The role of molecular fluorophores in the photoluminescence of carbon dots derived from citric acid: current state-of-the-art and future perspectives
Authors:
- Wiktor Kasprzyk,
- Tomasz Świergosz,
- Piotr P. Romańczyk,
- Jochen Feldmann,
- Jacek K. Stolarczyk
Abstract
Carbon dots (CDs), an emerging class of nanomaterials, have attracted considerable attention due to their intriguing photophysical properties. Despite their indisputable potential of utilization in many fascinating areas of research and life, some fundamental aspects concerning their structure and the origin of their photoluminescence (PL) properties still await clarification. The mechanism of PL emission of CDs is associated with their structure, which is dependent on the carbonization process. At the initial stages of CD synthesis via a bottom-up approach, molecular fluorophores are considered to dominate the optical characteristics of the resulting nanomaterials. In this review, the recent progress in the use of molecular state theory for explanation of the structure–property relationship in CDs is summarized. This review focuses exclusively on the molecular fluorophores existing in nanomaterials prepared from citric acid (CA) as one of the most frequent carbon sources reported for the bottom-up synthesis of CDs. Consequently, the most relevant transformations of CA and the history of molecular fluorophores derived from it are described, followed by an in-depth discussion on their relevance in understanding the specific photophysical properties of blue-, green-, and red-emitting CDs. Finally, the challenging issues and future perspectives of molecular state PL mechanism exploration in CDs are highlighted.
- Record ID
- CUTafc2823fb1ec4624aa67c2d42d09ddd9
- Publication categories
- ;
- Author
- Journal series
- Nanoscale, ISSN 2040-3364, e-ISSN 2040-3372
- Issue year
- 2022
- Vol
- 14
- No
- 39
- Pages
- 14368-14384
- Other elements of collation
- rys.; schem.; wykr.; Bibliografia (na s.) - 14381-14384; Bibliografia (liczba pozycji) - 132; Oznaczenie streszczenia - Streszcz. ang.; Numeracja w czasopiśmie - Vol. 14, Iss. 39
- Substantive notes
- This article is part of the themed collection: Recent Review Articles
- Dedication: In memory of Tomasz Świergosz – our beloved friend and the most passionate and inspiring scientist we have ever known
- Keywords in English
- carbon dots, molecular fluorophores, photoluminescence, citric acid
- ASJC Classification
- DOI
- DOI:10.1039/d2nr03176k Opening in a new tab
- URL
- https://pubs.rsc.org/en/content/articlelanding/2022/nr/d2nr03176k Opening in a new tab
- Language
- eng (en) English
- Score (nominal)
- 140
- Score source
- journalList
- Score
- Publication indicators
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTafc2823fb1ec4624aa67c2d42d09ddd9/
- URN
urn:pkr-prod:CUTafc2823fb1ec4624aa67c2d42d09ddd9
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.