Surface optimization of nanodiamonds using non-thermal plasma
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388963%3A_____%2F24%3A00585411" target="_blank" >RIV/61388963:_____/24:00585411 - isvavai.cz</a>
Alternative codes found
RIV/68378271:_____/24:00585411 RIV/00216208:11310/24:10481011 RIV/60461373:22340/24:43931187
Result on the web
<a href="https://doi.org/10.1016/j.carbon.2024.119062" target="_blank" >https://doi.org/10.1016/j.carbon.2024.119062</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.carbon.2024.119062" target="_blank" >10.1016/j.carbon.2024.119062</a>
Alternative languages
Result language
angličtina
Original language name
Surface optimization of nanodiamonds using non-thermal plasma
Original language description
Sensitive local monitoring of intracellular processes by quantum sensing utilizing nitrogen-vacancy (NV) centers in nanodiamonds (NDs), would greatly advance cell biology and medicine. However, NDs still fall behind in sensitivity compared to bulk diamond because of their much shorter NV relaxation times. As suggested in theoretical studies, prolongation of NV relaxation times should be achievable by surface optimization creating mixed H/O surface termination consisting of hydrogen atoms, hydroxyl groups, and C–O–C ether bridges. Here we target such chemistry by employing a non-thermal plasma (NTP) in a point-to-plain discharge configuration in aqueous solution. We have devised a set of experiments with different types of nanodiamond samples (of HPHT or detonation origin and with an H- or O-terminated surface) and four working gases (air, O2, He, and H2). Using FTIR, we have found that NTP modification induces a relative increase of O–H and C–H bonds with respect to C[dbnd]O bonds. We have observed the biggest changes in FTIR spectra and the greatest decrease in zeta potential with oxidized NDs (both detonation and HPHT) and hydrogen as the working gas. NV electron spin relaxation times of thus modified HPHT NDs indicate an improvement of the T1 time by ∼17%–∼29% and the T2 time prolongation of 40%.
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
10403 - Physical chemistry
Result continuities
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
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Carbon
ISSN
0008-6223
e-ISSN
1873-3891
Volume of the periodical
224
Issue of the periodical within the volume
April
Country of publishing house
GB - UNITED KINGDOM
Number of pages
9
Pages from-to
119062
UT code for WoS article
001218289400001
EID of the result in the Scopus database
2-s2.0-85189511576