Journal
JOURNAL OF APPLIED SPECTROSCOPY
Volume 86, Issue 3, Pages 384-388Publisher
SPRINGER
DOI: 10.1007/s10812-019-00830-4
Keywords
cerium nitrate; graphene oxide; absorption spectrum; fluorescence; fluorescence quenching
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Funding
- Belarusian Republican Foundation for Fundamental Research [F18UKA-030]
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Static fluorescence quenching by graphene oxide at various concentrations was observed by measuring the relative fluorescence intensity and excited-state lifetime of optically excited Ce3+ ions in aqueous cerium nitrate solutions. The measured Stern-Volmer association constant of Ce aqua complexes with graphene oxide was 24.7 L/g, which was significantly less than the constants for cationic rhodamine dyes and metal cations and was explained by the negative charges on the interacting species.
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