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10404 - Polymer science
Result continuities
Project
<a href="/en/project/GAP108%2F12%2F1143" target="_blank" >GAP108/12/1143: Polyelectrolytic conjugated dynamers: preparation, constitutional dynamics and functional properties of new materials</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Langmuir
ISSN
0743-7463
e-ISSN
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Volume of the periodical
33
Issue of the periodical within the volume
17
Country of publishing house
US - UNITED STATES
Number of pages
11
Pages from-to
4146-4156
UT code for WoS article
000400723500006
EID of the result in the Scopus database
2-s2.0-85018342963