Photochemical modification of a diamond surface using a pulsed UV laser as the energy source

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abstract

The use of an excimer benchtop pulsed UV laser as the energy source for the photochemical modification of the surface of diamond films is reported. Boron-doped nanocrystalline diamond (NCD) films were deposited on Si wafers via plasma-enhanced chemical vapour deposition (PECVD). The as-deposited films were characterised by scanning electron microscopy (SEM), Raman spectroscopy, and X-ray diffraction (XRD). Following characterisation, the surfaces of the films were subjected to a photochemical reaction with 2,2,2-trifluoroethyl undec-10enoate using two different sources of radiation: a benchtop UV lamp (254 nm) and a KrF excimer pulsed UV laser (248 nm). The photochemically treated films were characterised by contact angle measurements and X-ray photoelectric spectroscopy (XPS) using non-treated films as a control. The use of a pulsed UV laser source was shown to reduce the photochemical reaction time from several hours to a few minutes.

keywords

DNA ATTACHMENT; THIN-FILMS; FUNCTIONALIZATION; PHOTOELECTRON

subject category

Materials Science; Physics

authors

Silva, M; Santos, NE; Pinto, M; Guieu, S; Oliveira, R; Figueira, F; Paz, FAA; Neto, M; Rino, L; Deuermeier, J; Maradiya, M; Liehr, M; Mendes, JC; Braga, SS

our authors

foto Filipe Alexandre Almeida Paz

Filipe Alexandre Almeida Paz

Principal Researcher
foto Flávio Alberto da Silva Figueira

Flávio Alberto da Silva Figueira

Junior Researcher
foto Miguel Ângelo da Costa Neto

Miguel Ângelo da Costa Neto

Principal Researcher
foto Samuel Jacques André Guieu

Samuel Jacques André Guieu

Junior Researcher
foto Susana Isabel Fonseca de Almeida Santos Braga

Susana Isabel Fonseca de Almeida Santos Braga

Researcher

Groups

G1 - Porous Materials and Nanosystems
G3 - Electrochemical Materials, Interfaces and Coatings

Projects

CICECO - Aveiro Institute of Materials (UIDB/50011/2020)

CICECO - Aveiro Institute of Materials (UIDP/50011/2020)

Associated Laboratory CICECO-Aveiro Institute of Materials (LA/P/0006/2020)

acknowledgements

Funding by FCT/MCTES (Fundacao para a Ciencia e a Tecnologia) through national funds (PIDDAC) and, where applicable, co-financed by the European Regional Development Fund (FEDER) is acknowledged by LAQV-REQUIMTE (Ref. UIDB/50006/2020, doi 10.54499/UIDP/50006/2020) , by Instituto de Telecomunicacoes (Refs. UIDB/50008/2020-UIDP/50008/2020 and PTDC/EEI-TEL/1511/2020) , by CICECO (Refs. UIDB/50011/2020, doi 10.54499/UIDB/50011/2020; UIDP/50011/2020, doi 10.54499/UIDP/50011/2020; LA/P/0006/2020, doi 10.54499/LA/P/0006/2020) and by i3N (Refs. LA/P/0037/2020, UIDP/50025/2020 and UIDB/50025/2020) . NES acknowledges the FCT PhD scholarship 2022.09798. RO acknowledges the FCT contract CEE-CIND2021.01066. JD acknowledges the FCT contract CEECINST/00102/2018.

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Publication Details

type
Journal Article
year
2024
journal
DIAMOND AND RELATED MATERIALS
volume
147
article number
111314
publisher
ELSEVIER SCIENCE SA
issn
0925-9635
isbn
1879-0062
digital object identifier
10.1016/j.diamond.2024.111314
link
hybrid
web of science article identifier
WOS:001284325500001

Journal Metrics (JCR 2019)

Journal Impact Factor
2.65
Journal Impact Factor (5 yrs)
2.699
category normalized journal percentile
58.345

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