The Fundamental Photophysics of Fluorescent Carbon Nanodots
type: CreativeWork
description: Carbon Nanodots (CDs) are a new protagonist of carbon-based nanoscience by which the paradigm of carbon as a black material unable to emit light has been completely revolutionised. They have been emerging as a new frontier in Nanoscience at the beginning of 2000s, and their potential is evident from the explosion of the number of studies, now ranging in the thousands per year. CDs are nanoparticles composed by carbon, oxygen and hydrogen with a size smaller than 10 nm. Their most important hallmark is their strong luminescence, which is combined with many additional benefits as the low cost and ease of synthesis, the high water solubility, the biocompatibility and non-toxicity, the great sensitivity to the external environment, and a marked electron donating and accepting capabilities. The combination of all of these characteristics guarantees the possibility to use CDs in a very broad range of applications which encompasses many different fields as optoelectronics or sensing. Actually, the term CDs includes nanomaterials which display a wide range of possible structures and variable optical properties. Indeed, in the literature, it is common to find different sub-types of CDs: they can be graphitic, amorphous, disks of graphene or with a C3N4 core; they can be hydrophilic or hydrophobic; they can emit blue, green, or red light; their emission can be independent of the excitation wavelength, or more commonly tunable (peak of the emission depends on the excitation wavelength); their fluorescence intensity can be sensitive to one particular ion in solution or they respond to a variety of interactions with other systems, such as carbon nanotubes. Besides, CDs can be synthesized by many different procedures which yield subtypes of CDs capable of emitting fluorescence at different wavelengths. In all the synthesis approaches, their surface is passivated by external agents to get bright emission. All of this leads to the existence in the literature of diverse sub-types of…
abstract: Carbon Nanodots (CDs) are a new protagonist of carbon-based nanoscience by which the paradigm of carbon as a black material unable to emit light has been completely revolutionised. They have been emerging as a new frontier in Nanoscience at the beginning of 2000s, and their potential is evident from the explosion of the number of studies, now ranging in the thousands per year. CDs are nanoparticles composed by carbon, oxygen and hydrogen with a size smaller than 10 nm. Their most important hallmark is their strong luminescence, which is combined with many additional benefits as the low cost and ease of synthesis, the high water solubility, the biocompatibility and non-toxicity, the great sensitivity to the external environment, and a marked electron donating and accepting capabilities. The combination of all of these characteristics guarantees the possibility to use CDs in a very broad range of applications which encompasses many different fields as optoelectronics or sensing. Actually, the term CDs includes nanomaterials which display a wide range of possible structures and variable optical properties. Indeed, in the literature, it is common to find different sub-types of CDs: they can be graphitic, amorphous, disks of graphene or with a C3N4 core; they can be hydrophilic or hydrophobic; they can emit blue, green, or red light; their emission can be independent of the excitation wavelength, or more commonly tunable (peak of the emission depends on the excitation wavelength); their fluorescence intensity can be sensitive to one particular ion in solution or they respond to a variety of interactions with other systems, such as carbon nanotubes. Besides, CDs can be synthesized by many different procedures which yield subtypes of CDs capable of emitting fluorescence at different wavelengths. In all the synthesis approaches, their surface is passivated by external agents to get bright emission. All of this leads to the existence in the literature of diverse sub-types of…
author: SCIORTINO, ALICE
language: eng
keywords: Carbon Nanodots, fluorescent nanoparticles, Carbon Dots
date published: 2018-11-15
date modified: 2026-07-24T01:35:13Z
provider: Università degli Studi di Catania
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: Università degli studi di Catania

PropertyValue
property ID: Handle
value: https://hdl.handle.net/20.500.11769/582060