dc.contributor.author
Ren, Jian
dc.contributor.author
Weber, Fabian
dc.contributor.author
Weigert, Florian
dc.contributor.author
Wang, Yajie
dc.contributor.author
Choudhury, Sneha
dc.contributor.author
Xiao, Jie
dc.contributor.author
Lauermann, Iver
dc.contributor.author
Resch-Genger, Ute
dc.contributor.author
Bande, Annika
dc.contributor.author
Petit, Tristan
dc.date.accessioned
2019-07-18T11:24:17Z
dc.date.available
2019-07-18T11:24:17Z
dc.identifier.uri
https://refubium.fu-berlin.de/handle/fub188/25118
dc.identifier.uri
http://dx.doi.org/10.17169/refubium-2873
dc.description.abstract
Carbon dots have attracted much attention due to their unique optical, chemical and electronic properties enabling a wide range of applications. The properties of carbon dots can be effectively adjusted through modifying their chemical composition. However, a major challenge remains in understanding the core and surface contributions to optical and electronic transitions. Here, three blue luminescent carbon dots with carboxyl, amino and hydroxyl groups were comprehensively characterized by UV-vis absorption and emission spectroscopy, synchrotron-based X-ray spectroscopy, and infrared spectroscopy. The influence of the surface functionality on their fluorescence was probed by pH-dependent photoluminescence measurements. Moreover, the hydrogen bonding interactions between water and the surface groups of carbon dots were characterized by infrared spectroscopy. Our results show that both core and surface electronic states of blue luminescent carbon dots contribute to electronic acceptor levels while the chemical nature of the surface groups determines the hydrogen bonding behavior of the carbon dots. This comprehensive spectroscopic study demonstrates that the surface chemistry has a profound influence on the electronic configuration and surface–water interaction of carbon dots, thus affecting their photoluminescence properties.
en
dc.format.extent
9 Seiten
dc.rights.uri
https://creativecommons.org/licenses/by/4.0/
dc.subject
surface chemistry
en
dc.subject
blue luminescent carbon dots
en
dc.subject.ddc
500 Naturwissenschaften und Mathematik::530 Physik::530 Physik
dc.title
Influence of surface chemistry on optical, chemical and electronic properties of blue luminescent carbon dots
dc.type
Wissenschaftlicher Artikel
dcterms.bibliographicCitation.doi
10.1039/C8NR08595A
dcterms.bibliographicCitation.journaltitle
Nanoscale
dcterms.bibliographicCitation.number
4
dcterms.bibliographicCitation.pagestart
2056
dcterms.bibliographicCitation.pageend
2064
dcterms.bibliographicCitation.volume
11
dcterms.bibliographicCitation.url
https://doi.org/ 10.1039/C8NR08595A
refubium.affiliation
Physik
refubium.resourceType.isindependentpub
no
dcterms.accessRights.openaire
open access
dcterms.isPartOf.issn
2040-3364
dcterms.isPartOf.eissn
2040-3372
refubium.resourceType.provider
WoS-Alert