Optically coupled gold nanostructures: plasmon enhanced luminescence from gold nanorod-nanocluster hybrids

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F22%3A00556725" target="_blank" >RIV/61388963:_____/22:00556725 - isvavai.cz</a>

Alternative codes found

RIV/61389005:_____/22:00556725 RIV/00216208:11320/22:10443314 RIV/00216208:11110/22:10443314

Result on the web

<a href="https://doi.org/10.1039/D1NR08254J" target="_blank" >https://doi.org/10.1039/D1NR08254J</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d1nr08254j" target="_blank" >10.1039/d1nr08254j</a>

Result language

angličtina

Original language name

Optically coupled gold nanostructures: plasmon enhanced luminescence from gold nanorod-nanocluster hybrids

Original language description

Photoluminescent (PL) gold nanoclusters (AuNCs) show many advantages over conventional semiconductor quantum dots, however, their application potential is limited by their relatively low absorption cross-section and quantum yield. Plasmonic enhancement is a common strategy for improving the performance of weak fluorophores, yet in the case of AuNCs this method is still poorly explored. Here a robust synthetic approach to a compact plasmonic nanostructure enhancing significantly the PL of AuNCs is presented. Two gold nanostructures, AuNCs and plasmonic gold nanorods (AuNRs), are assembled in a compact core-shell nanostructure with tunable geometry and optical properties. The unprecedented degree of control over the structural parameters of the nanostructure allows to study the effects of several parameters, such as excitation wavelength, AuNC-AuNR distance, and relative loading of AuNCs per single AuNR. Consequently, a more general method to measure and evaluate enhancement independently of the absolute particle concentrations is introduced. The highest PL intensity enhancement is obtained when the excitation wavelength matches the strong longitudinal plasmonic band of the AuNRs and when the separation distance between AuNCs and AuNRs decreases to 5 nm. The results presented are relevant for the application of AuNCs in optoelectronic devices and bioimaging.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

21001 - Nano-materials (production and properties)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Nanoscale

ISSN

2040-3364

e-ISSN

2040-3372

Volume of the periodical

14

Issue of the periodical within the volume

8

Country of publishing house

GB - UNITED KINGDOM

Number of pages

13

Pages from-to

3166-3178

UT code for WoS article

000753568700001

EID of the result in the Scopus database

2-s2.0-85125211807