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

Amr Ghazy; Jonas Ylönen; Nagarajan Subramaniyam; Maarit Karppinen

doi:10.1039/d3nr04094a

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

Amr Ghazy, Jonas Ylönen, Nagarajan Subramaniyam, Maarit Karppinen^*

^*Corresponding author for this work

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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.

Original language	English
Pages (from-to)	15865-15870
Number of pages	6
Journal	Nanoscale
Volume	15
Issue number	38
Early online date	18 Sept 2023
DOIs	https://doi.org/10.1039/d3nr04094a
Publication status	Published - 14 Oct 2023
MoE publication type	A1 Journal article-refereed

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10.1039/d3nr04094aLicence: CC BY

CHEM_Ghazy_et_al_Atomic_molecular_2023_NanoscaleFinal published version, 2 MBLicence: CC BY

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@article{2e55575a893043889c50d0964de80fa7,

title = "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.",

author = "Amr Ghazy and Jonas Yl{\"o}nen and Nagarajan Subramaniyam and Maarit Karppinen",

note = "| openaire: EC/HE/101097815/EU//UniEn-MLD Funding Information: Funding was received through the Academy of Finland (PREIN Flagship), and the European Research Council (H2020) AdG UniEnMLD (no. 101097815). We also acknowledge the use of the RawMatTERS Finland Infrastructure (RAMI) at Aalto University. A. G. acknowledges Jenny & Antti Wihuri Foundation for financial support. Publisher Copyright: {\textcopyright} 2023 The Royal Society of Chemistry.",

year = "2023",

month = oct,

day = "14",

doi = "10.1039/d3nr04094a",

language = "English",

volume = "15",

pages = "15865--15870",

journal = "Nanoscale",

issn = "2040-3364",

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TY - JOUR

T1 - Atomic/molecular layer deposition of europium-organic thin films on nanoplasmonic structures towards FRET-based applications

AU - Ghazy, Amr

AU - Ylönen, Jonas

AU - Subramaniyam, Nagarajan

AU - Karppinen, Maarit

N1 - | openaire: EC/HE/101097815/EU//UniEn-MLD Funding Information: Funding was received through the Academy of Finland (PREIN Flagship), and the European Research Council (H2020) AdG UniEnMLD (no. 101097815). We also acknowledge the use of the RawMatTERS Finland Infrastructure (RAMI) at Aalto University. A. G. acknowledges Jenny & Antti Wihuri Foundation for financial support. Publisher Copyright: © 2023 The Royal Society of Chemistry.

PY - 2023/10/14

Y1 - 2023/10/14

N2 - 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.

AB - 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.

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U2 - 10.1039/d3nr04094a

DO - 10.1039/d3nr04094a

M3 - Article

AN - SCOPUS:85173927789

SN - 2040-3364

VL - 15

SP - 15865

EP - 15870

JO - Nanoscale

JF - Nanoscale

IS - 38

ER -

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

Abstract

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UniEn-MLD: Unique ALD/MLD-Enabled Material Functions

PREIN 2: Photonics Research and Innovation

Raw Materials Research Infrastructure

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

Abstract

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Projects

UniEn-MLD: Unique ALD/MLD-Enabled Material Functions

PREIN 2: Photonics Research and Innovation

Equipment

Raw Materials Research Infrastructure

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