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Issue 29, 2018

Surface functionalisation significantly changes the physical and electronic properties of carbon nano-dots

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Abstract

Biomolecule functionalisation of carbon nano-dots (CDs) greatly enhances their biocompatibility and applicability, however, little is known about their molecular structure. Using an arsenal of spectroscopic and analytical techniques, we provide new insights into the physical and electronic structure of uncoated and glycan-functionalised CDs. Our studies reveal that surface functionalisation does not always result in a homogenous corona surrounding the core, and the choice of carbohydrate significantly affects the electronic structure of the surface CD states. Further, the average surface coverage of an ensemble of CDs can be probed via transient absorption spectroscopy. These findings have implications for CDs targeted at interactions with biological systems or local sensors.

Graphical abstract: Surface functionalisation significantly changes the physical and electronic properties of carbon nano-dots

Supplementary files

Article information


Submitted
26 Apr 2018
Accepted
06 Jul 2018
First published
10 Jul 2018

This article is Open Access

Nanoscale, 2018,10, 13908-13912
Article type
Communication

Surface functionalisation significantly changes the physical and electronic properties of carbon nano-dots

T. A. Swift, M. Duchi, S. A. Hill, D. Benito-Alifonso, R. L. Harniman, S. Sheikh, S. A. Davis, A. M. Seddon, H. M. Whitney, M. C. Galan and T. A. A. Oliver, Nanoscale, 2018, 10, 13908 DOI: 10.1039/C8NR03430C

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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