Insitu one-step synthesis of graphene quantum dots-metal free and zinc phthalocyaninesconjugates: Investigation of photophysicochemical properties

Gertrude Fomo, OJodomo J. Achadu, Tebello Nyokong

Research output: Contribution to conferencePosterpeer-review

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Abstract

Nanoconjugates of graphene quantum dots (GQDs) and 4-(tetrakis-5-(trifluoromethyl)-2-mercaptopyridinephthalocyanine (H2Pc (OPyF3)4) or
4-(tetrakis-5-(trifluoromethyl)-2-mercaptopyridinephthalocyaninato) zinc (II) (ZnPc (OPyF3)4) were synthesized via a novel insitu one-step route. The bottom-up approach for the prepared conjugates could ensure the intercalation of the phthalocyanines (Pcs) directly onto the edges or surface of the GQDs and or non-covalent coordination using the π-electron systems of both materials. The as-synthesized GQDs and their Pcs conjugates were characterized using different spectroscopic techniques and their photophysicochemical properties evaluated. The singlet oxygen quantum yieldsof the Pcs in the presence of GQDs were enhanced due to Förster resonance energy transfer (FRET) occurrence within the
conjugated hybrids. Hence, these nanoconjugates are potential materials for photodynamic therapy (PDT) and photocatalysis applications.
Original languageEnglish
Number of pages1
Publication statusPublished - 16 Jul 2017
Externally publishedYes
EventThe 28th International Conference on Photochemistry (ICP 2017) : Session: Spectroscopy of Single Molecules and Nanostructures - Strasbourg, France, Srasbourg, France
Duration: 16 Jul 201721 Jul 2017
Conference number: SSMN-POS-05
https://riuma.uma.es/xmlui/bitstream/handle/10630/14406/ICP2017-programme-participants.pdf?sequence=2 & https://icp2017strasbourg.u-strasbg.fr/

Conference

ConferenceThe 28th International Conference on Photochemistry (ICP 2017)
Country/TerritoryFrance
CitySrasbourg
Period16/07/1721/07/17
Internet address

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