Heavy carbon nanodots: a new phosphorescent carbon nanostructure

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dc.contributor.authorKnoblauch, Rachael
dc.contributor.authorBui, Brian
dc.contributor.authorRaza, Ammar
dc.contributor.authorGeddes, Chris
dc.date.accessioned2023-07-27T21:09:47Z
dc.date.available2023-07-27T21:09:47Z
dc.date.issued2018-05-16
dc.description.abstractCarbon nanodots are nanometer sized fluorescent particles studied for their distinct photoluminescent properties and biocompatibility. Although extensive literature reports the modification and application of carbon nanodot fluorescence, little has been published pertaining to phosphorescence emission from carbon nanodots. The use of phosphors in biological imaging can lead to clearer detection, as the long lifetimes of phosphorescent emission permit off-gated collection that avoids noise from biological autofluorescence. Carbon nanodots present a desirable scaffold for this application, with advantageous qualities ranging from photostability to multi-color emission. This research reports the generation of a novel phosphorescent “heavy carbon” nanodot via halogenation of the carbon nanodot structure. By employing a collection pathway that effectively incorporates bromine into the nanostructure, T₁ triplet character is introduced, and subsequently phosphorescence is observed in liquid media at room temperature for the first time in the nanodot literature. Further experiments are reported characterizing the conditions of observed phosphorescence and its pH-dependence. Our approach for producing “heavy carbon nanodots” is a low-cost and relatively simple method for generating the phosphorescent nanodots, which sets the foundation for its potential future use as a phosphorescent probe in application.en_US
dc.description.sponsorshipNational Institutes of Health (NIH) Chemistry Biology Interface (CBI) Program at University of Maryland Baltimore County – 5T32GM066706-14. Institute of Fluorescence at the University of Maryland Baltimore County Internal Funding. The authors acknowledge the Institute of Fluorescence (IoF) as well as the Department of Chemistry and Biochemistry at the University of Maryland Baltimore County (UMBC) for financial support. We also acknowledge the support for Dr. Marie-Christine Daniel at UMBC for help and guidance with DLS measurements.en_US
dc.description.urihttps://pubs.rsc.org/en/content/articlelanding/2018/CP/C8CP02675Ken_US
dc.format.extent24 pagesen_US
dc.genrejournal articlesen_US
dc.genrepreprintsen_US
dc.identifierdoi:10.13016/m2fgro-dki7
dc.identifier.citationKnoblauch, Rachael, Brian Bui, Ammar Raza, and Chris D. Geddes. “Heavy Carbon Nanodots: A New Phosphorescent Carbon Nanostructure.” Physical Chemistry Chemical Physics 20, no. 22 (June 6, 2018): 15518–27. https://doi.org/10.1039/C8CP02675K.en_US
dc.identifier.urihttps://doi.org/10.1039/C8CP02675K
dc.identifier.urihttp://hdl.handle.net/11603/28907
dc.language.isoen_USen_US
dc.publisherRoyal Society of Chemistryen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Institute of Flourescence
dc.relation.ispartofUMBC Faculty Collection
dc.relation.ispartofUMBC Student Collection
dc.relation.ispartofUMBC Chemistry & Biochemistry Department
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.en_US
dc.titleHeavy carbon nanodots: a new phosphorescent carbon nanostructureen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0001-9653-1823en_US
dcterms.creatorhttps://orcid.org/0000-0002-9110-6374en_US

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