Spontaneous formation of carbon dots helps to distinguish molecular fluorophores species

I. Jénnifer Gómez, Manuel Vazquez Sulleiro, Naděžda Pizúrová, Antonin Bednařík, Petr Lepcio, David Holec, Jan Preisler, Lenka Zajickkova

Publikation: Beitrag in FachzeitschriftArtikelForschungBegutachtung

Abstract

Carbon dots (CDs) display photophysical features that appear similar, if not identical, despite the variety of synthesis protocols used to obtain them. The unique design of CDs toward the desired properties requires an exhaustive understanding of the structure itself. This work offers a fundamental insight into the structure and formation of the carbon dots that allows distinguishing the existence of molecular fluorophore species. Remarkably, density functional theory calculations of the elucidated structures support the spontaneous formation of a compact network of molecular species. In addition, as a proof-of-principle, our work comprehensively studies the photoluminescence properties (i.e., concentration, pH and solvent dependencies), which pave the way for developing CD-based logic gate fluorescent sensors.

OriginalspracheEnglisch
Aufsatznummer155536
Seitenumfang9
FachzeitschriftApplied surface science
Jahrgang610.2023
Ausgabenummer1 February
Frühes Online-Datum3 Nov. 2022
DOIs
PublikationsstatusVeröffentlicht - 1 Feb. 2023

Bibliographische Notiz

Funding Information:
This work was supported by Operational Program Research, Development and Education-Project “MSCAfellow4@MUNI” ( CZ.02.2.69/0.0/0.0/20_079/0017045 ). The authors acknowledge CzechNanoLab Research Infrastructure ( LM2018110 ) supported by the Ministry of Education, Youth and Sports of the Czech Republic ( MEYS CR ). The authors are grateful to Prof. Emilio Pérez, Prof. Petr Klán, and Prof. Vladimír Šindelář for allowing to use of the TGA, UV–Vis and fluorescence spectrometer, and the MW reactor. Financial resources related to these equipment were RECETOX research infrastructure (supported by MEYS CR under LM2018121 and 02.1.01/0.0/0.0/18_046/0015975 ) and the CETOCOEN EXCELLENCE Teaming 2 project Horizon2020 ( 857560 ). IMDEA Nanociencia acknowledges support from the “Severo Ochoa” Programme for Centres of Excellence in R&D (MINECO, Grant SEV- 2016-0686 ). The computational results presented have been achieved [in part] using the Vienna Scientific Cluster (VSC).

Funding Information:
This work was supported by Operational Program Research, Development and Education-Project “MSCAfellow4@MUNI” (CZ.02.2.69/0.0/0.0/20_079/0017045). The authors acknowledge CzechNanoLab Research Infrastructure (LM2018110) supported by the Ministry of Education, Youth and Sports of the Czech Republic (MEYS CR). The authors are grateful to Prof. Emilio Pérez, Prof. Petr Klán, and Prof. Vladimír Šindelář for allowing to use of the TGA, UV–Vis and fluorescence spectrometer, and the MW reactor. Financial resources related to these equipment were RECETOX research infrastructure (supported by MEYS CR under LM2018121 and 02.1.01/0.0/0.0/18_046/0015975) and the CETOCOEN EXCELLENCE Teaming 2 project Horizon2020 (857560). IMDEA Nanociencia acknowledges support from the “Severo Ochoa” Programme for Centres of Excellence in R&D (MINECO, Grant SEV- 2016-0686). The computational results presented have been achieved [in part] using the Vienna Scientific Cluster (VSC).

Publisher Copyright:
© 2022 Elsevier B.V.

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