Issue 38, 2023

Atomic/molecular layer deposition of europium–organic thin films on nanoplasmonic structures towards FRET-based applications

Abstract

We present a novel atomic/molecular layer deposition (ALD/MLD) process for europium–organic thin films based on Eu(thd)3 and 2-hydroxyquinoline-4-carboxylic acid (HQA) precursors. The process yields with appreciably high growth rate luminescent Eu-HQA thin films in which the organic HQA component acts as a sensitizer for the red Eu3+ luminescence, extending the excitation wavelength range up to ca. 400 nm. We moreover deposit these films on nanoplasmonic structures to achieve a twentyfold enhanced emission intensity. Finally, we demonstrate the FRET-type energy transfer process for our Eu-HQA coated nanoplasmonic structures in combination with commercial Alexa647 fluorophor, underlining their potential towards novel bioimaging applications.

Graphical abstract: Atomic/molecular layer deposition of europium–organic thin films on nanoplasmonic structures towards FRET-based applications

Supplementary files

Article information

Article type
Paper
Submitted
15 avq 2023
Accepted
16 sen 2023
First published
18 sen 2023
This article is Open Access
Creative Commons BY license

Nanoscale, 2023,15, 15865-15870

Atomic/molecular layer deposition of europium–organic thin films on nanoplasmonic structures towards FRET-based applications

A. Ghazy, J. Ylönen, N. Subramaniyam and M. Karppinen, Nanoscale, 2023, 15, 15865 DOI: 10.1039/D3NR04094A

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