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

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@article{4e8881530aba4cb681fbbc606a0530fb,
title = "Surface functionalisation significantly changes the physical and electronic properties of carbon nano-dots",
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.",
keywords = "Carbon dots, Nanomaterials, Ultrafast Spectroscopy, Atomic Force Microscopy",
author = "Thomas Swift and Marta Duchi and Stephen Hill and David Benito-Alifonso and Robert Harniman and Sadiyah Sheikh and Sean Davis and Annela Seddon and Heather Whitney and Carmen Galan and Oliver, {Thomas A A}",
year = "2018",
month = "8",
day = "7",
doi = "10.1039/c8nr03430c",
language = "English",
volume = "10",
pages = "13908--13912",
journal = "Nanoscale",
issn = "2040-3364",
publisher = "Royal Society of Chemistry",
number = "29",

}

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TY - JOUR

T1 - Surface functionalisation significantly changes the physical and electronic properties of carbon nano-dots

AU - Swift, Thomas

AU - Duchi, Marta

AU - Hill, Stephen

AU - Benito-Alifonso, David

AU - Harniman, Robert

AU - Sheikh, Sadiyah

AU - Davis, Sean

AU - Seddon, Annela

AU - Whitney, Heather

AU - Galan, Carmen

AU - Oliver, Thomas A A

PY - 2018/8/7

Y1 - 2018/8/7

N2 - 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.

AB - 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.

KW - Carbon dots

KW - Nanomaterials

KW - Ultrafast Spectroscopy

KW - Atomic Force Microscopy

UR - http://www.scopus.com/inward/record.url?scp=85050825560&partnerID=8YFLogxK

U2 - 10.1039/c8nr03430c

DO - 10.1039/c8nr03430c

M3 - Article

VL - 10

SP - 13908

EP - 13912

JO - Nanoscale

JF - Nanoscale

SN - 2040-3364

IS - 29

ER -